结构吸波材料SiC-C纤维的研究

A Study of SiC-C Fibers Used in Structure Microwave Absorbers

本文用聚碳硅烷(PCS)与煤沥青(P)共混,制得PCS-P 共混物,再经纺丝、氧化、高温烧成,制成了SiC-C 纤维。该纤维电阻率随碳含量的增加而减少,强度和模量随碳含量的增高而降低,而且该纤维与环氧树脂复合制得的层合板材,具有良好的吸收电磁波性能。

The PCS—P miscellanies have been obtained to blend polycarbosilane(PCS)with coal pitch(P).The SiC—C fibers have been obtained by spinning,preoxidation,heat treatment of thesePCS—C miscellanies.The resistivity,strength and modulus of these fibers decrease with the in-crease of the carbon contents.The composites composed of the SiC—C fibers and epoxy resin havegood electromagnetic wave absorption properties.