Highly Thermally Resistant and Flexible Polyimide Aerogels Containing Rigid-rod Biphenyl, Benzimidazole, and Triphenylpyridine Moieties: Synthesis and Characterization

被引：54

作者：

Shen, Dengxiong ^{[1
]}

Liu, Jingang ^{[1
]}

Yang, Haixia ^{[1
]}

Yang, Shiyong ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Chem, Lab Adv Polymer Mat, Beijing 100190, Peoples R China

来源：

CHEMISTRY LETTERS | 2013年 / 42卷 / 12期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1246/cl.130758

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Polyimide (PI) aerogels containing rigid-rod biphenyl, benzimidazole, and triphenylpyridine moieties have been developed. The flexible PI aerogels exhibited excellent thermal stability with glass-transition temperatures (T-g) higher than 350 degrees C. Initial porous structures in the PI aerogels could be maintained even after isothermal aging at 300 degrees C for 24 h in nitrogen. Furthermore, the weight losses of the aerogels after isothermal aging at 300 and 400 degrees C for 24 h in nitrogen were below 5 and 10 wt %, respectively.

引用

页码：1545 / 1547

页数：3

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