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摘要
Using one-step high-temperature polycondensation, soluble polyimide based on 9,9-bis-(4'-aminophenyl) fluorene and 3,3', 4,4'-diphenyl oxide tetracarboxylic acid dianhydride is synthesized. Polyimide varnishes in N-methyl-2-pyrrolidone are prepared, and technological conditions of their deposition during fiber drawing are studied. A polymer coating thickness over 6 mu m is achieved for a single application. It is demonstrated that the developed coating almost does not degrade for a long time at temperatures to 250 degrees C and completely protects the optical fiber surface from water penetration.
- 出版日期2017-6
- 单位北京化工大学
