6 results about "Dicumyl peroxide" patented technology

This invention relates to a method for improving the fluidity of thermoplastic vulcanized rubber. The method comprises: (1) pre-mixing rubber with plastic (30-50% of total plastic); (2) mixing the premixed rubber with the rest plastic; (3) dynamically vulcanizing; (4) adding dicumyl peroxide (1-4% of the second plastic addition), melting and mixing to obtain the thermoplastic vulcanized rubber. The fluidity of the thermoplastic vulcanized rubber is largely improved, while its physical and mechanical properties are maintained.

The invention provides a preparation method of a corrosion inhibitor of methanol gasoline, and belongs to the technical field of metal corrosion protection. The preparation method comprises steps as follows: alpha-methylstyrene dimer, maleic anhydride, dicumyl peroxide and dimethylbenzene are added into a reactor, and then, the mixture is heated in an atmosphere of nitrogen for reacting; after the mixture is cooled to the room temperature, octadecanol, polyethylene glycol, p-toluenesulfonic acid, n-butyl alcohol and ethyl acetate are added, the mixture is heated for reacting and then cooled to the room temperature, and a mixture I is obtained; the mixture I is washed with a sulfuric acid aqueous solution, then washed with an NaOH aqueous solution and finally washed with an aqueous solution, and a mixture II is obtained; and benzotriazole, 2, 6-tert-butyl-4-methyl phenol, hexamethylene tetramine, ethanol, propargyl alcohol, trimellitate, a surface active agent and a combustion improver are added into the mixture II and uniformly stirred, and the corrosion inhibitor is obtained. The provided methanol gasoline has good solubility with various oils, the additive amount is small, and the corrosion-resistant effect is superior to that of a similar product.

The invention discloses a special adhesive sticker for an ethylene propylene diene monomer heat resistance conveyor belt and a preparation method of the special adhesive sticker. The adhesive stickertaking ethylene propylene diene monomer, maleic anhydride butadiene and dicumyl peroxide as a body is developed for the first time, the ethylene propylene diene monomer adhesive sticker and a polyester canvas (unimpregnated) have excellent adhesive effects, the ethylene propylene diene monomer adhesive sticker and ethylene propylene diene monomer covering rubber also have good adhesive strength, the problem of adhesion property reduction after aging due to natural rubber and butadiene styrene rubber serving as adhesive rubber in a high-temperature-resistant conveyor belt can be thoroughly solved, and the structure of the high-temperature-resistant conveyor belt is optimized. Anti-aging agents in ethylene propylene diene monomer materials with high adhesion property are removed, degradationof the polyester canvas can be relieved, and the service life of the polyester canvas is prolonged.

The invention discloses a bismaleimide resin/silicone rubber ablation-resistant thermal insulation composite material and a preparation method thereof. The composite material is prepared from the following components in parts by mass: 20-80 parts of methylvinylsilicone rubber, 20-80 parts of methyl vinyl phenyl polysiloxane rubber, 1-5 parts of dicumyl peroxide, 15-40 parts of white carbon black, 5-15 parts of chopped fibers, 5-40 parts of bismaleimide, 1-5 parts of hydroxyl silicone oil and 1-20 parts of zirconium boride. The bismaleimide resin/silicone rubber ablation-resistant thermal insulation composite material has high vulcanization molding quality, and a dense hard carbon layer can be formed on the surface of an ablation layer of the thermal insulation composite material in the ablation process to play a role of preventing the thermal insulation composite material from further ablation, thereby improving the ablation resistance and antioxygenic property of the thermal insulation composite material, enabling the thermal insulation composite material to meet the requirements of operating environments with oxygen enrichment, high temperature, high-speed gas flow and particle erosion, and solving the problem that the thermal insulation material is easy to flaw and be burnt out under the working environments with high temperature, high pressure, oxygen enrichment and particle erosion.

The invention discloses a sealing adhesive used for automobile part changing. The sealing adhesive consists of the following raw materials in parts by weight: 35 to 45 parts of natural rubber, 18 to 26 parts of EPDM rubber, 6 to 8 parts of paraffin oil, 7 to 9 parts of atomizing carbon black, 0.8 to 1.2 parts of sulfur, 5 to 7 parts of a ceramic micro powder, 6 to 8 parts of lignin, 6 to 8 parts of nanosilicon dioxide, 1.1 to 1.4 parts of an anti-aging agent, 9 to 12 parts of a softening agent, 5 to 7 parts of polyethylene glycol, 4 to 6 parts of dimethyl silicone, 1 to 2 parts of polyurethane, 2 to 4 parts of linear polyethylene, 3 to 6 parts of triallyl isocyanurate, 1 to 4 parts of dicumyl peroxide, 1 to 3 parts of a lubrication dispersing agent, 4 to 6 parts of zinc oxide and 5 to 7 parts of sodium silicate. The sealing adhesive has the beneficial effects that firstly, the sealing adhesive is high in lubricating property, high in heat resistance and high in aging resistance, the twisting force is prevented from being increased to cause twisted fracture in the assembling process, and the service life is long; secondly, the sealing adhesive is high in processing safety, high in elasticity, stable in colloid chemistry performance, good in sealing effect, sturdy and durable, high in adhesive property and unlikely to cause sun cracks and falling.

The invention discloses a setting agent used after wool stretch and refinement. The setting agent is characterized by comprising, by weight parts, 3-12 parts of trimethylolmelamine, 0.09-0.8 part of boron fluoride, 1.2-2 parts of vinyl chloride-vinyl acetate resin, 4-8 parts of butanone, 6-12 parts of dicumyl peroxide, 4-6 parts of polystyrene foam plastics and 100-120 parts of water. According tothe setting agent, wool which is stretched and refined can be quickly oxidized, and the goal of quick forming is achieved.