Abrégé

A method for evaluating the enhancement effect and enhancement efficiency of a filler on natural rubber on the basis of the particle size of bonded latex particles formed by the filler and natural latex. The method comprises: uniformly mixing natural rubber latex and a filler to obtain a solution to be measured, then using an instrument to measure an average particle size value of latex particles, and on the basis of the ratio of the value to the particle size of pure natural latex particles with the same concentration and without adding the filler, evaluating whether the filler has an enhancement effect on natural rubber or not; and on the basis of an established functional relation, further deducing the stress at definite elongation of the filler/natural rubber vulcanized rubber prepared by various processes, and on the basis of the stress at definite elongation, quantitatively evaluating the enhancement efficiency of the filler on the natural rubber. The method can quickly and accurately evaluate the enhancement effect and enhancement efficiency of a filler on natural rubber, thereby, on one hand, providing a scientific, accurate, rapid and efficient evaluation method for the modification effect of fillers, and on the other hand, laying a foundation for scientific, accurate, rapid and efficient optimization of rubber formulas.

Classes IPC  ?

• G01N 33/44 - RésinesMatières plastiquesCaoutchoucCuir
• G01N 15/02 - Recherche de la dimension ou de la distribution des dimensions des particules
• G01N 23/2055 - Analyse des diagrammes de diffraction
• G01N 3/08 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression

Abrégé

Cellulose/urea-formaldehyde water-retaining slow-release fertilizer granules prepared by means of a polycondensation-grafting-crosslinking integrated reaction extrusion process and an application method thereof. In a double-screw reaction extruder, low-polymerization-degree urea-formaldehyde undergoes a polycondensation reaction to generate urea-formaldehyde having a relatively high molecular weight, and under the strong shearing action of the extruder, cellulose having a large number of exposed active hydroxyl groups undergoes a nucleophilic substitution or condensation reaction, so that urea-formaldehyde macromolecules generated in situ are grafted onto macromolecular chains thereof; and -COOH of citric acid and -OH of cellulose simultaneously undergo a cross-linking reaction. By means of the polycondensation-grafting-crosslinking three-in-one reaction extrusion process, a cellulose/urea-formaldehyde compound is generated, thereby obtaining the cellulose/urea-formaldehyde water-retaining slow-release fertilizer granules in one step. By modifying urea-formaldehyde with hydroxyethyl cellulose, the strong intermolecular and intramolecular hydrogen bonding can enhance the mechanical properties of the urea-formaldehyde fertilizer, and the long molecular chains and abundant hydrophilic groups can also significantly improve the water absorption and water retention performance of the fertilizer.

Classes IPC  ?

• C05G 3/40 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur le dosage de l’engrais ou sur sa vitesse de libérationMélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la solubilité
• C05G 3/80 - Conditionneurs de sol
• C05G 3/90 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la nitrification des composés d’ammonium ou de l’urée dans le sol
• C05G 5/12 - Granulés ou flocons
• C08G 81/00 - Composés macromoléculaires obtenus par l'interréaction de polymères en l'absence de monomères, p. ex. polymères séquencés
• A01C 21/00 - Méthodes de fertilisation
• B29C 48/00 - Moulage par extrusion, c.-à-d. en exprimant la matière à mouler dans une matrice ou une filière qui lui donne la forme désiréeAppareils à cet effet

Abrégé

The present invention relates to the technical field of functional composite materials, and in particular to an electromagnetic wave absorption-transmission integrated lightweight metamaterial with both polarization stability and wide-angle-of-incidence stability, and a simplified preparation process therefor. The metamaterial is of a symmetrical structure comprising at least one periodically arranged square frequency-selection unit structure, wherein the square frequency-selection unit structure comprises a bottom-layer dielectric substrate, a bottom-layer metal structure array layer, a middle-layer dielectric substrate, a middle-layer carbon-based conductive thin-film structure array layer, a top-layer dielectric substrate and a top-layer carbon-based conductive thin-film structure array layer, which are stacked in sequence from bottom to top. By means of coupling cooperation of multiple layers of periodic unit arrays, and by means of replacing a widely used metal pattern with a carbon-based conductive film lossy layer and using an epoxy reinforced fiberglass cloth composite plate, an electromagnetic wave absorption-transmission integrated metamaterial with advantages, such as a low price, easiness of manufacturing, good polarization stability, good wide-angle-of-incidence stability, a low insertion loss in a wave-transmission frequency band, a high absorption rate in a wave-absorption frequency band, easiness of frequency-band adjustment and a light weight, is obtained.

Classes IPC  ?

• H01Q 15/00 - Dispositifs pour la réflexion, la réfraction, la diffraction ou la polarisation des ondes rayonnées par une antenne, p. ex. dispositifs quasi optiques
• H01Q 17/00 - Dispositifs pour absorber les ondes rayonnées par une antenneCombinaisons de tels dispositifs avec des éléments ou systèmes d'antennes actives

Abrégé

The present invention relates to the technical field of graphene and functional natural rubber composite materials, and specifically relates to the preparation of a low-heat-buildup, high-thermal-conductivity and long-life solid tire based on high-strength and high-toughness ball milling–sulfhydryl synergistically modified graphene/natural rubber. Graphene is modified by means of a ball milling–sulfhydryl synergistic modification process, high-strength and high-toughness ball milling–sulfhydryl synergistically modified graphene/natural rubber is then prepared by using an aqueous-phase synergistic polymerization process and a mechanical blending method, and thus a low-heat-buildup, high-thermal-conductivity and long-life solid tire thereof is prepared. By means of ball-milling modification of a graphene oxide slurry, the edge carbon defects thereof are increased, and the content of free radicals on the surface thereof is also increased; the edge carbon defects can increase the loading capacity during subsequent sulfhydryl modification; and the free radicals on the surface can remove free radicals generated by molecular chain breakage caused by thermal and oxygen attacks during the initial heat buildup of a tire in a dynamic driving state, thereby reducing the thermal decomposition of the molecular chain of the natural rubber matrix and decreasing the fatigue compression heat buildup value, and therefore the aging speed of the tire is delayed.

Classes IPC  ?

• C08L 7/00 - Compositions contenant du caoutchouc naturel
• C08K 3/04 - Carbone
• C08K 9/06 - Ingrédients traités par des substances organiques par des composés contenant du silicium
• B60C 1/00 - Pneumatiques caractérisés par la composition chimique, la disposition ou le mélange physique de la composition

Abrégé

The present invention belongs to the field of graphene and functional rubber composites thereof, and particularly relates to a graphene-modified natural rubber that is simultaneously reinforced and toughened based on a strong interface action of a free radical annihilation reaction. A free radical adsorbent is loaded on the surface of reduced graphene oxide during the process of reducing graphene oxide, and a reduced graphene oxide-modified natural rubber composite is then prepared by using a water-phase synergistic coagulation process and a mechanical blending method. During the mechanical blending process, the free radical adsorbent, which is loaded on the surface of the reduced graphene oxide, can be subjected to an annihilation reaction with free radicals, which are generated when rubber macromolecules are subjected to the action of heat and/or force, and the reinforcing effect thereof on the interaction of a two-phase interface is greater than that of a hydrogen bond, such that the content of bound rubber of the natural rubber can be increased, the cross-linking density of the natural rubber vulcanized rubber is increased, the cross-linked network is better improved, and a simultaneously reinforced and toughened graphene-modified natural rubber composite is finally obtained. The preparation process of the present invention is simple and environmentally friendly, and does not have any harsh requirements.

Classes IPC  ?

• C08L 7/00 - Compositions contenant du caoutchouc naturel
• C08K 9/12 - Ingrédients adsorbés
• C08K 3/04 - Carbone

Abrégé

A method for evaluating reinforcement effect and efficiency of a filler on natural rubber based on particle size of bound rubber particles formed by the filler and natural rubber particle in a natural rubber latex, in which the natural rubber latex and the filler are mixed and diluted to obtain a to-be-detected emulsion, and an average particle size of bound rubber particles is measured using an instrument; a ratio of the average particle size to an average particle size of natural rubber particles in a pure rubber latex emulsion with the same concentration is calculated; the reinforcement effect of the filler on the natural rubber is evaluated based on the ratio; a function expression is established to derive a stress at definite elongation of various filler-modified natural rubber vulcanizates; and according to the function expression, the reinforcement efficiency of the filler on the natural rubber is evaluated.

Classes IPC  ?

• G01N 33/44 - RésinesMatières plastiquesCaoutchoucCuir
• G01N 15/02 - Recherche de la dimension ou de la distribution des dimensions des particules

Abrégé

An optimization method for molding mold and filling process of resin transfer molding (RTM) to form fiber fabric reinforced resin-based composite parts is provided. A simulation platform is used to simulate the mold filling process of RTM process. Brinkman equations are used to describe a flow of resin in fiber fabric. Numbers and positions, process parameters and material parameters of an injection gate and a discharging gate of the molding mold are set, and then the mold filling process is simulated. Darcy's law is utilized to determine a required time and a mold filling effect of the mold filling with the resin. Finally, a molding mold structure and the filling process of RTM to form fiber fabric reinforced resin-based composite part with high production efficiency and good quality are obtained.

Classes IPC  ?

• G06F 30/23 - Optimisation, vérification ou simulation de l’objet conçu utilisant les méthodes des éléments finis [MEF] ou les méthodes à différences finies [MDF]
• B29C 70/48 - Façonnage ou imprégnation par compression pour la fabrication d'objets de longueur définie, c.-à-d. d'objets distincts utilisant des moules opposables, p. ex. pour déformer des préimprégnés [SMC] ou des "prepregs" avec une imprégnation des renforcements dans le moule fermé, p. ex. moulage par transfert de résine [RTM]
• B29C 70/54 - Parties constitutives, détails ou accessoiresOpérations auxiliaires
• B29K 63/00 - Utilisation de résines époxy comme matière de moulage
• B29K 223/00 - Utilisation de polyalcènes comme matière de renforcement

Abrégé

A method for preparing a graphene-modified natural rubber (NR) with an interfacial interaction based on a free radical annihilation reaction is provided. In the process of reducing graphene oxide (GO), a free radical scavenger is loaded on a surface of reduced graphene oxide (rGO). An rGO-modified NR composite is prepared through aqueous synergistic aggregating precipitation process and mechanical blending. The free radical scavenger loaded on the rGO particles are capable of annihilating macromolecular free radicals generated by NR macromolecules due to an action of heat and/or force during the mixing and milling processes, an enhancement effect of the free radical annihilation reaction on an interfacial interaction between graphene and NR is great, so as to obtain a graphene-modified NR composite with improved strength and toughness.

Classes IPC  ?

• C08K 9/00 - Emploi d'ingrédients prétraités
• C08J 3/215 - Formation de mélanges de polymères avec des additifs, p. ex. coloration en présence d'une phase liquide le polymère étant prémélangé avec une phase liquide au moins un additif étant également prémélangé avec une phase liquide
• C08L 7/02 - Latex

Abrégé

A lightweight absorption-transmission integrated metamaterial to electromagnetic waves with polarization stability and wide-incident-angle stability, which has a symmetric structure including at least one square frequency-selective structure-unit arranged periodically. The square frequency-selective structure-unit includes a first dielectric substrate, a metal array structure layer, a second dielectric substrate, a first carbon-based conductive film array structure layer, a third dielectric substrate, and a second carbon-based conductive film array structure layer, which are laminated in sequence with the first dielectric substrate as the bottom. A method for preparing such lightweight absorption-transmission metamaterial to electromagnetic waves is also provided.

Classes IPC  ?

• H05K 9/00 - Blindage d'appareils ou de composants contre les champs électriques ou magnétiques
• H01Q 17/00 - Dispositifs pour absorber les ondes rayonnées par une antenneCombinaisons de tels dispositifs avec des éléments ou systèmes d'antennes actives

Abrégé

An optimizing method for a molding process of a part made of a fiber-reinforced polymer composite is provided. A finite element method is adopted to perform thermochemical analysis of a macroscopic model of the part and thermomechanics analysis of a microscopic model of the part, so as to simulate temperature gradient, curing degree, and residual stress of the part during the molding process. A genetic algorithm is executed, with simultaneous minimization of temperature gradient, molding time, and residual stress as an optimization goal and a curing process curve as a parameter variable, to achieve the simultaneous multi-objective optimization of molding process parameters, so as to obtain an optimized molding process.

Classes IPC  ?

• G06F 30/23 - Optimisation, vérification ou simulation de l’objet conçu utilisant les méthodes des éléments finis [MEF] ou les méthodes à différences finies [MDF]
• G06F 111/06 - Optimisation multi-objectif, p. ex. optimisation de Pareto utilisant le recuit simulé, les algorithmes de colonies de fourmis ou les algorithmes génétiques
• G06F 113/22 - Moulage
• G06F 113/26 - Composites
• G06F 119/08 - Analyse thermique ou optimisation thermique
• G06N 3/126 - Algorithmes évolutionnaires, p. ex. algorithmes génétiques ou programmation génétique

Abrégé

The present invention relates to the technical field of nonmetallic compounds, and in particular to a reaction-extrusion preparation process and fertilization method for a weathered coal humic acid/urea-formaldehyde compound. In an alkaline environment, paraformaldehyde is depolymerized into formaldehyde small molecules and reacts with urea in a system to generate monomethylol urea and dimethylol urea. Then, under the strong shearing action of screws of a twin-screw reaction extruder, macromolecular weathered coal humic acid in the system is cracked into relatively small-molecular weathered coal humic acid to expose a large number of active groups of carboxyl, some of which are immediately subjected to dehydration-condensation reaction with amino on urea-formaldehyde molecules generated by polycondensation in the reaction-extrusion process in the system to generate a weathered coal humic acid/urea-formaldehyde compound, and particles of the weathered coal humic acid/urea-formaldehyde compound are obtained. The prepared compound particles have a high compressive strength, so that the breakage of fertilizer particles during storage, transportation and application can be avoided, and a fertilization and sowing integrated machine can be used to perform fertilization while sowing, thereby saving labor, time and fertilizers.

Classes IPC  ?

• C05C 9/02 - Engrais contenant de l'urée ou ses composés contenant des produits de condensation uréeformaldéhyde
• C05G 3/40 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur le dosage de l’engrais ou sur sa vitesse de libérationMélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la solubilité
• C05G 3/80 - Conditionneurs de sol
• C05G 5/12 - Granulés ou flocons
• B01J 2/20 - Procédés ou dispositifs pour la granulation de substances, en généralTraitement de matériaux particulaires leur permettant de s'écouler librement, en général, p. ex. en les rendant hydrophobes en exprimant une substance à travers un crible et fragmentation de l'extrudat
• A01C 21/00 - Méthodes de fertilisation

Abrégé

Preparation of a long-life load-bearing tire made of natural rubber having undergone graphene/different-particle-size carbon black synergistic modification and vulcanization modification. Carbon black having different particle sizes is subjected to surface modification to prepare a graphene oxide/different-particle-size carbon black uniform dispersion liquid, a rubber master batch is then prepared by using a water-phase synergetic coagulation-sedimentation process, and the long-life load-bearing tire made of natural rubber having undergone graphene/different-particle-size carbon black synergistic modification and vulcanization modification is eventually obtained. The dispersion of a reinforcing filler in a rubber matrix is improved by utilizing a method of compounding graphene and carbon black having different particle sizes, thereby slowing down the aging failure of the load-bearing tire while improving the hardness and mechanical properties of the rubber; moreover, the crosslinked network structure of the rubber is adjusted by regulating and controlling the ratio of a vulcanizing agent to an accelerant, thereby enabling the rubber to have better mechanical properties while improving the heat generation and hardness thereof, and therefore the service life of the load-bearing tire made of natural rubber is further prolonged.

Classes IPC  ?

• C08L 7/00 - Compositions contenant du caoutchouc naturel
• C08K 9/04 - Ingrédients traités par des substances organiques
• C08K 9/02 - Ingrédients traités par des substances inorganiques
• C08K 9/08 - Ingrédients agglomérés par traitement avec un liant
• C08K 3/04 - Carbone
• B60C 1/00 - Pneumatiques caractérisés par la composition chimique, la disposition ou le mélange physique de la composition
• B29D 30/02 - Bandages pleins
• B29B 7/00 - MélangeMalaxage

Abrégé

A lightweight, low-thickness, durable, and reliable multi-band radar stealth-bulletproof integrated metamaterial includes a ceramic layer, an ultrahigh molecular weight polyethylene (UHMWPE) fiber composite bulletproof layer, a graphene-based metamaterial filter layer, an UHMWPE fiber composite attenuation layer, and a carbon fiber composite reflective layer stacked in sequence. The two UHMWPE fiber composite layers are configured to attenuate radar waves. The circuit resonance of the graphene-based metamaterial filter layer is configured to generate a passband and a stopband simultaneously. The bulletproof layer and the attenuation layer are controlled by the graphene-based metamaterial filter layer in terms of working conditions in different radar frequency bands to establish a structure capable of generating λ/4 resonance at both low and high frequencies, so as to arrive at a stealth-bulletproof integrated metamaterial with small thickness and excellent dual-band radar wave absorption capability.

Classes IPC  ?

• B32B 9/00 - Produits stratifiés composés essentiellement d'une substance particulière non couverte par les groupes
• B32B 3/14 - Produits stratifiés comprenant une couche ayant des discontinuités ou des rugosités externes ou internes, ou une couche de forme non planeProduits stratifiés comprenant une couche ayant des particularités au niveau de sa forme caractérisés par une couche discontinue, c.-à-d. soit continue et percée de trous, soit réellement constituée d'éléments individuels caractérisés par une couche de surface formée d'éléments individuels
• B32B 9/04 - Produits stratifiés composés essentiellement d'une substance particulière non couverte par les groupes comprenant une telle substance comme seul composant ou composant principal d'une couche adjacente à une autre couche d'une substance spécifique
• B32B 27/12 - Produits stratifiés composés essentiellement de résine synthétique adjacente à une couche fibreuse ou filamenteuse
• B32B 27/16 - Produits stratifiés composés essentiellement de résine synthétique spécialement traitée, p. ex. irradiée
• B32B 27/28 - Produits stratifiés composés essentiellement de résine synthétique comprenant des copolymères de résines synthétiques non complètement couverts par les sous-groupes suivants
• F41H 5/04 - Structure des plaques composées de plus d'une couche
• H05K 9/00 - Blindage d'appareils ou de composants contre les champs électriques ou magnétiques

Abrégé

A lightweight, ballistic and blast-resistant multi-phase composite armor material based on a high-toughness heterogeneous interfacial layer, including a crack-arresting layer, a bullet-breaking layer, an energy-absorbing layer, and a support layer. The crack-arresting layer, the bullet-breaking layer, the energy-absorbing layer, and the support layer are stacked in sequence from a bullet-accepting side to the inside. Adjacent two layers are bonded with an adhesive film layer. The crack-arresting layer and the support layer are both made of a carbon fiber composite. The bullet-breaking layer is made of ceramic. The energy-absorbing layer is made of an ultra-high molecular weight polyethylene fiber composite. The adhesive film layer is made of a high-toughness heterogeneous interfacial adhesive.

Classes IPC  ?

• F41H 5/04 - Structure des plaques composées de plus d'une couche

Abrégé

The present invention relates to the technical field of functional composite materials, and in particular, to a lightweight, low-thickness, long-term reliable multi-band radar stealth and bulletproof integrated metamaterial, comprising a ceramic layer, an ultra-high molecular weight polyethylene (UHMWPE) fiber composite bulletproof layer, a graphene-based metamaterial filter layer, an ultra-high molecular weight polyethylene fiber composite loss layer, and a carbon fiber reflective layer that are sequentially stacked. By the use of the two ultra-high molecular weight polyethylene fiber resin composite layers as loss layers and the circuit resonance of the graphene-based metamaterial filter layer to produce passbands and stopbands, the present invention controls the working conditions of the ultra-high molecular weight polyethylene fiber resin composite layers in different radar wave frequency bands and thus establish a structure capable of producing a λ/4 resonance simultaneously at low and high frequencies, so as to give a stealth metastructure having the advantages of lightweight, a low thickness, and excellent absorption capability in dual frequency bands based on a bulletproof structure, thus achieving the effective synergy between bulletproof performance and radar stealth performance and maintaining the ability to address radar detection even after a certain degree of strike damage.

Classes IPC  ?

• H01Q 15/00 - Dispositifs pour la réflexion, la réfraction, la diffraction ou la polarisation des ondes rayonnées par une antenne, p. ex. dispositifs quasi optiques

Abrégé

The present invention belongs to the technical field of functional rubber composite materials, and particularly relates to a high-efficiency and low-cost preparation method for a high-graphene-content superfine natural rubber powder masterbatch and use. Firstly, a high-graphene-content superfine natural rubber powder masterbatch with a particle diameter lower than 5 μm is obtained by adopting a spray drying method easy for industrial production, and then the obtained high-graphene-content superfine natural rubber powder masterbatch is mixed with a natural rubber block, carbon black and the like by adopting a mechanical blending process to prepare a graphene-modified natural rubber nanocomposite material. The present invention utilizes the spray drying process to prepare the graphene-modified natural rubber superfine powder masterbatch, so that the time and energy consumption of dehydration and drying can be greatly reduced, and the production period is greatly shortened, thereby significantly reducing the cost of the graphene-modified natural rubber masterbatch, providing a new thought for the application of the graphene-modified natural rubber nanocomposite material in the tire industry, and also laying a foundation for green and environmentally friendly practices in the tire industry.

Classes IPC  ?

• C08L 7/00 - Compositions contenant du caoutchouc naturel
• C08K 9/04 - Ingrédients traités par des substances organiques
• C08K 3/04 - Carbone
• B29B 7/00 - MélangeMalaxage

Abrégé

The present invention relates to the technical field of non-metal compounds, particularly relates to the field of sustained-/controlled-releasing urea-formaldehyde chemical fertilizers, and particularly relates to a papermaking wood pulp byproduct sulfonated lignin/urea-formaldehyde fertilizer and a reactive extrusion granulation process. The process comprises mixing a hydroxymethylated sulfonated lignin solution and a hydroxymethylurea solution, then pumping same into a reactive extrusion all-in-one machine, reacting same until the system becomes viscous, then extruding same by a twin-screw extruder to obtain a strip-shaped product, drying same and then cutting same into granules to obtain papermaking wood pulp byproduct sulfonated lignin/urea-formaldehyde fertilizer columnar granules. With respect to the papermaking wood pulp byproduct sulfonated lignin/urea-formaldehyde fertilizer columnar granules prepared by the present invention, sulfonated lignin molecules are introduced onto the backbone of urea-formaldehyde macromolecules to reduce the degree of polymerization and the degree of crystallinity of the urea-formaldehyde fertilizer, so as to regulate the release rate of nitrogen nutrients in the fertilizer, thus solving the defect of slow nutrient release in later growth periods of crops of traditional urea-formaldehyde fertilizers, and widening the range of applicable crops of urea-formaldehyde fertilizers.

Classes IPC  ?

• C08H 7/00 - LignineLignine modifiéeProduits dérivés à haut poids moléculaire
• C05G 3/40 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur le dosage de l’engrais ou sur sa vitesse de libérationMélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la solubilité
• C05G 3/80 - Conditionneurs de sol
• C05G 5/12 - Granulés ou flocons
• B29B 9/06 - Fabrication de granulés par division de matière préformée sous forme de filaments, p. ex. combinée avec l'extrusion

Abrégé

222OH on the surface of the starch undergo a dehydration condensation reaction under acidic and high-temperature conditions to generate a urea formaldehyde/starch polycondensate having said structure. Compared with traditional urea formaldehyde fertilizer, after starch is introduced, the present invention greatly improves the mechanical performance of prepared urea formaldehyde fertilizer particles, achieves high particle strength, and facilitates subsequent storage, transportation, and application.

Classes IPC  ?

• C05G 3/40 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur le dosage de l’engrais ou sur sa vitesse de libérationMélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la solubilité
• C05G 3/90 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la nitrification des composés d’ammonium ou de l’urée dans le sol
• C05G 5/12 - Granulés ou flocons

Abrégé

The present invention relates to a trace element-amino acid chelate/urea-formaldehyde slow-release fertilizer and a reactive extrusion preparation process therefor. Said slow-release fertilizer consists of a biodegradable urea-formaldehyde polymer and a trace element-amino acid chelate, wherein the macromolecular chain of the biodegradable urea-formaldehyde polymer interpenetrates into a cross-linked network structure of the molecular chain of the trace element-amino acid chelate, thereby the two structures forming a polymer composite having a semi-interpenetrating network structure. Said slow-release fertilizer solves the defect of a single nutrient in existing urea-formaldehyde slow-release nitrogen fertilizers and provides various nutrients for plant growth, and also can improve the utilization efficiency of nitrogen contained in urea-formaldehyde and introduced trace elements such as ferrum, copper and zinc. In addition, the reactive extrusion granulation process has the advantages of continuous large-scale production, low investment and low cost, no use of solvents harmful to human bodies and environment, simplified volatile matter removal and granulation processes for the polymer, high efficiency, uniform product performance and the like. Therefore, the present invention has good application prospects.

Classes IPC  ?

• C05G 3/40 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur le dosage de l’engrais ou sur sa vitesse de libérationMélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la solubilité

Abrégé

2 on the urea-formaldehyde molecule produced by the polycondensation of hydroxymethylurea during the reactive extrusion process to generate weathered coal-derived humic acid/urea-formaldehyde and its granules.

Classes IPC  ?

• C05C 9/02 - Engrais contenant de l'urée ou ses composés contenant des produits de condensation uréeformaldéhyde
• C05F 11/02 - Autres engrais organiques à partir de tourbe, lignite ou autres dépôts végétaux similaires
• C05G 3/40 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur le dosage de l’engrais ou sur sa vitesse de libérationMélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la solubilité
• C05G 5/12 - Granulés ou flocons

Abrégé

A sulfonated lignin as a by-product of papermaking wood pulp/urea-formaldehyde (UF) fertilizer and a method for preparing the same by a reactive extrusion and granulation process are provided. The method includes: mixing a hydroxymethylated sulfonated lignin solution with a hydroxymethyl-urea solution followed by feeding into a reaction-extrusion integrated machine and reaction at a preset temperature for a preset time; subjecting the reaction mixture to extrusion through a twin-screw extruder to obtain a strip product; and drying the strip product followed by granulation to obtain a sulfonated lignin as a by-product of papermaking wood pulp/UF fertilizer columnar particles. Sulfonated lignin molecules are introduced to the main chain of the UF macromolecules to reduce the polymerization degree and crystallinity of the UF fertilizer, so as to regulate the nitrogen release rate.

Classes IPC  ?

• C08H 7/00 - LignineLignine modifiéeProduits dérivés à haut poids moléculaire
• C05F 9/00 - Engrais fabriqués à partir des ordures ménagères ou de ville

Abrégé

This disclosure relates to slow- and controlled-release fertilizers (S-CRF), and more particularly to a microelement amino acid chelate-urea formaldehyde (UF) slow-release fertilizer and a method for preparing the same by reactive extrusion. The microelement amino acid chelate-UF slow-release fertilizer includes a biodegradable UF polymer and a microelement amino acid chelate. The macromolecular chains of the biodegradable UF polymer interpenetrate in the cross-linked network structure of the chelate, so as to form a polymer composite with a semi-interpenetrating network structure.

Classes IPC  ?

• C05C 9/02 - Engrais contenant de l'urée ou ses composés contenant des produits de condensation uréeformaldéhyde
• C05G 3/40 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur le dosage de l’engrais ou sur sa vitesse de libérationMélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la solubilité
• C05G 5/12 - Granulés ou flocons

Abrégé

A high wear-resistant graphene-modified natural rubber and a preparation thereof. The graphene-modified natural rubber is prepared from 100 parts by weight of a modified natural rubber blend, A parts by weight of modified graphene oxide, 35-65 parts by weight of wear-resistant carbon black, 5-20 parts by weight of a wear-resistant filler, 2-7 parts by weight of zinc oxide, 1-4 parts by weight of stearic acid, 1-4 parts by weight of poly(1,2-dihydro-2,2,4-trimethylquinoline), 1-4 parts by weight of N-isopropyl-N′-phenyl-p-phenylenediamine, 1-4 parts by weight of a vulcanization accelerator, 1-2 parts by weight of sulphur, 0.1-3 parts by weight of a compatibilizer and 1-7 parts by weight of rubber processing oil, where A is greater than 0 and equal to or less than 3.

Classes IPC  ?

• C08F 36/08 - Isoprène
• C08K 3/04 - Carbone
• C08K 3/22 - OxydesHydroxydes de métaux
• C08K 5/09 - Acides carboxyliquesLeurs sels métalliquesLeurs anhydrides
• C08K 5/3465 - Cycles à six chaînons condensés avec des carbocycles
• C08K 5/18 - AminesComposés d'ammonium quaternaire avec des groupes amino liés aromatiquement
• C08K 3/06 - Soufre
• C08K 9/04 - Ingrédients traités par des substances organiques
• C08K 5/44 - Sulfénamides
• C08F 36/06 - Butadiène
• C08K 5/14 - Peroxydes
• C08J 3/22 - Formation de mélanges de polymères avec des additifs, p. ex. coloration en utilisant les techniques des charges mères

Abrégé

The present invention relates to the technical field of molds for plastic molding, and disclosed are a high-precision and high-efficiency injection mold for a high-aspect-ratio double-layer cylindrical part, and a molding method using same. The injection mold comprises a support base plate (1). A movable mold fixing frame (2) and a movable mold base plate (3) are sequentially mounted at the middle of a lower surface of the support base plate (1) by means of positioning screws (31). The center of an upper surface of the support base plate (1) is provided with a lower core mold accommodating cavity, which is adapted to mount a lower core mold (14). The lower core mold (14) is provided with a lower semicircular cavity (141), which is adapted to accommodate an outer die barrel (20); a right side of the lower semicircular cavity (141) is open, and a left side of the lower semicircular cavity is provided with a lower half cavity bottom (142); the lower half cavity bottom (142) is provided with a lower semicircular hole (143), which is adapted to accommodate an inner die rod (21), and an upper surface of the lower core mold (14) is provided with a positioning protrusion (144), a lower half feeding groove (145) and a remaining groove (146). The present invention has a rational design and has a good practical application value.

Classes IPC  ?

• B29C 45/26 - Moules
• B29C 45/33 - Moules comportant des éléments de moule transversalement mobiles, p. ex. radialement

Abrégé

A lightweight bulletproof and anti-explosion multiphase composite armor material based on a high-toughness heterogeneous interface layer and a bonding method. A main structure of the multiphase composite armor material comprises a carbon fiber composite material crack arrest layer (1), a ceramic bullet breaking layer (2), an ultra-high molecular weight polyethylene fiber composite material energy absorption layer (3) and a carbon fiber composite material support layer (4) which are sequentially arranged inwards from a bullet facing surface, and any two adjacent layers are bonded together by a high-toughness heterogeneous interface adhesive film layer (5). The problems of large density, serious back protrusion and insufficient continuous shooting resistance of a current bulletproof and anti-explosion armor material can be solved. According to the bonding method, the bonding strength of the heterogeneous interface can be effectively enhanced, and the critical energy release rate is increased; moreover, the protection level of the protective armor on the penetrative damage and the non-penetrative damage is improved. In addition to bulletproof and anti-explosion armors, the bonding method can be applied to a plurality of high-speed impact resistant structures such as high-speed train bodies, various aircraft shells, and individual soldier protection equipment.

Classes IPC  ?

• F41H 5/04 - Structure des plaques composées de plus d'une couche

Abrégé

A method for preparing graphene/natural rubber with simultaneously improved mechanical property, heat conduction and wear resistance, comprising: forming graphene oxide loaded with nano silicon dioxide by means of electrostatic interaction between silicon dioxide and graphene oxide; adding graphene oxide loaded with nano silicon dioxide into natural latex; preparing a graphene master batch by using an aqueous phase synergistic coagulation process; and obtaining graphene/natural rubber by means of a mechanical blending method and a vulcanization process. The electrostatic interaction between silicon dioxide and graphene oxide is a dynamic acting force which not only reinforces the crosslinked network structure of the graphene/natural rubber composite material and significantly increases the crosslinking density, but also enables the graphene filler to entangle a large amount of rubber molecular chains and enhances the interface interaction between the graphene and the rubber matrix in the dynamic movement process of the rubber, thereby improving the mechanical property, the heat conduction and the wear resistance simultaneously.

Classes IPC  ?

• C08J 3/24 - Réticulation, p. ex. vulcanisation, de macromolécules
• C08L 7/00 - Compositions contenant du caoutchouc naturel
• C08K 9/12 - Ingrédients adsorbés
• C08K 9/06 - Ingrédients traités par des substances organiques par des composés contenant du silicium
• C08K 3/36 - Silice
• C08K 3/04 - Carbone

Abrégé

A device and a method for the industrialized continuous and simplified preparation of a urea-formaldehyde precise-release nitrogen fertilizer or a urea-formaldehyde-based slow- and controlled-release multi-nutrient fertilizer. By means of various regulation and control means such as self-polycondensation of hydroxymethyl urea or copolycondensation of hydroxymethyl urea and a modifying molecule during the reactive extrusion process, an accurate regulation and control of the nutrient release rate of a urea-formaldehyde precise-release nitrogen fertilizer or a urea-formaldehyde-based slow- and controlled-release multi-nutrient fertilizer is realized. The preparation device is simple and efficient, and the preparation method is stable and easy to control, which are convenient for achieving large-scale batch continuous production. In addition, the preparation system and method have good mobility, whereby a suitable modifying substance can be selected according to the growth cycles of different crops, so as to prepare a urea-formaldehyde precise-release nitrogen fertilizer or a urea-formaldehyde-based slow- and controlled-release multi-nutrient fertilizer that is matched with the nutrient requirements of the whole crop growth cycle.

Classes IPC  ?

• B01J 19/18 - Réacteurs fixes avec éléments internes mobiles
• B01J 4/00 - Dispositifs d'alimentationDispositifs de commande d'alimentation ou d'évacuation
• B01J 2/20 - Procédés ou dispositifs pour la granulation de substances, en généralTraitement de matériaux particulaires leur permettant de s'écouler librement, en général, p. ex. en les rendant hydrophobes en exprimant une substance à travers un crible et fragmentation de l'extrudat
• F26B 21/10 - Commande, p. ex. régulation des paramètres de l'alimentation en gaz de la températureCommande, p. ex. régulation des paramètres de l'alimentation en gaz de la pression
• C05C 9/02 - Engrais contenant de l'urée ou ses composés contenant des produits de condensation uréeformaldéhyde
• C05G 3/40 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur le dosage de l’engrais ou sur sa vitesse de libérationMélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la solubilité
• C05G 5/12 - Granulés ou flocons

Abrégé

The present invention relates to the field of graphene preparation, and in particular to industrial continuous preparation equipment and process for graphene powder capable of being directly dispersed in an organic system, for use in obtaining the graphene powder capable of being directly dispersed in the organic system, which is composed of reduced graphene oxide and oil-soluble polymer micro-nano particles tightly coated on the reduced graphene oxide, wherein a part of the oil-soluble polymer micro-nano particles are, by means of a π-π conjugation effect, tightly combined with hexagonal honeycomb lattices formed by sp2 hybrid orbits in the reduced graphene oxide, and the other part of the oil-soluble polymer micro-nano particles are combined with oxygen-containing functional groups in the reduced graphene oxide by means of a covalent effect. On one hand, the surface of the reduced graphene oxide can be tightly coated with the oil-soluble polymer micro-nano particles, such that agglomeration of the reduced graphene oxide in a spray drying process is effectively prevented. On the other hand, the dried graphene powder can be easily dispersed after being transferred into the organic system, and the dispersion stability can be kept for a long time.

Classes IPC  ?

• B01F 33/82 - Combinaisons de mélangeurs dissemblables
• B01F 23/80 - Post-traitement du mélange
• B01J 19/18 - Réacteurs fixes avec éléments internes mobiles
• C08F 120/14 - Esters méthyliques
• C08F 2/26 - Polymérisation en émulsion utilisant des agents émulsifiants anioniques

Abrégé

A method for preparing a graphene-containing ultra-fine powdered natural rubber masterbatch, including: mixing a diluted graphene oxide dispersion with an anionic surfactant to obtain a modified graphene oxide dispersion; mixing the modified graphene oxide dispersion with a natural rubber latex suspension to obtain a mixed emulsion; and subjecting the mixed emulsion to spray drying to obtain the ultra-fine powdered natural rubber masterbatch with a particle size of less than 5 μm. This application further provides a method for preparing a graphene-modified natural rubber nanocomposite, including: mixing the ultra-fine powdered natural rubber masterbatch with natural rubber block, and carbon black.

Classes IPC  ?

• B01J 2/06 - Procédés ou dispositifs pour la granulation de substances, en généralTraitement de matériaux particulaires leur permettant de s'écouler librement, en général, p. ex. en les rendant hydrophobes par division du produit liquide en gouttelettes, p. ex. par pulvérisation, et solidification des gouttelettes en milieu liquide

Abrégé

2-GO/NR masterbatch is subjected to mechanical blending and vulcanization to obtain the graphene/NR composite.

Classes IPC  ?

• C08K 3/36 - Silice
• C08L 7/00 - Compositions contenant du caoutchouc naturel
• C08K 3/04 - Carbone

Abrégé

An injection mold for a high-aspect-ratio double-layer cylindrical plastic part and a molding method using the same. The injection mold includes a support base plate. A movable mold fixing frame and a movable mold base plate are arranged at the middle of a lower surface of the support base plate through positioning screws. A lower core mold is matchingly provided at a center of an upper surface of the support base plate, and is provided with a lower semicircular cavity for accommodating an outer die barrel. One side of the lower semicircular cavity is open, and the other side is provided with a first end wall which is provided with a lower semicircular notch for an inner die rod to pass through. An upper surface of the lower core mold is provided with a positioning protrusion, a lower feeding groove, and a remaining groove.

Classes IPC  ?

• B29C 45/26 - Moules
• B29C 45/16 - Fabrication d'objets multicouches ou polychromes
• B29C 45/73 - Chauffage ou refroidissement du moule
• B29L 9/00 - Produits stratifiés

Abrégé

formaldehyde-based polymer composite is coated on a surface of the biodegradable polymer fabric, and is embedded in meshes of the biodegradable polymer fabric. There is intermolecular hydrogen-bond interaction between the biodegradable urea-formaldehyde-based polymer composite and the biodegradable polymer fabric.

Classes IPC  ?

• C05C 9/02 - Engrais contenant de l'urée ou ses composés contenant des produits de condensation uréeformaldéhyde
• C05G 5/30 - Engrais caractérisés par leur forme en couches ou enrobés, p. ex. enrobages anti-poussière
• C05G 3/40 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur le dosage de l’engrais ou sur sa vitesse de libérationMélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la solubilité
• C05G 3/80 - Conditionneurs de sol
• C05G 1/00 - Mélanges d'engrais faisant partie individuellement de différentes sous-classes de
• C05B 7/00 - Engrais à base essentielle d'orthophosphates alcalins ou d'ammonium
• C09K 17/16 - Substances pour conditionner ou stabiliser les sols contenant uniquement des composés organiques appliqués sous une forme physique autre qu'une solution ou un coulis, p. ex. sous forme de plaquettes ou de granulés
• C09K 17/28 - Polymères de condensation urée-aldéhyde
• D06M 15/564 - Polyurées, polyuréthanes ou autres polymères comportant des liaisons uréide ou uréthaneLeurs précurseurs précondensés

Abrégé

A method for continuously preparing graphene powder directly dispersed in an organic system, including: mixing an aqueous graphene oxide dispersion, an emulsifier and an oil-soluble monomer followed by pH adjustment and dispersing to obtain a pre-emulsified dispersion; subjecting the pre-emulsified dispersion to an emulsion polymerization reaction in the presence of an initiator; introducing a reducing agent to reduce graphene oxide; and subjecting the reaction mixture after emulsion polymerization to spray drying to obtain the graphene powder. Equipment used in the preparation method is also provided herein.

Classes IPC  ?

• C08K 3/04 - Carbone
• C08F 120/14 - Esters méthyliques
• C08J 3/12 - Pulvérisation ou granulation
• C08J 3/205 - Formation de mélanges de polymères avec des additifs, p. ex. coloration en présence d'une phase liquide

Abrégé

A vulcanizing agent-modified graphene prepared through an in-situ chemical deposition process and a controllable crosslinked natural rubber composite containing the same. In the preparation of the vulcanizing agent-modified graphene, graphene oxide is coated on a spherical thermal-conductive functional particle through the chemical bonding to obtain a 3D graphene particle; and a vulcanizing agent is adsorbed on the 3D graphene particle through π-π conjugation by an in-situ chemical deposition process to obtain a vulcanizing agent-modified graphene particle. Further, the vulcanizing agent-modified graphene particle is mixed with natural rubber latex, and undergoes synergistic coagulation in water to form a graphene masterbatch, which is further processed into the controllable crosslinked natural rubber composite by adding a certain amount of natural rubber block, rubber additive and reinforcing filler.

Classes IPC  ?

• C08K 3/04 - Carbone
• B60C 1/00 - Pneumatiques caractérisés par la composition chimique, la disposition ou le mélange physique de la composition
• C08J 3/22 - Formation de mélanges de polymères avec des additifs, p. ex. coloration en utilisant les techniques des charges mères
• C08K 3/06 - Soufre
• C08K 9/06 - Ingrédients traités par des substances organiques par des composés contenant du silicium

Abrégé

This disclosure relates to slow- and controlled-release fertilizers, and more particularly to a device and a method for industrialized continuous and simplified preparing a urea-formaldehyde slow-release nitrogen fertilizer or a urea-formaldehyde-based slow- and controlled-release multi-nutrient fertilizer. Hydroxymethylurea is produced through the reaction extrusion of urea and formaldehyde. Through the self-ploycondensation of the hydroxymethylurea or the co-polymerization of the hydroxymethylurea and a modifier in a reactive extruder, the urea-formaldehyde slow-release nitrogen fertilizer or the urea-formaldehyde-based slow- and controlled-release multi-nutrient fertilizer is prepared.

Classes IPC  ?

• C05C 9/00 - Engrais contenant de l'urée ou ses composés
• C05C 9/02 - Engrais contenant de l'urée ou ses composés contenant des produits de condensation uréeformaldéhyde
• C05G 5/12 - Granulés ou flocons

Abrégé

A method of producing a thermoplastic starch by an in-situ reactive extrusion plasticization process and a method for preparing a starch/polymer blend by an in-situ reactive extrusion plasticization and compatibilization process. In the method, a plasticizer reaction precursor (or a plasticizing compatibilizer reaction precursor) is mixed with starch to adhere to the surface of the starch or enter the starch to break the intermolecular and intramolecular hydrogen bonds of the starch. Then a mixture of the plasticizer reaction precursor (or the plasticizing compatibilizer reaction precursor) and starch is subjected to extrusion to produce the thermoplastic starch (or the starch/polymer blend), where the reaction precursor undergoes an in-situ reaction on the surfaces of the starch and in the starch to form a macro-molecular plasticizer (or a plasticizing compatibilizer) to plasticize starch or provide plasticizing and compatibilizing effect on the starch/polymer blend.

Classes IPC  ?

• C08J 3/18 - Plastification de composés macromoléculaires
• C08J 3/00 - Procédés pour le traitement de substances macromoléculaires ou la formation de mélanges

Abrégé

A method for preparing a graphene masterbatch by an aqueous phase synergistic aggregating precipitating process and a method for molding a long-lifespan tire for a loading wheel of a heavy-duty vehicle. In this application, a graphene oxide aqueous dispersion and natural rubber latex are taken as raw materials, and subjected to co-precipitating in a water medium to prepare a high-graphene content masterbatch with individual components evenly dispersed. The graphene masterbatch is further subjected to two-stage high-temperature mechanical blending with a natural rubber block to achieve the uniform dispersion of graphene in a rubber composites.

Classes IPC  ?

• C08K 3/04 - Carbone
• C08J 3/22 - Formation de mélanges de polymères avec des additifs, p. ex. coloration en utilisant les techniques des charges mères

Abrégé

Disclosed is a method for preparing a nitrogen-rich or nutritious straw-based slow-release fertilizer through In-Situ straw modification/reactive extrusion integrated continuous process. In the method, the liquid reaction precursor of a nitrogen-containing biodegradable slow-release fertilizer is mixed with crop straw to obtain a reaction mixture, or the liquid reaction precursor of a nitrogen-containing biodegradable slow-release fertilizer, crop straw and a soluble fertilizer are mixed to obtain a reaction mixture. The reaction mixture is subjected to extrusion in a screw extruder to produce the nitrogen-rich or nutritious straw-based slow-release fertilizer.

Classes IPC  ?

• C05C 9/02 - Engrais contenant de l'urée ou ses composés contenant des produits de condensation uréeformaldéhyde
• C05G 3/40 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur le dosage de l’engrais ou sur sa vitesse de libérationMélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la solubilité

Abrégé

2 absorption vessel connected in sequence through connecting pipes. A top of the hollow leaching device is provided with an end cover. An external water distributor filled with a leaching solution and a mechanical stirring device is arranged above the end cover. The external water distributor is in communication with an inner cavity of the hollow leaching device through a pipeline. A stirring shaft of the mechanical stirring device extends into the inner cavity. A stirring shaft is provided with a stirring paddle.

Classes IPC  ?

• G01N 33/44 - RésinesMatières plastiquesCaoutchoucCuir
• G01N 1/24 - Dispositifs d'aspiration
• G01N 1/38 - Dilution, dispersion ou mélange des échantillons
• C12M 1/00 - Appareillage pour l'enzymologie ou la microbiologie
• C12M 1/02 - Appareillage pour l'enzymologie ou la microbiologie avec des moyens d'agitationAppareillage pour l'enzymologie ou la microbiologie avec des moyens d'échange de chaleur
• C12M 1/12 - Appareillage pour l'enzymologie ou la microbiologie avec des moyens de stérilisation, filtration ou dialyse
• C12M 1/04 - Appareillage pour l'enzymologie ou la microbiologie avec des moyens d'introduction de gaz

Abrégé

A gradient electrically conductive-uniform thermally conductive dual network structure-based electromagnetic shielding polymer composite with low reflection and high absorption and a preparation method thereof. The electromagnetic shielding polymer composite includes a gradient conductive carbon nanotube network with a vertically oriented cell structure and a uniformly thermally conductive hexagonal boron nitride/carbon nanotube network constructed by the hexagonal boron nitride dispersed uniformly in the carbon nanotube network and the gradient carbon nanotube network. The gradient electrically conductive carbon nanotube network and the uniformly thermally conductive hexagonal boron nitride/carbon nanotube network form a composite synergistic dual function network structure so as to make the electromagnetic shielding polymer composite have a low reflection and high absorption and excellent thermal conductivity.

Classes IPC  ?

• H05K 9/00 - Blindage d'appareils ou de composants contre les champs électriques ou magnétiques
• C08K 3/04 - Carbone
• C08K 3/38 - Composés contenant du bore
• B29C 39/00 - Moulage par coulée, c.-à-d. en introduisant la matière à mouler dans un moule ou entre des surfaces enveloppantes sans pression significative de moulageAppareils à cet effet
• C08K 9/00 - Emploi d'ingrédients prétraités
• C08L 75/04 - Polyuréthanes
• C08L 83/06 - Polysiloxanes contenant du silicium lié à des groupes contenant de l'oxygène
• B29K 75/00 - Utilisation de polyurées ou de polyuréthanes comme matière de moulage
• B29K 83/00 - Utilisation de polymères contenant dans la chaîne principale uniquement du silicium avec ou sans soufre, azote, oxygène ou carbone comme matière de moulage
• B82Y 30/00 - Nanotechnologie pour matériaux ou science des surfaces, p. ex. nanocomposites
• B82Y 40/00 - Fabrication ou traitement des nanostructures