The invention discloses a military high-temperature-resistant sealing rubber pad, which is prepared from the following ingredients in parts by weight: 10 to 20 parts of organic silicon resin, 10 to 20parts of fluororubber, 5 to 10 parts of polytetrafluoroethylene, 5 to 10 parts of aluminum powder, 5 to 15 parts of glass fiber, 5 to 10 parts of superfine silicon ash, 5 to 9 parts of bonding agentsand 10 to 25 parts of auxiliary materials, wherein the bonding agents are prepared from 3 to 5 parts of epoxy resin, 1.5 to 3 parts of sodium silicate and 0.5 to 1 part of kaolin; the auxiliary materials are prepared from 3 parts of anti-aging agents, 5 parts of accelerators, 6 parts of RFL(resorcinol-formaldehyde-latex), 1 part of vulcanization activators, 3 parts of sulphur and 2 parts of organic silane coupling agents. The sealing rubber pad by using the scheme has the advantages that the high-temperature-resistant performance is excellent; the dimension stability and the wear-resistant performance in high-temperature environment are good.

Military high-temperature-resistant sealing rubber pad

The invention provides a preparation method of an inner-fluorine outer-silicon car rubber tube and belongs to the technical field of automobile accessory fabrication. Various types of materials required by various silicone rubber formulas are weighed in proportion of the formulas, silicone rubber and various accessories except a vulcanizing agent are fed into equipment for mixed smelting, the silicone rubber obtained after mixed smelting stands still for 24 hours, then the vulcanizing agent is added for mixed smelting again, and a piece of the rubber tube is obtained through rolling after mixed smelting is performed again; various types of raw materials required by various fluorine rubber formulas are weighed in proportion of the formulas and subjected to uniform mixed smelting on a rubber mixing mill for standby us; two types of mixed smelting glue stand still for 24 hours and then are fed into the rubber mixing mill for mixed smelting, and after the mixture is uniform, the piece of rubber tube is rolled; a die of a relative product is taken and used; and a formed product is placed into a vulcanization tank for one-segment vulcanization, demoulding is performed to detach an outer-layer film for second-segment vulcanization after the above step is completed, after whole forming is completed, a cutting head is cleaned, and the rubber tube can be packaged and put in storage after being inspected to be qualified.

Preparation method of inner-fluorine outer-silicon car rubber tube

The invention discloses an insulating material to which fluorosilicon resin is added and a preparation method thereof.The insulating material is prepared from, by weight, 55-65 parts of butyl rubber, 50-60 parts of ethylene propylene diene monomer, 50-60 parts of fluorosilicone resin, 35-45 parts of polyvinyl acetate ethylene ester, 30-40 parts of tricyclic decane dimethyl carbinol diacrylate, 25-35 parts of polytetrafluoroethylene, 20-30 parts of polycarbonate resin, 20-30 parts of ethylene bis stearamide, 15-25 parts of 2-thiol benzimidazole, 15-25 parts of polyethylene glycol, 10-15 parts of zinc borate, 5-15 parts of coupling agent and 5-15 parts of antioxygen.Thus, the prepared insulating material has good acid-base resistance and anti-flaming effects.The invention further discloses the corresponding preparation method.

Insulating material to which fluorosilicon resin is added and preparation method thereof

The invention relates to a turbo-charging rubber hose prepared from fluorine-containing silica gel. Serving as an inner layer material for the turbo-charging rubber hose, the fluorine-containing silica gel comprises the following components in parts by weight: 20-30 parts of methyl vinyl silicone rubber, 35-45 parts of fluorine rubber premix rubber, 5-7 pars of fluorosilicone, 2-3 parts of hydroxyl silicone oil, 1.5-2 parts of peroxide vulcanizing agent 101-45S, 0.5-1 part of crosslinking agent TAIC (triallyl isocyanurate), 2-4 parts of precipitated silica, 10-15 parts of carbon black N990 and 5-10 parts of magnesium oxide. By using the excellent heat-resistant property and oil-resistant property of the fluorine-containing silica gel and the good adhesive property of the fluorine-containing silica gel with the silicone rubber, the turbo-charging rubber hose can meet the high heat-resistant property requirements, and meanwhile the problem that the turbo-charging rubber hose cannot meet the operating requirements after hot oil gas is mixed to cause the oil aging of the turbo-charging rubber hose, can be avoided.

Wang Juan

Papers

Turbo-charging rubber hose prepared from fluorine-containing silica gel