The present invention relates to a flame-retardant polycarbonate (PC) material, and a preparation method therefor and a use thereof. The flame-retardant PC material comprises the following components in parts by weight: 65-85 parts of a PC resin, 29-96 parts of a PC-siloxane copolymer resin, 1-16 parts of an MDQ silicone resin, and 1-15 parts of a phosphorus-based flame retardant. In the present invention, the PC-siloxane copolymer resin, the MDQ silicone resin, and the phosphorus-based flame retardant are added, and the obtained flame-retardant PC material can reach a V0 flame retardant grade in the absence of fluorine, and has a good yield elongation after photo-aging, and a good ultrasonic welding strength.
The present invention relates to the field of halogen-free organophosphorus flame-retardant nylon, and in particular to a nylon composite material, and a preparation method therefor and a use thereof. Specifically, the nylon composite material disclosed in the present invention comprises: 65-82 parts of polyamide resin, 12-18 parts of a hypophosphite flame retardant, 10-50 parts of a reinforcing agent, 0.5-2 parts of hydrotalcite, 3-8 parts of boehmite, and 1-3 parts of PET resin. The present invention solves the problem of corrosion of organophosphorus flame-retardant nylon materials to silicone under high-temperature conditions, and provides an organophosphorus flame-retardant nylon composite material resistant to silicone corrosion under high-temperature conditions, having a high CTI value and meeting the UL94 V0 flame retardant rating.
A flame-retardant polypropylene and a preparation method therefor, belonging to the technical field of polymer materials. The product comprises the following components in parts by weight: 58-79 parts of a polypropylene resin, 18-33 parts of a halogen-free flame retardant, 3-8 parts of a dispersant, 0.1-1.5 parts of a char-forming catalyst, and 0.1-0.5 part of an interfacial compatibilizer. In the product, the interfacial compatibilizer and the dispersant are added to flame-retardant polypropylene, which enhances the dispersion of the halogen-free flame retardant in the polypropylene resin matrix and further improves the compatibility of the halogen-free flame retardant in the polypropylene resin matrix, thereby enhancing the thermal stability of the obtained polypropylene material. Accordingly, while maintaining high flame-retarding level and mechanical properties, the flame-retardant polypropylene has improved resistance to thermo-oxidative aging, and thus can be applied in high-temperature environments for long time without appearance problems such as blooming/whitening.
The present application relates to the technical field of polymer materials, and discloses a polypropylene composition and a preparation method therefor and a use thereof. The product comprises 59-71 parts of a polypropylene resin, 20-40 parts of a modified glass fiber, 1-5 parts of a compatibilizer, 2-5 parts of a micron-scale inorganic substance, and 0.5-3 parts of a nano-scale inorganic opacifying agent. By modifying a glass fiber comprised in the product and defining the retained length of the modified glass fiber, and by introducing two inorganic components having a synergistic effect with the glass fiber, the product can achieve excellent resistance to an alkaline and damp-heat environment and appearance stability simply under the action of three inorganic materials, without the need to introduce special environmental-resistant reagents or modification processes.
Disclosed in the present invention is a low-acidity halogen-free flame retardant, comprising the following components in parts by weight: 89-96 parts of dialkyl aluminum hypophosphite and 5-10 parts of a hindered amine light stabilizer. The pH value of the low-acidity halogen-free flame retardant is 6.5-7. In the present invention, the acidity of the halogen-free flame retardant is reduced and a specific content of hindered amine light stabilizer is contained, so that when the halogen-free flame retardant is applied to a polyamide composition, the corrosion of the flame retardant to a resin matrix can be ameliorated, and additionally, the flame retardancy and the oxygen isolation are improved, and the corrosion to rubber is reduced.
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.
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.
Disclosed in the present invention is a polyester composition. The polyester composition comprises the following components in parts by weight: 100 parts of a PBT resin, 5-30 parts of a copolyester containing terephthalic acid and cyclohexyl dimethyl carbinol units, and 0.5-16 parts of a plasticizer, wherein the plasticizer is a fatty acid ester plasticizer containing two or more ester bond functional groups. In the present invention, by selecting the specific plasticizer and the specific-content copolyester containing the terephthalic acid and cyclohexyl dimethyl carbinol units, the laser transmittance can be effectively improved, such that the laser welding strength is improved, and the selected plasticizer does not lead to the hydrolysis of the polyester composition; moreover, foaming and overflowing in a laser welding process can be reduced by means of the copolyester containing the terephthalic acid and the cyclohexyl dimethyl carbinol unit. Therefore, the polyester composition of the present invention is suitable for laser welding.
The present invention relates to a long carbon chain polyamide composition, and a preparation method therefor and a use thereof. The composition comprises the following components: a long carbon chain polyamide resin, a flat glass fiber, an amine stabilizer, an anti-coloring agent, and other additives. The long carbon chain polyamide composition of the present invention has good light transmittance, coloring resistance, and alcoholysis resistance.
F01P 11/02 - Liquid-coolant overflow, venting, or draining devices
10.
HALOGEN-FREE FLAME-RETARDANT ENHANCED PBT COMPOSITION CAPABLE OF TRANSMITTING LASER, AND PREPARATION AND USE OF HALOGEN-FREE FLAME-RETARDANT ENHANCED PBT COMPOSITION
The present invention relates to a halogen-free flame-retardant enhanced PBT composition capable of transmitting laser, and a preparation and use of the halogen-free flame-retardant enhanced PBT composition. The components comprise: a PBT resin, PA6T/6I, a halogen-free flame retardant, a flat glass fiber, an amino silane coupling agent, an antioxidant, a lubricant, and a nucleating agent. The flame-retardant enhanced PBT material of the present invention can meet the requirements of laser weldability, high strength and no halogenation at the same time.
The present invention relates to a low post-shrinkage polypropylene material and a preparation method therefor, belonging to the field of polymer materials. In the low post-shrinkage polypropylene material of the present invention, a specific low-shrinkage modifier is introduced into polypropylene, and there can be complex molecular chain entanglements between random copolymerized polypropylene and polyamide and the polypropylene, thereby effectively inhibiting a post-shrinkage effect after product dimensional stabilization and even after heat treatment, and the dimension stability is strong and durable. Since there is no need to add fillers such as minerals or fibers to components to maintain product dimensional stability, product appearance and performance can be guaranteed. Also disclosed are a preparation method for the low post-shrinkage polypropylene material and an application thereof in preparing home appliance parts.
The present invention belongs to the technical field of plastic materials. Provided are a low-warpage and glass fiber reinforced polyacrylic material and a method for preparing same, and use thereof in preparing an automobile lamp shell material. For the product components, a composite compatilizer of maleic anhydride grafted copolymer polyacrylic and hexamethylenediamine grafted polyacrylic is used to reduce the warpage of the product and deal with the compatibility problem between the glass fiber and polyacrylic resin, so that the product has good mechanical property and low warpage without introducing a mineral filler or a flat glass fiber and has no such defects as floating fiber in appearance.
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 23/36 - 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 reaction with nitrogen-containing compounds, e.g. by nitration
Disclosed are a polyamide polypropylene alloy material, a method for preparing same, and use thereof. The material comprises the following components in parts by weight: 20-55 parts of a polyamide 6 resin, 18-30 parts of a polypropylene resin, 4-10 parts of a PA MXD 6 resin, 3-8 parts of an ethylene vinyl alcohol copolymer, 3-8 parts of a compatibilizer, 25-35 parts of a glass fiber, 0.5-1 part of an antioxidant, and 0.5-1 part of a lubricant. The present invention adopts maleic anhydride grafted polypropylene, the PA MXD 6 resin, and EVOH to carry out compatibilizing modification on the PA 6 resin and the PP resin, which can significantly improve heat aging resistance, electrolyte resistance, a tensile strength, and the appearance of a product; the obtained material has excellent mechanical properties, good appearance, and high aging resistance and electrolyte resistance; the comprehensive performance of the PA/PP alloy is extended; the material can be used for automobile parts, particularly parts in an automobile engine compartment.
Disclosed in the present invention are a long glass fiber reinforced polypropylene material and a preparation method therefor and an application thereof. The material comprises the following components: polypropylene resin, polyamide resin, a compatibilizing agent, a nylon elastomer, long glass fibers, aluminum powder, and an auxiliary agent. According to the present invention, by means of the long glass fibers and the aluminum powder compounded with different particle sizes, a uniform metal flickering effect is achieved; the aluminum powder is distributed on the surface of a workpiece to cover floating fibers; the long glass fibers are interspersed with one another, so that material property reduction caused by the addition of the aluminum powder is avoided; the polyamide and the nylon elastomer are added, so that the scratch resistance and the impact resistance are improved. The material is suitable for appearance structural parts, free of spraying, and wide in application prospect.
C08L 77/02 - Polyamides derived from omega-amino carboxylic acids or from lactams thereof
C08L 87/00 - Compositions of unspecified macromolecular compounds, obtained otherwise than by polymerisation reactions only involving unsaturated carbon-to-carbon bonds
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
A long fiber reinforced polypropylene material as well as a preparation method therefor and the use thereof. The long fiber reinforced polypropylene material comprises the following components in parts by weight: 29-70 parts of polypropylene, 3-10 parts of ultra-high molecular weight polyethylene, 3-15 parts of polyvinyl butyral, 3-8 parts of maleic anhydride grafted POE, 20-50 parts of long glass fibers and 0.3-1.2 parts of wollastonite. The long fiber reinforced polypropylene material has a smooth and good surface appearance, and also has high tensile strength and notch impact strength and excellent toughness and extrusion performance, thereby being suitable for the use in an extrusion forming process.
C08L 29/14 - Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols
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
Disclosed in the present invention are a PBT composition, a preparation method therefor and the use thereof. The PBT composition of the present invention comprises the following components in parts by weight: 35-45 parts of PBT resin, 10-20 parts of PC resin, 25-40 parts of brominated PC, 5-15 parts of a toughening agent and 0.1-0.3 part of an ester exchange inhibitor, wherein the brominated PC is a random copolymer of triphosgene, tetrabromobisphenol A and bisphenol A, the intrinsic viscosity of the PBT resin is 0.8-1.2 dl/g, and the melt index of the PC resin ≤ 10 g/10min, the melt index being tested under the condition of 300 ℃/1.2kg according to the ASTM D1238 standard. The PBT composition of the present invention has a notched cantilever beam impact resistance (type A) of 500 J/m or above, a molding shrinkage rate of 1% or above and a maximum covered bolt torque value of 27 N·m or above, and therefore is suitable for manufacturing an embedded bolt insert.
Disclosed in the present invention are a polyamide composite material, a preparation method therefor, and an application thereof. The polyamide composite material comprises the following components in parts by weight: 85-95 parts of a polyamide resin; and 5-15 parts of melamine cyanurate, wherein the sum of the parts by weight of the polyamide resin and the melamine cyanurate is 100 parts, and the pH of the melamine cyanurate is 5.0-7.5. According to the present invention, by selecting melamine cyanurate within a certain pH range and selecting proper process conditions in the material preparation process, the TVOC content of the material and the particle size distribution of melamine cyanurate in the material can be controlled, so that the IPT performance (an IPT value can reach 1500 V) of the polyamide material is effectively improved, the use requirements of products having high electrical property requirements can be satisfied; and the polyamide material is especially suitable for electronic products having a rated voltage of 1000-1500 V, and the application range of the polyamide material in the field of electronic appliances is further widened.
A polyamide composition, comprising the following components in parts by weight: 100 parts of polyamide resin, 0-100 parts of a reinforcing material, and 0.05-1 part of germanium disulfide. By adding a certain amount of germanium disulfide into the polyamide material, the long-term thermal aging resistance of the material can be effectively improved, meanwhile, no negative influence is caused on CTI of the material, the polyamide material with excellent long-term thermal aging resistance is prepared, the service life of the polyamide material is greatly prolonged, and the use value is high.
Disclosed in the present invention is a long glass fiber reinforced polypropylene composite material, comprising the following components in parts by weight: 30-70 parts of homo-polypropylene, 1-8 parts of an ethylene-vinyl alcohol copolymer, 1-6 parts of a compatilizer, 10-70 parts of long glass fiber, and 0.2-2 parts of an additive. According to the present invention, a certain amount of the ethylene-vinyl alcohol copolymer is added into homo-polyethylene, and the type of long glass fiber is specially selected, such that the infiltration effect of ultra-high-strength long glass fiber is obviously improved, the technical defects of poor solvent resistance and non-uniform dispersion of ultra-high-strength long glass fiber reinforced polypropylene are overcome, and the solvent resistance and the mechanical property of the material are improved.
A polycarbonate alloy material, comprising the following components in parts by weight: 40-70 parts of polycarbonate; 20-40 parts of polyethylene terephthalate; and 0.1-2 parts of a metal compound. The metal compound is selected from any one of a metal oxide, a metal base, or a metal salt, and the metal is selected from any one of copper, iron, magnesium, calcium, titanium, antimony, sodium, or potassium. A certain amount of polyethylene terephthalate and a specific metal compound are added to the polycarbonate, such that a prepared polycarbonate alloy material has excellent chemical resistance, also has high melt strength and low melt cooling rate, and is applicable to extrusion blow molding processing to prepare a thick-walled and large-scale packaging container product, such that novel options of materials and molding approaches are provided for the field of packaging, the use requirements of drug packaging containers can be particularly satisfied, and the application of a polycarbonate material is further broadened.
Disclosed in the present invention is a polyamide composite material, comprising the following components in parts by weight: 100 parts of a polyamide resin; 0.3-5 parts of an intrinsic repairing agent containing an epoxy group; and 0.05-1.5 parts of an iron, lithium or copper metal salt. In the present invention, the epoxy group-containing intrinsic repairing agent and the iron, lithium or copper metal salt are compounded, and the presence of the metal salt can significantly improve the repairing effect of the epoxy group-containing intrinsic repairing agent when the composite material suffers from structural damages under poor working conditions, such that the service life of the polyamide composite material is prolonged, the resource waste is reduced, and the safety and reliability of the system are improved.
Disclosed in the present invention are a semi-aromatic polyester, and a preparation method therefor and the use thereof. The semi-aromatic polyester has a double-bond content in a specific range, and compared with known semi-aromatic polyesters, same has better melting heat retention stability and good color.
Disclosed in the present invention are a semi-aromatic polyester, and a preparation method therefor and an application thereof. The content of hydroxyl in a semi-aromatic polyester is controlled, and particularly, in the semi-aromatic polyester, 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, so that the compatibility of the semi-aromatic polyester with materials such as polylactic acid can be significantly improved, thereby obtaining a high-strength tear-resistant thin film material.
Disclosed in the present invention are a semi-aromatic polyester, and a preparation method and application thereof. The semi-aromatic polyester has a specific link length and carboxyl content. Compared with a known semi-aromatic polyester, both a degradation rate and mechanical performance are balanced. The 30-day weight retention rate of the obtained semi-aromatic polyester can be controlled at 45-70%.
Disclosed in the present invention is a semiaromatic polyester, a preparation method and application thereof. Having a specific segment length and carboxyl group content, the semiaromatic polyester provides a balance of degradation rate and mechanical properties, compared with known semiaromatic polyesters. The 30-day weight retention of the semiaromatic polyester obtained in the present invention may be contained to from 45 to 70%.
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
26.
POLYAMIDE COMPOSITE FOR IMPROVING LASER WELDABILITY
A polyamide composite for improving laser weldability, comprising at least one polyamide resin. The polyamide resin is obtained by means of a polymerization reaction of the following monomers: 1) at least 10 mol% of monomers which form a diamine-derived structure repeating unit of the polyamide and are derived from at least one aliphatic diamine and/or cycloaliphatic diamine, the total number of carbon atoms of which is an odd number and/or the number of carbon atoms located on the backbone of which is an odd number; and 2) at least 10 mol% of monomers which form a dicarboxylic acid-derived structure repeating unit of the polyamide and are derived from at least one aliphatic dicarboxylic acid, the total number of carbon atoms of which is 4-18; or 3) at least 10 mol% of monomers which form a dicarboxylic acid-derived structure repeating unit of the polyamide and are derived from at least one aliphatic dicarboxylic acid and/or cycloaliphatic dicarboxylic acid, the total number of carbon atoms of which is an odd number and/or the number of carbon atoms located on the backbone of which is an odd number; and 4) at least 10 mol% of monomers which form a diamine-derived structure repeating unit of the polyamide and are derived from at least one aliphatic diamine and/or cycloaliphatic diamine, the total number of carbon atoms of which is 4-18. The polyamide resin accounts for 25%-90% of the total weight of the polyamide composite. By improving the structure of the polyamide resin, the laser weldability can be effectively improved, the application range of laser welding is further widened, and the laser transparency and the laser welding strength are improved.
Disclosed in the present invention is a polyamide composite material comprising the following components in parts by weight: A) 20-80 parts of a compound of at least one polyamide E and at least one of polyamide I, polyamide II, and polyamide III, the content of the polyamide end amino E, polyamide I, polyamide II, and polyamide III group > the content of a terminal carboxyl group; and B) 0-35 parts of filler. The polyamide composite material of the present invention has the advantage of a good laser welding effect.
Provided are a complex capable of achieving low-temperature laser marking of multiple colors and a preparation method therefor. The complex comprises the following components in parts by weight: 100 parts of a polymer, 0.1-1 part of a thermally conductive additive, 1-3 parts of a heat-sensitive additive, 0.1-1 parts of a chromogenic reagent, and 0.1-2 parts of an organic pigment. The preparation method comprises: mixing the raw materials in proportion for melt extrusion and granulation; then performing melt extrusion or injection molding to form a plastic product; and next, performing laser marking on the surface of the plastic product by a laser pulse, and controlling, by laser energy, the laser marking temperatures on the plastic surface to obtain marks of various colors. The addition of a heat-sensitive additive and a chromogenic reagent enables the material to achieve low-temperature laser marking of multiple colors by laser pulses, the effect is special, the process is simple, and the invention can be used for product appearance decoration and has a good market application prospect.
Disclosed is an anti-warping high-temperature-resistant reinforced polyamide composition, comprising the following components in percentages by weight: 13.58%‑82.98% of at least one semi-crystalline polyamide; 2%‑20% of at least one amorphous semi-aromatic polyamide; 0.01%‑5% of a metal salt compound; 15%-60% of a filler; and 0.01%‑12％ of a polyamide modifier. The polyamide composition is better than existing polyamide compositions containing metal salts and highly branched compounds in terms of mechanical properties and surface appearance, and has many improved physical properties and moldability, including improved surface appearance of mold parts.
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 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
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 13/04 - Ingredients characterised by their shape and organic or inorganic ingredients
patents
