Who knows which material can withstand pressure 4000v, high temperature 400 degrees above

Polyimide film is a new type of high-temperature organic polymer film, is made of benzene tetracarboxylic acid dianhydride (PMDA) and diaminodiphenyl ether (ODA) in the extremely strong solvent dimethyl acetamide (DMAC) in the polymerization and salivation of the film, and then imidized into. It is currently the world's best performance film insulating materials, with excellent mechanical properties, electrical properties, chemical stability and high radiation resistance, high and low temperature resistance (-269 ℃ to + 400 ℃). 1959 DuPont first synthesized an aromatic polyimide, in 1962, made of polyimide film (PI film), 1965 began production, the commodity brand KAPTON. China in the late 60s can be small batch production of polyimide film, is now widely used in aviation, navigation, spacecraft, rockets and missiles, atomic energy, electrical and electronic industry and other fields.