【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。更多还原

【Abstract】 Pyrolysis gas chromatography has been used to investigate the dealcoholizationand crosslinking process of PMR type polyimide precursors,The relative amounts of the re-leased alcohol and cyclopentadiene were selected to indicate the formation of amide or imideand the remained norbonene endcaps,respectively. The results showed that the dealcoholiza-tion 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 thetemperature and time;it started at above 150℃ and completed at 280℃ for 10～18 hours.更多还原