Abstract

Disclosed in the present invention is a low-temperature blasting polypropylene composite material. The low-temperature blasting polypropylene composite material comprises the following components, in parts by weight: 55-80 parts of a polypropylene, 5-20 parts of a filler, 1-5 parts of special fibers, 15-20 parts of a flexibilizer, 0.1-0.5 parts of a mixed compatilizer and 0-1.2 parts of an auxiliary agent, wherein the polypropylene is a binary block co-polypropylene synthesized by ethylene and propylene; the special fibers are ultra-high molecular weight polyethylene fibers having a fiber fineness of 400-800 deniers; and the mixed compatilizer comprises a polyethylene-grafted maleic anhydride and a polypropylene-grafted maleic anhydride. In the present invention, a specific binary block co-polypropylene and the ultra-high molecular weight polyethylene fibers having a specific fiber fineness are used to be matched with the specific mixed compatilizer, such that it is ensured that the polypropylene composite material has excellent tensile strength and bending properties while having excellent low-temperature bursting performance.

IPC Classes  ?

• C08L 23/12 - Polypropene
• C08L 23/06 - Polyethene
• C08L 53/00 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers
• C08L 51/00 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers
• D01D 5/00 - Formation of filaments, threads, or the like
• D01F 6/46 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins

Abstract

The present application discloses a polyamide material, and a preparation method therefor and a use thereof. The polyamide material of the present application comprises the following components in parts by weight: 49-97 parts of a polyamide resin, 0-50 parts of a filler, 1-5 parts of ultra-high-molecular-weight polyethylene, 1-5 parts of linear low-density polyethylene grafted maleic anhydride (LLDPE-g-MAH) and 1-3 parts of an auxiliary agent. According to the present application, by adding ultra-high-molecular-weight polyethylene and LLDPE-g-MAH into the polyamide material, the strength of the material is not reduced while reducing the surface friction of the material, such that the polyamide material has the characteristics of low noise and high mechanical properties.

IPC Classes  ?

• C08L 77/02 - Polyamides derived from omega-amino carboxylic acids or from lactams thereof
• C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
• C08L 51/06 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
• C08L 23/06 - Polyethene

Abstract

Disclosed in the present invention are a low-odor flame-retardant polyamide composite material, and a preparation method therefor and a user thereof. The polyamide composite material comprises the following components in parts by weight: 20-60 parts of a polyamide resin, 13-30 parts of aluminum diethylphosphinate, 4-10 parts of a synergistic flame retardant, 15-40 parts of glass fibers, 1-5 parts of polyethylene glycol, and 0.1-2 parts of a thermal stabilizing aid. The polyamide composite material of the present invention successfully solves the problem of strong odor of flame-retardant polyamide and has high notched impact strength.

IPC Classes  ?

• C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
• C08L 71/02 - Polyalkylene oxides
• C08K 7/14 - Glass
• C08K 5/5313 - Phosphinic compounds, e.g. R2=P(:O)OR'
• C08K 5/3492 - Triazines

Abstract

Disclosed in the present invention is a halogen-free flame-retardant ABS composite material, which comprises the following raw material components in parts by weight: 26-50 parts of an ABS resin, 25-35 parts of a PLA resin, 5-12 parts of a compatilizer, 5-12 parts of a toughening agent, 6-15 parts of a phosphorus-containing flame retardant and 2-5 parts of a nitrogen-containing flame retardant. The present invention uses the ABS resin and the PLA resin as resin matrixes for alloy design and development, and uses the compatilizer to achieve compatibility of the alloy system, thereby overcoming a performance defect caused by the difference of polarities of resins; adding the toughening agent can greatly improve the mechanical properties of the alloy material; in addition, the present invention also performs development of halogen-free flame-retardant properties. Therefore, the halogen-free flame-retardant ABS composite material of the present invention has excellent comprehensive properties and halogen-free flame-retardant properties, and the alloy material has good value in industrial application.

IPC Classes  ?

• C08L 55/02 - ABS [Acrylonitrile-Butadiene-Styrene] polymers
• C08L 67/04 - Polyesters derived from hydroxy carboxylic acids, e.g. lactones
• C08K 5/3492 - Triazines
• C08K 5/523 - Esters of phosphoric acids, e.g. of H3PO4 with hydroxyaryl compounds

Abstract

344 particles, 0.2-0.5 parts of an antioxidant and 0.2-0.5 parts of a lubricant. The self-repairing polyurethane material of the present invention maintains a relatively high initial tensile strength, also has a self-repairing efficiency reaching up to 99.3%, and greatly reduces the occurrence probability of a crazing problem. A material synthesis method is simple, and the self-repairing polyurethane material can be widely applied in the fields of aerospace, electronic products, industry, transportation, etc.

IPC Classes  ?

• C08L 75/04 - Polyurethanes
• C08K 5/5455 - Silicon-containing compounds containing nitrogen containing at least one group
• C08K 5/3462 - Six-membered rings
• C08K 3/22 - OxidesHydroxides of metals

Abstract

Disclosed are a high-CTI, halogen-free flame-retardant polyamide composite, a preparation method therefor and a use thereof. The polyamide composite, in parts by weight, comprises the following components: 40-70 parts of polyamide resin, 20-40 parts of glass fiber, 8-18 parts of hypophosphite, and 1-6 parts of melamine derivative; the polyamide resin is a composite of PA66 and PA6, the mass ratio of PA66 to PA6 is (1.5-9):1, the elemental iron content of the hypophosphite is ≤70ppm, the pH of the hypophosphite is 4-5, the terminal amino content of the PA66 resin is 50-82 ppm, and the viscosity number of the PA6 resin is 2.0-2.5. The polyamide composite of the present invention successfully increases the CTI value of the material, and the flame-retardant performance meets application requirements, providing more possibilities for the development of new energy voltage platforms from 400V to 800V and higher.

IPC Classes  ?

• C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
• C08L 77/02 - Polyamides derived from omega-amino carboxylic acids or from lactams thereof
• C08K 5/5313 - Phosphinic compounds, e.g. R2=P(:O)OR'
• C08K 5/3492 - Triazines

Abstract

Disclosed in the present invention is a glass fiber-reinforced flame-retardant polyphenyl ether composition, which comprises the following components in parts by weight: 40-70 parts of a polyphenyl ether; 10-20 parts of HIPS; 0.1-0.6 parts of an epoxy resin; 10-30 parts of glass fibers; 0.2-0.8 parts of a glass fiber surface modifier; and 8-15 parts of a flame retardant. In the present invention, by means of blending a polyphenyl ether having a specific molecular weight distribution with HIPS, the impact resistance is improved, and a high-temperature cooling liquid resistance retention rate exceeding 90% can also be achieved; furthermore, by means of the modified glass fibers and a specific content of the epoxy resin, not only can the impact resistance of the glass fiber-reinforced polyphenyl ether composition be significantly improved, but the "candlewick" effect of the glass fibers during the combustion process can also be improved, such that the glass fiber-reinforced flame-retardant polyphenyl ether composition of the present invention has a flame-retardant level of V-0. Moreover, the glass fiber-reinforced flame-retardant polyphenyl ether composition of the present invention also has the advantages of cooling-liquid resistance and good melt flowability.

IPC Classes  ?

• C08L 71/12 - Polyphenylene oxides
• C08J 5/06 - Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
• C08L 51/04 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to rubbers
• C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins

Abstract

Disclosed in the present application are a PBT composite material, and a preparation method therefor and the use thereof. The PBT composite material comprises the following components in parts by mass: 30-60 parts of a PBT resin, 10-30 parts of a flame retardant and 0.2-1.2 parts of a plasticizer. The PBT composite material can significantly reduce the adhesion of the material to a screw rod during the preparation process of a thin-wall product, thereby reducing the occurrence frequency of black spots on the surface of the product, so as to obtain a thin-wall product having low levels of injection molding black spots; in addition, the obtained composite material still has excellent flame retardant property in the preparation of a thin-wall product, and has a good tensile strength and a good impact strength. Moreover, the preparation method provided in the present application is simple and is beneficial to actual production.

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08L 23/08 - Copolymers of ethene
• C08L 67/00 - Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chainCompositions of derivatives of such polymers
• C08L 71/00 - Compositions of polyethers obtained by reactions forming an ether link in the main chainCompositions of derivatives of such polymers
• C08K 5/523 - Esters of phosphoric acids, e.g. of H3PO4 with hydroxyaryl compounds

Abstract

A polypropylene composition, comprising the following components in parts by weight: 30-50 parts of a polypropylene resin; 15-24 parts of a piperazine flame retardant; 6-14 parts of an inorganic phosphide; 0.5-1.5 parts of a synergistic flame retardant; 20-35 parts of basalt fibers; 7-15 parts of hollow glass beads; and 2-5 parts of a compatilizer. The polypropylene composition selects a high-heat-resistance piperazine flame retardant system; by adding a combination of the basalt fibers and the hollow glass beads, the thermal insulation effect of the material can be effectively improved, and in the burning process, a good framework supporting effect can be achieved, and it is not prone to deformation and collapse, thereby achieving excellent ablation resistance, reducing the warping deformation of injection molded parts, and achieving a polypropylene composition having both characteristics of low warpage and ablation resistance; and particularly, the use requirements of large battery pack case materials on the material can be met.

IPC Classes  ?

• C08L 23/10 - Homopolymers or copolymers of propene
• C08L 51/06 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
• C08K 7/28 - Glass
• C08K 7/10 - Silicon-containing compounds
• C08K 5/3462 - Six-membered rings
• C08K 3/22 - OxidesHydroxides of metals
• C08K 5/3492 - Triazines

Abstract

The present application relates to a starch-based composite material, a preparation method therefor and the use thereof, and a plastic product. Components of the starch-based composite material comprise: a polyester material, starch and a polyhydroxy compound, wherein on the basis of the total mass of the polyester material and the starch, the mass percentage of the polyester material is 15%-85%, and the mass percentage of the starch is 15%-85%; the mass of the polyhydroxy compound is 10%-50% of the mass of the starch; and the average particle size of the starch is less than or equal to 1μm.

IPC Classes  ?

• C08L 3/02 - StarchDegradation products thereof, e.g. dextrin
• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08L 67/04 - Polyesters derived from hydroxy carboxylic acids, e.g. lactones
• C08K 5/053 - Polyhydroxylic alcohols

Abstract

Disclosed is a black PA/ABS resin composition, comprising the following components in parts by weight: 30-80 parts of PA6 resin, 10-30 parts of ABS resin, 10-30 parts of an inorganic filler, 0.1-1 part of carbon black, and 0.1-1 part of an auxiliary agent. By using the polymer composition provided by the present invention to carry out laser marking on products, images are clear, mark colors are stable, and the mark warpage is low.

IPC Classes  ?

• C08L 77/02 - Polyamides derived from omega-amino carboxylic acids or from lactams thereof
• C08L 55/02 - ABS [Acrylonitrile-Butadiene-Styrene] polymers
• C08K 3/34 - Silicon-containing compounds
• C08K 3/04 - Carbon

Abstract

Disclosed are a polycarbonate composition and a preparation method thereof. The product introduces a specific proportioning amount of an acrylate copolymer to serve as a component for improving processing fluidity, such that the product has excellent processing fluidity in thin-wall designing, and also has ideal mechanical properties and flame retardance.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• C08L 55/02 - ABS [Acrylonitrile-Butadiene-Styrene] polymers
• C08L 33/12 - Homopolymers or copolymers of methyl methacrylate

Abstract

A polycarbonate composition and a use thereof. The product introduces a processing fluidity improver, such that the processing process fluidity of the whole product can be effectively improved, and after processing, especially after thin-wall processing, the product has good toughness, injection molding stability and appearance performance. The processing fluidity improver is a mixture of a polydimethylsiloxane containing a terminal hydroxyl group and a polystyrene containing an epoxy group.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• C08L 55/02 - ABS [Acrylonitrile-Butadiene-Styrene] polymers
• C08L 83/04 - Polysiloxanes
• C08L 25/06 - Polystyrene

Abstract

Disclosed in the present invention are a PP composite material as well as a preparation method therefor and the use thereof. The PP composite material comprises the following components in parts by weight: 40-60 parts of a PP resin, 10-20 parts of a POE resin, 10-30 parts of talcum powder, 1-4 parts of carbon nanotubes, 4-10 parts of carbon black, 0.5-1.5 parts of a dispersing agent and 0-4 parts of an auxiliary agent. The obtained material has good resistance stability while having good material fluidity, appearance flatness and impact toughness, and is therefore particularly suitable for forming large-scale exterior parts such as automobile bumpers and parts with high requirements on impact resistance.

IPC Classes  ?

• C08L 23/12 - Polypropene
• C08L 23/14 - Copolymers of propene
• C08L 23/08 - Copolymers of ethene
• C08K 3/34 - Silicon-containing compounds
• C08K 3/04 - Carbon

Abstract

Disclosed in the present invention are a low precipitation and high glow-wire resistant toughened POM composition, and a preparation method therefor and a use thereof. The POM composition comprises the following components in parts by weight: 100 parts of POM resin; 20-30 parts of thermoplastic polyurethane elastomer; and 10-20 parts of synergistic masterbatch. The synergistic masterbatch comprises the following components in percentage by weight: 50%-70% of polyamide and 30%-50% of melamine cyanurate. According to the present invention, the melamine cyanurate is pre-coated with the polyamide to form the synergistic masterbatch, and then the synergistic masterbatch is mixed with the thermoplastic polyurethane elastomer, thereby reducing the degradation of POM during extrusion. In this way, a low precipitation and high glow-wire resistant toughened POM composition is prepared, the glow-wire flammability index thereof can reach 650°C/2.0mm, and the mold deposit is not prone to generating during processing.

IPC Classes  ?

• C08L 59/00 - Compositions of polyacetalsCompositions of derivatives of polyacetals
• C08L 75/04 - Polyurethanes
• C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
• C08K 5/3492 - Triazines
• C08J 3/22 - Compounding polymers with additives, e.g. colouring using masterbatch techniques

Abstract

A polypropylene composition containing plant fibers, and a preparation method therefor and the use thereof. The polypropylene composition containing plant fibers comprises the following components in parts by weight: 60-75 parts of a polypropylene, 10-35 parts of plant fibers, 1-5 parts of a compatilizer, 1-4 parts of a phenolic compound and 0-5 parts of an auxiliary agent. The polypropylene composition containing plant fibers has a high plant fiber filling rate and excellent mechanical properties; in addition, the water absorption rate of a material, which has been subjected to secondary processing, is not sharply increased and is maintained within a relatively stable range, and the polypropylene composition has important practical application value.

IPC Classes  ?

• C08L 23/12 - Polypropene
• C08L 97/02 - Lignocellulosic material, e.g. wood, straw or bagasse

Abstract

Disclosed in the present invention is an HIPS composite material, comprising the following components in parts by weight: 85-90 parts of HIPS, 5.5-9.5 parts of a star-shaped SBS block copolymer and 4-6 parts of mineral oil. By means of adding a specific amount of the star-shaped SBS block copolymer and the specific type of mineral oil to HIPS, the present invention can significantly improve the anti-falling performance of the composite material, and remarkably relieve flow marks generated during injection molding.

IPC Classes  ?

• C08L 51/04 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to rubbers
• C08L 53/02 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers of vinyl aromatic monomers and conjugated dienes
• C08K 5/01 - Hydrocarbons

Abstract

Disclosed in the present application are a foamed polypropylene composition, a preparation method therefor, and a use thereof. The foamed polypropylene composition comprises the following components in parts by mass: 52-98 parts of PP resin, 0.3-3.2 parts of high specific surface area filler, 0.3-2.2 parts of polyhydroxy compound, and 0.3-2.2 parts of melt elasticity regulator. In the foamed polypropylene composition, PP resin with a certain melt flow rate is selected and compounded with the high specific surface area filler, the polyhydroxy compound, and the melt elasticity regulator in order to increase the expandibility of the composition; the cell size of the composition can be reduced and the product also has high fluidity, facilitating the rapid forming of injection moulding foam.

IPC Classes  ?

• C08L 23/12 - Polypropene
• C08J 9/08 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
• C08K 3/22 - OxidesHydroxides of metals
• C08K 5/103 - EstersEther-esters of monocarboxylic acids with polyalcohols
• C08K 5/1535 - Five-membered rings
• C08K 5/053 - Polyhydroxylic alcohols

Abstract

The application relates to a biodegradable composition, and a preparation method and use therefor. The biodegradable composition is prepared from the following raw materials in parts by weight: 40-91 parts of a biodegradable polyester, 2-20 parts of polylactic acid, 7-40 parts of an inorganic filler, and 0.1-0.8 part of a chain extender. The high-frequency 100 Hz composite viscosity of the biodegradable polyester is 50-500 Pa·S. The melt flow rate of the biodegradable polyester under test conditions of 190 C° and 2.16 kg is 2-10 g/10 min. The biodegradable composition of the present application can effectively control the occurrence of perforation air leakage, the heat-sealing strength of a prepared film bag is larger than or equal to 6MPa, and fluorine-containing organic compounds are not used.

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08L 67/04 - Polyesters derived from hydroxy carboxylic acids, e.g. lactones
• C08K 3/26 - CarbonatesBicarbonates
• C08K 3/34 - Silicon-containing compounds

Abstract

Disclosed in the present invention are a polypropylene composition resistant to high-temperature creep, and a preparation method therefor and the use thereof. The polypropylene composition resistant to high-temperature creep comprises the following components in parts by weight: 70-92 parts of a polypropylene resin; 5-20 parts of a branched linear low-density polyethylene resin; and 3-10 parts of an ultrahigh-molecular-weight polypropylene resin, wherein the branched linear low-density polyethylene resin is obtained by subjecting a linear low-density polyethylene resin to an irradiation treatment, and the ratio of M1/M2 of the branched linear low-density polyethylene resin is not less than 10:1, with M2 being 3-45 g/10 min. By adding a small amount of the branched linear low-density polyethylene resin and the ultrahigh-molecular-weight polypropylene resin to a polypropylene resin system, a super-entanglement structure is formed by means of a bridging effect, thereby making the polypropylene composition have good resistance to high-temperature creep; moreover, all the components are compatible with one another, and the polypropylene composition has a good fluidity.

IPC Classes  ?

• C08L 23/12 - Polypropene
• C08L 23/08 - Copolymers of ethene

Abstract

Provided in the present application are an aliphatic-aromatic polyester, and a preparation method therefor and the use thereof. The aliphatic-aromatic polyester has a high whiteness index and a low acid value, and is degradable; and when the aliphatic-aromatic polyester is used for preparing a degradable material, the ageing resistance of the material can be improved, the variation of color values before and after aging is low, and the material still has a relatively high impact strength after aging, thereby avoiding the loss of mechanical properties.

IPC Classes  ?

• C08G 63/20 - Polyesters having been prepared in the presence of compounds having one reactive group or more than two reactive groups
• C08G 63/183 - Terephthalic acids
• C08G 63/78 - Preparation processes
• C08G 63/91 - Polymers modified by chemical after-treatment
• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• A47G 21/18 - Drinking straws or the like

Abstract

The present invention relates to a polypropylene composition, and a preparation method therefor and the use thereof. The polypropylene composition comprises the following components: a polypropylene resin, a composite filler, a compatibilizer, a lubricant and other auxiliaries. The polypropylene composition has a low density, a high notch impact strength and low molding shrinkage, and the surface of a large automobile part prepared therefrom by means of injection molding is free of pocking marks, and is smooth and glossy.

IPC Classes  ?

• C08L 23/12 - Polypropene
• C08L 51/06 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
• C08K 7/24 - Expanded, porous or hollow particles inorganic
• C08K 7/28 - Glass
• C08K 9/06 - Ingredients treated with organic substances with silicon-containing compounds
• B60R 19/03 - Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by material, e.g. composite

Abstract

Disclosed in the present invention are a PCR-PET composition, and a preparation method therefor and a use thereof. The PCR-PET composition comprises the following components in parts by weight: 65-85 parts of a PCR-PET resin; 15-30 parts of POE-g-MAH; and 0.5-2 parts of an epoxy resin. According to the present invention, by selecting a PCR-PET resin having a specific PVC content, and adding certain amounts of POE-g-MAH and an epoxy resin, a high-toughness PCR-PET composition having the impact strength greater than 20 kJ/m2, the elongation at break greater than 22%, and good processing stability is prepared; the present invention can meet use requirements of products having high toughness requirements, and implements recycling of PCR-PET.

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08L 51/06 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
• C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins

Abstract

The application discloses an expanded polypropylene composite material, and a preparation method and use therefor. The expanded polypropylene composite material is prepared from the following raw materials in parts by mass: 53-80 parts of PP resin, 8-22 parts of polyolefin elastomer, 8-22 parts of talcum powder, 0.4-2.6 parts of a nano filler and 0.2-0.8 part of a foaming agent. The expanded polypropylene composite material has excellent appearance, high bending modulus and good foaming performance. Moreover, the preparation method is simple and convenient to implement, has a cost advantage, is high in design freedom, and is suitable for actual production and application.

IPC Classes  ?

• C08L 23/14 - Copolymers of propene
• C08J 9/08 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
• C08L 23/08 - Copolymers of ethene
• C08K 3/26 - CarbonatesBicarbonates
• C08K 3/34 - Silicon-containing compounds
• C08K 3/36 - Silica
• C08K 3/22 - OxidesHydroxides of metals

Abstract

The application relates to a biodegradable composition, and a preparation method and use therefor. The biodegradable composition comprises the following components in parts by weight: 40-91 parts of a biodegradable polyester, 5-20 parts of polylactic acid, 1-10 parts of polybutylene succinate, 7-40 parts of calcium carbonate, and 0.1-3 parts of a nucleating agent. The polylactic acid is a PLLA/PDLA copolymer, and the content of D is 85-99%. The extreme film blowing linear speed of the biodegradable composition at the temperature change rate of 10 C°/min is 80-120 m/min. The biodegradable composition of the present application has excellent film bubble stability, can achieve relatively high extreme linear speed, and facilitates industrial continuous production.

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08L 67/04 - Polyesters derived from hydroxy carboxylic acids, e.g. lactones
• C08K 3/26 - CarbonatesBicarbonates
• C08K 3/34 - Silicon-containing compounds
• C08K 3/36 - Silica

Abstract

Disclosed in the present invention are a PCR-PET composition, and a preparation method therefor and a use thereof. The PCR-PET composition comprises the following components in parts by weight: 78-88 parts of a PCR-PET resin; 12-20 parts of a toughening agent; 0.2-0.8 parts of a nucleating agent; and 0-0.5 parts of an antioxidant. According to the present invention, a PCR-PET resin having a specific yellow flake content is selected, a certain amount of a toughening agent (E-MA-GMA or E-BA-GMA) is added, and the GMA content of the toughening agent is optimized, such that a high-toughness PCR-PET composition having an impact strength greater than 19 kJ/m2 and allowing for production of injection molded parts having good appearance is prepared, thereby satisfying the use requirements of products having high toughness and realizing recycling of PCR-PET.

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08L 23/08 - Copolymers of ethene

Abstract

A scratch-resistant soft-touch polypropylene composite material, the scratch-resistant soft-touch polypropylene composite material comprising the following components in parts by weight: 95-105 parts of polypropylene matrix, 10-55 parts of reinforcing filler, 5-25 parts of expanded graphite, 3-10 parts of buckyballs, 5-10 parts of hollow glass microspheres, and 1-5 parts of a coupling agent. The polypropylene composite material has high surface crystallinity, to provide good scratch resistance, and low internal crystallinity, causing the overall polypropylene material have a good soft touch.

IPC Classes  ?

• C08L 23/14 - Copolymers of propene
• C08L 23/12 - Polypropene
• C08K 7/24 - Expanded, porous or hollow particles inorganic
• C08K 7/28 - Glass
• C08K 7/14 - Glass
• C08K 3/04 - Carbon
• C08K 5/544 - Silicon-containing compounds containing nitrogen
• C08K 13/04 - Ingredients characterised by their shape and organic or inorganic ingredients

Abstract

The present invention belongs to the technical field of quantum-dot diffusion plates, and particularly relates to a quantum-dot diffusion plate, and a preparation method therefor and the application thereof. The quantum-dot diffusion plate comprises a diffusion layer, a quantum dot layer and a transparent layer, wherein the quantum dot layer is arranged between the diffusion layer and the transparent layer. The design of the diffusion layer and the transparent layer, which are respectively at the upper portion and lower portion, can ensure that quantum dots are protected by the upper and lower layers as well as ensuring a lighting effect of the diffusion plate, thereby preventing the quantum dots from inactivation caused by the impact of external factors during the use and storage of the quantum dots, and improving the brightness retention rate.

IPC Classes  ?

• G02B 5/02 - Diffusing elementsAfocal elements
• B82Y 20/00 - Nanooptics, e.g. quantum optics or photonic crystals
• B82Y 40/00 - Manufacture or treatment of nanostructures
• C09K 11/02 - Use of particular materials as binders, particle coatings or suspension media therefor
• C09K 11/08 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials
• C09K 11/70 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing phosphorus
• C09K 11/88 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing selenium, tellurium or unspecified chalcogen elements
• F21V 9/30 - Elements containing photoluminescent material distinct from or spaced from the light source

Abstract

The present invention relates to the technical field of biodegradable materials, and in particular to a biodegradable material and a manufacturing method therefor and a use thereof. The biodegradable material comprises the following components in parts by weight: 60-90 parts of flexible biodegradable polyester, 2-10 parts of polylactic acid, 2-30 parts of an inorganic filler, and 0-0.95 part of an auxiliary agent. The flexible biodegradable polyester of the biodegradable material has a molecular weight distribution coefficient PDI of 1.7 to 2.3 and a carboxyl end group content of less than 25 mol/t after shearing at 180°C. The biodegradable material manufactured in the present invention has the isotropy of longitudinal and transverse tearing under high and low temperature conditions, and has good aging resistance.

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08L 67/04 - Polyesters derived from hydroxy carboxylic acids, e.g. lactones
• C08K 3/26 - CarbonatesBicarbonates
• C08K 3/34 - Silicon-containing compounds
• C08J 5/18 - Manufacture of films or sheets

Abstract

Disclosed is a shrinkage-resistant polyphenylene ether composition, comprising the following components in parts by weight: 40-70 parts of a polyphenylene ether resin, 5-25 parts of a polystyrene resin, 1-4 parts of a toughening agent, 0.1-2 parts of a foaming agent, 0-30 parts of glass fiber, and 0-1 parts of an antioxidant; the weight ratio of the polyphenylene ether resin to the polystyrene resin is 2-14. The present invention prepares a polyphenylene ether composition having excellent anti-shrinkage effects by means of adding a specific proportion of polystyrene resin and foaming agent to a polyphenylene ether resin, which can significantly reduce post-shrinkage of injection molded parts during a cooling process and ensure relatively high toughness of a material, and is particularly suitable for thick-walled parts in the field of automotive electronics.

IPC Classes  ?

• C08L 71/12 - Polyphenylene oxides
• C08L 25/06 - Polystyrene
• C08J 9/08 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
• C08J 9/10 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen
• C08J 9/32 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof from compositions containing microballoons, e.g. syntactic foams

Abstract

The present application belongs to the technical field of polymeric materials and discloses a polylactic acid, a preparation method therefor, and a use thereof. The polylactic acid of the present application has an intrinsic viscosity of 0.79-1.06 dl/g, a molecular weight distribution index (PDI) of 1.49-1.52, a lactide monomer content of < 0.5% by mass, and a shear viscosity in a range of 0.01-1 s-1 under the test condition of 190°C, and the shear viscosity and the shear rate of the polylactic acid satisfy a specific relationship. Compared with a conventional polylactic acid, the polylactic acid has a higher melt flow rate, is stable and does not stick to a mold and an injection molding opening during injection molding, and has high injection molding efficiency; and the resulting product has better aging resistance and is suitable for injection molding to obtain a plastic part having a wall thickness of 0.4 mm or less, such as a food packaging product, e.g., a meal box, a bowl, a plate, or a water cup.

IPC Classes  ?

• C08G 63/08 - Lactones or lactides
• C08G 63/85 - Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof
• C08L 67/04 - Polyesters derived from hydroxy carboxylic acids, e.g. lactones

Abstract

The present invention relates to the technical field of high polymer materials, and disclosed are an insulating flame-retardant polycarbonate composition and a use thereof. According to the polycarbonate composition of the present invention, by means of cooperation of specific types of a voltage stabilizer and a dispersing agent, the CTI electrical properties of a product can be effectively improved, the requirement of CTI 300 V≥50 drops is satisfied, thereby achieving excellent flame retardance; and additionally, enough normal-temperature toughness and low-temperature toughness are achieved, and the polycarbonate composition can be fully applied to the field of new energy.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• C08L 51/04 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to rubbers
• C08L 23/30 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers modified by chemical after-treatment by oxidation
• C08K 5/08 - Quinones

Abstract

The present invention belongs to the field of polycarbonate materials. Specifically disclosed are a polycarbonate composition, and a preparation method therefor and the use thereof. By adding a certain amount of PCT, a metal deactivator and a compatibilizer containing a GMA functional group in the present invention, the polycarbonate composition has good compatibility and stability, thereby ensuring sufficient strength and processing stability, such that the polycarbonate composition has good flame retardance, heat resistance and chemical resistance.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08L 27/18 - Homopolymers or copolymers of tetrafluoroethene
• C08L 51/00 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers
• C08K 5/25 - Carboxylic acid hydrazides

Abstract

Disclosed are an aging-resistant insulating polycarbonate composition and a use thereof, belonging to the field of polymer materials. The polycarbonate composition of the present invention, by means of pairing a special type of voltage stabilizer with a dispersing agent, can not only effectively increase the CTI electrical property of a product, causing CTI to be 400V at greater than or equal to 50 drops, and enable the product to have excellent flame retardant properties, but can also achieve sufficient aging resistance. The polycarbonate composition is very suitable for preparation of photovoltaic inserts.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• C08L 23/30 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers modified by chemical after-treatment by oxidation
• C08L 27/18 - Homopolymers or copolymers of tetrafluoroethene
• C08L 83/10 - Block- or graft-copolymers containing polysiloxane sequences
• C08K 5/07 - AldehydesKetones
• C08K 5/521 - Esters of phosphoric acids, e.g. of H3PO4

Abstract

The present invention relates to a polyester resin composition, a preparation method thereof and use thereof. The polyester resin composition includes a PCT resin, a white pigment, a reinforcing material, a polyester elastomer, and other additives. The polyester resin composition provided by the present invention has a strong binding force with a silica gel; when the polyester resin composition is made into an LED reflecting support, the LED reflecting support is not easy to separate from the silica gel in high temperature and high humidity environments, such that the service life of an LED lamp bead can be effectively prolonged; and meanwhile, the polyester resin composition has good toughness, and would not cause the problem of powder falling under repeated stress.

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08J 3/20 - Compounding polymers with additives, e.g. colouring
• C08K 7/10 - Silicon-containing compounds
• H10H 20/854 - Encapsulations characterised by their material, e.g. epoxy or silicone resins

Abstract

The present invention discloses a polyester, a preparation method therefor and use thereof. The polyester includes repeating units derived from the following components: a first component A, based on the total molar weight of the first component A, including: a1) 81-100 mol % of succinic acid, or an ester derivative thereof or an anhydride derivative thereof, and a2) 0-19 mol % of a dicarboxylic acid other than succinic acid, or an ester derivative thereof or an anhydride derivative thereof; a second component B: 1,4-butanediol; and a third component C: a dimer(1,4-butanediol); based on the total molar weight of the first component A, the molar content of the repeating unit —CH2CH2CH2CH2—O— in the third component C is 0.05-3.0 mol %. In the present invention, the molar content of the repeating unit —CH2CH2CH2CH2—O— in dimer(1,4-butanediol) is controlled to 0.05-3.0 mol %, and thus, the resin color of the polyester can be effectively improved.

IPC Classes  ?

• C08G 63/20 - Polyesters having been prepared in the presence of compounds having one reactive group or more than two reactive groups
• C08G 63/85 - Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof

Abstract

The present invention relates to the technical field of polymers, and in particular to a polyamide molding composition and a preparation method therefor and a use thereof. The polyamide molding composition comprises the following components in parts by weight: 40-75 parts of a PAXC/YC resin, 15-45 parts of a white pigment, 5-20 parts of a reinforcing filler, and 0.5-5 parts of an anti-yellowing agent; and the amino end group content [n] of the PAXC/YC resin meets the following range: 10mol/t≤[n]≤100mol/t; the anti-yellowing agent comprises at least one of magnesium titanate and magnesium phosphate. The polyamide molding composition prepared in the present invention can effectively inhibit yellowing of the resin during high-temperature baking, and significantly improve the reflectivity of blue light having a wavelength of 450nm in an LED packaging process.

IPC Classes  ?

• C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
• C08K 3/24 - AcidsSalts thereof
• C08K 3/22 - OxidesHydroxides of metals
• C08K 7/14 - Glass
• G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics

Abstract

The present invention belongs to the technical field of polymer engineering plastics. Disclosed are a PBT composite material, and a preparation method therefor and the use thereof. The PBT composite material provided by the present invention comprises the following components in parts by mass: 30-60 parts of a PBT resin, 25-40 parts of alkali-free glass fibers, 12-20 parts of aluminum diethyl hypophosphite, 2-8 parts of melamine polyphosphate, and 1-4 parts of a phosphate. When the PBT composite material provided by the present invention is prepared into a thin-wall (≤0.4 mm) product, the PBT composite material still has a good flame retardant property, and the obtained product has good fluidity, and also has good tensile strength and impact strength; and the preparation method provided by the present invention is simple, and is beneficial to actual production.

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08L 23/08 - Copolymers of ethene
• C08K 7/14 - Glass
• C08K 9/00 - Use of pretreated ingredients
• C08K 5/5313 - Phosphinic compounds, e.g. R2=P(:O)OR'
• C08K 5/3492 - Triazines
• C08K 5/523 - Esters of phosphoric acids, e.g. of H3PO4 with hydroxyaryl compounds
• C08K 13/06 - Pretreated ingredients and ingredients covered by the main groups

Abstract

The present invention relates to the field of flame-retardant carbonates. Specifically, disclosed are a flame-retardant polycarbonate composition, a preparation method therefor and a use thereof. The flame-retardant polycarbonate composition of the present invention comprises the following components in parts by weight: 100 parts of polycarbonate, 0.01-0.1 parts of a sulfonate flame retardant, 0.03-0.1 parts of an anti-dripping agent, and 2-8 parts of talcum powder. The melt flow index of polycarbonate is 5.5-25 g/10 min; the average particle size of the talcum powder is 4-8 microns, and the pH value of the talcum powder is 7.5-8.8. According to the present invention, by controlling the particle size and the pH value range of the talcum powder, the flame-retardant polycarbonate composition has excellent flame resistance of 5 VA at 2.0 mm, also has the advantages of high mechanical strength and environmental protection, and is particularly suitable for electronic and electrical products.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• C08L 27/18 - Homopolymers or copolymers of tetrafluoroethene
• C08K 3/34 - Silicon-containing compounds
• C08K 5/42 - Sulfonic acidsDerivatives thereof

Abstract

A polypropylene composite material, and a preparation method therefor and a use thereof, relating to the field of automotive interior and exterior materials. The polypropylene composite material comprises the following components in parts by weight: 59-90 parts of a polypropylene resin, 5-15 parts of a high-density polyethylene resin, 5-10 parts of a 1-octene-ethylene block copolymer, 5-10 parts of an ethylene-propylene copolymer, 5-15 parts of glass fiber, and 0.05-2 parts of a nucleating agent. The compounding of the 1-octene-ethylene block copolymer and the ethylene-propylene copolymer can improve the bending and cracking resistance of a glass fiber reinforced polypropylene composite resin; additionally, the addition of the high-density polyethylene resin can uniformly disperse the glass fiber in the polypropylene resin, making the polypropylene composite material have a good appearance.

IPC Classes  ?

• C08L 23/12 - Polypropene
• C08L 23/06 - Polyethene
• C08L 53/00 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers
• C08L 23/08 - Copolymers of ethene
• C08K 3/04 - Carbon
• C08K 3/32 - Phosphorus-containing compounds
• C08K 5/523 - Esters of phosphoric acids, e.g. of H3PO4 with hydroxyaryl compounds
• C08K 7/14 - Glass
• C08K 13/04 - Ingredients characterised by their shape and organic or inorganic ingredients

Abstract

The present disclosure relates to a polypropylene composition resistant to thermo-oxidative aging, a preparation method and a use thereof. The polypropylene composition resistant to thermo-oxidative aging comprises polypropylene, a toughener, a filler, carbon black and other additive or additives. The polypropylene composition resistant to thermo-oxidative aging provided in the present disclosure has a better thermo-oxidative aging resistance by adding specific carbon black, without any complicated surface modification for the carbon black, and the polypropylene composition can be widely used in auto parts or cables.

IPC Classes  ?

• C08K 3/04 - Carbon
• C08J 3/20 - Compounding polymers with additives, e.g. colouring
• C08K 3/26 - CarbonatesBicarbonates
• C08K 3/34 - Silicon-containing compounds
• C08L 23/12 - Polypropene

Abstract

A halogen-free flame-retardant polyamide composition, and a preparation method therefor and the use thereof. The halogen-free flame-retardant polyamide composition comprises the following components in parts by weight: 30-80 parts of a polyamide resin, 10-40 parts of glass fibers, 10-30 parts of a halogen-free flame retardant, and 0.1-3 parts of a zinc-containing compound, wherein the melting point of the zinc-containing compound is less than or equal to 600°C, and the halogen-free flame retardant is a dialkyl phosphinate salt. By adding an inorganic zinc-containing compound having a specific melting point, ionization will take place at a flame temperature to generate zinc ions, which are coordinated with the polyamide resin and the halogen-free flame retardant to prevent the phenomenon of molten droplets during the combustion process, and the flowability of the polyamide composition will not be affected.

IPC Classes  ?

• C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
• C08K 5/5313 - Phosphinic compounds, e.g. R2=P(:O)OR'
• C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
• C08L 77/02 - Polyamides derived from omega-amino carboxylic acids or from lactams thereof
• C08K 7/14 - Glass

Abstract

A polycarbonate composition having a low shrinkage rate, and a preparation method therefor and a use thereof. The polycarbonate composition having a low shrinkage rate comprises the following components in parts by weight: 55-99.9 parts of a polycarbonate resin, 0.5-10 parts of a toughening agent, 0.1-2 parts of a spherical filler, and 5-30 parts of a composite flaky filler. The polycarbonate composition has a low shrinkage rate and excellent rigidity and toughness, and a product prepared from the polycarbonate composition has high weld line strength and good appearance, and can meet the quality requirements of processing technologies and post-assembly.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• C08L 55/02 - ABS [Acrylonitrile-Butadiene-Styrene] polymers
• C08L 23/08 - Copolymers of ethene
• C08K 7/18 - Solid spheres inorganic
• C08K 7/00 - Use of ingredients characterised by shape
• C08K 3/34 - Silicon-containing compounds

Abstract

A semi-aromatic polyamide composition comprises the following components in parts by weight: 52-75 parts of a semi-aromatic polyamide resin, 25-45 parts of a glass fiber and 0-3 parts of an elastomer. The concentration of a terminal amino group of the semi-aromatic polyamide resin is 100-150 mol/t, and the concentration of a terminal carboxyl group of the semi-aromatic polyamide resin is ≤ 50 mol/t. The average diameter of the glass fiber is 0.1-15 microns. By means of investigation of the concentration of the terminal amino group, the concentration of the terminal carboxyl group and the relative viscosity of the semi-aromatic polyamide, and exploration of the diameter of the glass fiber, the composition achieves remarkably improved hydrolysis resistance.

IPC Classes  ?

• C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
• C08L 23/08 - Copolymers of ethene
• C08K 7/14 - Glass

Abstract

Disclosed in the present invention is a flame-retardant polyamide composition. The flame-retardant polyamide composition comprises the following components in parts by weight: 35-75 parts of a polyamide resin, 5-22 parts of an organic hypophosphite flame retardant and 0.1-5 parts of a glowing filament modifier, wherein the glowing filament modifier is a nitrogen-containing metal phosphate. In the present invention, by means of adding the specific glowing filament modifier into the flame-retardant polyamide composition, a glowing filament temperature can be increased.

IPC Classes  ?

• C08L 77/02 - Polyamides derived from omega-amino carboxylic acids or from lactams thereof
• C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
• C08K 5/5313 - Phosphinic compounds, e.g. R2=P(:O)OR'
• C08K 3/32 - Phosphorus-containing compounds

Abstract

Disclosed are a semi-aromatic polyester, and a preparation method therefor and a use thereof. In the present invention, on the basis of the total molar amount of diacid, the molar content of a repeating unit —CH2CH2CH2CH2—O— in dimer(1,4-butanediol) is controlled to be 0.05-0.35 mol %, which can effectively improve the resin color of the semi-aromatic polyester.

IPC Classes  ?

• C08G 63/672 - Dicarboxylic acids and dihydroxy compounds
• C08G 63/183 - Terephthalic acids
• C08G 63/85 - Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof

Abstract

The present invention discloses a semi-aromatic polyester, and a preparation method therefor and an application thereof. The semi-aromatic polyester has a specific scope of double bond content. Compared with the existing semi-aromatic polyester, the semi-aromatic polyester of the present invention has better melting heat retention stability and fine color.

IPC Classes  ?

• C08G 63/183 - Terephthalic acids
• C08G 63/20 - Polyesters having been prepared in the presence of compounds having one reactive group or more than two reactive groups
• C08G 63/78 - Preparation processes

Abstract

The present invention relates to the technical field of fiber preparation. Disclosed are a high-pressure sampling system and a sampling method thereof, and a high-pressure flash apparatus. The high-pressure sampling system comprises a reaction kettle, a first sampling apparatus, and a second sampling apparatus. A first sampling tube is connected between the first sampling apparatus and the reaction kettle; a second sampling tube is connected between the second sampling apparatus and the reaction kettle; the first sampling tube is partially inserted into the bottom of the reaction kettle; the second sampling tube is partially inserted into the top of the reaction kettle; a first sampling valve is arranged on the first sampling tube; a second sampling valve is arranged on the second sampling tube; and the first sampling valve and the second sampling valve are both arranged outside the reaction kettle. According to the high-pressure sampling system of the present invention, by determining the composition of a high-pressure flash spinning fluid and the composition of a gas-phase medium inside a reaction kettle, the composition and the optimal formation conditions of the high-pressure flash spinning fluid can be clarified, providing a strong basis for the controllable preparation of the high-pressure flash spinning fluid and high-pressure flash nano/microfibers.

IPC Classes  ?

• G01N 1/10 - Devices for withdrawing samples in the liquid or fluent state

Abstract

A dispersion flash-spinning device and method. The device comprises a reaction container (100), a negative pressure pumping apparatus (200) and a heating apparatus (300); the reaction container (100) is provided with a first connecting opening (1), a second connecting opening (2) and a third connecting opening (3); the first connecting opening (1) and the second connecting opening (2) are located opposite to each other; a spinning spinneret (400) is connected to the first connecting opening (1), a deflection apparatus (500) is connected to the second connecting opening (2), and the negative pressure pumping device (200) is connected to the third connecting opening (3).

IPC Classes  ?

• D01D 5/11 - Flash-spinning
• D01D 13/02 - Elements of machines in combination

Abstract

The present invention relates to a cleaning device using a traction mode. The cleaning device comprises a device frame, and a cleaning assembly, a first conveying assembly, a second conveying assembly and a first driving assembly which are all mounted on the device frame. The first conveying assembly and the second conveying assembly are arranged on two sides of the device frame respectively, the first conveying assembly comprising a first transmission mechanism, a first conveying member, and locking portions mounted on the first conveying member, and the second conveying assembly comprising a second transmission mechanism, a second conveying member and press-fit portions mounted on the second conveying member and capable of being fitted to the locking portions. The device frame or the first transmission mechanism is provided with a separation and engagement assembly for driving a feeding end of the first transmission mechanism to rotate. After entering the locking portions and the press-fit portions, materials are clamped by means of resetting the two portions; then the first conveying member and the second conveying member drive said locking portions, said press-fit portions and the clamped materials to be conveyed forwards; and the subsequently fed materials are also clamped by different locking portions and press-fit portions. Therefore, using the traction mode to convey materials can also achieve continuous automatic feeding of materials.

IPC Classes  ?

• B29B 17/00 - Recovery of plastics or other constituents of waste material containing plastics

Abstract

The present invention provides a PA10T molding composite material that can be used to produce LED display light source reflection supports. The width of the crystallization peak at half maximum ΔT1/2 is adjusted to be 3-10° C., the whiteness is adjusted to be less than 26, and the 460 nm light source reflectivity is adjusted to be less than 6.5%, such that the PA 10T molding composite material has the advantages of low blue light, high contrast, and high gray scale, and can satisfy requirements for a packaging process and long-term reliability, and can be used as a packaging product to manufacture high-contrast LED display light source refection supports applicable in multiple scenarios.

IPC Classes  ?

• C08K 3/34 - Silicon-containing compounds
• B29B 7/00 - MixingKneading
• B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
• B29K 77/00 - Use of polyamides, e.g. polyesteramides, as moulding material
• B29K 105/12 - Condition, form or state of moulded material containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
• B29K 507/04 - Carbon
• B29K 509/02 - Ceramics
• B29L 11/00 - Optical elements, e.g. lenses, prisms
• C08J 3/20 - Compounding polymers with additives, e.g. colouring
• C08K 3/04 - Carbon
• H01L 33/58 - Optical field-shaping elements

Abstract

The present invention discloses a semi-aromatic polyester, a preparation method therefor and use thereof. The content of hydroxyl in a semi-aromatic polyester is controlled, and particularly, the content of hydroxyl linked to aliphatic dicarboxylic acid in the semi-aromatic polyester is controlled to 17-40 mmol/kg, the content of hydroxyl linked to aromatic dicarboxylic acid in the semi-aromatic polyester is controlled to 17-40 mmol/kg, and the total content of hydroxyl is controlled to 35-80 mmol/kg, such that the compatibility of the semi-aromatic polyester with materials, e.g., polylactic acid can be significantly improved, thereby obtaining a high-strength tear-resistant film material.

IPC Classes  ?

• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• C08G 63/183 - Terephthalic acids
• C08G 63/20 - Polyesters having been prepared in the presence of compounds having one reactive group or more than two reactive groups
• C08G 63/81 - Preparation processes using solvents
• C08J 5/18 - Manufacture of films or sheets
• C08L 75/06 - Polyurethanes from polyesters

Abstract

The present invention relates to the technical field of degradable materials, and provides a biodegradable aliphatic polyester composition, and a preparation method therefor and a use thereof as a packaging film. The biodegradable aliphatic polyester composition of the present invention comprises a biodegradable aliphatic polyester and a cyclic ester. The biodegradable aliphatic polyester comprises: a component A, i.e., a dicarboxylic acid compound, on the basis of the total molar weight of the component A, comprising a1: 65-95 mol% of succinic acid or a derivative of an ester of the succinic acid, or a mixture thereof, and a2: 5-35 mol% of adipic acid or a derivative of an ester of the adipic acid, or a mixture thereof; and a component B, i.e., 1,4-butanediol having a molar weight at least equal to that of the component A. The cyclic ester comprises compounds represented by formula (I) and formula (II), the content of the cyclic ester having the structures represented by formula (I) and formula (II) is 538-1100 ppm on the basis of the total weight of the biodegradable aliphatic polyester composition, and the TVOC content of the biodegradable aliphatic polyester composition is not greater than 157 ppm.

IPC Classes  ?

• C08G 63/20 - Polyesters having been prepared in the presence of compounds having one reactive group or more than two reactive groups
• C08G 63/78 - Preparation processes
• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08J 5/18 - Manufacture of films or sheets
• B65D 65/46 - Applications of disintegrable, dissolvable or edible materials

Abstract

The present invention belongs to the technical field of degradable materials, and provides a biodegradable aliphatic polyester composition, and a preparation method therefor and the use thereof. The biodegradable aliphatic polyester composition of the present invention comprises a biodegradable aliphatic polyester and a cyclic esterified substance. The biodegradable aliphatic polyester comprises: a component A, i.e. a dicarboxylic acid compound; and a component B, i.e. 1,4-butanediol, which having at least the equimolar amount of the component A. The cyclic esterified substance comprises compounds as shown in formula (I) and formula (II). The content of the cyclic esterified substance is 0.6-1.1 wt.% on the basis of the total weight of the biodegradable aliphatic polyester composition, and the mass ratio of the compounds as shown in formula (I) to formula (II) is 2-6 : 1. By controlling polymeric monomers of the biodegradable aliphatic polyester composition and rationally regulating and controlling the proportion of the compounds as shown in formula (I) and formula (II), the present invention greatly reduces the precipitation of the cyclic ester and effectively improves the heat-sealing strength.

IPC Classes  ?

• C08G 63/20 - Polyesters having been prepared in the presence of compounds having one reactive group or more than two reactive groups
• C08G 63/78 - Preparation processes
• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08L 67/04 - Polyesters derived from hydroxy carboxylic acids, e.g. lactones
• C08J 5/18 - Manufacture of films or sheets
• B65D 65/46 - Applications of disintegrable, dissolvable or edible materials

Abstract

The invention relates to a PC resin material with a neutral filtering effect, and a preparation method therefor and the use thereof. The PC resin material with a neutral filtering effect provided in the present invention comprises polycarbonate, an antioxidant, a dispersing agent and an additive. The PC resin material with a neutral filtering effect provided in embodiments of the present invention has a flat transmittance curve at a spectral band of 400-1000 nm, a better neutral filtering effect and the advantages of easy machinability and low costs, and can be widely applied to the preparation of optical products.

IPC Classes  ?

• C08K 3/22 - OxidesHydroxides of metals
• B29B 9/10 - Making granules by moulding the material, i.e. treating it in the molten state
• B29C 48/40 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws, e.g. twin screw extruders
• B29K 69/00 - Use of polycarbonates as moulding material
• B29K 505/10 - Copper
• B29L 11/00 - Optical elements, e.g. lenses, prisms
• C08K 5/101 - EstersEther-esters of monocarboxylic acids
• C08K 5/13 - PhenolsPhenolates
• C08K 5/521 - Esters of phosphoric acids, e.g. of H3PO4

Abstract

Disclosed is a furan diacid-based polyamide resin, which is derived from the following repeating units: (A) 2,5-furandicarboxylic acid, (B) 1,4-cyclohexanedicarboxylic acid, and (C) 1,10-decanediamine, where based on the total molar percentage of the diacid units, (A) accounts for 5-45 mol % of the diacid units.

IPC Classes  ?

• C08G 69/40 - Polyamides containing oxygen in the form of ether groups
• C08G 69/04 - Preparatory processes
• C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
• C08K 5/3492 - Triazines
• C08K 5/5313 - Phosphinic compounds, e.g. R2=P(:O)OR'
• C08K 7/14 - Glass

Abstract

The present invention provides a semi-aromatic polyamide molding composite material that can be used for producing an LED display screen light source reflection support. Generally, by selecting a semi-aromatic polyamide resin having a specific repeating unit, and enabling the crystallization peak width at half maximum ΔT1/2 to be 4-11° C., the whiteness to be less than 26.5, the reflectivity under a 460 nm light source to be less than 6% etc., the semi-aromatic polyamide molding composite material has the advantages of reduced blue light, high contrast ratio and high gray scale, and can meet requirements for the packaging process and long-term reliability. The package product can be used for manufacturing high-contrast LED display screen light source refection supports for use in multiple environments.

IPC Classes  ?

• C08K 3/34 - Silicon-containing compounds
• B29B 9/10 - Making granules by moulding the material, i.e. treating it in the molten state
• B29B 9/12 - Making granules characterised by structure or composition
• B29C 48/40 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws, e.g. twin screw extruders
• B29K 77/00 - Use of polyamides, e.g. polyesteramides, as moulding material
• B29K 507/04 - Carbon
• B29L 31/34 - Electrical apparatus, e.g. sparking plugs or parts thereof
• C08K 3/04 - Carbon
• C08K 5/13 - PhenolsPhenolates

Abstract

The present invention discloses a furan diacid-based polyamide, which is derived from the following repeating units: (A) 2,5-furandicarboxylic acid, (B) 1,4-cyclohexanedicarboxylic acid, and (C) 1,5-pentanediamine, where based on the total molar percentage of the diacid units, (A) accounts for 10-45 mol % of the diacid units. The furan diacid-based polyamide of the present invention has a melting point of 291-335° C.

IPC Classes  ?

• C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
• C08G 69/28 - Preparatory processes
• C08K 5/52 - Phosphorus bound to oxygen bound to oxygen only
• C08K 5/5313 - Phosphinic compounds, e.g. R2=P(:O)OR'
• C08K 7/14 - Glass

Abstract

An ABS rubber powder and a preparation method therefor, an ABS material and a vehicle interior trim part. The ABS rubber powder comprises a continuous phase and a dispersed phase dispersed in the continuous phase, wherein the continuous phase comprises an acrylonitrile-styrene copolymer, and the dispersed phase comprises polybutadiene, the polybutadiene comprising a first butadiene rubber and a second butadiene rubber. The average particle size of the first butadiene rubber is 250-350 nm, and the average particle size of the second butadiene rubber is 800-2000 nm; and the weight ratio of the first butadiene rubber to the second butadiene rubber is (40-50): (3-7). The ABS rubber powder has relatively good damping performance and a good long-acting anti-noise effect.

IPC Classes  ?

• C08F 279/04 - Vinyl aromatic monomers and nitriles as the only monomers
• C08L 55/02 - ABS [Acrylonitrile-Butadiene-Styrene] polymers
• C08F 212/08 - Styrene
• C08F 220/44 - Acrylonitrile

Abstract

The present invention belongs to the field of biodegradable polyesters, and particularly relates to a biodegradable polyester composition, and a preparation method therefor and the use thereof. The biodegradable polyester composition comprises the following components in percentages by weight: i, 75-100 wt% of a biodegradable copolyester, based on the total weight of components i-ii; ii, 0-25 wt% of polylactic acid, based on the total weight of components i-ii; iii, 15-30 wt% of acid-etchable inorganic rigid particles, based on the total weight of components i-iv; and iv, 1-15 wt% of non-acid-etchable inorganic rigid particles, based on the total weight of components i-iv, wherein the distribution of the mixed particle size of the acid-etchable inorganic rigid particles and the non-acid-etchable inorganic rigid particles satisfies: D90<12 μm, and D95=15-25 μm. A film prepared in the present invention has better mechanical properties and relatively low apparent density under the condition of similar apparent thickness.

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08L 67/04 - Polyesters derived from hydroxy carboxylic acids, e.g. lactones
• C08K 3/34 - Silicon-containing compounds
• C08K 3/26 - CarbonatesBicarbonates
• C08K 5/20 - Carboxylic acid amides

Abstract

Disclosed in the present invention is polybutadiene latex. The solid rubber in the polybutadiene latex contains 7-10 g/L of a vinyl structure, 18-30 g/L of a trans-1,4 butadiene structure, and 10-24 g/L of a cis-1,4 butadiene structure. The polybutadiene latex of the present invention has a low horizontal combustion speed. Further disclosed in the present invention are a preparation method for the polybutadiene latex and a use of the polybutadiene latex in ABS high rubber powder. The ABS resin obtained by blending the ABS high rubber powder has a low horizontal combustion speed.

IPC Classes  ?

• C08F 136/06 - Butadiene
• C08F 2/26 - Emulsion polymerisation with the aid of emulsifying agents anionic
• C08F 2/38 - Polymerisation using regulators, e.g. chain terminating agents
• C08L 55/02 - ABS [Acrylonitrile-Butadiene-Styrene] polymers

Abstract

The present invention relates to the field of engineering plastics, and particularly relates to a modified ABS plastic powder, a preparation method therefor, an ABS resin and an automotive interior part. The modified ABS plastic powder comprises a residual-monomer adsorbent and titanium dioxide modified by doping same with a transition metal element, the residual-monomer adsorbent comprising diatomite, a molecular sieve, porous silicate or a combination thereof. The residual-monomer adsorbent achieves physical adsorption on residual monomers in the modified ABS plastic powder; in addition, the titanium dioxide modified by doping same with a transition metal element can continuously decompose the residual monomers adsorbed by the residual-monomer adsorbent. Therefore, the modified ABS plastic powder in the embodiment has reduced contents of residual monomers, and has the properties of low odor and low diffusion.

IPC Classes  ?

• C08F 279/04 - Vinyl aromatic monomers and nitriles as the only monomers
• C08F 212/08 - Styrene
• C08F 220/44 - Acrylonitrile
• C08F 6/00 - Post-polymerisation treatments
• C08L 55/02 - ABS [Acrylonitrile-Butadiene-Styrene] polymers

Abstract

Disclosed in the present invention are a polypropylene composition, and a preparation method therefor and the use thereof. The polypropylene composition comprises the following components in parts by weight: 90-95 parts of polypropylene, 1-2 parts of hypophosphite, 0.5-2 parts of a brominated flame retardant, 0.2-0.5 parts of a flame retardant synergist, 0.1-0.4 parts of a main antioxidant, 0.1-0.4 parts of an auxiliary antioxidant, and 0.2-0.4 parts of a hindered amine light stabilizer other than an N-substituted alkoxy hindered amine, wherein the flame retardant synergist is one or more of N-substituted alkoxy hindered amines. The polypropylene composition provided in the present invention has the advantages of resistance to high-temperature failure, a long chalking time and low probability of discoloration during processing.

IPC Classes  ?

• C08L 23/12 - Polypropene
• C08L 79/04 - Polycondensates having nitrogen-containing heterocyclic rings in the main chainPolyhydrazidesPolyamide acids or similar polyimide precursors
• C08K 3/32 - Phosphorus-containing compounds
• C08K 5/3492 - Triazines
• C08K 5/375 - Sulfides containing six-membered aromatic rings
• C08K 5/524 - Esters of phosphorous acids, e.g. of H3PO3
• C08K 5/3435 - Piperidines

Abstract

The present invention relates to polybutadiene latex and a preparation method therefor, and ABS resin and a preparation method therefor. The average particle size of the polybutadiene latex is 290-315 nm, the half-peak width of a number-average particle size distribution curve is 20-150 nm, and the content of residual butadiene monomers in the polybutadiene latex accounts for 0.005-1.6% of the whole dry basis of the polybutadiene latex. The ABS resin comprises 15-40 parts of ABS high rubber powder and 60-78 parts of styrene-acrylonitrile copolymer. The ABS resin has good electroplating surface appearance and coating binding force.

IPC Classes  ?

• C08F 136/06 - Butadiene
• C08F 2/26 - Emulsion polymerisation with the aid of emulsifying agents anionic
• C08F 2/38 - Polymerisation using regulators, e.g. chain terminating agents
• C08F 279/04 - Vinyl aromatic monomers and nitriles as the only monomers
• C08F 212/10 - Styrene with nitriles
• C08F 220/44 - Acrylonitrile
• C08L 25/12 - Copolymers of styrene with unsaturated nitriles
• C08L 55/02 - ABS [Acrylonitrile-Butadiene-Styrene] polymers

Abstract

Provided in the present invention are a red phosphorus flame-retardant polyamide composite material, a preparation method therefor and the use thereof. The red phosphorus flame-retardant polyamide composite material comprises the following components in parts by weight: 13.9-70.89 parts of PA66, 4-8.45 parts of red phosphorus, 10-35 parts of a reinforcing material, 6-20 parts of a toughening agent and 0.1-1 part of a zirconium compound, the zirconium compound being at least one of metazirconic acid or zirconic anhydride. The red phosphorus flame-retardant polyamide composite material has the characteristics of low corrosivity, good toughness, red phosphorus being less prone to oxidation and high CTI value.

IPC Classes  ?

• C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
• C08L 51/06 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
• C08K 3/02 - Elements
• C08K 7/14 - Glass
• C08K 3/22 - OxidesHydroxides of metals
• C08K 3/24 - AcidsSalts thereof
• C08L 23/08 - Copolymers of ethene

Abstract

Disclosed in the present invention is a polyamide resin, which comprises the following repetitive units in percentages by mole: a diacid unit: 1,4-cyclohexanedicarboxylic acid; and diamine units: 1,10-decamethylene diamine and 1,12-dodecanediamine, wherein the amount-of-substance fraction of 1,10-decamethylene diamine in diamine is 76-82%. In the polyamide resin of the present invention, the amount-of-substance fraction of a trans-structure in the polyamide resin is 81-85%. In the present invention, by controlling the amount-of-substance fraction of each unit in polyamide, a specific trans-structure proportion can be obtained, which destroys the regularity of a molecular chain, such that the polyamide resin not only has relatively high initial light transmittance, but can also maintain relatively high light transmittance after an SMT treatment since same is free of the phenomenon of recrystallization after the SMT treatment.

IPC Classes  ?

• C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
• C08G 69/28 - Preparatory processes
• C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids

Abstract

The present application relates to a biodegradable polylactic-acid-based composite material, and a preparation method therefor and the use thereof. The biodegradable polylactic-acid-based composite material comprises the following components in parts by weight: 15-55 parts of polylactic acid, 30-70 parts of poly(butylene adipate-co-terephthalate), and 15-40 parts of a filler, wherein in the polylactic acid, the mass content of residual monomers is less than or equal to 0.3%; the poly(butylene adipate-co-terephthalate) has a structure as shown in formula (I): where p is in the range of 0.44-0.54, and p+q=1; and when the temperature is 25ºC, the intrinsic viscosity of the poly(butylene adipate-co-terephthalate) is 0.9-1.9 dL/g. The composite material has good rebound resilience, aging resistance and biodegradability, can be used for preparing a nose bridge strip having good rebound resilience, aging resistance and biodegradability, and has wide application prospects.

IPC Classes  ?

• C08L 67/04 - Polyesters derived from hydroxy carboxylic acids, e.g. lactones
• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08K 3/34 - Silicon-containing compounds
• C08K 3/26 - CarbonatesBicarbonates
• C08G 63/78 - Preparation processes
• C08G 63/183 - Terephthalic acids
• A41D 13/11 - Protective face masks, e.g. for surgical use, or for use in foul atmospheres

Abstract

Provided in the present application are a semi-aromatic polyamide composition, and a preparation method therefor and the use thereof. The semi-aromatic polyamide composition comprises the following components in percentages by mass: 49%-61.7% of a semi-aromatic polyamide, 35%-45% of carbon fibers, 3%-5% of an aliphatic polyamide and 0.3%-1% of a dye, wherein the semi-aromatic polyamide is a mixture of PA6T/6I and PAMXD6 or PA6T/6I; in PA6T/6I, the molar ratio of 6T to 6I is (68-72):(28-32); in the mixture of PA6T/6I and PAMXD6, the mass ratio of PA6T/6I to PAMXD6 is (70-92):(8-30); and the monofilament diameter of the carbon fibers is 5-7 µm, and the elastic modulus e of the carbon fibers satisfies: 240GPa≤e≤380GPa.

IPC Classes  ?

• C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
• C08K 7/06 - Elements

Abstract

The present invention relates to a heat-oxidative aging-resistant polyethylene material and a preparation method thereof. The components of the polyethylene material comprise, based on weight parts: 80-95 parts of polyethylene; 2-10 parts of a compatibilizer; 0.2-2 parts of a composite antioxidant; the composite antioxidant comprises: an antioxidant, a metal passivator, and a grafted epoxy resin in a weight ratio of (1.5-3.2):(0.1-0.3):(0.1-0.3). The polyethylene material has good heat-oxidative aging resistance and good initial mechanical properties.

IPC Classes  ?

• C08L 23/06 - Polyethene
• C08L 51/08 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• C08K 5/134 - Phenols containing ester groups
• C08K 5/526 - Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds
• C08K 5/372 - Sulfides
• C08K 5/25 - Carboxylic acid hydrazides

Abstract

The present invention relates to the technical field of polymer materials. Disclosed are a polycarbonate composition, and a preparation method therefor and a use thereof. The polycarbonate composition comprises the following components in parts by weight: 100 parts of polycarbonate; 8-40 parts of glass fiber; 0.1-1 part of a maleic anhydride grafted polymer; and 0-5 parts of a processing aid, wherein the sulfur content of the glass fiber in the polycarbonate composition is less than or equal to 500 ppm. According to the present invention, by controlling the sulfur content of the glass fiber, a significant decrease in the flexural modulus of the polycarbonate composition is avoided, and the cantilever notched impact strength retention rate of the polycarbonate composition in a 1000 h hygrothermal aging test at the temperature of 85°C and humidity of 85% is effectively improved, so that the material has high rigidity and high hygrothermal aging stability.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• C08L 51/00 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers
• C08K 9/00 - Use of pretreated ingredients
• C08K 7/14 - Glass
• C08J 5/08 - Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials glass fibres

Abstract

A polyamide resin, in terms of molar percentage, is derived from the following units: a diacid unit: terephthalic acid and straight-chain diacid, where the molar fraction of terephthalic acid in the diacid unit is 2-10%; and a diamine unit: 1,10-decanediamine and/or 1,12-dodecanediamine; the straight-chain diacid is selected from at least one of 1,11-undecanedioic acid, 1,12-dodecanedioic acid, 1,13-tridecanedioic acid and 1,14-tetradecanedioic acid. Disclosed in the present invention is a polyamide resin with a melting point within the range 180-190°C, having the advantages of low crystallization performance, high uniformity of extruded pipes, and good glossiness, and is suitable for new energy vehicle pipeline systems.

IPC Classes  ?

• C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
• C08G 69/28 - Preparatory processes
• C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids

Abstract

Disclosed in the present invention is a polyamide resin, comprising the following repeating units in molar percentage: a diacid unit: 1,4-cyclohexanedicarboxylic acid; and a diamine unit: 1,10-decanediamine and 1,12-dodecanediamine, wherein the mass fraction of 1,10-decanediamine in the diamine is 66-75%. The polyamide resin disclosed in the present invention is composed of specific repeating units, so that the trans-structure of the polyamide resin accounts for 77-81%; the resin has a strong silica gel binding force and maintains a low water absorption rate, and the present invention is suitable for the field of outdoor LED display screens.

IPC Classes  ?

• C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
• C08G 69/28 - Preparatory processes
• C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids

Abstract

12344-CO-. According to the present invention, the LCP resin is blended with a trace amount of fully aromatic polyfunctional oligomer to form a micro-branched or micro-crosslinked structure, a skin core structure of the LCP resin is improved, and the chain segment regularity of the LCP resin is destroyed, thereby improving the warping performance of the LCP resin composition, and adjusting the bending modulus of the LCP resin composition.

IPC Classes  ?

• C08L 67/00 - Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chainCompositions of derivatives of such polymers
• C08K 7/14 - Glass
• C08K 5/12 - EstersEther-esters of cyclic polycarboxylic acids
• C08K 3/34 - Silicon-containing compounds

Abstract

Disclosed in the present invention is a polyester composition, which comprises the following components in parts by weight: 50-80 parts of PCT resin, 8-40 parts of a filler and 0.01-0.1 part of a light diffusion agent, the filler being at least one selected from flat glass fibers, round glass fibers and glass flakes. Primarily by means of addition of the specific light diffusion agent, the present invention remarkably improves the reflectivity of light and enables a certain light transmittance (the range of the light transmittance being 53%-75% and the range of the reflectivity being 44%-64%), thereby increasing the angle of reflection. In addition, selecting the specific polyester resin can achieve the advantage of high-temperature resistance. The polyester composition is suitable for preparing SMD-type LED reflection supports.

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08K 7/14 - Glass
• C08K 7/00 - Use of ingredients characterised by shape
• C08K 3/40 - Glass
• C08K 5/353 - Five-membered rings
• C08K 5/45 - Heterocyclic compounds having sulfur in the ring

Abstract

161234566 in formula (II) contains a -C(O)-Ar-C(O)- chain link, Ar representing an aromatic ring. The cross-linked liquid crystal polymer has the advantages of high modulus and high-temperature resistance, and can also maintain good flexibility and film-forming properties, such that a vibrating diaphragm material can be prepared therefrom by means of vibrating diaphragm formation.

IPC Classes  ?

• C08J 3/24 - Crosslinking, e.g. vulcanising, of macromolecules
• C08G 63/60 - Polyesters derived from hydroxy carboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from the reaction of a mixture of hydroxy carboxylic acids, polycarboxylic acids and polyhydroxy compounds
• C08G 63/20 - Polyesters having been prepared in the presence of compounds having one reactive group or more than two reactive groups
• C08G 63/133 - Hydroxy compounds containing aromatic rings
• C08L 67/00 - Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chainCompositions of derivatives of such polymers
• C08L 67/03 - Polyesters derived from dicarboxylic acids and dihydroxy compounds the dicarboxylic acids and dihydroxy compounds having the hydroxy and the carboxyl groups directly linked to aromatic rings

Abstract

The present invention relates to an ultra-breathable polyolefin film material and a preparation method therefor. The material comprises: polyethylene resin, micron-scale surface-modified heavy calcium carbonate, a dispersing agent, and an antioxidant. By prioritizing the particle size distribution of the micron-scale surface-modified heavy calcium carbonate and adding high-density polyethylene, the present invention prepares an ultra-breathable polyolefin film material having a good appearance, with a Wang Yan air permeability of less than 100s, and a film surface without defects such as crystal points and pinholes; moreover, the micron-scale surface-modified heavy calcium carbonate can increase an interface stripping pore-forming number and average pore diameter during stretching of the breathable polyolefin film material, thereby increasing the air permeability of the breathable polyolefin film material.

IPC Classes  ?

• C08L 23/06 - Polyethene
• C08K 9/04 - Ingredients treated with organic substances
• C08J 5/18 - Manufacture of films or sheets

Abstract

Disclosed in the present invention are a polyamide composite material, a preparation method therefor and the use thereof. The polyamide composite material comprises the following components in parts by weight: 35-80 parts of PA66 or PA6; 5-30 parts of spherical boron nitride; and 5-30 parts of needle-like boron nitride. The present invention can improve the heat conductivity of the polyamide composite material while ensuring good mechanical properties thereof.

IPC Classes  ?

• C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
• C08L 77/02 - Polyamides derived from omega-amino carboxylic acids or from lactams thereof
• C08K 7/18 - Solid spheres inorganic
• C08K 7/04 - Fibres or whiskers inorganic

Abstract

The present invention relates to a semi-aromatic polyether ester, a preparation method therefor and use thereof. The semi-aromatic polyether ester includes repeating units derived from the following components: a first component A, based on the total molar amount of the first component A, including: a1) 35-65 mol %, and preferably 40-60 mol % of at least one aliphatic dicarboxylic acid or an ester derivative thereof, or an anhydride derivative thereof, and a2) 35-65 mol %, and preferably 40-60 mol % of at least one aromatic dicarboxylic acid or an ester derivative thereof, or an anhydride derivative thereof; a second component B: 1,4-butanediol; and a third component C: poly(1,4-butanediol) having a molecular formula of HO—(CH2CH2CH2CH2—O)n—H, where n is an integer from 2 to 200; based on the total molar weight of the first component A, the molar content of the repeating unit-CH2CH2CH2CH2—O— in the third component C is 1.5-5.5 mol %

IPC Classes  ?

• C08G 63/672 - Dicarboxylic acids and dihydroxy compounds
• C08G 63/78 - Preparation processes

Abstract

The present invention relates to a cleaning production line for plastic products, comprising a cleaning device, and a visual recognition mechanism and a sorting device which are located at a discharging end of the cleaning device. The cleaning device comprises a double side cleaning assembly, the double side cleaning assembly being used for cleaning two opposite surfaces of plastic products. The sorting device comprises an outflow channel and a screening mechanism used for enabling the plastic products to leave the outflow channel. The visual recognition mechanism comprises an image acquisition component used for shooting pictures of plastic products and a picture recognition unit electrically connected to the image acquisition component. The present invention further relates to a cleaning method based on the production line. The present invention cleans the two surfaces of plastic products, then automatically recognizes heavily-polluted plastic products by means of visual recognition, screens out a small number of heavily-polluted plastic products, and then soaks and cleans the plastic products having relatively low degrees of pollution. Thus, the feeding amount of chemical agents in a cleaning liquid can be reduced, thereby avoiding over-cleaning of plastic products, reducing resource waste and reducing emission of chemicals.

IPC Classes  ?

• B08B 3/04 - Cleaning involving contact with liquid
• B07C 5/34 - Sorting according to other particular properties
• B08B 1/00 - Cleaning by methods involving the use of tools
• B08B 3/08 - Cleaning involving contact with liquid the liquid having chemical or dissolving effect
• B08B 3/10 - Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration

Abstract

The present invention relates to the technical field of high polymer materials. Disclosed in the present invention are a melt-blown polypropylene composite material, and a preparation method therefor and the use thereof. Provided in the present invention is a melt-blown polypropylene composite material, which comprises the following components in parts by weight: 80-93 parts of a polypropylene melt-blowing material, 3-12 parts of aliphatic polyamide, 1-5 parts of zirconium phosphate, and 3-5 parts of an electret masterbatch. In the present invention, aliphatic polyamide and zirconium phosphate are introduced into a polypropylene melt-blowing material, and the crystallization capacity of the material is improved by means of the action of hydrogen bonds in the aliphatic polyamide, such that the electrostatic electret performance of the material is improved. Zirconium phosphate has a layered structure, and can absorb free nitroxyl radicals generated by an oxidation-reduction reaction of a hindered amine in the system, such that the reaction of the free nitroxyl radicals with a phenolic antioxidant is slowed down, and reddening and yellowing of the material are effectively weakened.

IPC Classes  ?

• C08L 23/12 - Polypropene
• D04H 1/544 - Olefin series
• B01D 39/16 - Other self-supporting filtering material of organic material, e.g. synthetic fibres
• C08L 77/02 - Polyamides derived from omega-amino carboxylic acids or from lactams thereof
• C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
• C08K 5/098 - Metal salts of carboxylic acids

Abstract

m2m1m1m2m2 of the liquid crystal polymer fibers is greater than or equal to 30ºC; the strength of the liquid crystal polymer fibers is greater than or equal to 5 cN/dtex; and the density of the hollow glass beads is less than or equal to 0.6 g/cm3. The liquid crystal polymer composition has a heat conductivity coefficient of 0.3 W/M/K or less and a tensile strength of greater than 50 MPa, and meets the use requirements of a scenario where high strength and low heat conductivity of a component are required.

IPC Classes  ?

• C08L 101/12 - Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity
• C08J 5/04 - Reinforcing macromolecular compounds with loose or coherent fibrous material
• C08K 7/28 - Glass

Abstract

The present invention provides a liquid crystal polyester and a preparation method therefor and a use thereof. According to the present invention, a 2,6-naphthalene structure having a "side step effect" and a 4,4-diphenyl ether having a bending structure are introduced at the same time, a biphenyl structure easy to rotate is replaced with a p-phenylene structure (i.e., a 1,4-phenylene-containing structure) that is easily extracted by sublimation, and the 2,6-naphthalene structure, the 4,4-diphenyl ether, and the p-phenylene structure cooperate with each other, so that on one hand, the energy barrier of chain segmental motion at a high temperature can be increased, the motion of a molecular chain end at a lead-free reflow soldering temperature is reduced, chain-end transesterification is inhibited, and generation of vaporized small molecules is jointly reduced, thereby avoiding blistering; and on the other hand, the 2,6-naphthalene structure and the 4,4-diphenyl ether can also have the effect of reducing the melting point and the crystallization temperature of the liquid crystal polyester. The liquid crystal polyester prepared by the present invention has good blistering resistance stability, has an average blistering rate of as low as 10% or below, has a melting point of 360°C or below, and has a weight loss rate of 0.3% or below under the conditions of 300°C and 60 min.

IPC Classes  ?

• C08G 63/60 - Polyesters derived from hydroxy carboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from the reaction of a mixture of hydroxy carboxylic acids, polycarboxylic acids and polyhydroxy compounds
• C08G 63/78 - Preparation processes
• C09K 19/38 - Polymers, e.g. polyamides

Abstract

Disclosed in the present invention are a polyester composition, and a preparation method therefor and a use thereof. The polyester composition of the present invention comprises the following components in parts by weight: A) 30-90 parts by weight of a PCT resin; B) 10-60 parts by weight of titanium dioxide; C) 0-5 parts by weight of an auxiliary agent; and D) a phosphorus-containing inorganic substance and a sulfur-containing organic substance, wherein the mass ratio of a titanium element in component B to component D is (5.8-70):1, and the mass ratio of a phosphorus element to a sulfur element in the component D is (20-140):1. According to the polyester composition of the present invention, by combining the titanium dioxide, the phosphorus-containing inorganic substance and the sulfur-containing organic substance, using the color and ultraviolet aging resistance effect of the titanium dioxide, using the phosphorus-containing inorganic substance and the sulfur-containing organic substance in combination, and regulating the mixture ratio between the titanium element content and the component D, a polyester composition having excellent mechanical properties and high retention rates of initial color and color after high-temperature baking is obtained.

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08K 3/32 - Phosphorus-containing compounds
• C08K 5/372 - Sulfides
• C08K 7/14 - Glass
• C08K 3/22 - OxidesHydroxides of metals
• G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
• H01L 33/60 - Reflective elements
• H01L 33/56 - Materials, e.g. epoxy or silicone resin

Abstract

The present invention provides a liquid crystal polymer, LCP fibers, and a preparation method therefor and the use thereof, and belongs to the technical field of polymer materials. The monomer unit of the liquid crystal polymer of the present invention comprises -NH- and -O- groups, and the molar content of the monomer unit containing -NH- is 1-15%. In the preparation method for LCP fibers of the present invention, the liquid crystal polymer is taken as a raw material, an alkyl phosphate salt aqueous solution is sprayed during the spinning process, the alkyl phosphate salt reacts with an amide group of the liquid crystal polymer to form an hydrogen bond, such that the alkyl phosphate salt and the LCP fibers are tightly combined, greatly improving the surface polarity of the LCP fibers, thereby improving the binding force between the LCP fibers and other resins.

IPC Classes  ?

• C08G 63/685 - Polyesters containing atoms other than carbon, hydrogen, and oxygen containing nitrogen
• C08G 63/78 - Preparation processes
• D01F 6/84 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from copolycondensation products from copolyesters
• D01F 11/08 - Chemical after-treatment of man-made filaments or the like during manufacture of synthetic polymers of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• D06M 13/292 - Mono-, di- or triesters of phosphoric or phosphorous acidsSalts thereof
• C08K 5/521 - Esters of phosphoric acids, e.g. of H3PO4
• C09K 19/38 - Polymers, e.g. polyamides

Abstract

Disclosed are a polypropylene composite material capable of blasting at a low temperature, and a preparation method therefor and application thereof. The polypropylene composite material comprises the following components in parts by weight: 35-75 parts of special polypropylene A, 3-10 parts of special polypropylene B, 15-30 parts of a filler, 2-10 parts of a special toughening agent, 15-25 parts of a toughening agent, 0.1-0.3 part of a lubricant, 0.1-0.3 part of a photostabilizer, and 0.2-0.6 part of an antioxidant, wherein the special toughening agent comprises ultrahigh molecular weight polyethylene and a metallocene ethylene-propylene copolymer. The polypropylene composite material that is capable of blasting at a low temperature and has good rigidity is prepared by using the special polypropylene A, the special polypropylene B, and the special toughening agent in combination with the normal filler and the normal toughening agent, and the polypropylene composite material has a wide application prospect.

IPC Classes  ?

• C08L 53/00 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers
• B29C 48/04 - Particle-shaped
• B29C 48/84 - Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders by heating or cooling the feeding screws
• B29C 70/58 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only
• B29K 23/00 - Use of polyalkenes as moulding material
• B29K 507/00 - Use of elements other than metals as filler
• B29L 31/30 - Vehicles, e.g. ships or aircraft, or body parts thereof
• C08K 3/30 - Sulfur-, selenium-, or tellurium-containing compounds
• C08K 3/34 - Silicon-containing compounds
• C08K 5/098 - Metal salts of carboxylic acids
• C08K 5/13 - PhenolsPhenolates
• C08K 5/17 - AminesQuaternary ammonium compounds
• C08K 5/524 - Esters of phosphorous acids, e.g. of H3PO3
• C08K 7/08 - Oxygen-containing compounds
• C08L 23/08 - Copolymers of ethene

Abstract

Disclosed in the present invention are a colorful weather-resistant polypropylene composition and a preparation method therefor, which belong to the field of plastics. In the technical solution of the present invention, starting from an organic pigment per se in the components, a new composite coloring agent is obtained by wrapping the organic pigment with a modified resin of a specific proportion and a specific variety, and is then used for preparing the colorful weather-resistant polypropylene composition, such that not only the light stability of the organic pigment per se is effectively improved, but also a polypropylene matrix resin can be isolated to reduce the action between same and the organic pigment. The whole product can exhibit good weather resistance without specially adding extra ultraviolet light absorbers, light stabilizers, etc., such that the production cost is significantly reduced without weakening the basic mechanical properties of the product. Further disclosed in the present invention are a preparation method for the colorful weather-resistant polypropylene composition and the use thereof in the preparation of automobiles, electric tools or electrical products.

IPC Classes  ?

• C08K 5/3447 - Five-membered rings condensed with carbocyclic rings
• C08K 5/42 - Sulfonic acidsDerivatives thereof
• C08K 5/00 - Use of organic ingredients
• C08K 5/3415 - Five-membered rings
• C08K 5/3462 - Six-membered rings
• C08K 5/23 - Azo-compounds
• C08K 9/10 - Encapsulated ingredients
• C08L 23/12 - Polypropene

Abstract

The present invention relates to the technical field of waste plastic recycling, and in particular to a composite treatment process and composite treatment system for waste plastic bottles. The composite treatment process comprises the steps of conveying waste plastic bottles and adjusting same to be upright, drafting, feeding, slitting, screening waste and plastic strips, cleaning the plastic strips and preliminarily removing water from the plastic strips, and dewatering and drying the plastic strips. According to the present invention, by means of the physical properties of cut products of bottle caps, bottle collars, and bottle bodies, the cut products of the bottle caps and the bottle collars are separated out to obtain bottle body plastic strips, so that the step of removing label stickiness by heating and boiling and the step of removing cap impurities by floating and filtering are omitted, thereby reducing energy consumption and reducing wastewater. Compared with the prior art that crushing is performed to obtain plastic sheets and then material screening is performed on the plastic sheets, causing high sorting difficulty and low sorting precision due to the small size of the plastic sheets, the present invention can achieve obtaining of bottle body plastic strips having higher purity, thereby facilitating broadening the application range of recycled plastics.

IPC Classes  ?

• B29B 17/02 - Separating plastics from other materials
• B29B 17/04 - Disintegrating plastics
• B29B 17/00 - Recovery of plastics or other constituents of waste material containing plastics

Abstract

Provided in the present invention is a directional regular strip-cutting apparatus for plastic bottles. The directional regular strip-cutting apparatus comprises a differential shaping roller assembly, an extrusion feeding roller assembly and a cutting roller assembly, which are arranged in the advancing direction of the plastic bottles in sequence, and further comprises a discharging hopper arranged between a third passing gap and the cutting roller assembly. The discharging hopper has a larger opening and a smaller outlet; and the maximum width of the outlet of the discharging hopper is smaller than the length of the bottle body of each plastic bottle. The directional regular strip-cutting apparatus further comprises a first driving device, a second driving device, a third driving device and a fourth driving device, which are connected to a first driving roller, a second driving roller, a third driving roller and a drum knife roller respectively. The directional regular strip-cutting apparatus in the present invention solves problems of poor strip cutting effects during strip cutting of existing plastic bottles such as plastic strips being severely folded, many plastic flakes being produced and strip shapes being irregular. In the directional regular strip-cutting apparatus in the present invention, discarded plastic bottles are fully unfolded and flattened and subjected to longitudinal directional and regular strip cutting, and the plastic strips may maintain a width of 2-3 centimeters and have regular shapes, thereby conveniently screening and removing subsequent impurities and enhancing the overall recovery efficiency.

IPC Classes  ?

• B29B 17/00 - Recovery of plastics or other constituents of waste material containing plastics
• B29B 17/02 - Separating plastics from other materials
• B29B 17/04 - Disintegrating plastics
• B26D 7/00 - Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
• B29B 7/00 - MixingKneading
• B26D 7/27 - Means for performing other operations combined with cutting

Abstract

The present invention provides a polypropylene composite material, and a preparation method therefor and a use thereof. The polypropylene material of the present invention comprises the following components in parts by weight: 88-95 parts of polypropylene, 2-5 parts of a resin fiber, 1-3 parts of a glass fiber, 2-5 parts of a compatilizer, 0.1-0.4 parts of a α-nucleating agent, and 0-1 part of other additives, wherein the resin fiber is a polyamide fiber, and the retention length of the polyamide fiber in the polypropylene composite material is greater than or equal to 0.4 mm. In the present invention, low-flow polypropylene is used, and the α-nucleating agent is added to improve the crystallinity of the material, form a stable α crystal form, increase the tensile strength of the material, and improve the damage resistance; the glass fiber and the resin fiber are also added for reinforcement, and under the combined action of the two fibers, polypropylene can have high strength, toughness and shrinkage at the same time, the physical properties are comparable to those of polyformaldehyde, and the cost is low.

IPC Classes  ?

• C08L 23/12 - Polypropene
• C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
• C08L 77/02 - Polyamides derived from omega-amino carboxylic acids or from lactams thereof
• C08L 51/06 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
• C08K 7/14 - Glass
• C08K 5/523 - Esters of phosphoric acids, e.g. of H3PO4 with hydroxyaryl compounds

Abstract

Disclosed in the present invention are a polycarbonate alloy material with good color stability, and a preparation method therefor and the use thereof. The polycarbonate alloy material with good color stability comprises the following components in parts by weight: 50-90 parts of a polycarbonate, 1-20 parts of an acrylonitrile-butadiene-styrene copolymer, 5-20 parts of a flame retardant, 1-25 parts of a toughening agent, 0.1-2 parts of a stabilizer and 0.1-5 parts of an anti-dripping agent. The polycarbonate alloy material not only has good thin-wall flame retardance, but also has a relatively high tensile strength and tensile strength retention rate after long-term thermo-oxidative aging; the browning problem is significantly improved; and the use scenarios are wide.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• C08L 55/02 - ABS [Acrylonitrile-Butadiene-Styrene] polymers
• C08L 25/12 - Copolymers of styrene with unsaturated nitriles

Abstract

A cross-linked PBT composition, comprising the following components in parts by weight: 100 parts of PBT resin; 0-100 parts of glass fiber. The PBT resin and pentaerythritol and/or a derivative thereof form a cross-linked structure and a branched end group. The PBT resin of the cross-linked structure accounts for 0.5-4 wt% of the total weight of the PBT resin; and the terminal carboxyl group content of the PBT resin is less than or equal to 15 mol/t. The cross-linked PBT composition disclosed by the invention forms, by means of pentaerythritol and/or a derivative thereof, a cross-linked structure having a specific content with the PBT resin, and a branched end group is formed, so that the content of the terminal carboxyl group is reduced. The cross-linked PBT composition in the invention has relatively low crystallization temperature, and has higher mechanical properties.

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08K 5/053 - Polyhydroxylic alcohols
• C08K 5/06 - EthersAcetalsKetalsOrtho-esters
• C08K 5/103 - EstersEther-esters of monocarboxylic acids with polyalcohols
• C08K 7/14 - Glass

Abstract

Disclosed is a PBT resin. The PBT resin contains an end group of an amide urea group structure, the end group content of the amide urea group structure is 0.5-10 mol/t, and the terminal carboxyl group content is less than or equal to 20 mol/t。 In the present invention, the PBT resin is capped by a capping agent containing carbodiimide functional group, and the content of the terminal carboxyl group is less than or equal to 20 mol/t, such that a PBT having a part of beta-crystal proportion can be obtained, and the PBT has excellent mechanical properties.

IPC Classes  ?

• C08G 63/91 - Polymers modified by chemical after-treatment
• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds

Abstract

A cleaning apparatus for plastic product recycling, comprising an abrasive cleaning tank (1), a conveying device (2), cleaning boxes (3) and an abrasive supply device (4). The conveying device (2) is used for inputting each cleaning box (3) into the abrasive cleaning tank (1) and outputting the cleaning box (3) to the outside of the abrasive cleaning tank (1); first impact assemblies (5) are mounted in the abrasive cleaning tank (1); each first impact assembly (5) comprises an ascending impact member (501), a first driving unit (502) for driving the ascending impact member (501) to ascend and descend, a descending impact member (503), and a second driving unit (504) for driving the descending impact member (503) to ascend and descend; the cleaning box (3) passes between the ascending impact member (501) and the descending impact member (503); the bottom of the cleaning box (3) is provided with through holes (301) allowing for the passage of the ascending impact member (501); and the abrasive supply device (4) is used for conveying abrasives into the cleaning boxes (3). Plastic products and abrasives are sequentially placed in the cleaning boxes (3), the cleaning boxes (3) are impacted by the first impact assemblies (5) to loosen dirt, after the dirt is loosened, the dirt is taken away under the action of a huge friction force generated by an impact force in combination with the abrasives, and efficient and high-quality cleaning of the plastic products is achieved by first loosing dirt and then generating a large friction force.

IPC Classes  ?

• B29B 17/00 - Recovery of plastics or other constituents of waste material containing plastics

Abstract

Disclosed in the present invention is a polypropylene composition with high fuel steam barrier property. The polypropylene composition comprises the following components in parts by weight: 60-80 parts of a polypropylene resin, 5-11 parts of a polyethylene resin, 5-15 parts of nylon, 5-15 parts of a compatilizer, 5-20 parts of montmorillonite, 5-15 parts of glass fibers, and 3-10 parts of a heat stabilizer, wherein the monofilament diameter of the glass fibers is 10-13 μm. The present invention can have a good fuel steam barrier property, while satisfying the strength of a carbon tank body, and has a high fuel steam barrier property and a relatively low material cost.

IPC Classes  ?

• C08L 23/12 - Polypropene
• C08L 23/14 - Copolymers of propene
• C08L 23/08 - Copolymers of ethene
• C08L 77/02 - Polyamides derived from omega-amino carboxylic acids or from lactams thereof
• C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
• C08K 9/00 - Use of pretreated ingredients
• C08K 3/34 - Silicon-containing compounds
• C08K 7/14 - Glass

Abstract

Disclosed in the present invention are a polymethyl methacrylate alloy, comprising the following components in parts by weight: 50-85 parts of polymethyl methacrylate; 15-40 parts of an acrylonitrile-acrylate-styrene copolymer; 0.5-4 parts of a light absorbent; 0.1-2 parts of an antioxidant; 0.1-2 parts of a weather resistant agent; and 0.1-2 parts of toner. The polymethyl methacrylate alloy provided by the present invention has the characteristics of good appearance, uniform light absorption and good toughness, and can be used for manufacturing decorative parts having a high-glossy black spraying-free appearance and capable of absorbing lights of specific wavelengths.

IPC Classes  ?

• C08L 33/12 - Homopolymers or copolymers of methyl methacrylate
• C08L 51/04 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to rubbers
• C08K 3/04 - Carbon

Abstract

Disclosed is a thin-walled flame-retardant PBT composition having high toughness and high fluidity. The thin-walled flame-retardant PBT composition comprises the following components calculated in parts by weight: 55-70 parts of medium viscosity polybutylene terephthalate, 5-20 parts of high viscosity polybutylene terephthalate, and 3-8 parts of a toughener; 12-20 parts of a flame retardant; 3-5 parts of a flame-retardant synergist; 1-2 parts of a lubricant; and 0.1-1 part of other additives. The toughener is a glycidyl methacrylate toughener, and the mass fraction of glycidyl methacrylate is not less than 6%. In the present invention, polybutylene terephthalate having two viscosities is used for compounding, and the toughener containing a specific glycidyl methacrylate content is added to prepare the thin-walled flame-retardant PBT composition, which has a melt flow rate of 10.8-20.9 g/10 min, an unnotched impact strength of no less than 109 kJ/m2, and a number of strikes without notches of no less than 3 times, meets a V-0 flame retardancy of 0.8 mm, and has good overall performance.

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds

Abstract

The present invention relates to a polycarbonate alloy composition with stable thermo-oxidative aging performance, a preparation method therefor and a use thereof. The polycarbonate alloy composition with stable thermo-oxidative aging performance comprises the following components in parts by weight: 10-99.9 parts of polycarbonate, 1-20 parts of a styrene-acrylonitrile copolymer compound, 5-20 parts of a flame retardant, 1-25 parts of a toughener, 0.1-2 parts of a stabilizer, and 0.1-5 parts of an anti-dripping agent. The styrene-acrylonitrile copolymer compound is composed of a styrene-acrylonitrile copolymer and a maleic anhydride grafted styrene-acrylonitrile copolymer in a mass ratio of (2-8):1. The polycarbonate alloy composition not only has good thin-wall flame retardance and toughness, but also has good long-term thermo-oxidative aging stability, and thus can be widely applied to an application scenario with higher service safety requirements.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
• C08L 25/12 - Copolymers of styrene with unsaturated nitriles

Abstract

Disclosed is a low-crystallization-temperature PBT composite material, comprising the following components in parts by weight: 50-100 parts of PBT resin; 5-50 parts of glass fiber; the content of montanic acid wax is 0.5-2 wt % of the weight parts of the PBT resin; the dropping point of the montanic acid wax is 80-90 °C, the melting point is 75-80 °C, and the acid value is less than or equal to 30 mgKOH/g. In the invention, a montanic acid wax having specific parameters is selected, so that the crystallization temperature of the PBT composite material can be significantly reduced, and the PBT composite material has excellent mechanical properties.

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08L 91/06 - Waxes
• C08K 7/14 - Glass

Abstract

Disclosed is a PBT composite material, comprising the following components in parts by weight: 100 parts of PBT resin; 0-100 parts of glass fiber; 0.5-10 parts of ethylene-butyl acrylate-glycidyl methacrylate copolymer; 0.5-2 parts of dipentaerythritol; wherein the weight ratio of the ethylene-butyl acrylate-glycidyl methacrylate copolymer to the dipentaerythritol is (10-1): 1. In the present invention, a specific amount of dipentaerythritol is added to the PBT composite material, so that the dipentaerythritol can react with a small-molecule PBT chain segment generated by degradation of the PBT resin in the melt shearing process to form a cross-linked structure, and thus the crystallization rate of PBT is regulated and controlled; the ethylene-butyl acrylate-glycidyl methacrylate copolymer can react with the terminal carboxyl group of the PBT, so as to have the effect of a capping reagent and reduce the nucleation effect of the terminal carboxyl group, thereby further reducing the crystallization temperature, and improving the mechanical properties.

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08L 23/08 - Copolymers of ethene
• C08K 7/14 - Glass
• C08K 5/06 - EthersAcetalsKetalsOrtho-esters
• C08L 67/00 - Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chainCompositions of derivatives of such polymers

Abstract

A method for identifying a recycled polypropylene material. A preset polypropylene database is used to compare each type of sample feature data with spectrum data in the polypropylene database, and feature spectrum data corresponding to each type of sample feature data is determined, so as to perform digital conversion on the sample feature data such that feature expression of different unknown types of samples conforming to model input is completed, and the requirements of analyzing the unknown types of samples by using different sample analysis means are satisfied; and finally, according to various feature spectrum data, a preset polypropylene identification model is used to identify a polypropylene sample under test, so as to determine the recycled material condition of the polypropylene sample under test. Therefore, an objective weight obtained by training by using a decision tree algorithm is used to comprehensively analyze the various feature spectrum data, such that the problem that the artificial subjective weight cannot be adapted to identification of unknown types of samples is effectively avoided, and the accuracy of an identification result is improved.

IPC Classes  ?

• G01N 33/44 - ResinsPlasticsRubberLeather
• G01N 30/88 - Integrated analysis systems specially adapted therefor, not covered by a single one of groups
• G01N 21/73 - Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited using plasma burners or torches
• G01N 25/20 - Investigating or analysing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
• G01N 21/33 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
• G01N 21/3563 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing solidsPreparation of samples therefor
• G06F 18/2135 - Feature extraction, e.g. by transforming the feature spaceSummarisationMappings, e.g. subspace methods based on approximation criteria, e.g. principal component analysis