Corona discharge is one of the important reasons for destroying electronic components. Kapton CR series films produced by DuPont company are the first corona resistant PI films to be put into the market. At present, DuPont company has disclosed a kind of corona resistant PI film Patent for film preparation: firstly, nano-sized gas-phase alumina is mixed with solvent evenly, and then blended with prepared polyamide acid solution to obtain corona resistant PI film through high-temperature imidization. The coil wound with this film has excellent corona resistance, and its corona resistance life is more than 10 times that of traditional PI film. In recent years, our company has also made corona resistant polyimide film with unique methods, which has improved the service life of PI film by another level.http://www.china-polyimide.com
