SYNTHESIS OF NOVEL SOLUBLE AROMATIC POLYPYROMELLITIMIDE CONTAINING ORDERED 1,2,4-TRIAZINE IN THE MAIN CHAIN

被引：0
|
作者：
Xiao-bing Yi
Guo-shi Wu
Feng-cai Lu Department of Chemistry Tsinghua University
机构：
来源：
Chinese Journal of Polymer Science | 2002年 / 03期
基金：
中国国家自然科学基金;
关键词：
Polyimides; N; N’-Bis(4-benzil)pyromellitimide; Rigid-rod group, 1,2, 4-Triazine;
D O I：
暂无
中图分类号：
TQ317 [高分子化合物产品];
学科分类号：
摘要：
A new heat-resistant, soluble polymer, poly（phenyl-1,2,4-triazine imide）, has been prepared via a two-step methodof polycondensation of N,N’-bis（4-benzil）pyromellitimide and terephthalamidrazone in cresol, followed by curing at highertemperature. The rigid 1,2,4-triazine group increases the solubility of the polyimide so that the polymer is soluble in cresol,N-methyl-2-pyrrolidone （NMP）, trifluoroacetic acid and concentrated sulfuric acid, etc. Thermogravimetric analysis （TGA）indicates that this novel polyimide has good thermal stability with a high decomposition temperature of 447℃ in air and of423℃ in N;. It has a tensile strength of 107.4 MPa with an elongation at break of around 7.6%.
引用
收藏
页码：219 / 224
页数：6
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