航空材料学报2011，Vol.31Issue(2)：37-42,6.DOI:10.3969/j.issn.1005-5053.2011.2.008
乙炔封端聚异酰亚胺树脂固化特性研究
Investigation of Curing Characterization of Acetylene-Terminated Polyisoimide Oligomer
李斌太 1邢丽英 1赵彤 2刘锋 2陈祥宝1
作者信息
- 1. 北京航空材料研究院,北京100095
- 2. 中国科学院化学所,北京100078
- 折叠
摘要
Abstract
The curing of acetylene-terminated polyisoimide oligomer was investigated using DSC and FTIR spectroscopy. Through dynamic and isothermal FTIR method, the isoimide-imide isomerization and crosslinking reactions of the oligomer was monitored individually and the temperature ranges of these two reactions were clearly determined. The fact that the isomerization occurred at a lower temperature ranges than the crosslinking is attributed to the difference between the activation energies of the two reactions, 79.635kJ/mol for isomerization and 106.469kJ/mol for crosslinking. For the acetylene-terminated polyisoimide oligomer considered here, curing reaction was achieved to a sufficient extent at the temperature range of 200 ～ 220℃. Posture temperature is in the range of 300 ～ 350℃.关键词
乙炔封端聚异酰亚胺树脂/异构转变/交联固化/活化能Key words
acetylene-terminated polyisoimide oligomer/ isomerization/ crosslinking/ activation energies分类
化学工程引用本文复制引用
李斌太,邢丽英,赵彤,刘锋,陈祥宝..乙炔封端聚异酰亚胺树脂固化特性研究[J].航空材料学报,2011,31(2):37-42,6.
