CO rubber

Abstract

The invention relates to a CO rubber including following components, 40-45 parts of an alkane-typed ring-opening co-polymer, 1-2 parts of polypropylene fiber, 3-5 parts of lead stearate, 2-6 parts of a silicate, 7-9 parts of cellulose ether, 5-8 parts of modified starch ether, 3-5 parts of ammonia-soluble alkylaminoketone, 10-12 parts of FEF, 8-10 parts of hydroxypropylethyl cellulose, 11-15 parts of minium, 11-15 parts of an accelerant NBC, 13-18 parts of an accelerant NA-22, 6-7 parts of para-chloroxylenol and 4-5 parts of fatty alcohol polyoxypropylene ether. The alkane-typed ring-opening co-polymer is prepared from epoxy chloropropane, epoxy chloropropane and ethylene oxide in a ring-opening co-polymerization manner. According to the formula of the CO rubber, a short-period thermal-resistant temperature of the rubber can be increased to 170 DEG C and a long-period of the thermal-resistant temperature of the rubber can be increased to 150 DEG C. The CO rubber is enhanced in oil resistance and is reduced in breathability.

Description

technical field [0001] The invention belongs to the field of chemical materials and relates to CO rubber. Background technique [0002] Chlorohydrin rubber was industrialized in 1965 by Hercules Corporation of the United States and Goodrich Chemical Company, followed by Zeon Corporation in Japan. However, there are not many countries producing chlorohydrin rubber, and the output is also low. In the 1970s, China also carried out the research and development of chlorohydrin rubber and put it into production. The synthesis method of epichlorohydrin rubber is the coordination polymerization of alkyl aluminum-water-acetylacetone catalytic system, and the solution polymerization process with benzene, toluene, ethyl chloride, etc. as the reaction medium is generally used in production. The process of producing rubber by solution polymerization is similar. Since there is no double bond in the main chain, it cannot be vulcanized with sulfur alone. Commonly used vulcanizing agents i...

AI Technical Summary

Problems solved by technology

The disadvantage of chlorohydrin rubber is poor processing performance. The homopolymer type needs to add lubricants and anti-adhesive agents to prevent roll sticking during mixing, while the copolymer type needs to add tackifiers to promote its wrapping.

Therefore, it is a key issue at present to propose a rubber formula with good heat resistance and oil resistance and low air permeability.