1325 results about "Accelerant" patented technology

The invention relates to the field of adhesives, in particular to a structural adhesive epoxy composition and a preparation method thereof. The structural adhesive epoxy composition is prepared from the following raw materials: epoxy resin, a toughening agent, a reinforcing agent, filler, a latent curing agent, a latent accelerant, a chemical foaming agent, a physical foaming agent and the like. Finally, the epoxy composition prepared by the invention can be used as a structural adhesive raw material, has ultrahigh expansion rate, low-temperature rapid curing capacity and structural adhesive property, and also has good mechanical properties and excellent comprehensive application effect, so that the complex requirements of the application field of the prior art on the structural adhesive raw material are met.

The invention provides a high-hydrophobicity anti-pollution flashover coating and a preparation method thereof, and relates to the field of coatings. The silicone rubber composition is prepared from the following raw materials in parts by weight: 80 to 100 parts of hydroxyl-terminated polydimethylsiloxane; 5 to 15 parts of modified nano silicon dioxide; 10 to 30 parts of a composite self-repairing microcapsule; 10 to 25 parts of a flame retardant; 3-8 parts of a cross-linking agent; 0.5-2 parts of a catalyst; 1-5 parts of an accelerant; 40 to 100 parts of a solvent; the modified nano silicon dioxide is fumed silica subjected to surface treatment by a fluorine-containing silane coupling agent and a platinum catalyst; the capsule wall of the composite self-repairing microcapsule is a polylactic acid-glycolic acid copolymer, and the capsule core of the composite self-repairing microcapsule is a mixed solution of a hydroxyl-terminated polydimethylsiloxane oligomer and methyltris (methylethylketoximino) silane. The coating has excellent hydrophobicity, weather resistance and targeted repair function.

The invention discloses a high-toughness conductive and thermal-conductive epoxy adhesive, a preparation method thereof and a conductive film, and belongs to the technical field of conductive materials. Comprising the following raw material components in parts by weight: 100 parts of epoxy resin, 4-25 parts of a latent curing agent, 0.5-5 parts of an accelerant, 200-600 parts of conductive filler, 5-15 parts of an epoxy-terminated polyurethane flexibilizer, 5-20 parts of a core-shell flexibilizer, 5-10 parts of a nitrile rubber flexibilizer, 2-10 parts of a reactive diluent, 0.5-2 parts of a coupling agent and 20-50 parts of a solvent. Through compounding of the over-end epoxy type polyurethane flexibilizer, the core-shell flexibilizer and the nitrile rubber flexibilizer, the prepared conductive adhesive has excellent toughness and bonding characteristics, and meanwhile, the shrinkage stress and thermal stress in the curing process can be reduced.

The application provides a masterbatch type vulcanization aid and a preparation method thereof, a rubber composition, a rubber product and a tire. The preparation method comprises the following steps: S1, pre-reaction of stearic acid, an antioxidant and a vulcanization system to obtain a pre-reaction mixture; and S2, mixing of the pre-reaction mixture with rubber to obtain the masterbatch type vulcanization aid. Under the catalysis of stearic acid, the reagents in the antioxidant and the vulcanization system react to generate active intermediates. The active intermediates have the effect of promoting vulcanization and play the role of activating accelerators in advance, so that the active intermediates can replace the role of zinc oxide. The product after reaction is mixed with rubber, and the masterbatch formed can be used to prepare rubber products such as tires without containing zinc elements, so that zinc emission can be realized, and the environment is friendly.

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 discloses a normal-temperature curing ablation-resistant coating and a preparation method thereof, the normal-temperature curing ablation-resistant coating comprises a component A, a component B and a component C, the component A comprises the following raw materials by weight: 20-30 parts of epoxy resin, 30-40 parts of liquid nitrile rubber, 27-50 parts of an ablation-resistant filler, 10-20 parts of a heat-insulating functional filler, and 200-300 parts of toluene; the component B is a curing agent; and the component C is a curing accelerator. By selecting the high-performance polymer-based resin material and adding the ablation-resistant filler and the heat-insulating functional filler, the ablation-resistant and heat-insulating coating protection construction of the equipment under the normal-temperature curing condition is realized; the problems of ablation-resistant coating construction and thermal protection when a fragile cover, a launcher and the like in a launching system cannot use a high-temperature curing system ablation-resistant coating are solved. The coating can realize military technology and civil use, and can be widely applied to fire prevention and heat insulation construction of buildings.

The invention discloses a preparation method of a rubber waterstop material with a low compression set rate, which comprises the following steps: firstly, carrying out blending reaction on hydroxyl silicone oil and boric acid to obtain liquid polyborosiloxane; the preparation method comprises the following steps: adding liquid polyborosiloxane and natural rubber into an internal mixer according to a ratio, and carrying out internal mixing to obtain a mixture; adding zinc oxide, an anti-aging agent, stearic acid and an anti-tearing agent into the obtained mixture, and continuously mixing; continuously adding kaolin talcum powder, calcium carbonate, calcium oxide, white carbon black, N550, N330 and KH550, and internally mixing again to obtain a preform; adding a vulcanization accelerator and a vulcanizing agent into the preform, and continuously mixing to obtain a rubber material to be vulcanized; and vulcanizing and forming the rubber material to be vulcanized to prepare the rubber water-stop belt material with the low compression set rate. According to the invention, the compression set rate of the rubber material can be reduced while the tensile strength, elongation, tear resistance and other properties of the rubber are not sacrificed, so that the product performance is enhanced.

The invention relates to the technical field of rubber materials, and provides a flame-retardant rubber hose and a preparation method thereof. The flame-retardant rubber hose comprises an inner rubber layer, a reinforcing layer and an outer rubber layer, and raw materials of the inner rubber layer and the outer rubber layer respectively and independently comprise the following components in parts by weight: 10-15 parts of MQ silicone rubber, 85-90 parts of nitrile rubber, 3-7 parts of 3-carboxyl-4-hydroxy-acetoacetanilide modified graphene, 35-45 parts of filler, 1-3 parts of an anti-aging agent, 5-10 parts of a plasticizer, 2-5 parts of an activating agent, 1-2 parts of a vulcanizing agent and 0.5-1.5 parts of an accelerant. According to the technical scheme, the problem that the rubber hose in the prior art is insufficient in mechanical property and flame retardant property is solved.

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 application provides a zinc-free vulcanization aid, a rubber composition, a rubber product and a tire. The zinc-free vulcanization aid is prepared by the following method: zinc oxide, stearic acid, an antioxidant, a vulcanization system medicine are pre-reacted in a solvent, and after pre-reaction, filtration for removing zinc and solvent removal are sequentially performed to obtain the zinc-free vulcanization aid. The zinc-free vulcanization aid contains an active intermediate generated by pre-reaction, the intermediate has the effect of promoting vulcanization, and plays the role of activating the accelerator in advance, so that it can partially or completely replace the role of zinc oxide in the ordinary formula. The zinc-free rubber product can be prepared by using the zinc-free vulcanization aid, zinc emission is realized, the environment is friendly, and through the action of the zinc-free vulcanization aid, the rubber composition can obtain the rubber properties such as crosslinking density, hardness, modulus, hysteresis and the like close to those of the zinc-containing rubber without containing zinc.

This invention relates to the field of sealing ring technology, and proposes an aging-resistant rubber sealing ring and its preparation method. An aging-resistant rubber sealing ring comprises the following components in parts by weight: 70-80 parts of nitrile rubber, 20-25 parts of chloroprene rubber, 20-30 parts of filler, 3-4 parts of activator, 1-2 parts of co-activator, 2-3 parts of antioxidant, 4-8 parts of plasticizer, 2-3 parts of crosslinking agent, and 1-2 parts of accelerator; the filler includes modified carbon nanotubes and nylon 66 fiber; the preparation method of modified carbon nanotubes includes the following steps: A1, adding carbon nanotubes to mixed acid, soaking, filtering, and drying to obtain pretreated carbon nanotubes; A2, adding the pretreated carbon nanotubes and methyl cyanobenzoate to ethyl acetate, stirring, concentrating, and drying to obtain modified carbon nanotubes. Through the above technical solution, the problem of poor aging resistance of rubber sealing rings in related technologies is solved.

A green and sustainable tire base rubber composition and a preparation method, relating to the technical field of tire production. The composition comprises a tire base. The tire base comprises 100 parts by weight of cis-1,4-polyisoprene, 20-40 parts by weight of bio-based carbon black, 0-20 parts by weight of bio-based silicon, 0-20 parts by weight of a silane coupling agent, 1-3 parts by weight of stearic acid, 2-7 parts by weight of zinc oxide, 0.5-2 parts by weight of a carbon black coupling agent, 1.5-3.5 parts by weight of the antioxidant 6PPD, 0.5-2 parts by weight of the antioxidant TMQ, 1.5-2 parts by weight of oil-extended sulfur powder, and 1.5-3.0 parts by weight of the accelerator CZ. The use of the carbon black coupling agent reduces the heat build-up of a rubber material, however, the Mooney viscosity of the rubber is significantly increased. Once a dedicated process has been used, the viscosity of the rubber material is controlled, and the tanδ value of the heat build-up of the rubber material at 60°C is significantly reduced, so that the rolling resistance of a tire is reduced, and the tire maintains good physical and mechanical properties.

The invention relates to an epoxy resin composite insulating material and a preparation method and application thereof, and belongs to the technical field of insulator equipment. The epoxy resin composite insulating material is prepared from the following raw materials: epoxy resin, nano filler, a surface modifier, aluminum oxide particles, a flame retardant, an organic solvent, a curing agent and an accelerant. The nanofiller is at least one of the following nanoscale materials: titanium dioxide, graphene oxide, carbon nitride, zinc oxide, boron nitride and silicon dioxide; the surface modifier is a silane coupling agent and is used for surface modification of the nano filler; the flame retardant is at least one of a phosphorus flame retardant, a nitrogen-phosphorus synergistic flame retardant and a brominated flame retardant. The insulating material provided by the invention has high thermal stability, high insulativity and carbon precipitation inhibition capability, can effectively inhibit carbon precipitation of epoxy resin under the action of thermal and electric stress, and has good comprehensive performance.

The invention relates to the technical field of high polymer materials, and discloses a low-temperature-resistant butyronitrile composite material and a preparation method thereof. The butyronitrile composite material comprises the following raw materials in parts by weight: 60-80 parts of nitrile rubber, 25-35 parts of modified hydrogenated nitrile rubber, 1.5-2.5 parts of a vulcanizing agent, 2-3 parts of a vulcanization accelerator, 3-6 parts of a cold-resistant plasticizer, 20-30 parts of carbon black and 2-4 parts of an anti-aging agent. The material is prepared by taking nitrile rubber as a main matrix and adding functional aids such as modified hydrogenated nitrile rubber. The composite material has excellent low temperature resistance while maintaining the comprehensive performance of the nitrile rubber, so that the composite material can be widely applied to the environment needing to adapt to low temperature.

The present invention discloses a high thermal conductivity rubber material and a preparation method thereof, and relates to the technical field of rubber production, the high thermal conductivity rubber material comprises a rubber matrix, modified carbon black, a vulcanizing agent, a composite accelerator, an anti-aging agent, zinc oxide, stearic acid, white carbon black, montmorillonite and aramid pulp according to a weight ratio of 100: (40-60): (1.5-3): (2-4): (1-3): (3-8): (1-3): (10-20): (5-15): (3-8); the modified carbon black is prepared by reacting a composite modifier solution prepared from a silane coupling agent, sodium alginate, ammonium polyacrylate, tea polyphenol, polyethyleneimine, nano aluminum oxide and deionized water with carbon black; the composite accelerant is prepared by carrying out pre-dispersion treatment on N-cyclohexyl-2-benzothiazole sulfenamide, tetramethylthiuram disulfide, a rare earth complex and nano zinc oxide. The prepared high-thermal-conductivity rubber material is good in mechanical property and thermal conductivity.

The invention discloses a high-temperature-resistant high-stripping organic silicon pressure-sensitive adhesive and a preparation method thereof, and relates to a pressure-sensitive adhesive and a preparation method thereof. The invention aims to solve the problems of insufficient temperature resistance, low peel strength and poor binding force with a base material of the existing organic silicon pressure-sensitive adhesive. According to the invention, phenyl siloxane rubber, hydroxyl-terminated polysiloxane and methyl vinyl MQ silicon resin are used as basic raw materials, and polysilazane is used as a heat-resistant modifier to carry out heat-resistant modification on the chemical structure of the pressure-sensitive adhesive; a trifunctional allyl silane monomer is added in the film preparation process, so that the crosslinking density of the system is improved, and the heat resistance of the pressure-sensitive adhesive is further improved; the bonding force between the pressure-sensitive adhesive and a polyimide substrate is improved by adding the peroxysilane coupling agent, and the use of a primer in the coating process is omitted; by adding the hydroxyl MQ silicon resin and the phosphate adhesion promoter, the bonding strength of the pressure-sensitive adhesive is improved, and the high-temperature-resistant and high-stripping organic silicon pressure-sensitive adhesive is prepared. According to the invention, the high-temperature-resistant and high-stripping organic silicon pressure-sensitive adhesive can be obtained.

The invention belongs to the technical field of preparation of chloroprene rubber, and provides bio-based plasticizer modified chloroprene rubber and a preparation method thereof. The bio-based plasticizer is chlorinated palm oil methyl ester and is prepared by mixing chloroprene rubber, carbon black, chlorinated palm oil methyl ester, an anti-aging agent, zinc oxide, magnesium oxide, stearic acid and an accelerant according to a certain proportion. A proper amount of chlorinated palm oil methyl ester is added, so that the flexibility and cold resistance of the chloroprene rubber are effectively improved, and the chloroprene rubber still can keep relatively good elasticity and use performance in a low-temperature environment. The environment protection and the re-biochemistry of the plasticizer are realized, the dependence on non-renewable resources is reduced, and the potential harm to the environment is reduced. And the original good physical and mechanical properties, such as tensile strength, of the chloroprene rubber are maintained. Conventional rubber processing equipment and process are adopted, operation is easy, control is easy, the method is suitable for industrial production, and good application prospects and economic benefits are achieved.

The invention relates to the technical field of rubber materials, in particular to a wear-resistant non-slip rubber outsole material and a preparation method of the wear-resistant non-slip rubber outsole material. The rubber material is prepared from the following components in parts by mass: 10 to 40 parts of natural rubber, 10 to 20 parts of epoxidized natural rubber, 40 to 80 parts of itaconate rubber, 10 to 60 parts of rice husk white carbon black, 5 to 20 parts of lignin, 5 to 20 parts of cellulose filler, 1 to 6 parts of coupling agent, 1 to 6 parts of dispersing agent, 0.5 to 2 parts of paraffin, 1 to 5 parts of resin, 1 to 3 parts of antioxidant, 1 to 5 parts of active agent, 0.5 to 2 parts of stearic acid, 1 to 3 parts of accelerant and 1 to 3 parts of sulfur. According to the invention, a bio-based rubber material is used as a matrix, various reinforcing fillers and processing aids from bio-based sources are used, the mechanical strength, wear resistance and slip resistance of the material are improved through a modified composite technology, and a material support is provided for green and sustainable development of shoe materials.

The invention relates to a waterproof sealing gasket material for a shield tunnel and a preparation method of the waterproof sealing gasket material. The preparation method comprises the following steps: plastifying raw rubber to obtain plastified raw rubber; the preparation method comprises the following steps: stirring and mixing plasticated raw rubber, carbon black N550, calcium carbonate, paraffin oil, zinc oxide, stearic acid, calcium oxide, an anti-aging agent and an organic magnesium compound, mixing in a mixing mill, and cooling to room temperature to obtain a mixture I; stirring and mixing the mixture I, modified NPE particles and an accelerant, mixing, and cooling to room temperature to obtain a mixture II; uniformly mixing the mixture II and sulfur in a mixing mill, vulcanizing at high temperature, and standing at room temperature for 24 hours to obtain the waterproof sealing gasket material. According to the waterproof sealing gasket material, the modified NPE particles of the core-shell structure are added, the compatibility of a water-swelling material and non-polar rubber is improved, the organic magnesium compound is added as a multifunctional auxiliary agent, the interface bonding, vulcanization network and flame retardant performance are synergistically improved, and the waterproof sealing gasket material has good waterproof performance. The prepared sealing gasket material has excellent mechanical properties, heat aging resistance, compression set resistance and flame retardance.

The present invention provides a vulcanization aid and a preparation method therefor, a rubber composition, a rubber product, and a tire. The preparation method comprises: pre-reacting an anti-aging agent with a vulcanization system agent under the action of a catalyst, wherein the catalyst includes stearic acid. Under the catalytic action of stearic acid, the anti-aging agent reacts with a reagent in a vulcanization system to generate an active intermediate. The active intermediate has the function of promoting vulcanization and plays a role of activating an accelerator in advance, so that the active intermediate can functionally replace zinc oxide, can be used for preparing a rubber product completely free of the element zinc, e.g., a tire, can achieve zinc-free emission, and is environmentally friendly.

The invention provides a modified high-temperature-resistant heat-insulating anticorrosive coating and a preparation method thereof. The modified high-temperature-resistant heat-insulating anticorrosive paint comprises a component A and a component B, the component A comprises organic silicon resin, epoxy resin, a polyaniline-nano metal oxide-graphene oxide composite material, hollow glass beads and hexagonal boron nitride; the component B comprises an organic silicon modified amine curing agent, an anhydride curing agent, a titanate catalyst and an accelerant. The modified high-temperature-resistant heat-insulating anticorrosive paint has excellent corrosion resistance, high-temperature-resistant heat-insulating performance and high-temperature cracking resistance, and also has the advantages of strong adhesive force and short surface drying time. The modified high-temperature-resistant heat-insulating anticorrosive paint provided by the invention is suitable for corrosion protection of metal components exposed in high-temperature and complex corrosive environments for a long time.

The invention discloses a self-suspension ultrahigh-intensity pressure activated phase change sealing capsule for micro-leakage control and a preparation method thereof, and belongs to the technical field of leaking stoppage materials. The preparation raw materials comprise the following components in parts by weight: 50-100 parts of latex, 50-150 parts of water, 5-20 parts of an activating agent, 5-20 parts of a crystal phase change nano reinforcing agent, 5-20 parts of a defoaming agent, 1-10 parts of nano metal oxide, 0.5-5 parts of an anti-scorching agent, 0.5-5 parts of an accelerant and 50-150 parts of a terminating agent. The crystal phase change type nano reinforcing agent comprises at least one of polytetrafluoroethylene, polyvinylidene fluoride and a copolymer of the polytetrafluoroethylene and the polyvinylidene fluoride. The obtained phase-change sealing capsule is high in plugging speed, easy and convenient to construct, low in cost and high in plugging strength, can be applied to rapid repair and control of underground tubular column micron-scale to millimeter-scale crack leakage, and solves the problems that the plugging and repairing work flow is complex, the period is long, the cost is high, the risk is large, the one-time plugging success rate is low, and hidden dangers are difficult to eradicate.

The invention discloses a low-shrinkage acrylate gel material and a preparation method thereof. The gel material is prepared by mixing a solution A and a solution B according to an equal proportion, the liquid A comprises acrylate, a cross-linking agent, an accelerant and a retarder; the acrylate is a calcium acrylate solution, a magnesium acrylate solution or a mixed solution of calcium acrylate and magnesium acrylate; the concentration of the acrylate in the solution A is 15wt.%-35wt.%; the liquid A is also added with a modified material, and the modified material is selected from at least one of hydroxyethyl ester, chloroprene rubber, polyurethane, polyvinyl alcohol and epoxy resin; the addition amount of the modified material is 1%-5% of the total mass of the solution A; the solution B comprises an initiator and distilled water; the initiator is selected from at least one of ammonium persulfate, hydrogen peroxide and azodiisobutyronitrile; the use amount of distilled water in the solution B is determined according to initiator concentration; by optimizing an acrylate compound system, introducing an anti-shrinkage functional component and accurately controlling a preparation process, the comprehensive improvement of material performance and engineering applicability is finally realized.

The invention discloses a stab-resistant rubber, a preparation method of the stab-resistant rubber and a stab-resistant tire, the stab-resistant rubber comprises the following components in percentage by weight: 40-60% of butyl rubber, 5-15% of aramid fiber, 10-15% of nano silicon dioxide, 10-20% of plasticizer, 1-3% of vulcanizing agent and 5-10% of additive, and the additive comprises an anti-aging agent, an accelerant and a filler which are mixed. The puncture resistance of the puncture-proof rubber is remarkably improved, puncture of a tire by a sharp object can be effectively prevented, and the risks of tire air leakage and tire burst are greatly reduced.

The invention discloses a hydrolysis-resistant low-temperature-resistant bi-component nano acrylate grouting plugging material and a preparation method thereof. The plugging material is prepared by mixing a component A and a component B according to a volume ratio of 1: 1, the component A is prepared from the following components in parts by mass: 25 to 40 parts of acrylate, 12 to 20 parts of hydrolysis-resistant modified component, 3 to 8 parts of low-temperature-resistant functional component, 8 to 15 parts of nano modified filler, 0.3 to 0.8 part of cross-linking agent, 1.5 to 3.0 parts of accelerant, 0.3 to 0.6 part of pH regulator and 40 to 50 parts of deionized water; the component B is prepared from the following components in parts by mass: 1.5 to 2.5 parts of a composite initiator, 0.2 to 0.5 part of a low-temperature catalyst, 0.8 to 1.5 parts of a dispersion stabilizer, 0.3 to 0.8 part of a hydrolysis-resistant auxiliary agent and 90 to 100 parts of deionized water; the plugging material meets the following performance indexes: the 28d compressive strength is greater than or equal to 6.5 MPa, the strength retention rate is greater than or equal to 85% when the plugging material is soaked in distilled water at 50 DEG C for 30 days, the strength loss is less than or equal to 10% when the plugging material is frozen and thawed for 30 times at-30 DEG C, the 28d bonding strength with a concrete base material is greater than or equal to 2.5 MPa, the 0.1 mm micro-crack penetration depth at 25 DEG C is greater than or equal to 60 mm, and the setting time at 25 DEG C is 30 seconds to The method can effectively meet the requirement for leakage water treatment in the high-humidity and high-water-pressure environment of underground engineering in the cold region.

The invention discloses a method for efficient photo-thermal catalytic degradation of sulfur-containing organic gas. A preparation method of a sulfur-resistant catalyst comprises the following steps: (1) salt containing sulfur-resistant active metal A and an accelerant are added into water to obtain a salt solution of the active metal A, and the active metal A is selected from more than one of Fe, Co, Cu, Mn, Ni, Pt and Sr; (2) adding a salt solution containing an active phase metal B into the carbon dioxide nanotube, carrying out vacuum-assisted confinement, drying and reducing to obtain an active phase material for degrading the sulfur-containing organic gas in the confinement of the titanium dioxide nanotube, the active phase metal B being selected from more than one of Fe, Co, Cu, Mn, Ni, Pt and Sr; and (3) adding the active phase material of the titanium dioxide nanotube for confinement degradation of the sulfur-containing organic gas into the salt solution of the active metal A for coupling to obtain the sulfur-resistant catalyst. According to the method provided by the invention, the catalyst shows excellent catalytic performance in light and heat catalytic systems.

The invention relates to the field of rubber formulas and manufacturing processes, and provides high-cutting-resistance and impact-resistance side wall rubber of a tensile tire and a preparation method of the high-cutting-resistance and impact-resistance side wall rubber. The sidewall rubber is prepared from components in parts by weight as follows: 60-80 parts of natural rubber, 10-20 parts of emulsion polymerized styrene-butadiene rubber, 10-20 parts of butadiene rubber, 30-40 parts of carbon black, 10-25 parts of white carbon black, 1-5 parts of carbon nanotubes, 1-3 parts of a silane coupling agent, 1-3 parts of tear-resistant resin, 1.5-2 parts of stearic acid, 2-3 parts of zinc oxide, 2-5 parts of an anti-aging agent, 1-2 parts of protective wax, 1-2 parts of an accelerant and 1-2 parts of sulfur. According to the invention, a ternary polymer matrix of natural rubber / emulsion polymerized styrene-butadiene rubber / butadiene rubber is adopted to balance strength, rigidity and toughness, a ternary composite reinforcing system taking carbon black as a main body, a small amount of white carbon black as an auxiliary and carbon nanotubes as a key reinforcing phase is constructed, and the problem of dispersion of the carbon nanotubes is effectively solved by utilizing a multi-section mixing process.

A method for preparing a heavy-duty tire with a natural rubber (NR) modified by graphene / carbon blacks varying in particle size synergized with a vulcanization system is provided. Carbon blacks varying in particle size are subjected to surface modification to obtain an graphene oxide / carbon blacks varying in particle size aqueous dispersion. Subsequently, a graphene oxide / carbon blacks varying in particle size modified NR masterbatch is prepared using an aqueous-phase synergistic aggregating precipitating process. Finally, a natural rubber heavy-duty tire is prepared from graphene / carbon blacks varying in particle size synergistically vulcanized modified natural rubber through a molding process. Compounding of graphene with the carbon blacks varying in particle size is utilized to improve dispersion of reinforcing fillers within the rubber matrix. Adjustment of a ratio of a vulcanizing agent to an accelerator is utilized to regulate a cross-linked network structure of the rubber.

The invention relates to the technical field of new energy automobile air suspensions, and particularly discloses a heat-resistant ozone-resistant air spring outer layer rubber material. The rubber material is prepared from natural rubber, chlorosulfonated polyethylene rubber, ethylene-vinyl acetate rubber, high-activity magnesium oxide, stearic acid, an anti-aging agent, microcrystalline wax, tert-butylphenol formaldehyde resin, reinforcing filler, a plasticizer, zinc oxide, a vulcanizing agent and an accelerant. The invention also discloses a preparation method of the sizing material. The heat-resistant ozone-resistant air spring outer layer rubber material disclosed by the invention has good heat resistance, cold resistance and ozone aging resistance, and also has the advantages of wide application environment range and long service life.

The rubber additive is prepared from the following raw materials in parts by weight: 30 to 40 parts of styrene-acrylic emulsion, 14 to 18 parts of nano silicon dioxide sol and 3 to 6 parts of modified accelerant NS. According to the rubber additive and the novel environment-friendly process thereof, the physical and chemical properties of rubber are effectively improved, the environmental pollution is reduced, and the sustainable development requirement of green and environment protection is met.