1467 results about "Ethylene propylene rubber" patented technology

The invention discloses an environment-friendly high-strength water-stop belt and a preparation method thereof, and relates to the technical field of high-molecular compound composition water-stop belts. The environment-friendly high-strength water-stop belt is prepared from the following components in parts by mass: 100 parts of ethylene propylene diene monomer, 40 to 70 parts of reinforcing filler, 10 to 25 parts of environment-friendly plasticizer, 1 to 5 parts of interface modifier, 1.5 to 3.5 parts of vulcanizing agent, 3 to 8 parts of active agent, 1 to 3 parts of anti-aging agent and 5 to 15 parts of flame retardant. White carbon black and calcium carbonate are adopted as reinforcing filler to replace traditional carbon black, and energy consumption and pollution emission in the production process are remarkably reduced. By optimizing the formula and the preparation process, the tensile strength, the elongation at break, the tearing strength and other mechanical properties of the waterstop are remarkably improved. Aluminum hydroxide is added as a flame retardant, absorbs heat during thermal decomposition and forms a barrier layer, so that oxygen is effectively diluted, and fire spreading is prevented.

The invention discloses an anti-aging water-stop belt and a preparation method and application thereof, and relates to the technical field of water-stop belts. The invention relates to an anti-aging water-stop belt which is prepared from the following raw materials in parts by mass: 40-60 parts of chloroprene rubber, 10-20 parts of natural rubber, 10-20 parts of ethylene propylene diene monomer, 15-30 parts of carbon black, 5-15 parts of white carbon black, 5-15 parts of a plasticizer, 0.5-2 parts of sulfur, 0.5-1.5 parts of an accelerant, 1-2 parts of an anti-aging ultraviolet light absorber, 5-15 parts of aluminum hydroxide, 1-3 parts of stearic acid and 3-8 parts of zinc oxide. The obtained water-stop belt has excellent ultraviolet aging resistance, ozone resistance and chemical corrosion resistance while keeping high elasticity, the mechanical stability of the water-stop belt is remarkably improved compared with that of a traditional product, the water-stop belt is suitable for joint sealing in harsh environments such as bridges, tunnels and water conservancy projects, and the waterproof service life of engineering structures can be effectively prolonged.

The invention discloses a composite material and a preparation method thereof, and belongs to the technical field of resin. AES is introduced into the composite material to serve as a co-toughening agent of ASA, micro-crosslinking of AES and ASA is achieved through the cross-linking agent by means of ethylene propylene rubber in an AES molecular structure, and the heat resistance of the whole system can be improved through the toughening agent obtained after micro-crosslinking on the premise that the toughness is guaranteed. The vicat softening temperature of the composite material can reach 105 DEG C, and the composite material can meet the use requirements of exterior trimming parts of automobile bodies.

The invention discloses a high-strength corrosion-resistant aramid composite material and a preparation process thereof, and relates to the technical field of aramid composite materials, the high-strength corrosion-resistant aramid composite material comprises the following components by mass: 60-80 parts of ethylene propylene diene monomer, 20-40 parts of hydrogenated nitrile rubber, 10-15 parts of polytetrafluoroethylene, 18-30 parts of a filler, 10-15 parts of aramid fiber, 5-8 parts of a plasticizer, and 3-6 parts of a vulcanizing agent. The EPDM rubber, the hydrogenated nitrile rubber and the polytetrafluoroethylene are compounded, and the aramid fibers and the filler are added, so that the composite material with good mechanical property and corrosion resistance is obtained; by modifying the ethylene propylene diene monomer and the aramid fiber, the compatibility among the materials is improved, and the comprehensive performance of the composite material is further improved.

The invention relates to an acid-base permeation-resistant protective glove for a glove box and a preparation method thereof, the glove adopts ethylene propylene diene monomer, butyl rubber, halogenated butyl rubber, chloroprene rubber, chlorosulfonated polyethylene rubber and other base materials to significantly improve the acid-base resistance and mechanical properties of the glove, and the glove is especially suitable for strong corrosive environments such as concentrated nitric acid and the like. The preparation method comprises a multi-step mixing process, the shielding component, the reinforcing filler and the filler are reasonably configured, and the particle size of the shielding component is controlled, so that the shielding component is uniformly dispersed in the rubber, and the permeation resistance of the glove is effectively improved. In addition, the wear-resistant furnace black, the white carbon black, the PTFE, the high-density polyethylene, the ultra-high molecular weight polyethylene and other fillers are selected, so that the glove has a higher wear-resistant grade (grade 4), and the service life is prolonged. The preparation method of the glove is simple and easy to implement, and the finished product has excellent acid and alkali permeability resistance, mechanical property, wear resistance and radiation protection property.

The invention discloses a high-performance fluororubber sealing material and a preparation method thereof, and relates to the technical field of fluororubber. The high-performance fluororubber sealing material comprises the following components in parts by weight: 100 parts of raw fluororubber, 20-35 parts of modified fluororubber, 4-8 parts of maleic anhydride grafted ethylene propylene diene monomer, 20-35 parts of a reinforcing agent, 2.5-3.5 parts of a vulcanizing agent and 4-8 parts of an auxiliary agent. Wherein the modified fluororubber is prepared by reacting amino-containing perfluoropolyether, amino-terminated cyclotriphosphazene and epoxy-terminated liquid fluororubber; the reinforcing agent is obtained by uniformly mixing polydopamine coated silicon dioxide and carbon black and then modifying the mixture with (3, 3, 3-trifluoropropyl) methyldimethoxysilane. By combining the modified fluororubber, the maleic anhydride grafted ethylene propylene diene monomer and the reinforcing agent, the processability, the mechanical property, the high temperature resistance and other properties of the fluororubber are effectively enhanced synergistically.

The invention relates to the technical field of cables, and provides a high-temperature-resistant flame-retardant power cable and a preparation method thereof. A high-temperature-resistant flame-retardant power cable comprises a conductor and a high-temperature-resistant flame-retardant outer layer wrapping the conductor. The high-temperature-resistant flame-retardant outer layer is prepared from the following raw materials in parts by weight: linear low-density polyethylene, an ethylene-vinyl acetate copolymer, ethylene propylene diene monomer, chopped polyimide fibers, nano-coated magnesium hydroxide, zinc borate, zinc stannate, polyethylene grafted maleic anhydride, an anti-aging agent, dicumyl peroxide, an antioxidant, polyethylene wax, calcium stearate and cerium dioxide. According to the cable prepared in the invention, the reliability of an existing high-temperature-resistant flame-retardant power cable under thermal cycle is improved, and the problem of local temperature resistance difference caused by agglomeration and high-temperature migration of nanoparticles in a polymer matrix is improved.

The invention discloses an ethylene propylene diene monomer (EPDM) foam material based on modified red brick powder and a preparation method thereof, and belongs to the technical field of polymer composite materials. The red brick powder is subjected to surface modification, so that the dispersity, compatibility and mechanical enhancement effect of the red brick powder in an EPDM matrix are improved, then the red brick powder is uniformly dispersed in the EPDM matrix, and high strength, low density and excellent foam structure of the foam material are realized by optimizing a foaming process. The EPDM foaming material provided by the invention has excellent mechanical properties, flame retardancy and foam structure, and is applicable to sealing, heat insulation, shock absorption and the like in the fields of automobiles, buildings, electronics and the like.

The invention relates to the technical field of high polymer materials, and provides an anti-aging cable and a preparation method thereof. The anti-aging cable comprises a conductor and a sheath layer, the sheath layer is prepared from the following raw materials in parts by weight: 40 to 60 parts of ethylene propylene diene monomer, 20 to 30 parts of ethylene-vinyl acetate copolymer, 20 to 22 parts of nano cellulose / montmorillonite composite material, 5 to 10 parts of nano silicon dioxide, 10 to 20 parts of magnesium hydroxide, 5 to 8 parts of zinc borate, 1.5 to 3 parts of composite antioxidant, 0.5 to 1.5 parts of ultraviolet light absorber, 1 to 1.2 parts of anti-aging agent and 1 to 2 parts of silane coupling agent. And 0.3 to 0.5 part of maleic anhydride grafted polypropylene. According to the anti-aging cable prepared in the invention, the high temperature resistance and the acid corrosion resistance of the anti-aging cable are improved, and the aging of the cable is effectively delayed.

The invention relates to the technical field of cables, and provides an anti-aging insulated power cable. A conductor layer and an anti-aging outer sheath layer are sequentially arranged from inside to outside. The anti-aging outer sheath layer is prepared from the following raw materials in parts by weight: 55 to 65 parts of PVC (Polyvinyl Chloride) resin, 20 to 30 parts of ethylene propylene diene monomer, 10 to 15 parts of ethylene-vinyl acetate copolymer, 10 to 12 parts of modified kaolin, 18 to 20 parts of diisononyl phthalate, 4 to 5 parts of calcium-zinc composite stabilizer, 1.5 to 2 parts of antioxidant, 0.5 to 1 part of polyethylene wax and 0.5 to 0.7 part of calcium stearate; the modified kaolin is obtained by coating the surface of kaolin with nano silicon dioxide to obtain SiO2-coated kaolin and grafting the SiO2-coated kaolin with an ultraviolet absorbent. According to the anti-aging insulated power cable prepared in the invention, the problem that the ultraviolet absorbent may be decomposed, volatilized or migrated to fail in long-term use is solved, and the anti-aging stability of the insulating material in long-term operation is improved.

The invention provides an ultralight high-resilience cushioning transparent EVA composite chemical foaming material. The ultralight high-resilience cushioning transparent EVA composite chemical foaming material is prepared from the following raw materials in parts by mass: 30-60 parts of high-transparency modified TPX, 30-50 parts of an ethylene-vinyl acetate copolymer, 7-25 parts of a thermoplastic elastomer TPE, 5-16 parts of an olefin block copolymer, 5-10 parts of a wear-resistant agent, 0.2-0.5 part of stearic acid, 0.2-1 part of zinc stearate, 0.3-1.5 parts of an odorless bridging agent and 3.5-8 parts of a transparent foaming agent, the high-transparency modified TPX is prepared from high-transparency TPX, EVOH, ethylene propylene diene monomer and stearic acid. The EVA composite chemical foaming material provided by the invention has the advantages of ultralight weight, low shock absorption, high resilience, high transparency and high energy feedback, keeps the wearing comfort of shoes, protects a consumer from fatigue, pain and even injury caused by the material shock absorption problem in the exercise process, is high in cost performance, and meets the comprehensive requirements of the consumer.

The invention relates to the technical field of sealing strips, in particular to an anti-aging ethylene propylene diene monomer rubber sealing strip and a preparation method thereof. Comprising the following components in parts by weight: 150-180 parts of ethylene propylene diene monomer, 60-90 parts of carbon black, 8-12 parts of white carbon black, 3-8 parts of a peroxide vulcanizing agent, 6-12 parts of zinc oxide, 12-16 parts of magnesium-aluminum hydrotalcite, 10-18 parts of a plasticizer, 1-3 parts of a crosslinking aid, 1-3 parts of calcium stearate, 1-3 parts of an anti-aging agent and 1-3 parts of a silane coupling agent. The anti-aging agent is a mixture of an anti-aging agent AN245 and an anti-aging agent MBZ. By adding the anti-aging agent, the aging resistance of the ethylene propylene diene monomer can be remarkably improved by inhibiting oxidation and delaying the aging process, a high-crosslinking-density three-dimensional network is formed through the peroxide vulcanizing agent, breakage of molecular chains at high temperature is reduced, thermal aging is delayed, and the ethylene propylene diene monomer sealing strip with excellent aging resistance is prepared.

The invention discloses a corrosion-resistant protective sleeve for an aluminum alloy cable and a preparation method of the corrosion-resistant protective sleeve, and belongs to the field of cable protective sleeves. The corrosion-resistant protective sleeve for the aluminum alloy cable is prepared from the following raw materials in parts by mass: 40 to 50 parts of ethylene propylene diene monomer, 15 to 25 parts of fluorinated silicone rubber, 5 to 10 parts of modified thiolated ethylene-vinyl alcohol copolymer, 8 to 15 parts of metal fluoride nanocrystal, 4 to 8 parts of vulcanizing agent, 3 to 8 parts of plasticizer and 3 to 5 parts of flame retardant. The two rubber matrixes are compounded to form a physical barrier layer to prevent corrosion media and water molecules from permeating, material pores can be filled with the metal fluoride nanocrystals, diffusion channels of the corrosion media are reduced, and hydrophobicity and corrosion resistance are improved through cooperation of the metal fluoride nanocrystals and the fluorinated silicone rubber. The modified thiolated ethylene-vinyl alcohol copolymer can improve the compatibility between rubber matrixes and form coordination with metal ions of the metal fluoride nanocrystals, so that the diffusion path of a corrosive medium is prolonged, and the corrosion of the corrosive medium is synergistically blocked.

The present invention relates to the field of rubber processing, and more specifically, to an EPDM rubber preparation process. The process comprises the following steps: Step 1: heating a plurality of raw materials so that they are in a fluid state and then mixing; Step 2: kneading the rubber raw materials obtained after mixing, and inspecting the kneaded products; Step 3: vulcanizing the inspected raw materials; Step 4: extruding and molding the rubber raw materials transported out after vulcanization, and completing the unloading and packaging. The EPDM rubber preparation process is realized by using EPDM rubber preparation, and the device comprises a molding frame for extruding and molding rubber, a door panel is slid on one side of the molding frame, and a plurality of circular plates are rotated on the molding frame, and a knife capable of cutting the rubber raw materials is slid on the plurality of circular plates. It can destroy the pores in the accumulated rubber raw materials.

The environment-friendly cable ethylene-propylene insulation material comprises the following raw materials: ethylene propylene diene monomer, an elastomer, a reinforcing agent, a flame retardant, a vulcanizing activator, a filler, a plasticizer, an anti-aging agent, a vulcanizing agent and a silane coupling agent. 50-70 parts by mass of ethylene propylene diene monomer rubber; the elastomer is a POE (polyolefin elastomer) of 30-50 parts; the flame retardant is prepared from 30 to 50 parts of nano magnesium hydroxide, 5 to 10 parts of microencapsulated red phosphorus and 3 to 5 parts of zinc borate; and the plasticizer is paraffin oil. According to the ethylene-propylene insulating material, a halogen-free flame-retardant system is combined with an interface modification technology, so that the defects of poor mechanical property and high material toxicity of a traditional material are overcome. The oxygen index is greater than or equal to 38%, the tensile strength is greater than or equal to 10Mpa, and the material is suitable for high-risk mine environments.

The invention relates to the technical field of high-altitude cable protection, in particular to a high-altitude erected cable and an all-weather bird repelling and obstacle removing device thereof.The high-altitude erected cable comprises a conductor, and a refractory fiber belt, a calcined mica tape, an EPR ethylene propylene rubber insulator, a halogen-free low-smoke flame-retardant belt and a sheath are sequentially assembled outside the conductor; metal supporting sleeves are fixedly sleeved on the outer side of the sheath and located on the outer sides of the connecting ends on the two sides. According to the high-altitude erected cable and the all-weather bird repelling and obstacle removing device thereof, by adopting a self-propelled structural design, repelling and obstacle removing can be automatically controlled when dust, impurities, ice and snow and bird flocks are accumulated on the surface of the cable, so that the service life of the cable is greatly prolonged; unmanned automatic maintenance and obstacle removal are adopted, interference and influence of the external environment are avoided, and all-weather operation capacity is achieved; the optical detection probes used for detecting the bending angle of the cable are fixedly assembled at the lower ends of the openings in the two sides of the metal supporting sleeve, durability is high, automatic control can be conducted according to the bending degree of the cable, and operation is more convenient.

The invention relates to the technical field of overhead conductors, and provides a corrosion-resistant overhead insulated conductor and a preparation method thereof. The corrosion-resistant overhead insulated wire sequentially comprises a conductor, an insulating layer and a sheath layer from inside to outside, and raw materials of the sheath layer comprise nitrile rubber, ethylene propylene diene monomer, a compatilizer, an activating agent, an anti-aging agent, filler, a softening agent, a plasticizer, a vulcanizing agent, an accelerant and a reinforcing agent; the preparation method of the reinforcing agent comprises the following steps: A1, cleaning aramid pulp, adding the aramid pulp into a calcium chloride solution, stirring, cleaning and drying to obtain pretreated aramid pulp; a2, mixing the pretreated aramid pulp and phenolic resin to obtain the reinforcing agent. According to the technical scheme, the problem of poor tensile strength of the sheath layer of the corrosion-resistant overhead insulated wire in the prior art is solved.

The invention relates to the field of matt films, in particular to a wear-resistant biaxially oriented polypropylene matt film and a preparation method thereof. The wear-resistant biaxially oriented polypropylene matt film comprises an upper surface matt layer, a middle core layer and a lower surface layer which are sequentially arranged, the upper surface matting layer comprises 45-55 wt% of high-density polyethylene, 42-47 wt% of polypropylene random copolymer and 3-8 wt% of ethylene propylene diene monomer / high-density polyethylene elastomer; the polypropylene random copolymer in the upper surface matting layer is composed of an ethylene-propylene random copolymer chain segment with the leaching temperature T1 belonging to [25, 60] DEG C, an ethylene-propylene block copolymer chain segment with the leaching temperature T2 belonging to [60, 95] DEG C and a homo-polypropylene chain segment with the leaching temperature T3 belonging to [95, 140] DEG C; the content of the ethylene-propylene block copolymer chain segment in the polypropylene random copolymer at the leaching temperature T2 of [60, 95] DEG C is 60-80wt%. By optimizing the material components of the matt layer, the scratch resistance of the matt layer is improved, the problem of powder grinding is reduced, and subsequent processing and production of the BOPP matt film are met.

The present invention relates to an insulating rubber sheath cable repair strip and a preparation method and application thereof. The insulating rubber sheath cable repair strip comprises a reinforcing tensile element and a re-vulcanizable rubber strip, wherein the reinforcing tensile element is arranged at the center of the re-vulcanizable rubber strip; the re-vulcanizable rubber strip comprises: 86-90 parts of chlorinated polyethylene, 10-14 parts of ethylene propylene rubber, 10-14 parts of magnesium oxide, 7-9 parts of flame retardant, 0.7-0.9 parts of antioxidant, 10-14 parts of carbon black, 13-17 parts of white carbon black, 18-22 parts of clay, 10-14 parts of talc, 13-17 parts of plasticizer, 10-14 parts of diisooctyl adipate, 0.7-0.9 parts of paraffin wax, 0.9-1.1 parts of polyethylene wax, 2.3-2.7 parts of vulcanizing agent, and 1.8-2.2 parts of vulcanizing agent. The present invention solves the problems of facilitating the repair of cable sheaths and facilitating production, more effectively saving costs and reducing safety.

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 cables, and provides a high-temperature-resistant flame-retardant cable and a preparation method thereof. The high-temperature-resistant flame-retardant cable comprises a conductor and a flame-retardant outer sheath, the flame-retardant outer sheath is prepared from the following raw materials in parts by weight: 40 to 50 parts of linear low-density polyethylene, 35 to 45 parts of ethylene-vinyl acetate copolymer, 10 to 15 parts of ethylene propylene diene monomer, 15 to 18 parts of modified aluminum hydroxide, 10 to 14 parts of modified magnesium hydroxide, 5 to 8 parts of polyethylene grafted maleic anhydride, 5 to 8 parts of microencapsulated red phosphorus, 2 to 3 parts of silane coupling agent and 0.8 to 1 part of antioxidant. The composite material is prepared from the following components in parts by weight: 0.5-1 part of a light stabilizer, 0.5-1 part of calcium stearate, 0.8-1 part of polyethylene wax and 0.5-0.9 part of carbon nanotubes. According to the cable prepared in the invention, the performance stability of an existing high-temperature-resistant material in a high-temperature environment is improved, and the problems of softening, melting and the like of the cable are avoided.

The invention provides a high-temperature-resistant sealing strip for an automobile and a preparation method thereof, and relates to the technical field of rubber sealing elements. The high-temperature-resistant sealing strip for the automobile is prepared from the following materials in parts by weight: 65 to 85 parts of ethylene propylene diene monomer, 32 to 46 parts of nitrile rubber, 20 to 30 parts of diatomite modified basalt fiber, 16 to 20 parts of dual-modified activated aluminum oxide particles, 6 to 8 parts of zinc oxide, 0.5 to 1.5 parts of antioxidant, 1 to 2 parts of anti-aging agent, 1 to 1.6 parts of vulcanizing agent and 0.8 to 1.2 parts of vulcanization accelerator. According to the high-temperature-resistant sealing strip for the automobile, the raw materials and the proportion are meticulously adjusted, and a multi-layer and multifunctional thermal protection system is formed in the sealing strip through the kieselguhr modified basalt fibers and the double-modified activated aluminum oxide particles; the two complements each other and have a synergistic effect, so that the high-temperature resistance of the sealing strip is remarkably improved.

The invention relates to the technical field of high polymer materials and sealing, in particular to a rubber gasket and a preparation method of the rubber gasket. The preparation method comprises the following steps: enhancing by using an ethylene-vinyl alcohol copolymer (EVOH) with the ethylene content of 29-48%, carrying out compatibility by using a styrene-ethylene-butylene-styrene block copolymer grafted maleic anhydride (SEBS-g-MA) with the grafting rate of more than or equal to 10%, carrying out synergistic reinforcement by using carbon black and nanoscale calcium carbonate, and carrying out premixing, hot-pressing vulcanization and acid environment aging treatment. Through EVOH enhancement, SEBS-g-MA compatibility, filler synergistic reinforcement and process optimization, multiple improvements of compatibility, mechanical properties, barrier property and acid resistance are achieved, key defects of a traditional EPDM gasket are overcome, and the EPDM gasket has remarkable technical advantages and practical value in the high-end sealing field (such as fuel cells and tunnel engineering).

The invention discloses a corrosion-resistant anti-cracking cable sheath material and a preparation method thereof, and belongs to the technical field of cable materials. The sheath material is prepared by adopting ethylene-vinyl acetate rubber and ethylene-propylene-diene monomer rubber as matrixes, adding graphene modified conductive carbon black and self-repairing microcapsules in a specific proportion, and carrying out banburying premixing, open milling feeding, dynamic vulcanization and other multi-step processes. Graphene and carbon black form a stable conductive network according to a specific ratio under the action of a silane coupling agent, urea resin is taken as a wall material of the self-repairing microcapsule, epoxy resin and a curing agent in a core material are in a specific ratio, and the repairing efficiency is ensured. The tensile strength retention rate of the material is greater than or equal to 92% and the elongation at break retention rate is greater than or equal to 88% after the material is aged for 1500 hours in a salt mist environment, the strength recovery rate of microcracks reaches 85% or above after the microcracks are subjected to heat treatment at 70 DEG C for 2 hours, and the material has excellent corrosion resistance, cracking resistance, self-repairing function and static dissipation capacity and is particularly suitable for cable protection in severe environments such as marine transportation and chemical engineering.

The invention relates to the technical field of cables, in particular to a high-flexibility ethylene-propylene insulating rubber material for a charging pile cable and a preparation process. The composite material comprises an ethylene propylene diene monomer, a thermoplastic polyolefin elastomer, an ethylene-butylene copolymer, nanoscale magnesium hydroxide, a silane coupling agent, dicumyl peroxide, a hindered phenol antioxidant and a phosphite antioxidant. The ethylene propylene diene monomer and the ethylene-butylene copolymer form a flexible network skeleton, and the ethylene-butylene copolymer and the thermoplastic polyolefin elastomer are subjected to molecular-level blending, so that the elongation at break and the bending fatigue resistance are improved; silane coupling agent modified nano magnesium hydroxide is chemically bonded with a rubber matrix, so that the flame retardance and thermal aging resistance are enhanced, and the negative influence of filler agglomeration on flexibility is reduced; the compound antioxidant system effectively inhibits thermal oxidation degradation at high temperature, avoids insulation failure, realizes collaborative optimization of high flexibility and high heat resistance, and improves the reliability and applicability of the charging pile cable.

The invention discloses a damping rubber composition for a track fastener and a preparation method thereof. The damping rubber is characterized by being prepared from the following raw materials in parts by weight: 100 parts of composite rubber, 25-35 parts of damping particles, 15-20 parts of sheet structure filler, 5-10 parts of a plasticizer, 5-10 parts of a tackifier, 3-5 parts of high-temperature-resistant fibers, 2-4 parts of a vulcanizing agent, 3-5 parts of an activating agent, 2-2.5 parts of an accelerant and 1-3 parts of an anti-aging agent, the composite rubber is a compound of ethylene propylene diene monomer, natural rubber and nitrile rubber; the damping particles are elastic particles obtained by filling aerogel nanopores with asphalt and a glycidyl methacrylate modified elastomer. The damping particles are dispersed in a rubber system, the activity capacity of a rubber molecular chain is enhanced, remarkable internal friction is generated to consume energy and generate hysteresis deformation, and the damping particles are used for an elastic cushion of a track fastener and have excellent damping performance, ageing resistance and load impact fatigue resistance.

The invention discloses a high and low temperature resistant thermoplastic thermoplastic vulcanizate (TPV) and application thereof. The thermoplastic TPV comprises ethylene propylene diene monomer, polypropylene, a softening agent, an antioxidant, modified fluoroplastic, fluoroplastic master batch, sodium bicarbonate and a cross-linking agent, wherein the modified fluoroplastic is prepared from a modifier, a grafting agent, hydroxyl polyhedral oligomeric silsesquioxane and a fluorine monomer. A grafting agent containing unsaturated double bonds and fluoroplastic are subjected to an addition reaction, triazine and polyhedral oligomeric silsesquioxane functional groups are introduced, and the temperature resistance and mechanical strength of the material are remarkably improved. The TPV provided by the invention has excellent high and low temperature resistance, tensile strength and elongation at break, and good compression set and brittleness temperature performance.

The invention relates to the technical field of cables, and provides an acid and alkali corrosion resistant, rat-proof and ant-proof control cable which comprises eight cable cores, the surfaces of the eight cable cores are wound by polyester tapes to form a wrapping polyester tape layer, the wrapping polyester tape layer is coated with a copper wire braid layer, and the outer surface of the copper wire braid layer is coated with a sheath layer. The cable core comprises a copper conductor and an insulating layer wrapping the surface of the copper conductor. The sheath layer is prepared from the following raw material components in parts by weight: 45-75 parts of polyvinyl chloride resin, 8-18 parts of ethylene propylene diene monomer, 10-18 parts of a filling agent, 6-12 parts of a plasticizer, 20-30 parts of a flame retardant, 4-8 parts of a stabilizer, 2-4 parts of an anti-aging agent, 1-3 parts of a cross-linking agent and 3-5 parts of a rat-proof and ant-proof agent; the polyvinyl chloride resin comprises polyvinyl chloride resin QS-800F and polyvinyl chloride resin QS-1000F. According to the technical scheme, the problem of poor acid and alkali corrosion resistance of the sheath layer material of the rat-proof and termite-proof control cable in the prior art is solved.

The invention discloses a super wear-resistant rubber compound and a preparation method thereof, and belongs to the field of rubber compounds. The rubber compound comprises the following raw materials in parts by mass: 100 parts of a rubber phase, 10-20 parts of white carbon black, 10-15 parts of modified silicon dioxide aerogel, 3-8 parts of a coupling agent, 1.5-3 parts of an anti-aging agent, 1-5 parts of sulfur, 1-3 parts of an active agent, 4-6 parts of an accelerant and 1-3 parts of a cross-linking agent, the rubber phase comprises ethylene propylene diene monomer and butadiene styrene rubber in a mass ratio of (30-40): (60-70); styrene butadiene rubber chain segments are grafted on the surface of the modified silicon dioxide aerogel. The silicon dioxide aerogel can improve the mechanical property of the rubber compound, absorb external stress through micro-deformation and reduce the wear rate of the rubber compound, and after modification treatment, not only can the dispersity and compatibility of the silicon dioxide aerogel be improved, but also the interfacial compatibility between rubber phases can be improved, a physical entanglement network is formed, and the wear resistance of the rubber compound is improved. And integration of filler dispersion and rubber compatibilization is realized.

The invention provides a modified asphalt anti-collapse plugging agent for drilling fluid and a preparation method of the modified asphalt anti-collapse plugging agent, and belongs to the technical field of drilling plugging materials. The modified asphalt anti-collapse blocking agent for the drilling fluid is prepared from the following components in parts by weight: 42 to 68 parts of emulsified asphalt, 5 to 8 parts of chloroprene rubber, 8 to 12 parts of ethylene propylene rubber, 2 to 8 parts of cationic surfactant, 3 to 6 parts of water-soluble silicone oil, 20 to 35 parts of modified nano silicon dioxide, 0.1 to 1 part of carbon fiber, 1 to 3 parts of dispersing agent and 20 to 40 parts of water. The modified asphalt anti-collapse plugging agent prepared by the invention adopts emulsified asphalt, has small instantaneous filter loss and small high-temperature and high-pressure filter loss, and has a good plugging effect; the plugging agent can be easily dispersed in a drilling fluid, has environmental tolerance and high temperature resistance, can be used for plugging nano cracks and macro-pore stratums, can be applied to various complex stratums, is simple in preparation process and is suitable for industrial production.