373 results about "Thiuram disulfide" patented technology

A rubber composition for a tire having greatly shortened vulcanization time, good silica dispersibility and, after vulcanization, superior braking capability, abrasion resistance and low rolling resistance, comprising (A) 100 parts by weight of a conjugated diene-based rubber, (B) 90 to 150 parts by weight of a reinforcing filler containing silica, (C) 0 to 40 parts by weight of an oil, (D) 4 to 20% by weight, based upon the weight of the silica, a silane coupling agent having the formula (I):Y3Si—CnH2nA   (I)wherein Y indicates a C1 to C25 alkyl or alkoxyl group or a chloro group, the three Y's may be the same or different, n is an integer of 1 to 6, A is a mercapto group or SmZ group, where Z is the group:and m is an integer of 1 to 6)(E) sulfur, and (F) 0.05 to 5 parts by weight of a thiuram disulfide-based vulcanization accelerator having the formula (II):wherein R5, R6, R7 and R8 are independently hydrocarbon groups having 2 to 18 carbon atoms, is provided.

The invention relates to an inner hose formula for an electrochemical corrosion resistant hose, which comprises the following compositions in portion by weight: 30 to 70 portions of low-mooney ethylene propylene diene rubber, 70 to 30 portions of high-mooney ethylene propylene diene rubber, 60 to 80 portions of semi-reinforcing carbon black, 60 to 90 portions of silica fume, 1.2 to 1.8 portions of bi-thiuram tetrasulfide, 1.7 to 2.3 portions of zinc dibutyl dithiocarbamate, 0.5 to 0.8 portion of tetramethyl thiuram disulfide, 3 to 5 portions of zinc oxide, 1 to 3 portions of polyethylene glycol, 1.5 to 2.0 portions of morphine disulfide, 0.3 to 0.6 portion of sulfur, 50 to 60 portions of paraffin oil, 1 to 3 portions of stearic acid and 2 to 4 portions of 2, 2, 4-trimethyl-1, 2-biquionlyl dihydride polymers. Compared with the prior product, the inner hose formula for the electrochemical corrosion resistant hose has obvious differences; the tensile strength is 12.0 MPa; the volume resistivity is 1X10<12> omega.cm and 1X10<5> omega.cm higher than that of the prior product; the service life of the electrochemical corrosion resistant hose is greatly improved; and the inner hose formula for the electrochemical corrosion resistant hose can well meet the demands of heat resistance and electrochemical corrosion resistance of a radiator hose of a motor vehicle.

The invention relates to an ethylene propylene diene monomer (EPDM) composition for low-hardness glue injection. The composition comprises the following ingredients: EPDM rubber, activated zinc oxide, stearic acid, polyethylene glycol, 2,2,4-trimethyl-1,2-dihydroisoquinoline polymer, carbon black N330, carbon black N550, silicon dioxide hydrate, paraffin oil, coupling agent Si-69, accelerator DM, zinc diethyl dithiocarbamate, tetramethyl thiuram disulfide, bis(pentamethylene)thiuram tetrasulfide, and sulphur. According to the formula of the composition, the original hardness is low and is only about 50 degrees, the tensile strength and 100% stress at definite elongation are high, thermal air aging resistance property, the coldness resistance and low-temperature crispness are all excellent to meet the use requirement under low-temperature environment of different regions in winter, the lowest temperature can reach minus 45 degrees, glue injection technique is adopted to be capable of saving labor time and manual work. The composition formula can meet the requirements of RCF-510 grade material in MES MN300 standard.

The invention discloses a method for preparing a cooling water pipe rubber material for an automobile. A formula and a preparation process are involved. Ethylene-propylene-diene monomer is adopted; a vulcanization system of sulfur, tetramethyl thiuram disulfide, and dipentamethylenethiuram tetrasulfide is adopted in the formula so as to improve the pressing deformation resistance and heat resistance of the material; poly(1,2-dihydro-2,2,4-trimethyl-quinoline) antiager is added in the formula so as to improve the heat resistance and ageing resistance of the material; filling reinforcing agents, namely sillitin powder and active calcium carbonate are added in the formula so as to improve the electrical resistance of the material; and the corresponding technical scheme of the preparation process is matched with the formula so as to overcome the defects of low heat resistance, pressing deformation resistance, and electrical resistance in the prior art, and by preparing the rubber materialwith high heat resistance, high pressing deformation resistance and high electrical resistance, the heat resistance, the pressing deformation resistance and the electrical resistance of the manufactured cooling water pipe product for the automobile are improved, and the aims of meeting increasingly high requirements of automobile industry on rubber products, and meeting the Mazda MES PA15 185A standard can be fulfilled.

The invention discloses a thermoplastic powder coating. The thermoplastic powder coating is composed of following raw materials in parts by weight: 90-94 parts of polyethylene E309, 6-10 parts of thermoplastic polyurethane elastomer, 1-2 parts of perfluor-butyl potassium sulphonate, 0.2-0.4 part of tetramethyl thiuram disulfide, 0.4-1 part of N,N-diethyl aniline, 1-2 parts of ricinoleic acid, 1-2 parts of 1-ethoxyl-2-oleic imidazoline, 0.5-1 part of distearoyl isopropoxy aluminate, 2-4 parts of guar gum, 10-14 parts of epoxy soybean oil and 15-20 parts of modified fillers. The powder coating provided by the invention is particularly suitable for heat radiation coating of an LED (Light Emitting Diode) lamp and is convenient to use; the surface temperatures of a heat radiation cup, an aluminum substrate, a lamp cover and the like of the LED lamp so that the cooling effect is realized.

The invention discloses an ethylene-propylene-diene monomer rubber waterproof roll. The ethylene-propylene-diene monomer rubber waterproof roll is prepared from the following raw materials in parts by weight: ethylene-propylene-diene monomer rubber, DOP (Dioctyl-Phthalate) thermal welding agent, carbon black, light calcium carbonate, stearic acid, zinc oxide, rubber accelerator, sulfur, processing oil, fire-retardant plasticizer, chlorinated polyethylene (CPE), white carbon black and rubber accelerator tetramethyl thiuram disulfide (TMTD). A production method of the ethylene-propylene-diene monomer rubber waterproof roll comprises the steps of banburying, filtering, compounding, thermal cracking, calendering, rolling, vulcanization and packaging. The ethylene-propylene-diene monomer rubber waterproof roll produced by the method has good ageing resistance, small possibility of cracking and good waterproof effect and has an inflaming retarding function, the initiation temperature exceeds 300 DEG C, and the ethylene-propylene-diene monomer rubber waterproof roll has no water-permeating phenomenon through permeable experiments.

The invention discloses a wear-resistant tear-resistant ethylene propylene diene monomer rubber material which is prepared from the following raw materials in parts by weight: 30-40 parts of ethylene propylene diene monomer rubber, 10-18 parts of chloroprene rubber, 0.8-1.5 parts of LH-C96 vulcanizing agent, 0.5-1.5 parts of N,N'-m-phenyl bismaleimide, 1.5-1.8 parts of accelerator TMTD (tetramethyl thiuram disulfide), 2-4 parts of magnesium oxide, 1-3 parts of stearic acid, 5-10 parts of trioctyl trimellitate, 2.5-4 parts of environment-friendly flame retardant FR-T801, 0.8-1.6 parts of antimony trioxide, 20-40 parts of nano zinc oxide, 15-30 parts of coal gangue powder, 20-30 parts of calcined argil, 2-3 parts of anti-aging agent RD and 0.5-1.3 parts of anti-aging agent NBC. The material has the advantages of excellent wear resistance, excellent wear resistance and favorable aging resistance.

The invention relates to a dielectric rubber body for packaging a sensor. The dielectric rubber body is characterized in that the formula thereof comprises 60-70 parts of chlorinated butyl rubber, 10-20 parts of butadiene styrene rubber, 20-30 parts of natural rubber, 20-30 parts of light calcium carbonate, 30-40 parts of carbon black, 5-10 parts of conductive carbon black, 1-3 parts of stearic acid, 2-5 parts of magnesium oxide, 1-5 parts of octyl phenol-phenolic resin, 3-6 parts of zinc oxide, 1-3 parts of N-tertiary butyl-2-benzothiazole sulfenamide, 0.5-2 parts of tetramethyl thiuram disulfide, and 0.5-2 parts of insoluble sulphur. The dielectric rubber body disclosed by the invention is used for a conductive radiofrequency device in tire; the device comprises a radio assembly and an antenna, and can be used for tracking and recording data during manufacturing, sales and use; and the measurement range covers temperature, pressure or other physical parameters in tire. During the loading process of a sensor, the conductive material with a certain dielectric constant and a certain adhesive force disclosed by the invention is chosen, so that the device can be firmly connected with a tire and can be used for transmitting data more stably; simultaneously, via high elasticity and good mechanical property of rubber, the device can withstand the stress brought by cyclic deformation of the tire excellently.

The invention discloses an oil-resistant and low-temperature-resistant material for shoe soles and a method for preparing the oil-resistant and low-temperature-resistant material. The oil-resistant and low-temperature-resistant material comprises, by weight, 60-80 parts of nitrile rubber, 40-50 parts of brominated butyl rubber, 5-8 parts of fluorine-based alkyl polyether-modified polysiloxane, 8-12 parts of zinc oxide, 20-25 parts of white carbon black, 3-5 parts of N, N'-bicyclo-caproyl-2-benzothiazole sulfonamide, 3-5 parts of tetramethyl thiuram disulfide, 2-4 parts of dioctyl phthalate, 6-12 parts of wood powder, 4-6 parts of 2-mercapto benzimidazole, 1-3 parts of sulfur, 1-3 parts of stearic acid and 1-2 parts of percarbamide. The oil-resistant and low-temperature-resistant material for the shoe soles and the method have the advantages that the oil-resistant and low-temperature-resistant material for the shoe soles is excellent in oil resistance, the oil resistance (the expansion rate of the oil-resistant and low-temperature-resistant material after the oil-resistant and low-temperature-resistant material is soaked in oil) can reach 5%-6.8%, the tensile strength of the oil-resistant and low-temperature-resistant material at the temperatures of minus 50 DEG C is 18-22 Mpa, the rebound rate of the oil-resistant and low-temperature-resistant material is 48-51%, the oil-resistant and low-temperature-resistant material is excellent in abrasion resistance, and a friction coefficient of the oil-resistant and low-temperature-resistant material is 1.45-1.65.

The invention relates to an inflaming retarding ethylene-propylene-diene-monomer rubber foam material and a preparing method thereof. The inflaming retarding ethylene-propylene-diene-monomer rubber foam material is mainly prepared from, by weight, 100 parts of ethylene-propylene-diene-monomer rubber, 10 parts to 35 parts of naphthenic oil, 10 parts to 30 parts of carbon black, 5 parts to 20 parts of organo-phosphorus flame retardant, 10 parts to 25 parts of chitosan, 10 parts to 45 parts of hydrotalcite, 0.5 part to 1.5 parts of stearic acid, 1.0 part to 3.5 parts of zinc oxide, 4.0 parts to 8.5 parts of sulphur, 2.0 parts to 4.5 parts of tetramethyl thiuram disulfide (TMTD), 1.0 part to 3.5 parts of 2, 2'- disulfbenzothiazole (DM) and 1.5 parts to 4.5 parts of azodicarbonamide (AC). The inflaming retarding ethylene-propylene-diene-monomer rubber foam material has the advantages of being free of halogen, good in flame retardant performance, excellent in combination performance and the like, and is suitable for industries such as building heat preservation, auto spare parts, waterproof materials, electric wires, air conditioner cooling and war industry apparatuses.

The invention discloses an aircraft tire flap rubber which is prepared by using a banbury mixer according to a conventional technology from the following raw materials in parts by weight: 30-50 parts of 20# standard glue, 30-50 parts of butadiene-styrene rubber, 50-70 parts of reclaimed rubber, 1-6 parts of zinc oxide, 1-6 parts of stearic acid, 0-2 parts of anti-aging agent A, 0-2 parts of anti-aging agent D, 0-2 parts of paraffin, 2-6 parts of asphalt, 40-60 parts of N660 carbon black, 5-10 parts of aromatic oil, 1-3 parts of sulfur, 0-2 parts of accelerant TMTD (teramethyl-thiuram disulfide), 0-2 parts of accelerant MBTS (mercaptobenzthiazole disulfide) and 0.1-2 parts of scorch retarder CTP (cyclohexylthiophthalimide). The aircraft tire flap rubber has the advantages of improving hardness and strength of a sizing material by adopting the carbon black N660 as a reinforcing agent; prolonging scorch time without reducing the curing speed in a curing stage and improving processing and storing stabilities of the sizing material by adding the scorch retarder CTP in the formula; and improving plasticity and uniformity of the sizing material, improving technological operation properties of the sizing material and effectively solving various problems in a production process by adopting the aromatic oil as a softening agent.