|
Polyimide (sometimes abbreviated PI) is a polymer of imide monomers. Polyimides have been in mass production since 1955. With their high heat-resistance, polyimides enjoy diverse applications in applications demanding rugged organic materials, e.g. high temperature fuel cells, displays, and various military roles. A classic polyimide is Kapton, which is produced by condensation of pyromellitic dianhydride and 4,4'-oxydianiline.〔Walter W. Wright and Michael Hallden-Abberton "Polyimides" in Ullmann's Encyclopedia of Industrial Chemistry, 2002, Wiley-VCH, Weinheim. 〕 ==Classification== According to the composition of their main chain, polyimides can be: * Aliphatic (linear polyimides), * Semi-aromatic, * Aromatic: these are the most used polyimides because of their thermostability. According to the type of interactions between the main chains, polyimides can be: * Thermoplastic: very often called ''pseudothermoplastic''. * Thermosetting: commercially available as uncured resins, polyimide solutions, stock shapes, thin sheets, laminates and machined parts. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Polyimide」の詳細全文を読む スポンサード リンク
|