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

作     者：Xiao-bing Yi Guo-shi Wu Feng-cai Lu Department of Chemistry Tsinghua University, Beijing 100084 China Institute of Chemistry Chinese Academy of Sciences, Beijing 100080, China 

作者机构：Tsing Hua Univ Dept Chem Beijing 100084 Peoples R China 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2002年第20卷第3期

页      面：219-224页

核心收录：

学科分类：0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 

基　　金：This project was supported by the National Natural Science Foundation of China (Grant No. 29773024) 

主　　题：polyimides N,N '-bis(4-benzil)pyromellitimide rigid-rod group 1,2,4-triazine 

摘      要：A new heat-resistant, soluble polymer, poly(phenyl-1,2,4-triazine imide), has been prepared via a two-step method of polycondensation of N,N -bis(4-benzil)pyromellitimide and terephthalamidrazone in cresol, followed by curing at higher temperature. 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 447degreesC in air and of 423 degreesC in N-2, It has a tensile strength of 107.4 MI a with an elongation at break of around 7.6%.