摘要
用聚二甲基硅烷和二茂铁合成聚铁碳硅烷,经多孔熔融纺丝、预氧化、连续烧成,制得电阻率低至10-2Ω· cm,拉伸强度可达2．0GPa,长度大于500m的连续Si—Fe—C-O纤维,这种纤维在8～18GHz范围内具有较好的吸收雷达波性能。研究铁对Si-Fe—C-O纤维电阻率和β-SiC结晶的影响:铁含量的增加有利于β-SiC晶粒的增长和电阻率的降低。
A polyferrocarbosilane(PFCS) was synthesized from polydimethylsilane and ferrocene. Low specific resistance Si-Fe-C-O fiber was prepared with the following process: The PFCS was porose melt-spun, the resulted green fibers bundle were cured by heating in air, and the cured fibers were continuously sintered under an inert atmosphere. The specific resistance of the fiber could be reduced to 10-2Ω · cm, the tensile strength was about 2.0GPa,and the length was more than 500 meters. The structural material compos...
出处
《航空材料学报》
EI
CAS
CSCD
2006年第2期33-36,共4页
Journal of Aeronautical Materials
关键词
连续Si-Fe-C-O纤维
吸波材料
电阻率
电磁参数
Β-SIC
continuous Si-Fe-C-O fibers
radar-wave absorbing material
specific resistance
electromagnetic parameter
β-SiC
