577 results about "Nitrile rubber" patented technology

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 relates to the field of drag chain cables, in particular to a high-flexibility shielding type drag chain cable and a preparation method thereof. The drag chain cable sequentially comprises a conductor layer, a shielding layer and a sheath layer from inside to outside. The conductor layer is formed by compositely twisting silver-plated copper wires and carbon fibers; the shielding layer comprises an inner shielding layer and an outer shielding layer, the inner shielding layer is wrapped by an aluminum-plastic composite belt, and the outer shielding layer is a tinned copper wire woven mesh. The sheath layer comprises the following components: a modified polyurethane elastomer, an ethylene-vinyl acetate copolymer, nitrile rubber, a composite flame retardant, a plasticizer, an antioxidant, a light stabilizer and a lubricant. Through the structural design of the conductor layer, the shielding layer and the sheath layer and the optimization of the material formula of the sheath layer, the problems that an existing drag chain cable is insufficient in strength and flexibility, limited in shielding effectiveness, poor in wear resistance and weather resistance and difficult to consider both flame retardance and mechanical property are solved.

The invention relates to a sealing structure of a flexible waterproof FFC wire harness and a forming process, and belongs to the technical field of automobile electronic wire harness manufacturing, the sealing structure comprises an FFC wire, a connector shell, a sealing ring and a blanking cap, the sealing ring is made of a fluororubber and hydrogenated butadiene-acrylonitrile rubber composite modified material, the connector shell is made of a glass fiber reinforced PP or PA66 material, and the blanking cap is made of a glass fiber reinforced PP or PA66 material. Under the cooperation of a vulcanizing agent system and an anti-aging agent system, double-material injection molding is adopted for integral forming, and double sealing is achieved through interference fit of the blanking cap and the sealing ring. The waterproof grade of the FFC wire harness reaches IP67, the weight is reduced, the size is reduced, the production efficiency is improved, and the FFC wire harness can be widely applied to wet area scenes such as automobile door lines, ceilings and seats, has the cost advantage and the environmental protection benefit, and has remarkable industrial application value.

The invention relates to the technical field of cables, and provides a high-toughness corrosion-resistant medium-voltage power cable, which comprises a conductor, and an insulating layer, a shielding layer, an armor layer and a sheath layer which are sequentially arranged outside the conductor, the sheath layer comprises the following components in parts by weight: 70-100 parts of polyvinyl chloride, 30-40 parts of nitrile rubber, 10-15 parts of a flame retardant, 15-20 parts of a plasticizer, 1-3 parts of an antioxidant, 5-10 parts of a filler, 2-4 parts of a heat stabilizer, 1-3 parts of a compatilizer and 0.5-2 parts of a cross-linking agent; the filler is prepared from the following raw materials in parts by weight: 100 parts of calcium carbonate, 20 to 24 parts of 2-ethylhexyl acrylate and 6 to 10 parts of acrylic acid. According to the technical scheme, the problem of poor corrosion resistance of the medium-voltage power cable in the prior art is solved.

The utility model discloses a high-performance high-temperature-resistant oil-stain-resistant anti-interference medium-voltage power cable, and the power cable comprises a cable core which is formed by twisting a plurality of insulated shielding wire cores. A gap of the cable core is filled with thermoplastic polyurethane elastomer rubber; the cable core is wrapped by a superconducting silicon carbide fiber tape shielding wrapping layer, and the superconducting silicon carbide fiber tape shielding wrapping layer is wrapped by an LCP high-molecular liquid crystal polymer high-temperature-resistant fireproof layer in an extruded mode. A graphene aerogel layer is extruded outside the LCP macromolecular liquid crystal polymer high-temperature-resistant fireproof layer, a polysulfonamide fiber braid layer is lapped outside the graphene aerogel layer, a polyphenylene sulfide fiber tape is coated outside the polysulfonamide fiber braid layer through a semi-conductive adhesive, an armor layer is arranged outside the polyphenylene sulfide fiber tape, and the armor layer is wrapped outside the LCP macromolecular liquid crystal polymer high-temperature-resistant fireproof layer. And a hydrogenated butadiene-acrylonitrile rubber outer sheath is extruded outside the armor layer. According to the utility model, normal operation of a line can be ensured in a complex and severe environment for a long time, and the service life of the cable is greatly prolonged.

The invention relates to the technical field of concrete, and provides ultra-high performance concrete and a preparation method thereof. The ultra-high performance concrete is prepared from the following raw materials in parts by weight: 70 to 80 parts of Portland cement, 15 to 25 parts of silica fume, 5 to 10 parts of limestone, 2 to 5 parts of metakaolin, 100 to 120 parts of quartz sand, 24 to 42 parts of hydroxylated steel fiber, 6 to 24 parts of carboxylic butadiene-acrylonitrile latex, 2.0 to 3.5 parts of a water reducing agent and 15 to 22 parts of water. Through the technical scheme, the problem of poor chloride ion permeability resistance of the ultra-high performance concrete in the prior art is solved.

The invention belongs to the field of industrial hosts, and discloses an intelligent industrial data analysis and processing host which comprises a support and further comprises a machine body, a collection wire, a detection head, a hollow cylinder, an L-shaped supporting plate, a protection assembly, a transmission driving assembly and an impact fixing assembly. Through the synergistic effect of multiple structures such as a nitrile rubber shock pad, a limiting plate, a limiting groove and a first spring, the negative effects such as deviation and component looseness caused by vibration of a host are relieved, vibration collection stability is guaranteed, meanwhile, the protection assembly can protect the detection head during external impact, and the detection efficiency is improved. The modular design and the gas circuit sealing structure further improve the universality of the equipment and the reliability of data acquisition, so that the functions of vibration buffering, accurate acquisition, impact protection and automatic reset of the host are realized through the linkage of the protection assembly, the transmission driving assembly, the hollow cylinder and the detection head, the service life of the host is prolonged, and the data acquisition accuracy is improved.

The invention relates to the technical field of conveying belts, discloses an impact-resistant flame-retardant rubber conveying belt for an underground mine and a preparation method of the impact-resistant flame-retardant rubber conveying belt, and aims to solve the problems of matrix embrittlement caused by filling of a flame retardant and easiness in delamination under impact. The conveyor belt comprises a covering rubber layer, a gradient buffer layer and a framework core layer from top to bottom. The covering rubber layer adopts an NR / BR / CPE blending matrix, and a superfine flame-retardant system and a liquid nitrile rubber toughening phase are added; the gradient buffer layer contains directionally arranged aramid short fibers to smooth the modulus. The preparation method relates to a multi-stage mixing and controlled cooling vulcanization process. According to the invention, the balance of flame retardance and physical properties is realized, the dynamic impact-resistant life of the belt body is remarkably prolonged by constructing a multi-stage energy dissipation system, the running temperature rise is effectively reduced, delamination is prevented, and the long-term service stability under a high-load working condition is ensured.

The invention relates to the technical field of adhesives, and particularly discloses an adhesive for repairing a glass fiber reinforced plastic pipeline and a preparation process. The invention relates to an adhesive for repairing a glass fiber reinforced plastic pipeline. The adhesive is prepared from the following raw materials: modified bisphenol A epoxy resin, a curing agent, a glass fiber reinforced filler, a silane coupling agent, phenyl glycidyl ether, hydroxyl-terminated nitrile rubber and an antioxidant 1076, the modified bisphenol A type epoxy resin is prepared by grafting and modifying bisphenol A type epoxy resin through amino-terminated polyether; the glass fiber reinforced filler is prepared from hydroxylated glass fibers and a graphene-carbon nanotube compound through covalent grafting. The adhesive can be used for emergency repair of glass fiber reinforced plastic pipelines, has the advantages of high low-temperature curing speed, high bonding strength and good durability, can effectively avoid cracking and leakage of repaired parts, and is adaptive to low-temperature and high-pressure complex repair working conditions. The preparation process is simple and convenient to operate and high in controllability, the adhesive with uniform performance can be stably prepared, and the repair efficiency and repair quality are guaranteed.

This application relates to the field of brake friction material technology, specifically disclosing a brake pad compound, a synthetic brake pad, its preparation method, and its application. The brake pad compound provided in this application comprises the following components in parts by weight: 10-13 parts liquid nitrile rubber, 8-12 parts modified phenolic resin, 20-40 parts reinforcing fiber, 8-12 parts calcium hydroxide, 1-3 parts light magnesium oxide, 10-15 parts calcium carbonate whiskers, 2-5 parts calcined alumina, 10-15 parts graphite, 5-10 parts heavy calcium carbonate, 0.8-1.2 parts sulfur, and 0.8-1.2 parts accelerator; the reinforcing fiber comprises steel fiber, aramid fiber, and mineral fiber in a weight ratio of (10-25):1:(5-15). The brake pad compound and the method for preparing the synthetic brake pad provided in this application can produce synthetic brake pads with good frictional stability and small batch-to-batch variations, resulting in high safety and reliability when used in traffic vehicle braking systems.

The invention discloses a hydrogenated butadiene-acrylonitrile rubber composite material for cryogenic heat preservation and a preparation method thereof in the field of polymer composite materials, and the composite material is characterized in that zirconium-silicon composite modified hydroxyapatite and boron-nitrogen co-doped mesoporous alumina are introduced, so that the mechanical property and heat preservation effect of the material in a low-temperature environment are remarkably improved. The zirconium-silicon oxide network is constructed on the surface of hydroxyapatite by adopting a sol-gel method, and the doped mesoporous structure with the high specific surface area is obtained by adopting alkoxide as a precursor through hydrothermal treatment and calcination. When the rubber is mixed, the functional filler is dispersed at a high temperature, and then the plasticizer is added to ensure uniform distribution of the filler. The obtained composite material has excellent tensile strength, elongation at break and low heat conductivity coefficient at the liquid nitrogen temperature, and is suitable for the cryogenic thermal insulation fields of hydrogen energy storage and transportation, aerospace sealing and the like. All the raw materials are commercially available chemicals, the process is controllable, and industrial production is easy.

To provide a positive electrode with excellent resistance characteristics and superior mechanical strength. [Solution] The positive electrode mixture layer comprises a binder containing a positive electrode active material and hydrogenated carboxylated nitrile butadiene rubber, comprising 20% ​​to 40% by weight of a first structural unit derived from acrylonitrile represented by a specific formula, based on 100% by weight of the rubber; 30% to 78% by weight of a second structural unit containing a hydrogenated butadiene-derived structural unit represented by a specific formula and a butadiene-derived structural unit represented by a specific formula; 2% to 10% by weight of a third structural unit represented by a specific formula; and 0% to 20% by weight of a fourth structural unit represented by a specific formula, wherein the hydrogenated butadiene-derived structural unit represented by the specific formula is present in an amount of 90% or more and less than 100% by weight relative to 100% by weight of the second structural unit, and the butadiene-derived structural unit represented by the specific formula is present in an amount of more than 0% and 10% or less relative to 100% by weight of the second structural unit.

The invention belongs to the technical field of coatings, and particularly relates to textured high-toughness polyester resin as well as a preparation method and application thereof. The textured high-toughness polyester resin is prepared from the following raw materials: polyol, polyacid, carboxyl silicone oil, a dynamic cross-linking agent, an acidolysis agent and carboxyl-terminated nitrile rubber. The dynamic cross-linking agent contains at least two carboxyl groups and one disulfide bond. Through the synergistic effect of the dynamic cross-linking agent, the carboxyl silicone oil and the carboxyl-terminated nitrile rubber, the problem that a traditional texture type powder coating is insufficient in toughness is solved, and the impact resistance, the flexibility, the low-temperature mechanical property and the self-repairing capacity of a coating are remarkably improved while clear textures are kept.

The invention discloses a high-temperature-resistant low-friction-coefficient low-abrasion sealing material and a preparation method thereof, and belongs to the technical field of sealing materials. The sealing material is prepared from the following raw materials in parts by mass: 60 to 80 parts of hydrogenated butadiene-acrylonitrile rubber, 20 to 40 parts of hydrogenated carboxyl butadiene-acrylonitrile rubber, 40 to 50 parts of carbon black N234, 4 to 6 parts of modified carbon fiber, 2 to 4 parts of modified hexagonal boron nitride, 3 to 5 parts of liquid polybutadiene, 3 to 4 parts of composite vulcanizing agent, 2 to 3 parts of zinc oxide, 1 to 2 parts of rubber anti-aging agent 445, 1 to 2 parts of anti-aging agent MB, 0.2 to 0.5 part of accelerant BZ and 0.5 to 2 parts of stearic acid. The modified carbon fiber is obtained by growing molybdenum disulfide on the surface of carbon fiber in situ and performing amination modification, the modified hexagonal boron nitride is obtained by performing grafting reaction on hydroxylated hexagonal boron nitride and an epoxy silane coupling agent, and the sealing material provided by the invention has high wear resistance and high temperature resistance.

The invention relates to the technical field of building materials, and discloses a low-temperature environment-friendly processing technology of multistage molding powder, which comprises the following steps: mixing fluorine-modified phenolic resin, hydroxylated nitrile rubber and filler to obtain a premix; extruding and pelletizing the premix through a double-screw extruder to obtain master batches; crushing, grinding and grading the master batch, and collecting powder; putting the powder into a fluidized bed, and spraying fumed silica to obtain primary molding powder; and screening molding powder without anti-corrosion level, first-level anti-corrosion, second-level anti-corrosion, third-level anti-corrosion and fourth-level anti-corrosion. The prepared molding powder is comprehensively improved in heat insulation, corrosion resistance, adhesive force and weather resistance, the process adopts low-temperature processing design, the green production concept is met, the molding powder can be widely adapted to different corrosion environments and use requirements, and the molding powder has remarkable practical value and popularization prospects.

This utility model relates to a meat grinder reducer and a meat grinder motor assembly using the reducer. It includes a reducer housing, within which a reduction shaft and an output shaft are rotatably mounted. The reducer housing has an opening at its left end, and the left end of the reducer housing shares a flange end cover with the meat grinder motor. The motor shaft mounting hole and the output shaft are coaxially aligned. A recessed cavity is formed at the lower end of the joint between the flange end cover and the reducer housing. A first gear is located above the recessed cavity and partially enters it. A rubber strip is attached to the bottom surface of the recessed cavity. A rubber ring groove is also provided at the joint between the flange end cover and the reducer housing, and an end cover sealing ring is installed in the rubber ring groove. The beneficial effects of this utility model are: the recessed cavity is used to accumulate lubricating oil; the nitrile rubber strip above the joint at the bottom of the recessed cavity, together with the original end cover sealing ring, forms a double sealing structure, greatly enhancing the reliability of the seal and effectively preventing lubricating oil leakage.

Provided in the present invention are a functionalized monomer, a raw material composition containing same for hydrogenated nitrile butadiene rubber, and a preparation method for hydrogenated nitrile butadiene rubber. In the functionalized monomer, a hydroxyl group, an ether group, an ester group and a long-chain alkyl branched structure are integrated into one macromolecular chain; and the functionalized monomer subsequently serves as a raw material monomer for preparing hydrogenated nitrile butadiene rubber, which can obtain hydrogenated nitrile butadiene rubber having better cold resistance and oil resistance.

The invention discloses hydrogenated butadiene-acrylonitrile rubber which is composed of hydrogenated butadiene-acrylonitrile rubber raw rubber, a reinforcing filling system, a protection system, a vulcanization system, a processing aid and a key oil-resistant synergistic enhancement system, and the oil-resistant synergistic enhancement system is formed by compounding fluorine polymer powder and organic montmorillonite. The hydrogenated butadiene-acrylonitrile rubber has the advantages that the hydrogenated butadiene-acrylonitrile rubber has excellent high-temperature aging resistance and balanced physical and mechanical properties, and the resistance of the hydrogenated butadiene-acrylonitrile rubber to various insulating oils such as mineral oil, natural ester and synthetic ester is greatly improved through the synergistic effect of physical obstruction and extension of diffusion paths of the nanosheet layers; the method is especially suitable for rubber products which are required to work stably for a long time in a complex insulating oil medium environment.

The invention discloses low-temperature oil-resistant hydrogenated butadiene-acrylonitrile rubber as well as a preparation method and application thereof, and the rubber is prepared from the following raw materials in parts by weight: 100 parts of hydrogenated butadiene-acrylonitrile rubber, 8-20 parts of a polyether plasticizer, 50-65 parts of carbon black, 5-8 parts of modified nano SiO2, 2-4 parts of an anti-aging agent, 5.8-6.5 parts of a peroxide vulcanizing agent and 2-2.8 parts of a vulcanizing aid. The acrylonitrile content in the hydrogenated butadiene-acrylonitrile rubber is greater than or equal to 37%, and the residual double bond content is not greater than 4.5; through the design of the content of acrylonitrile and double bonds in raw rubber, a low-temperature-resistant plasticizer TP-90B is used as a softener to regulate the rigidity of a main chain structure of the raw rubber with high acrylonitrile content and improve the low-temperature performance, and is matched with modified nano SiO2 to form an organic-inorganic interpenetrating network, so that excellent permeation resistance and diffusivity of vulcanized rubber are ensured, and the oil pressure change resistance is improved; and finally, a peroxide vulcanization system in which a vulcanization aid participates is matched to form a complete cross-linked structure, so that oil resistance and low temperature resistance are realized, excellent medium compatibility with low-viscosity synthetic oil is ensured, good compression set at a low temperature of-40 DEG C is ensured, and a rubber material with long-term heat aging resistance is stable.

The invention relates to the technical field of high-performance polymer materials, in particular to low-dielectric and high-temperature-resistant modified cyanate ester resin and a preparation method thereof. Advantages and characteristics of bisphenol A type cyanate ester monomers and bisphenol M type cyanate ester monomers are combined, and the dielectric property and the thermal stability are remarkably improved. Diallyl bisphenol A is introduced as a network structure modifier, the phenolic hydroxyl group of the diallyl bisphenol A adjusts the curing reaction rate, and the allyl and bisphenol A structures of the diallyl bisphenol A finely regulate and control the rigid-flexible balance of a cross-linked network through chemical copolymerization, so that the curing process is controllable and the final network structure is optimized. Meanwhile, a toughening system is innovatively designed, epoxy-terminated liquid nitrile rubber is adopted for toughening, stable micron-scale rubber particles are formed in a resin matrix in a chemical bonding mode, and the fracture toughness is improved. The modified resin has excellent dielectric properties, high heat resistance and a wide process window, and meets the strict requirements of a new generation of low observability aircrafts on a bearing-stealth integrated composite material matrix.

The invention belongs to the technical field of batteries, and particularly discloses a secondary battery, a preparation method thereof and a power utilization device. The secondary battery comprises a positive pole piece, an isolating membrane and a negative pole piece, the positive pole piece comprises a positive current collector and a positive membrane layer located on at least one side surface of the positive current collector, the positive membrane layer comprises a positive active material, a carbon nanotube, graphene, hydrogenated butadiene-acrylonitrile rubber and a modified compound of the hydrogenated butadiene-acrylonitrile rubber, and the graphene has a sheet structure. A carbon nano tube is connected between the graphene with the sheet structure, and a plurality of holes are formed in the surface of the graphene with the sheet structure. According to the design mode provided by the invention, the direct-current resistance of the battery is reduced by improving the conductivity of the pole piece.

The present application belongs to the technical field of carbon fiber composite materials, and particularly relates to a carbon fiber composite material with high-frequency damping performance and a preparation method thereof. Through multi-component synergistic modification of an epoxy resin matrix, a nitrile rubber composition and a boron nitride composition, combined with carbon fiber surface treatment and a segmented curing process, a multi-scale damping energy dissipation network is constructed. The material exhibits excellent damping performance in a high-frequency vibration environment, while also having high mechanical strength and interfacial bonding force, which can significantly reduce the damage risk caused by vibration transmission of sports equipment, and is suitable for high-end sports equipment field, promoting the industrial application of carbon fiber composite materials in high-frequency damping scenarios.

The present application relates to the technical field of cable, in particular to a kind of anti-aging cable and preparation method thereof.The cable includes conductor, crosslinked polyethylene insulation layer, shielding layer and sheath layer from inside to outside.The sheath layer is prepared by soft polyvinyl chloride resin, butyronitrile rubber, silicon dioxide, silane coupling agent and epoxidized branched modified nano titanium dioxide.Epoxidized branched modified nano titanium dioxide is branched modified nano titanium dioxide by using epoxypropanol and epoxide compound containing naphthalene ring structure, and then modified by epoxidation of epichlorohydrin.Epoxidized branched modified nano titanium dioxide significantly improves the anti-UV aging performance of the cable, reduces the yellowing degree under long-term outdoor exposure conditions, so that the cable has longer service life and higher safety and reliability, and is suitable for various outdoor harsh environments.

This utility model discloses a fracture-resistant bolt connection pair structure for long-span steel bridges, including a bolt body, an anti-loosening nut assembly, an anti-corrosion washer assembly, a first steel bridge connection plate, and a second steel bridge connection plate. This utility model relates to the field of steel bridge connection structure technology. This fracture-resistant bolt connection pair structure for long-span steel bridges forms a dual stress dispersion structure through a tapered connector between the bolt head and the bolt segment, and four U-shaped stress relief grooves on the bolt segment. This significantly reduces the stress concentration coefficient at the bolt connection, preventing fatigue crack initiation under long-term alternating loads. Simultaneously, the main nut and auxiliary nut, in conjunction with an annular boss, compress the nitrile rubber elastic bushing, continuously compensating for preload attenuation caused by vibration, achieving a preload retention rate of over 90%. This solves the problem of uneven bolt stress caused by loosening of traditional nuts. It ensures the fracture-resistant performance of the bolt connection pair from both "fatigue resistance" and "loosening prevention" dimensions, meeting the core stress requirements of long-span steel bridges.

The invention belongs to the technical field of gloves, and particularly relates to a preparation method of low-carbon environment-friendly bio-based nylon gloves, which comprises the following steps: S1, uniformly stirring a basic sizing material and an auxiliary agent according to a ratio, the sizing material composition being selected from one of a butadiene-acrylonitrile rubber composition, a latex composition and a polyurethane rubber composition; s2, the bio-based nylon yarn serves as a core raw material and is matched with at least one kind of yarn of polyester yarn, nylon yarn and anti-cutting yarn, the glove liner is formed through knitting by a computer knitting machine, and the glove liner is arranged on the hand mold in a sleeving mode. The bio-based nylon wires are adopted as core raw materials of the glove inner container, traditional petroleum-based nylon is replaced, dependence on non-renewable fossil resources is reduced, carbon emission in the full life cycle of production is reduced, and the requirements for low carbon and environmental protection are met.

The present application relates to a kind of high adhesive composite material for rubber dam and its preparation method, it is related to rubber dam technical field, wherein the high adhesive composite material for rubber dam includes the weatherproof layer of outer layer, the reinforcing layer of middle, inner layer self-repairing layer, by mass fraction, the weatherproof layer includes 90-110 parts high saturated nitrile rubber, 23-28 parts carbon black N550, 3-8 parts nano TiO2, 1-3 parts antioxidant 1010, 2-3 parts of dicumyl peroxide, the reinforcing layer includes 60-80 parts of ethylene-propylene-diene rubber, 25-35 parts of butadiene-styrene rubber, 13-15 parts, nylon fiber, 10-12 parts aramid fiber, 12-15 parts carbon black, 0.5-1.5 parts graphene, 1-2 parts of sulfur, 0.5-1.5 parts of accelerator CZ, the self-repairing layer includes 90-100 parts of silicone rubber, 5-10 parts nano SiO2, 5-8 parts self-repairing agent, 0.1-0.3 parts dispersant.The high adhesive composite material for rubber dam of the present application has good adhesion, can repair small crack in time, prevent the further expansion of crack.

This application provides a rubber composition for stator lining and a motor assembly, relating to the field of rubber material technology. The rubber composition for stator lining, by weight, comprises: 100 parts of nitrile rubber, 10-14 parts of plasticizer, 60-70 parts of reinforcing component, 1-5 parts of silane coupling agent, and 10-15 parts of vulcanizing component; wherein, based on the weight of the nitrile rubber, the acrylonitrile content in the nitrile rubber is 30%-40%. The technical solution of this application can effectively solve the problems of insufficient adhesion strength and poor interfacial bonding stability between the stator lining layer and the metal housing in the prior art, which leads to cracking and delamination of the stator during use.

The invention belongs to the technical field of grinding wheels, and particularly relates to an AMOLED display glass edging grinding wheel binding agent, an edging grinding wheel and a preparation method of the edging grinding wheel. The grinding wheel binding agent comprises, by mass, 50-60 parts of a Cu-Sn alloy metal phase, 20-30 parts of a hydrogenated butadiene-acrylonitrile rubber nano rubber phase, 5-10 parts of nano aluminum oxide reinforcing filler, 3-5 parts of a molybdenum disulfide lubricant and 2-3 parts of a titanium hydride sintering aid. The invention further provides a formula and a preparation method of the grinding wheel. According to the method, the defects of an existing process are overcome, a nano rubber phase of hydrogenated nitrile rubber is combined with a Cu-Sn alloy metal phase, a flexible composite binding agent with flexible buffering and rigid supporting functions is formed, and the effects of buffering grinding vibration and reducing edge cracking are achieved.

The present application relates to a kind of low-temperature-resistant oil-resistant damping rubber composite material for outdoor engineering and its preparation method, belong to damping rubber modification technical field.The low-temperature-resistant oil-resistant damping rubber composite material for outdoor engineering described in the present application is prepared by high-vinyl polybutadiene rubber, butyl rubber, flocculation butyl nitrile rubber / oxidized carbon nanotube composite raw rubber and auxiliary mixing co-vulcanization.The vinyl content of high-vinyl polybutadiene rubber is 83-85%, Mn is 430-470, and the relative molecular mass distribution index is 2.0-2.5.The low-temperature-resistant oil-resistant damping rubber composite material for outdoor engineering described in the present application has a wider damping temperature range, excellent low-temperature damping performance, mechanical properties and oil resistance;Meanwhile, a simple and convenient preparation method is provided.

This invention relates to the field of rubber hydrogenation, and discloses a stirred tank reactor and its application in rubber hydrogenation, as well as a batch hydrogenation method for nitrile rubber. The stirred tank reactor includes a cylindrical body and a stirrer and hollow finger-shaped baffles placed inside the body. The stirrer includes a hollow stirring shaft and a stirring paddle mounted on the shaft. A hydrogen inlet is located at the top of the hollow stirring shaft, and an annular gas distributor is located at the bottom. The hollow finger-shaped baffles include a hollow straight tube and at least two short, downward-sloping straight tubes arranged along the bottom of the tube. The bottom of the hollow straight tube is connected to a hydrogen inlet pipe at the bottom of the cylindrical body. The multiple hollow finger-shaped baffles within the stirred tank reactor enable good dispersion and mixing of hydrogen in the rubber solution, and, together with the hollow stirring shaft and gas distributor, achieve a top-to-bottom self-circulation of hydrogen in the gas phase space within the reactor, thereby improving the hydrogenation efficiency of the rubber hydrogenation reaction.