Rocker cover gasket rubber compound and preparation method thereof

Abstract

The invention discloses a rocker cover gasket rubber compound which is prepared from the following raw materials based on weight: 40-50 parts of acrylate rubber, 30-40 parts of chlorosulfonated polyethylene elastomer, 14-16 parts of fluorine rubber, 1-2 parts of ferrocene, 1-2 parts of accelerator ammonium persulfate, 5-6 parts of ABS (acrylonitrile butadiene styrene) high powder, 10-20 parts of carbon black N339, 10-20 parts of precipitated silica, 5-7 parts of alumina, 2-4 of molybdenum disulfide, 2-4 parts of barium sulfate, 5-7 parts of bentonite, 10-13 parts of modified iron tailings powder, 9-11 parts of modified wood ash, 4-6 parts of zinc oxide, 1-2 parts of ECHO. A thiadiazole derivative, 7-9 parts of bisphenol A, 1-2 parts of isocyanate, 1-2 parts of 2-mercaptobenzimidazole, 1-2 parts of antioxidant TPPD, 1-2 parts of antioxidant MB, 1-3 parts of titanate coupling agent TMC-TTS, 0.5-1 part of butyl stearate and 19-21 parts of dibutyl phthalate (DBP). The rubber compound disclosed by the invention has excellent ozone resistance and low-temperature resistance, and heat resistance, wide use temperature range and environment-friendly technology, and can be used for manufacturing a variety of sealing gaskets.

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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