Thermal Pyrolysis Studies of Polyimide Derived from OPDA and BAPP
A new polyimide was synthesized from 3, 3, 4, 4 - oxydiphthalic dianhydride (OPDA) and 2, 2-bis (4- aminophenoxypheflyl) propane (BAPP) by two-step method in N, N-dimethylacetamide. The degradation kinetics of the high performance polymere was studied by dynamic TGA method. The thermal stability of the polyimide was elucidated using Coats-Redfern method and the degradation activation energy (Ea) of the polyimide was 167kJ/mol. The estimation on its thermal lifetime by dynamic TGA showed that the polymer possessed a good thermal stability and it could be applied for one month at 350℃ in nitrogen environment.
polyimide thermal stability pyrolysis kinetics
ZHANG Qinghua KONG Cuili CHEN Dajun
State Key Laboratory of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Shanghai 201620, P. R. China
国际会议
上海
英文
224-226
2007-10-15（万方平台首次上网日期，不代表论文的发表时间）