PAN纤维低温热氧化过程的结构变化  

STUDY ON STRUCTURAL TRANSFORMATION OF PAN FIBER DURING LOW\|TEMPERATURE THERMO\|OXIDATIVE PROCESS

作　　者：赵根祥[1,2] 陈顺英[1,2] 

机构地区：[1]中国科学院山西煤炭化学研究所 [2]清华大学材料科学系

出　　处：《合成纤维工业》1999年第2期13-16,共4页China Synthetic Fiber Industry

基　　金：山西省自然科学基金

摘　　要：用在位Ｘ－射线衍射研究了ＰＡＮ纤维的低温热氧化过程。发现该类纤维在热解初期（１００）峰的衍射强度逐渐增加，当达到晶体转变温度约２１０℃便迅速地下降。同时，还观察到了代表梯形聚合物形成的（１０１）峰，其衍射强度随温度升高而加强。并且，对所获得的结构参数与热解温度和预定温度下恒温时间的依赖关系给予了讨论。另外，还对两种试样在动态条件下所测得的结构参数进行了比较和分析。The low\|temperature thermo\|oxidative process of PAN fiber was studied by in\|situ X\|ray diffraction. It was found that the diffraction intensity increased gradually at the peak(100) in the early pyrolytic stage and decreased rapidly after the crystal transition temperature reached about 210. Meanwhile, the peak(101) at which the ladder polymer was formed showed that the diffraction intensity became stronger as the temperature rised. Moreover, the relationship among the structural parameter, pyrolysis temperature and thermostat time at given temperature was discussed. The obtained structural parameters of two samples at the dynamic condition were compared and analyzed.

关 键 词：X-射线衍射 聚丙烯腈纤维 热氯化 稳定性 

分 类 号：TQ342.31[化学工程—化纤工业]