Cold-resisting epichlorohydrin rubber composition

Abstract

The invention relates to a cold-resisting epichlorohydrin rubber composition. The cold-resisting epichlorohydrin rubber composition comprises the following ingredients in parts by weight: 40 to 60 parts of epichlorohydrin rubber, 10 to 30 parts of butadiene rubber, 1 to 5 parts of promoter NA-22; 3 to 5 parts of promoter DM, 5 to 9 parts of magnesium oxide, 1 to 2 parts of anti-aging agent NBC, 0.5 to 1 part of anti-aging agent MB, 10 to 15 parts of calcium carbonate, 5 to 10 parts of dimethoxyethyl phthalate, 5 to 10 parts of adipic acid di-butoxide ethyl ester, 30 to 50 parts of rapid-compressed carbon black N550, 20 to 40 parts of rapid-compressed furnace blank and 1.5 to 2 parts of gamma-glycidol trimethoxypropyl-silane. The epichlorohydrin rubber and the butadiene rubber are collectively utilized, the low-temperature cold resistance of the epichlorohydrin rubbe is further improved under the effect of the additives such as dimethoxyethyl phthalate and adipic acid di-butoxide ethyl ester, the brittleness temperature reaches minus 30 DEG C, no fracture is produced, and the oil resistance is still good. The cold-resisting epichlorohydrin rubber composition can have a better effect in the fields such as automobiles, petrochemical industry and the like.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a cold-resistant chlorohydrin rubber composition. Background technique [0002] With the expansion of the scope of application and the improvement of application severity, people put forward higher and higher requirements for the performance of rubber materials. As a special rubber, epichlorohydrin rubber has a wide range of uses due to its good comprehensive performance. It can be used as accessories for automobiles, airplanes and various machinery, such as gaskets, sealing rings, O-rings, diaphragms, etc.; such sealing products are key components of the entire braking machinery, and their performance directly affects driving safety. During the use of these rubber products, due to the needs of the working environment, it is required that the rubber products not only have good oil resistance, but also have excellent low temperature performance. The brittleness temperature is the ...

AI Technical Summary

Problems solved by technology

Therefore, the low-temperature performance of homopolymers composed of equal amounts of the two is not ideal

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