【作者】 冯春祥； 刘军； 宋永才；

【Author】 FENG Chun-xiang;LIU Jun;SONG Yong-cai Department of Material Engineering and Applied Chemistry National University of Defense Technology, Changsha. 410073, China

【机构】 国防科技大学502室；

【摘要】 本文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-碳纤维先驱体,并经熔融纺丝及不熔化处理,最后经过烧成制得SiC-C陶瓷纤维,电阻率小于10~0Ω·cm。相对照,通过聚碳硅烷制得的SiC 纤维为10~6Ω·cm,纤维的强度随纤维中碳含量增加而下降。结果表明能够从聚二甲基硅烷与聚氯乙烯共裂解出发制备低电阻率的SiC纤维。更多还原

【Abstract】 The precursor polymer was prepared by means of thermal rearrangement reaction of Polyvinylchloride andPolydimethylsilane. Through melt spinning, infusibilization and heat treatment at high temperature, fiber with lowresistivity has obtained and showed lower resistivity than the SiC fiber derived from Polycarbosilane. Its resistivity isbelow 10~0Ω.cm.. The tensile strength of fibers is decreased with the increase of carbon content.更多还原