结构吸波材料SiC-C纤维的研究

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,经纺丝、氧化、高温烧成,制得了SiC-C纤维,其电阻率随碳含量的增加而减小,强度和模量随碳含量的增高而降低,用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。

In this paper,the PCS-P miscellanies have been obtained through blending polycarbosilane (PCS) with coal pitch (P).The SiC-C fibers have been obtained by spinning,preoxidation, heat treatment of these PCS-C miscellanies.The resistivity,strength and modulus of these fibers decrease as the content of carbon increases.The composites composed of the SiC-C fibers and epoxy resin have good properties of microwave absorption.