Seal rubber for valve rod of automobile and preparation method of seal rubber

Abstract

The invention discloses a seal rubber for a valve rod of an automobile. The seal rubber comprises the following raw materials by weight: 64 to 66 parts of acrylic rubber, 14 to 16 parts of butyl rubber BK-1675N (Yanshan Petrochemical), 10 to 12 parts of butadiene-acrylonitrile rubber N240, 8 to 10 parts of chlorosulfonated polyethylene rubber TS-930 (Tosoh), 1 to 2 parts of poly-4-methy-1-amylene, 10 to 20 parts of carbon black N440, 8 to 10 parts of super wear-resisting carbon black N110, 6 to 10 parts of heavy calcium carbonate, 1 to 3 parts of hard vinyl alcohol, 1 to 2 parts of calcium stearate, 0.5 to 0.8 parts of stearic acid, 1 to 2 parts of zinc oxide, 5 to 10 parts of wollastonite in powder, 2 to 4 parts of quartz powder, 9 to 11 parts of modified iron tailings powder, 1 to 2 parts of hexamethyldisilazane, 1 to 2 parts of vulcanizing agent DTBP (Di Tert Butyl Peroxide), 3 to 4 parts of N, N'-metabenzyl bismaleimide, 1 to 2 parts of antioxidant 4010NA, 1 to 2 parts of antioxidant ODA,1 to 3 parts of aminopropyltriethoxysilane, and 14 to 16 parts of epoxidized butyl oleate. The rubber material is excellent in ozone resistance, low-temperature resistance and heat resistance, wide in operating temperature range and environment-friendly in process, and can be used for manufacturing various seal components.

Description

technical field [0001] The invention relates to the field of synthetic rubber, in particular to a gasket rubber material for automobile valves and a preparation method thereof. Background technique [0002] Rubber parts for automobiles play a major role in anti-vibration, noise reduction, driving stability and ride comfort of vehicles. The amount of general-purpose rubber materials used in automobiles is relatively large, but as the engine tends to develop in the direction of high power and miniaturization in recent years, the ambient temperature around the engine has increased, and the emission control regulations have become more stringent. In addition, the use of alcohol-containing fuels has forced rubber Parts improve heat resistance, cold resistance, oil resistance, aging resistance and other properties. Therefore, the consumption of high-performance special synthetic rubber is increasing, and automobiles are the main market for these special synthetic rubbers. Theref...

AI Technical Summary

Problems solved by technology

The sealing performance of the existing rubber seals is not satisfactory under the working conditions of high temperature, low temperature, large temperature difference, corrosive medium and long life. The development of high-performance compound rubber has become the development trend of the domestic rubber industry.

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