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Citation: Ding Mengxian, Xu Zhengyan, Zhang Jin, Meng Huilang. Pyrolysis Gas chromatographic Study on Reaction Process of PMR Type Polyimide Precursors[J]. Chinese Journal of Applied Chemistry, ;1994, 11(3): 107-111. shu

Pyrolysis Gas chromatographic Study on Reaction Process of PMR Type Polyimide Precursors

1.
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022

Received Date: 30 August 1993
Available Online: 19 November 1993

Pyrolysis gas chromatography has been used to investigate the dealcoholization and crosslinking process of PMR type polyimide precursors,The relative amounts of the released alcohol and cyclopentadiene were selected to indicate the formation of amide or imide and the remained norbonene endcaps,respectively.The results showed that the dealcoholization is a temperattire dependent process,and it began at above 50℃ and completed at 180~220℃,Whereas,the crosslinking of the end-capped norbonene is dependent both on the temperature and time;it started at above 150℃ and completed at 280℃ for 10~18 hours.
- polyimide,
- precursor,
- dealcoholization,
- crosslinking,
- pyrolysis gas chromatography
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