Bonding of formed article of fluorine-containing polymer

Abstract

Abstract PURPOSE:To carry out the bonding of a molded article of a fluorine-containing polymer, easily and effectively, by treating the article with an alkaline solution and a phase-transfer catalyst, and using the surface of the dehydrofluorinated layer formed to the surface of the molded article as the bonding face. CONSTITUTION:A molded article of a fluorine-containing polymer, e.g. film or various molded articles of a homopolymer or copolymer of polyvinyl fluoride, polyvinylidene fluoride, etc. is treated with a mixture of (A) an aqueous solution or methyl alcohol solution etc. of an alkaline substance such as a 5-30wt% solution of NaOH, KOH, organic amine, etc. and (B) 1X10<-4>-1%, preferably 0.01-0.1% phase-transfer catalyst such as a quaternary ammonium salt, quaternary phosphonium salt, etc., at 40-150 deg.C, preferably 80-110 deg.C for >=10sec, preferably 30sec-3hr. The dehydrofluorinated layer formed on the surface is used as the bonding face of the titled process.

Inventors

• 👤 Yasumitsu Uno
• 👤 宇野　泰光

Bibliographic Details