337 results about "Rubber technology" patented technology

The invention belongs to the technical field of rubber, and discloses bio-based reinforced resin, a preparation method, a rubber composition and application. The bio-based reinforced resin is prepared from lignin, cashew nut shell oil, rosin or derivatives thereof and a vegetable fat modifier, the biochar content is up to 100%, the Mooney viscosity and MH of a sizing material are obviously reduced, and the bio-based reinforced resin has the advantages of long scorching time and high vulcanization speed in the sizing material application process.

The invention provides a silicone rubber aging test method and device, electronic equipment and a storage medium, and relates to the technical field of silicone rubber. The silicone rubber aging test method comprises the following steps: according to a preset actual application environment of target silicone rubber, determining cycle test parameters of preset aging factors corresponding to the actual application environment; determining an acceleration factor of the aging test according to the cycle test parameters and a preset calculation mode; performing thermogravimetric analysis on the target silicone rubber according to the cycle test parameters to determine mass loss parameters of the target silicone rubber; and determining an aging test result according to the elongation at break, the acceleration factor and the mass loss parameter of the target silicone rubber. According to the method, the aging performance of the target silicone rubber is integrally and comprehensively evaluated by combining multiple indexes such as the elongation at break, the acceleration factor and the quality loss parameter, and the test efficiency is improved.

The invention provides a method for reducing the rubber crack propagation rate and a tire, and relates to the technical field of tire rubber.The method for reducing the rubber crack propagation rate comprises the steps that the maximum tearing energy in an application scene is obtained; determining the addition amount of organic polysulfide and sulfur in a vulcanizing agent according to the maximum tearing energy; and mixing the vulcanizing agent with the raw materials to obtain the target rubber material. When the maximum value of the tearing energy is large, the organic polysulfide is added into the sulfur, the organic polysulfide contains a plurality of thioalkyl chain segments, and in the vulcanization process, flexible alkyl chains can be connected into rubber macromolecules to form a composite cross-linked network structure which is more stable and higher in strength, so that the breaking tensile strength and the tearing strength of tire rubber are improved, and the service life of the tire rubber is prolonged. And the expansion rate of cracks can be reduced while bearing relatively high tearing energy, so that the service life is prolonged.

The invention discloses room-temperature end-capped silicone rubber based on 107 glue and a preparation method of the room-temperature end-capped silicone rubber, and relates to the technical field of silicone rubber. The preparation method comprises the following steps: step 1, uniformly mixing 107 glue, isobornyl silane and a catalyst in a nitrogen atmosphere; stirring at room temperature for 1-1.5 hours to obtain room-temperature end-capping base glue; and 2, uniformly stirring and mixing the room-temperature end-capped base rubber, dimethyl silicone oil, the modified filler, methyltrimethoxysilane, gamma-aminopropyltriethoxysilane and an organic tin catalyst in a nitrogen atmosphere, and finally vacuumizing and stirring to obtain the room-temperature end-capped silicone rubber. According to the invention, the prepared room-temperature end-capped silicone rubber has excellent mechanical properties and stability.

The invention relates to the technical field of thermoplastic vulcanizates, and discloses a TPV sealing material and a preparation method thereof. The TPV sealing material is prepared from the following raw materials in parts by weight: 10 to 30 parts of PP resin, 40 to 60 parts of EPDM rubber, 10 to 20 parts of polylactic acid, 15 to 25 parts of filler, 0.5 to 1.5 parts of vulcanizing agent, 0.3 to 1.5 parts of vulcanization accelerator, 5 to 10 parts of compatilizer, 1 to 4 parts of modified heat stabilizer and 0.5 to 3 parts of modified anti-aging agent. Through preparation of the modified heat stabilizer, structural damage or sealing failure caused by thermal aging of a system can be reduced, and the service life of the sealing material is greatly prolonged; the preparation of the modified anti-aging agent can effectively resist the corrosion of environmental factors such as thermal oxidation and ozone to the system, and prevent the problems of cracking, hardening, elasticity attenuation, sealing failure and the like of the sealing material after long-term use.

The invention relates to the technical field of rubber, and discloses low-temperature-resistant rare earth butadiene rubber and a preparation method thereof. Phosphorus-containing quaternary ammonium salt modified polyurethane, polyethoxylene ether modified phenolic resin, rare earth butadiene rubber and sulfur are added into an internal mixer to be mixed and then vulcanized, and the low-temperature-resistant rare earth butadiene rubber is obtained. In the phosphorus-containing quaternary ammonium salt modified polyurethane, silicon-oxygen bonds enable the rubber to maintain stability at low temperature, so that the low-temperature-resistant effect of the rubber is improved; polyurethane and a rubber molecular chain form an interpenetrating polymer network, so that the mechanical property of the rubber is improved; due to the soft segment chain of polyurethane, the rubber has better toughness at low temperature, and the low temperature resistance of the rubber is improved; an ether bond in polyoxyethylene ether has flexibility and stability, so that the rubber is not easy to crystallize or cure at low temperature; phosphorus, silicon and sulfur elements are used together to generate a synergistic flame-retardant effect, so that the flame retardance of the rubber is improved; the phenolic resin plays a reinforcing role in the rubber, so that the mechanical property of the rubber is improved.

The present application relates to the technical field of colored tire rubber, and specifically discloses an anti-discoloration rubber composition for colored tires and its preparation method. An anti-discoloration rubber composition for colored tires is prepared by first preparing modified colored silica, then using solution-polymerized styrene-butadiene rubber, natural rubber, and EPDM as the rubber matrix, adding modified colored silica for coloring and reinforcement, and then adding polydicyclopentadiene resin, titanium dioxide, YDH-151 silane coupling agent, zinc oxide, stearic acid, sulfur and TBBS accelerator, protective wax, AFS / LG antioxidant, antistatic agent and other auxiliary agents to prepare the anti-discoloration rubber composition for colored tires. The anti-discoloration rubber composition for colored tires prepared in this application has the advantages of stable color, aging resistance, good tensile strength, strong wear resistance, and strong weather resistance.

The invention relates to the technical field of rubber, and relates to a wear-resistant rubber composite material and a preparation method thereof. The wear-resistant rubber composite material is prepared from the following components in parts by weight: 100 parts of a rubber matrix, 30 to 60 parts of multi-stage core-shell structure composite filler, 10 to 15 parts of carbon black, 1.0 to 2.5 parts of a vulcanizing agent, 0.5 to 2.0 parts of an accelerant, 3 to 6 parts of an active agent and 1 to 3 parts of an anti-aging agent, the multi-stage core-shell structure composite filler sequentially comprises a rigid inorganic nano-particle core, a rigid inorganic nano-particle core and a rigid inorganic nano-particle core from inside to outside, the core is coated with the first shell layer, the first shell layer is a mesoporous silica layer, and a silane coupling agent containing sulfur groups is modified in the mesoporous silica layer; and the second shell layer is coated outside the first shell layer and is a hyperbranched polymer layer. According to the wear-resistant rubber composite material provided by the invention, the comprehensive mechanical property and wear resistance of the rubber composite material are improved.

The invention provides a metal rubber fan-shaped part, a knuckle bearing shock absorber and a preparation method of the metal rubber fan-shaped part, and relates to the technical field of metal rubber, the thickness and n of the metal rubber fan-shaped part meet the following formulas (1) and (2): r1 * (1-cos (360 degrees / 2n)) < = gamma * H (1); h = r1-r2 (2); wherein gamma is equal to 1 / 4; h is the thickness of the metal rubber sector, and the unit is mm; r1 is the outer diameter of the metal rubber sector, and the unit is mm; r2 is the inner diameter of the metal rubber fan-shaped piece, and the unit is mm. Through reasonable design, the metal rubber ring is designed into a plurality of equal parts, heat treatment is carried out on the metal wires, two different molds are adopted for carrying out secondary forming on the blanks made of the metal wires, and therefore the metal rubber fan-shaped piece with the high bearing capacity and the anti-fatigue characteristic is obtained; and meanwhile, the situation that the surface of a high-density fan-shaped piece is prone to flying wires when the high-density fan-shaped piece is formed is avoided.

The invention discloses silicone rubber and a preparation method thereof, and belongs to the technical field of silicone rubber, and the silicone rubber is prepared from the following raw materials: raw vinyl silicone rubber, zinc acrylate, a platinum catalyst, a hydrogen-containing silicone oil cross-linking agent and silicon carbide nanowires. According to the invention, a covalent network based on raw vinyl silicone rubber is constructed in the silicone rubber, and zinc acrylate and silicon carbide nanowires form an ionic network, so that the double-network structure not only can improve the technical problem of high probability of rubber overflow in the preparation process of the silicone rubber, but also can enable the silicone rubber to obtain better mechanical properties.

The invention relates to the technical field of liquid silicone rubber, in particular to high-refractive-index low-haze addition type liquid silicone rubber and a preparation method thereof, and the high-refractive-index low-haze addition type liquid silicone rubber is prepared from vinyl silicone oil, a catalyst, an inhibitor, a cross-linking agent, hydrophobic white carbon black, a white carbon black surface treating agent and the like. According to the method, by regulating and controlling the surface state of the white carbon black and the refractive index of the silicone oil, the addition type liquid silicone rubber with high refractive index, high light transmittance and low haze at the same time is realized, and the addition type liquid silicone rubber is good in mechanical property and fluidity, can adapt to continuous extrusion production, and is suitable for large-scale production. After vulcanization, the Shore A hardness is 50-53, the light transmittance is 94% or above, the haze is lower than 3%, the refractive index reaches 1.54 or above, and the polyurethane resin can be applied to the fields of optical devices, LED packaging and the like.

The invention relates to MXene / CNTs self-assembled conductive rubber and a preparation method thereof, and belongs to the technical field of conductive rubber. Through treatment, the CNTs have positive electricity and can be subjected to electrostatic self-assembly with MXene with negative electricity, the assembled conductive filler can be further assembled with latex particles of rubber through electrostatic interaction, the conductive filler and the latex particles are gelatinized together to prepare conductive rubber, and the conductive functional filler can form a good conductive network in a rubber matrix, so that the conductivity of the conductive rubber is improved. Therefore, the sensitivity, the stability and the durability of the conductive rubber are improved.

The invention discloses natural rubber with high conductivity and a preparation method thereof, and belongs to the technical field of conductive rubber.The natural rubber is prepared from 100 parts of natural latex, 5-40 parts of conductive filler, 0.5-20 parts of cellulose, 1-10 parts of zinc oxide, 0.5-5 parts of sulfur, 0.5-5 parts of accelerant, 1-5 parts of stearic acid, 0.05-1 part of potassium hydroxide, 0.05-1 part of dispersing agent NF and 0.5-20 parts of casein; the natural rubber with high conductivity is obtained through preparation of a natural latex solution, cellulose treatment and preparation of a cellulose solution, mixing of a conductive filler and the cellulose solution to prepare a suspension, mixing of the suspension and the natural latex, solidification forming by a low-temperature freezing method, and hot-pressing vulcanization. The method has the advantages of being simple in process, low in cost, environmentally friendly and the like, and the produced composite material has good electrical properties, flexibility and mechanical properties.

The utility model relates to the technical field of vulcanized rubber, in particular to a rubber vulcanizing machine for producing rubber products, which comprises a vulcanizing machine body, supporting legs are arranged at four corners of the bottom end of the vulcanizing machine body, a feeding pipe is arranged on one side of the top end of the vulcanizing machine body, and a first motor is arranged in the center of the top end of the vulcanizing machine body. The output end of the first motor penetrates through the top wall of the vulcanizing machine body and is provided with a rotating shaft, the outer wall of the rotating shaft is provided with a stirring rod, a pump body conveys a vulcanizing agent into an annular pipe in a vulcanizing barrel through an agent conveying pipe, and then the vulcanizing agent is sprayed through a spraying head at the bottom end of the annular pipe; the stirring rod drives the heating rod to rotate at a constant speed under the driving of the first motor, so that the uniform heating of a rubber material is ensured, and the heating wire in the heating rod generates heat, so that the interior of the vulcanizing machine body is stably maintained in a temperature and pressure range required by rubber vulcanization, and the rubber raw material and a vulcanizing agent are fully and uniformly mixed.

The invention relates to the technical field of sealing rubber, and particularly discloses an anti-aging sealing rubber material and a preparation process thereof, and anti-aging modified styrene-butadiene rubber, butadiene rubber, white carbon black, zinc oxide, stearic acid, load accelerator lignin and other rubber additives are mixed into the anti-aging sealing rubber material in a mixing and vulcanizing manner. The prepared aging-resistant sealing rubber material has good tensile strength and elongation at break, also has excellent aging resistance, and can solve the problem that the aging resistance of the sealing rubber material is not good enough.

The invention discloses a preparation method of a flame-retardant rubber material for vehicles, and belongs to the technical field of flame-retardant rubber. Comprising the following raw materials in parts by weight: 60-70 parts of nitrile rubber, 22-30 parts of ethylene propylene diene monomer, 5-15 parts of a modifier, 3-5 parts of zinc oxide, 0.1-0.3 part of an initiator, 2-4 parts of a lubricant, 4-6 parts of sulfur and 0.5-1.5 parts of a vulcanization accelerator. Nitrile rubber is used as a matrix, so that the material is endowed with excellent oil resistance and good mechanical property; the oxidation resistance of the material can be enhanced by introducing the ethylene propylene diene monomer; wherein the modifier enhances the flame retardance, heat resistance, oxidation resistance and a certain degree of mechanical properties of the material, and the properties are long-lasting and stable; therefore, the prepared rubber material is high in oil resistance and good in mechanical property, has stable and efficient flame retardance, heat resistance and oxidation resistance, and has important application value in the technical field of flame-retardant rubber.

The invention discloses carbon nanotube modified conductive fluororubber and a preparation method thereof, and belongs to the technical field of conductive rubbers, the carbon nanotube modified conductive fluororubber comprises the following raw materials: fluororubber, carbon nanotubes, metal oxide powder, carbon black, a silane coupling agent, an anti-aging agent, a plasticizer, stearic acid, a vulcanizing agent and an accelerant. The preparation method comprises the following steps: cutting the fluororubber into blocks, removing impurities, uniformly mixing with the plasticizer, the anti-aging agent and the accelerant, then feeding together with the remaining raw materials, and carrying out mixing, plastication, vulcanization, cutting and molding to obtain the carbon nanotube modified conductive fluororubber. The fluororubber is modified by using the carbon nanotubes, so that the conductivity is improved, and the problem of insufficient conductivity in the prior art can be solved. Meanwhile, the method can maintain the excellent mechanical performance of the conductive fluororubber, and the practicability and reliability of the conductive fluororubber are further enhanced.

The invention relates to the technical field of colored tire rubber, and particularly discloses an anti-tarnishing rubber composition for a colored tire and a preparation method of the anti-tarnishing rubber composition. According to the anti-discoloration rubber composition for the colored tire, the modified colored white carbon black is firstly prepared, then the solution polymerized styrene-butadiene rubber, the natural rubber and the ethylene propylene diene monomer are used as rubber matrixes, and the modified colored white carbon black is added for coloring and reinforcing; and adding auxiliary agents such as polydicyclopentadiene resin, titanium dioxide, a YDH-151 silane coupling agent, zinc oxide, stearic acid, sulfur, a TBBS accelerator, protective wax, an AFS / LG anti-aging agent, an antistatic agent and the like to prepare the anti-tarnishing rubber composition for the colored tire. The anti-discoloration rubber composition for the colored tire has the advantages of being stable in color, resistant to aging, good in stretchability, high in wear resistance and high in weather resistance.

The invention provides acid and alkali resistant and high temperature resistant room temperature vulcanized silicone rubber and a preparation method thereof, and belongs to the technical field of silicone rubber. The acid and alkali resistant and high temperature resistant room temperature vulcanized silicone rubber comprises a component A and a component B which are mixed according to a mass ratio of 10: 1, and the component A comprises 100 parts of a, w-dihydroxy polydimethylphenyl siloxane, 10-20 parts of white carbon black, 30-40 parts of silica powder and 2-5 parts of a heat resistant additive; the component B comprises 100 parts of dimethyl silicone oil, 200 parts of black paste, 100-150 parts of a cross-linking agent, 25-50 parts of a coupling agent and 15-25 parts of a catalyst; through cooperative use of a, w-dihydroxy polydimethylphenyl siloxane, a heat-resistant additive treated by silazane, fumed silica treated by silazane, silica powder and the like, it is guaranteed that the silicone rubber product has the characteristics of acid and alkali resistance and high temperature resistance, and actual requirements are met. In addition, the related preparation method is simple and convenient to operate, and does not need harsh conditions.

The invention discloses silicone rubber for a brain-computer interface and a preparation method thereof, and relates to the technical field of silicone rubber, the silicone rubber comprises the following components by weight: 60-80 parts of methyl vinyl silicone rubber, 3.5-5 parts of modified boron nitride, 2.5-5 parts of a flame retardant, 1.5-3 parts of an antibacterial agent, and 8-12 parts of a vulcanizing agent. According to the silicone rubber for the brain-computer interface and the preparation method thereof, boron nitride is modified, so that the heat dissipation capability of the silicone rubber can be effectively improved, heat dissipation of electronic elements is facilitated, and overheating damage is avoided; the modified boron nitride has improved dispersibility, is more uniformly distributed in the silicone rubber, prevents agglomeration, is convenient for processing and molding, and increases the viscosity of the silicone rubber, thereby enhancing the cohesion of the silicone rubber; meanwhile, the flexibility of the material can be well improved, the brittleness of the silicone rubber is reduced, and the electronic silicone rubber can better maintain physical properties under different environmental conditions; the thermal stability and the chemical stability of the material can be improved, and the performance of the silicone rubber can be kept stable in a complex use environment.

The invention belongs to the technical field of rubber, and particularly relates to a rubber composition, a preparation method thereof and a truck tire using the rubber composition. The rubber composition is prepared from the following components in parts by mass: 100 parts of diene rubber, 0.2 to 1.5 parts of hydrazide compound, 0.2 to 1.5 parts of pyrazolone compound, 0 to 30 parts of liquid rubber, 20 to 120 parts of reinforcing filler, 0 to 10 parts of silane coupling agent, 2 to 10 parts of vulcanization activator, vulcanization accelerator, vulcanizing agent, antioxidant, resin and plasticizer. The heat generation of the tire can be obviously reduced, and meanwhile, the cutting resistance and tear resistance of the tire are improved, so that the damage resistance of the truck tire is improved.

The invention discloses an enhanced fluorinated silicone rubber composite material and a preparation method thereof in the technical field of rubber, and the enhanced fluorinated silicone rubber composite material is prepared from the following components in parts by weight: 60-70 parts of methyl vinyl cyclotetrasiloxane, 20-30 parts of methyl trifluoropropyl cyclotrisiloxane, 1-3 parts of tetramethylammonium hydroxide, 2-4 parts of benzoin dimethyl ether, 2-4 parts of 2, 2-(1, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate) and 1-3 parts of 2, 2-difluoro-1, 3-pentanediol monoisobutyrate. The composite filler is prepared from the following components: carboxyl carbon nano tubes, tetraethoxysilane and 3-mercaptopropyltriethoxysilane, and the composite filler is prepared from the following components: the carboxyl carbon nano tubes, the tetraethoxysilane and the 3-mercaptopropyltriethoxysilane. The preparation method comprises the following steps: preparing the carboxyl carbon nano tubes from the carboxyl carbon nano tubes, the tetraethoxysilane and the 3-mercaptopropyltriethoxysilane; a carbon nanotube / silicon dioxide composite material is prepared, the composite material is modified through 3-mercaptopropyltriethoxysilane to obtain a composite filler, and the composite filler is added into polyfluorosiloxane to prepare the fluorosilicone rubber composite material, so that the mechanical property of the fluorosilicone rubber is improved.

The invention relates to the technical field of rubber, in particular to outer-layer rubber of an aging-resistant rubber dam and a preparation method of the outer-layer rubber, the outer-layer rubber is prepared from the following raw materials in parts by weight: 100 parts of chloroprene rubber (CR), 5 parts of zinc oxide (ZnO), 2.5 parts of an anti-aging agent, an anti-aging agent 4010, an anti-aging agent 4010NA, 2 parts of an accelerant and a combined system of an accelerant NA-22 and an accelerant TT (or DM), according to the anti-aging rubber dam outer layer rubber, the service life of a dam can be remarkably prolonged, and performance reduction and potential safety hazards caused by material aging are reduced. The outer-layer rubber has excellent weather resistance, chemical corrosion resistance and ultraviolet irradiation resistance, and can keep stable physical properties even in an extreme environment, so that safe and stable operation of the dam under various working conditions is ensured.

The invention belongs to the technical field of rubber, and particularly relates to a rubber composition, a preparation method thereof and a TBR tire using the rubber composition. The rubber composition is prepared from the following components in parts by mass: 100 parts of diene rubber, 0.2 to 1.5 parts of hydrazide compound, 0.2 to 1.5 parts of tetrazine compound multifunctional modifier, 0 to 30 parts of liquid rubber, 20 to 120 parts of reinforcing filler, 1 to 10 parts of silane coupling agent, vulcanization accelerator, vulcanizing agent, antioxidant, vulcanization activator, resin and plasticizer. The rolling resistance and heat generation of the TBR all-steel tire can be obviously reduced, and meanwhile, the cutting resistance and tear resistance of the tire are improved.

The invention discloses low-volatility low-yellowing heat-conducting silicone rubber and a preparation method thereof, and belongs to the technical field of silicone rubber, the low-volatility low-yellowing heat-conducting silicone rubber comprises the following raw materials by weight: 100 parts of base rubber, 8-15 parts of a plasticizer, 3-8 parts of a cross-linking agent, 2-6 parts of a coupling agent, 1-5 parts of a catalyst, 30-50 parts of a flame retardant filler, 80-120 parts of a heat-conducting filler, and 5-10 parts of a thixotropic agent; the base adhesive is one of trimethoxy-terminated polydimethylsiloxane and dimethoxy-terminated polydimethylsiloxane, so that the effect that the cured adhesive still has good strength under the condition that the dosage of the cross-linking agent is reduced is achieved.

The present invention discloses a silicone rubber raw material, silicone rubber and a preparation method, an engine cooling water pipe, and an automobile, and relates to the silicone rubber technical field. The silicone rubber raw material includes the following components in parts by mass: 65 to 70 parts of a first methyl vinyl silicone rubber raw rubber; 20 to 30 parts of a second methyl vinyl silicone rubber raw rubber; 8 to 12 parts of a third methyl vinyl silicone rubber raw rubber; 40 to 60 parts of a first white carbon black; 1 to 5 parts of a second white carbon black; 3 to 5 parts of hydroxy silicone oil; 3 to 5 parts of methoxy silicone oil; 1 to 3 parts of carbon black; 1 to 3 parts of cerium oxide; 1 to 3 parts of titanium oxide; 1 to 3 parts of a vulcanizing agent. The silicone rubber raw material provided by the technical solution of the present invention uses conventional white carbon black as a reinforcing agent, and does not require additional additives. The prepared silicone rubber has excellent high temperature resistance and anti-aging properties, has high plasticity, and also has good processing properties of non-stick rollers and a long storage time.

The invention relates to the technical field of modified rubber, in particular to a preparation method of durability-enhanced modified rubber and application of the durability-enhanced modified rubber in a sole material. The method comprises the following steps: 1, preparing raw materials; step 2, plastifying; step 3, mixing the master batch; 4, mixing the final mixed rubber; step 5, vulcanization molding; according to the preparation method of the durability-enhanced modified rubber and the application of the durability-enhanced modified rubber in a sole material, the modified rubber can improve the comprehensive performance of a sole, and the Brazilian trefoil rubber endows the sole with good elasticity; according to the present invention, the rigidity and the wear resistance of the sole are enhanced by the ancient Titan wave glue, the sole adapts to various complex pavements, the plasticizer pine tar softens the rubber, the secondary combination of the lignin fiber and the vulcanized rubber network can further increase the mechanical property of the rubber, and the vulcanizing efficiency is improved by adding the active agent; and comprehensively, the quality and durability of the sole are improved, so that the practicability of the modified rubber applied to the sole material is improved.

The invention discloses a supercritical carbon dioxide foamed rubber material and a preparation method thereof, and belongs to the technical field of foamed rubber. The foaming rubber is prepared from the following raw materials in parts by weight: 70 to 80 parts of natural rubber, 20 to 30 parts of chloroprene rubber, 20 to 30 parts of white carbon black, 4 to 5 parts of plasticizer, 1 to 1.5 parts of activating agent, 1 to 1.5 parts of coupling agent, 2 parts of anti-aging agent, 1.8 parts of sulfur, 3 to 4 parts of accelerant, 0.2 part of scorch retarder, 1 to 1.5 parts of potassium adipate, 5 parts of zinc oxide, 2 parts of magnesium oxide, 2 parts of stearic acid and 3.5 to 3.65 parts of supercritical carbon dioxide fluid. The continuous production of the rubber physical foaming sole can be realized, the foaming rubber vulcanization and foaming process can be completed by a one-time process, the size is basically stable after mold stripping, the sole can be used for subsequent shoemaking production without further processing, and the sole with relatively complex appearance size can be produced. The method is suitable for preparing the foamed rubber sole.

The invention discloses a nuclear low-sulfur, halogen-free and radiation-resistant ethylene propylene diene monomer and a preparation method thereof, and relates to the technical field of nuclear rubber, ethylene and propylene are used as basic units and are mixed according to a ratio of 1: 2, a third monomer is non-conjugated diene free of sulfur and halogen, a low-sulfur or sulfur-free vulcanization system is selected, and a second monomer is a low-sulfur or sulfur-free vulcanization system; according to the low-sulfur, halogen-free and radiation-resistant ethylene propylene diene monomer rubber, the influence of six elements on the product performance is avoided, the halogen-free additive and filler are selected, harmful substances of the ethylene propylene diene monomer rubber can be effectively reduced through the low-sulfur and halogen-free characteristics, the safety and environmental protection property of the product are improved, and the low-sulfur, halogen-free and radiation-resistant ethylene propylene diene monomer rubber can keep stable performance under extreme conditions and is suitable for industrial production. And the ethylene propylene diene monomer has better processability, and is processed and formed in various modes such as extrusion, injection molding or calendaring, so that the production cost is reduced, and the production efficiency is further improved.

The invention relates to the technical field of rubber for shoes, in particular to wear-resistant sole rubber and a preparation method and application thereof.The wear-resistant sole rubber comprises raw rubber and additives, the raw rubber is composed of rare earth butadiene rubber and block type high styrene vinyl solution polymerized styrene-butadiene rubber, the additives comprise a reinforcing filler, a plasticizer, a surface modifier of the reinforcing filler, a peroxide bridging agent, an accelerant of the peroxide bridging agent, an anti-aging agent and an iron ion absorbent, the raw rubber and part of the additives are mixed and then internally mixed to obtain a mixture, then the mixture is subjected to thin-passing after being discharged and then processed into a sample sheet, and the sample sheet is subjected to hot pressing to obtain the high-strength rubber. And spreading the obtained first intermediate, adding a peroxide bridging agent, carrying out triangular bag making and sheet discharging, and vulcanizing the obtained second intermediate in a mold to obtain the wear-resistant sole rubber. The wear resistance of rubber soles with special purpose requirements such as sports shoes and outdoor shoes prepared by the invention is greatly improved, and higher wear resistance requirements can be met.