31results about How to "Good impact elasticity" patented technology

A method for producing modified polymer rubber, comprising the steps of: (1) making a conjugated diene monomer or its combination with an aromatic vinyl monomer, in a hydrocarbon solvent, in an alkali metal catalyst or specified In the presence of an alkali metal compound, carry out polymerization to form an active polymer with an alkali metal end group; and (2) couple the resulting active polymer with an alkali metal end group to a prescribed isocyanurate compound or to a prescribed The combination of reagents is carried out in a hydrocarbon solvent.

The invention discloses a wear-resistant and aging-resistant cable sheath material. The material is prepared from, by weight, 40-60 parts of ethylene propylene diene monomer rubber, 15-30 parts of polyamide 66, 10-20 parts of modified white mica powder, 2-5 parts of a wear-resisting auxiliary agent, 10-20 parts of semi-reinforced carbon black, 1-4 parts of a flame-retardant auxiliary agent, 1-2 parts of N-tertiary butyl-2-benzothiazole sulfenamide, 2-4 parts of N, N'-m-phenylene dimaleimide, 3-8 parts of stearic acid, 0.5-1 part of zinc dibutyl dithiocarbamate, 0.5-1 part of an anti-aging agent DPPD, 2-5 parts of white oil and 2-3 parts of fortifier DH-3. The wear-resistant and aging-resistant cable sheath material is good in mechanical strength, wear resistance, aging resistance, weatherability, impact elasticity, chemical corrosion resistance and excellent in electrical insulation property, and meanwhile the modified white mica powder is adopted, so that the processing property of the ethylene propylene diene monomer rubber is improved, and the obtained cable sheath material can be used in environments with various climatic conditions.

The invention discloses a rubber magnetic strip used under low temperature and a preparation method thereof. The rubber magnetic strip consists of the following ingredients in percentage by mass: 85-95% of ferrite magnetic powder, 4-14% of ethylene propylene rubber and 1-3% of addition agent, wherein the addition agent comprises plasticizer, coupling agent, heat stabilizer and lubricating agent. The preparation method comprises the steps of high-speed blending, mixing, forming and cutting for packaging. The ethylene propylene rubber is used as a carrier for replacing the traditional chlorinated polyethylene, so that the prepared rubber magnetic strip is excellent in ageing-resistant performance, good in impact elasticity, good in chemical resistance, free of halogen, more environmental friendly and unlikely to embrittle and break when being used under low temperature.

The invention discloses a flame-retardant building power sheath material and a preparation method thereof. The flame-retardant building power sheath material is prepared from the following raw materials in parts by weight: 21-38 parts of linear low density polyethylene, 15-25 parts of SG-2 type polyvinyl chloride resin, 16-22 parts of methylpentachlorostearate, 10-15 parts of quartz sand, 14-23 parts of semi-reinforced carbon black, 10-20 parts of lithium base bentonite, 11-15 parts of triphenyl phosphate, 33-36 parts of chlorinated paraffin, 10-20 parts of brominated polystyrene, 3-9 parts of attapulgite, 6-10 parts of a light screening agent, 2-6 parts of an antioxidant, 5-8 parts of a flame retardant and 2-6 parts of a stabilizer. According to the sheath material disclosed by the invention, the main body consists of linear low density polyethylene and lithium base bentonite, and SG-2 type polyvinyl chloride resins, methylpentachlorostearate, quartz sand, semi-reinforced carbon black, triphenyl phosphate, chlorinated paraffin, brominated polystyrene and attapulgite are added, so that the obtained cable sheath material has the advantages of high flame-retardant property, short burning distance and fast self-extinguishing time. The preparation process is simple and easy to operate.

The invention discloses an elastic rubber material applicable to work at a high temperature. The elastic rubber material is prepared from, by weight, 1.6-2 parts of Arabic gum, 1-2 parts of zinc dialkyl dithiophosphate, 1-1.4 parts of accelerant DM, 2-3 parts of epoxy tall butyl oleate, 1-1.4 parts of hexamethyl cyclotrisiloxane, 24-27 parts of polyacrylonitrile, 12-13 parts of graphite, 3-4 parts of coal ash microbeads, 0.7-1 part of lauryl sodium sulfate, 42-55 parts of liquid nitrile rubber, 0.6-1 part of methacrylic acid, 52-60 parts of chemigum, 20-25 parts of butadiene styrene rubber, 23-25 parts of coking coal powder, 4-5 parts of urea, 8-11 parts of carbon black, 14-17 parts of aluminium nitride and 2-3 parts of thiuram. The prepared rubber material is good in stability, high in thermal conductivity, capable of bearing the high temperature, free of deformation and damage, meanwhile good in strength, good in chemical corrosion resistance, good in impact elasticity, high in wear resistance and long in service life.

The present invention relates to sealing rubber assembly for booster of automobile brake system and its making process. The materials include styrene butadiene rubber, carbon black, dioctyl phthalate, indirectly prepared zinc oxide, stearic acid, antiager, sulfur S-80, vulcanizing agent DTDM and promoter in certain weight proportion. The making process includes mixing the materials and synthesizing the rubber in a Banbury mixer; roll mixing the rubber material in a blending roll to form and vulcanizing in a vulcanizer at the pressure of 120-160 Kgf / sq cm and temperature of 190-200 deg.c for 80-100 sec. The product of the present invention has high tensile strength, great elongation, high tear strength, etc.

The invention discloses a stink and wear resistant rubber pad. The stink and wear resistant rubber pad is made from, by weight, 3-5 parts of styrene butadiene rubber, 2-4 parts of white carbon black, 3-5 parts of a promoter, 4-6 parts of a foaming agent, 9-16 parts of ethylene propylene diene monomer, 6-10 parts of naphthenic oil and 2-4 parts of zinc oxide. The stink and wear resistant rubber pad has the advantages of increase of the wear resistance of soles, prolonged service life, simple material and low cost; and the ethylene propylene diene monomer is used as one of the raw materials, so the stink resistance of the rubber pad is very good, the impact elasticity is good, and the market prospect is very wide.

There is provided a process for producing a both end-modified diene polymer rubber comprising the steps of: (1) polymerizing a conjugated diene monomer or a combination thereof with an aromatic vinyl monomer in the presence of a compound represented by the following formula (1) to produce an alkali metal end-carrying active polymer, and (2) reacting the alkali metal end-carrying active polymer with an amine compound, a ketone compound, an acrylamide compound, a heterocyclic compound or a silyl compound represented by specific formulas, respectively: R-(CH2)n-X-M (1) wherein R is a functional group containing a substituent group-carrying nitrogen atom, X is a saturated or unsaturated hydrocarbon group comprising from 0 to 10 conjugated diene monomer units or aromatic vinyl monomer units, n is an integer of from 1 to 10, and M is an alkali metal.

The invention discloses a rubber magnetic strip used under low temperature and a preparation method thereof. The rubber magnetic strip consists of the following ingredients in percentage by mass: 85-95% of ferrite magnetic powder, 4-14% of ethylene propylene rubber and 1-3% of addition agent, wherein the addition agent comprises plasticizer, coupling agent, heat stabilizer and lubricating agent. The preparation method comprises the steps of high-speed blending, mixing, forming and cutting for packaging. The ethylene propylene rubber is used as a carrier for replacing the traditional chlorinated polyethylene, so that the prepared rubber magnetic strip is excellent in ageing-resistant performance, good in impact elasticity, good in chemical resistance, free of halogen, more environmental friendly and unlikely to embrittle and break when being used under low temperature.

The invention relates to an improved type abrasion resistant rubber which is prepared from the following raw materials in parts by weight: 20-35 parts of ethylene propylene diene rubber, 10-20 parts of nanometer reinforcing agents, 2-6 parts of vulcanization accelerators, 4-6 parts of zinc oxide, 5-9 parts of coupling agents, 8-14 parts of barium sulfate, 8-11 parts of vulcanizing agents and 8-12 parts of vaseline. The improved type abrasion resistant rubber disclosed by the invention has the advantages of very excellent ageing resistant property, chemical corrosion resistance, and better impact elasticity.

The invention discloses a high-performance cable sheath material for building engineering and a preparation method of the high-performance cable sheath material. The high-performance cable sheath material is prepared from 22 to 35 parts of methyl vinyl phenyl raw silicone rubber, 15 to 25 parts of linear low density polyethylene, 16 to 22 parts of trioctyl trimellitate, 10 to 15 parts of kaolin, 15 to 22 parts of calcined clay, 10 to 20 parts of hydrogenated butadiene-acrylonitrile rubber, 11 to 15 parts of dibutyl maleate, 33 to 36 parts of organic silicon resin, 10 to 20 parts of nitrocellulose, 3 to 9 parts of ethylene-chlorotrifluoroethylene copolymer, 6 to 10 parts of stabilizer, 2 to 6 parts of antiager, 5 to 8 parts of fire retardant and 2 to 6 parts of plasticizer. According to thehigh-performance cable sheath material for the building engineering, disclosed by the invention, the methyl vinyl phenyl raw silicone rubber and the hydrogenated nitrile-butadiene rubber are used asa main body, and the linear low density polyethylene, the trioctyl trimellitate, the kaolin, the calcined clay, the dibutyl maleate, the organic silicon resin, the nitrocellulose and the ethylene-chlorotrifluoroethylene copolymer are added, so that the obtained cable sheath material has the advantages of high flame retardant performance, short burning distance and short self-extinguish time; in addition, the preparation process is simple and is easy to operate.

The invention relates to a formula of an ozone-resistant rubber part. The formula of the ozone-resistant rubber part is characterized by comprising the following components in parts by weight: 75 parts of chloroprene rubber, 25 parts of butadiene-styrene rubber, 100 parts of ethylene propylene rubber, 3 parts of a plasticizer, 1 part of white carbon black, 1 part of zinc oxide, 2 parts of an antiager, 3 parts of polypropylene cellulose, 12 parts of an antioxidant, 2 parts of fibers, 3 parts of modified coal ash, 10 parts of epichlorohydrin rubber, 12 parts of polyamide wax micropowder, 5 parts of polycaprolactone, 3 parts of dibenzothiazyl disulfide and 5 parts of paraffin. According to the formula of the ozone-resistant rubber part provided by the invention, a rubber main material which is good in ozone resistance is selected and meanwhile, the antiager and paraffin which are good in ozone resistance are further used in the formula, so that the ozone resistance of the ozone-resistant rubber part for a transformer is improved. The ozone-resistant rubber part provided by the invention is simple in processing process, the raw materials are easily available and the cost is low; therefore, the ozone-resistant rubber part has potential economic benefit and social meaning.

The invention relates to a method for preparing an interior trim material for an automobile seat cover, and belongs to the technical field of automobile interior trim. According to the method, base cloth is prepared from ethylene propylene rubber-modified neoprene and nylon through an electrostatic spinning method, and casein protein is used for performing graft modification on polyurethane to prepare a modified coating, the base cloth is impregnated in a methylbenzene solution after being impregnated in the modified coating and pressed, so that through impregnation and compression roller treatment, the interior trim material for the automobile seat cover is prepared; the nylon and the ethylene propylene rubber-modified neoprene are impregnated in the methylbenzene solution, through the impregnation and compression roller treatment, 'sea' components in sea-island fibers are extracted out to obtain bundled ultra-fine fibers formed by 'island'; sea-island ultra-fiber leather entirely composed of the ultra-fine fiber bundle and a networked PU resin sponge body is formed; the interior trim material for the automobile seat cover is free of toxicity and environmentally friendly, and cannot generate unpleasant odors.

The invention relates to the technical field of PE pipe fittings, and discloses a PE pipe fitting. The PE pipe fitting comprises an outer layer and an inner layer, wherein the thickness ratio of the inner layer to the outer layer is 1: (4 to 5); the outer layer comprises the following components in parts by mass: 80-100 parts of high-density polyethylene resin, 5-8 parts of polyvinyl acetal, 10-15parts of ethylene propylene rubber, 3-5 parts of cross-linking agent, 2-8 parts of antistatic agent, and 4-8 parts of antioxidant agent; and the inner layer comprises the following components in parts by mass: 15-25 parts of high-density polyethylene resin, 2-5 parts of phthalic acid ester, 2-4 parts of fatty acid zinc salt, 0.5-1 part of leveling agent and 0.5-1 part of defoaming agent. According to the PE pipe fitting, the service life of the pipe fitting can be prolonged.

The invention relates to an electric tracing band capable of effectively preventing electric leakage, which comprises a self-adjusting heat conduction core, a galvanized copper stranded wire is arranged in the self-adjusting heat conduction core, the outer surface of the self-adjusting heat conduction core is sleeved with a fluorine-containing polymer sleeve, and the outer surface of the fluorine-containing polymer sleeve is sleeved with a metal wire braided layer. The outer surface of the metal wire braided layer is sleeved with a fluorine-containing polymer outer sleeve, the surface of the fluorine-containing polymer outer sleeve is sleeved with a sheath, and the sheath is composed of ethylene propylene rubber, nitrile rubber, zinc stearate, an antioxidant, a filler and a flame retardant. The comprehensive performance of the electric tracing band can be improved, so that the electric tracing band has good chemical resistance, electric insulation performance, impact elasticity, low-temperature performance, hot water resistance, water vapor resistance and the like.

The invention belongs to the technical field of rubber, discloses electric insulating rubber and a fabrication method thereof, and aims at providing electric insulating rubber which is good in insulativity and simple in fabrication method. The electric insulating rubber adopts the technical scheme that the electric insulating rubber comprises the following components in parts by weight: 100 parts of EPDM (Ethylene-Propylene-Diene Monomer), 20-30 parts of calcined kaolin, 0.1-0.3 parts of thiofide PZ, 1-2 parts of stearic acid, 30-40 parts of paraffin oil, 5-8 parts of indirect-method zinc oxide, 0.3-0.5 parts of rubber accelerator CZ, 5 parts of liquid EPDM, 15-25 parts of fumed silica, 0.5-1.5 parts of silane coupling agent, 1-2 parts of sulfur and 1-2 parts of rubber accelerator DM. The fabrication method of the electric insulating rubber comprises the following steps of 1) weighing the components, 2) conducting internal mixing by sections, 3) adding sulfur to an open mill for mixing, and outputting sheet rubber, and 4) placing for 4-8h to allow rubber materials to be more uniform.

A method for producing modified polymer rubber, comprising the steps of: (1) making a conjugated diene monomer or its combination with an aromatic vinyl monomer, in a hydrocarbon solvent, in an alkali metal catalyst or specified In the presence of an alkali metal compound, carry out polymerization to form an active polymer with an alkali metal end group; and (2) couple the resulting active polymer with an alkali metal end group to a prescribed isocyanurate compound or to a prescribed The combination of reagents is carried out in a hydrocarbon solvent.

The invention discloses a high-temperature resistant and aging resistant rubber sealing strip material for a vehicle and a preparation method thereof. The high-temperature resistant and aging resistant rubber sealing strip material for the vehicle is prepared from the following raw materials: natural rubber, ethylene-propylene-diene monomer rubber, ethylene-butene elastomer, anti-aging agent BLE, jojoba oil, chloropropyltriethoxysilane, dibutyl phthalate, di-n-butyl dimethly thiodiglycolate, triethanolamine, stearic acid, accelerant DPTT, zinc oxide, nano antimony tin oxide, epoxidized soybean oil, cordierite powder, sulphur, calcined loess and the like. The used ethylene-propylene-diene monomer rubber has an excellent sealing function, better agint resistant performance and good weather resistant performance; the added ethylene-butene elastomer is beneficial to improving the impact elasticity of the overall rubber material; the added anti-aging agent BLE and the nano antimony tin oxide are beneficial to enhancing the aging resistant performance of the rubber; with the reasonable coordination of the other additives, the heat resistant performance, the abrasion resistance and the elasticity of the rubber are improved, and favorable compression deformation resistant performance and sealing performance of the rubber material are played, so that the material is safer.