中华医学超声杂志

应用化学 ›› 1994, Vol. 0 ›› Issue (3): 107-111.

• 研究论文 • 上一篇    下一篇

裂解色谱法研究PMR型聚酰亚胺前体的反应过程

丁孟贤, 徐正炎, 张劲, 孟慧岚   

  1. 中国科学院长春应用化学研究所 长春 130022
  • 收稿日期:1993-08-30 修回日期:1993-11-19 出版日期:1994-06-10 发布日期:1994-06-10

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

Ding Mengxian, Xu Zhengyan, Zhang Jin, Meng Huilang   

  1. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022
  • Received:1993-08-30 Revised:1993-11-19 Published:1994-06-10 Online:1994-06-10

PDF

383

被引次数

1

摘要： 用裂解气相色谱法研究PMR型聚酰亚胺前体在反应中的化学变化过程,以裂解产物醇和环戊二烯的生成率表示酰胺化或酰亚胺化及交联的程度,结果表明,酰胺化或酰亚胺化在50℃以下不发生,在180～220℃完成,降冰片烯端基在150℃以下不发生交联反应,在280℃,10～18小时可完成交联反应。

关键词: 聚酰亚胺, 前体, 脱醇, 交联, 裂解色谱

Abstract: 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.

Key words: polyimide, precursor, dealcoholization, crosslinking, pyrolysis gas chromatography

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