文献类型：期刊文献

英文题名：Thermal stability of a novel polytriazole resin

作者：Xue, Lian[1]; Wan, Liqiang[1]; Hu, Yanhong[1]; Shen, Xuening[1]; Huang, Farong[1]; Du, Lei[2]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China;[2]Shanghai Bur Astronaut, Shanghai 200233, Peoples R China

年份：2006

卷号：448

期号：2

起止页码：147

外文期刊名：THERMOCHIMICA ACTA

收录：;EI(收录号：20063710113700);WOS:【SCI-EXPANDED(收录号:WOS:000241006500009)】；

语种：英文

外文关键词：polytriazole; thermal degradation kinetics; pyrolysis; degradation mechanism; high performance resin matrix

摘要：A novel poly(1,2,3-triazole) (PTA) resin was prepared from a diazide and a multialkyne. The thermal stability and degradation kinetics of the cured PTA resin were investigated with the aid of the thennogravimetric analysis (TGA) technique. The degradation temperature of the cured PTA resin reaches 360 degrees C (T-d5). Apparent kinetic parameters of the degradation of the cured resin is obtained by using Ozawa's method. The average apparent degradation activation energies of the PTA resin are about 190 kJ/mol under nitrogen and 160 kJ/mol under air. The cured PTA resin was pyrolyzed at 400 and 570 degrees C separately and the pyrolysis fragments were determined by using the Py/GC/MS combined technique. The results show that the degradation of the cured PTA resin initiates at CH2-N bonds. Nitrogen and related compounds which result from the cleavage of C-N and N-N bonds of 1,2,3-triazole ring were found in the pyrolysis products at 570 degrees C but no at 400 degrees C. Finally, a degradation mechanism of the cured polytriazole resin was proposed. (c) 2006 Elsevier B.V. All rights reserved.