先驱体转化法制备低电阻率Si-O-C纤维  

Si-O-C FIBER WITH LOW RESISTIVITY FROM POLYMERTIC PYROLYSIS

作　　者：刘军[1] 宋永才[1] 冯春祥[1] 薛金根[1] 

机构地区：[1]国防科技大学,502室湖南长沙410073

出　　处：《高分子材料科学与工程》2001年第6期142-145,共4页Polymer Materials Science & Engineering

基　　金：国家 8 6 3新材料领域资助项目

摘　　要：通过采用将聚二甲基硅烷 (PDMS)与聚氯乙烯 (PVC)共裂解合成碳化硅 -炭纤维先驱体 ,并经熔融纺丝及不熔化处理 ,最后经过烧成制得 Si- C- O陶瓷纤维。讨论了影响合成产物的因素。研究表明纤维的强度随纤维中碳含量增加而下降。纤维的电阻率比单纯通过聚碳硅烷纤维得到 SiThe precursor polymer was prepared by means of thermal rearrangement reaction of polyvinylchloride(PVC) and polydimethysilane(PDMS). Through melt spinning, infusibilization and heat treatment at high temperature. Fiber with low resistivity was obtained and showed lower significant resistivity than the SiC fiber derived from polycarbosilane.

关 键 词：碳化硅纤维 低电阻率 先驱体聚合物 裂解 先驱体转化法 

分 类 号：TQ343.6[化学工程—化纤工业]