A brief history of the development of fluororubber

Since the discovery of polychlorotrifluoroethylene and polytetrafluoroethylene, people have realized that fluoropolymers have excellent high temperature resistance and chemical inertness, and polytetrafluoroethylene has developed into the largest fluoropolymer industry. However, due to the performance characteristics of plastic itself, it still has major defects as a sealing material, and there is an urgent need for a fluoroelastomer sealing material.

The earliest fluorine rubber was poly-2-fluoro-1,3-butadiene and its copolymer with styrene, propylene, etc., which was trial-produced by DuPont in the United States in 1948. Its performance is no better than that of chloroprene rubber and butadiene rubber. , and it is expensive and has no actual industrial value. In the late 1950s, the American company Thiokol developed a binary nitrous fluororubber with good low-temperature properties and resistance to strong oxidants. Since then, fluororubber has entered practical industrial applications.

China has also developed a variety of fluororubbers since 1958, mainly polyolefin fluororubbers, such as type 23, 26, 246 and nitroso fluororubber. Later, a newer variety of tetrapropylene fluororubber was developed. , perfluoroether rubber, fluorophosphorus rubber.