Thermal Degradation of PBO Fiber Investigated by TGADTA/FTIR and Py-GC/MS
PBO fiber is so far the most high-temperature resistant polymer fiber. In this paper, the thermal degradation of PBO fiber under inert gas and air were studied using pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) and thermogravimetric analysis coupled with Fourier transform infrared spectroscopy (TGA-DTA/FTIR). From room temperature to 1000℃, the residue rate of PBO fiber was 76.5％ in nitrogen. The results of Py-GC/MS showed that the repeating unit of molecular chain was the most pyrolysis fragment, and CO<,2> and benzene also kept great yields in all pyrolysates. After 650℃, the volatiles, including HCN, NH<,3>, NO<,2>, NO, CO, CO <,2>, H<,2>O and aromatic compositions can be found by TGA-DTA/FTIR in nitrogen. But in air, PBO almost lost mass all when the temperature reached 1000℃. Only several little molecular volatiles, such as CO <,2>, NO<,2>, HCN, H<,2>O, etc were searched during degradation by the means of TGA-DTA/FTIR, especially after 650℃, thermal degradation happened intensively and CO<,2> was produced importantly.
PBO TGA-DTA/FTIR Py-GC/MS Volatiles
WANG Xinwei HU Zuming TANG Qi LIU Zhaofeng
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, P. R. China
国际会议
上海
英文
254-256
2007-10-15（万方平台首次上网日期，不代表论文的发表时间）