预氧化时间和温度对聚丙烯腈纤维预氧化的影响  

The influence of oxidative time and temperature on the stabilization of polyacrylonitrile fiber

作　　者：侯永平[1,2] 孙同庆[1,2] 王浩静[1] 吴东[1] 

机构地区：[1]中国科学院山西煤炭化学研究所,中国科学院炭材料重点实验室,太原030001 [2]中国科学院研究生院,北京100049

出　　处：《化工新型材料》2009年第12期61-63,共3页New Chemical Materials

基　　金：中国科学院知识创新工程重要方向项目(KGCX3-SYW-202)

摘　　要：通过在线监测聚丙烯腈(PAN)纤维在预氧化过程中热收缩行为,结合纤维预氧化前后性能变化,考察了时间和温度对预氧化的影响。实验结果表明:温度和时间作用不同,即温度作用不能用时间代替。温度在预氧化过程中起决定性作用,要得到较高的环化度,预氧化温度必须超过240℃。The shrinkage was used for the in situ measurement of progressing chemical stabilization reaction. The influence of oxidative time and temperature was studied. The results indicated that the effect of temperature and time was different. In other words, the effect of temperature could not be replaced by time. The role of temperature was very cruci al. For higher degree of cyclization, the stabilization temperature should not be below 240℃.

关 键 词：预氧化时间 温度 

分 类 号：TQ342.31[化学工程—化纤工业] TU375.4[建筑科学—结构工程]