预氧化聚碳硅烷(PCS)纤维的无机化过程  

The Inorganic Process of the Cured PCS Fiber

作　　者：王浩[1] 李效东[1] 彭平[1] 陈革[1] 冯春祥[1] 

机构地区：[1]国防科技大学陶瓷纤维及其复合材料重点实验室,湖南长沙410073

出　　处：《国防科技大学学报》2002年第1期34-38,共5页Journal of National University of Defense Technology

基　　金：国家自然科学基金资助项目 (5 9972 0 42 )

摘　　要：针对预氧化PCS纤维无机化过程进行了研究 ,探讨了烧成过程中预氧化PCS纤维的投放量及保护气体流量等因素对纤维烧成过程的影响。实验发现烧成过程中产生的小分子气体活性基团阻止链自由基的结合 。The study is aimed at the inorganic process of the cured PCS fiber, the preparation of SiC fiber Much work is done on elemental fields of the affections of the amount of the cured PCS fiber and the protective gas flow etc on the pyrolysis We find through the experience that it is the offgas evacuated in the process that plays an important role by accelerating pyrolysis and increasing the weight loss The explanation is that the living radicals in the offgas prevent the split chain radicals from recombination and the chains turned to be shorter and more degradable

关 键 词：SIC纤维 无机化过程 裂解 小分子 促进作用 

分 类 号：TQ343.6[化学工程—化纤工业]