为了研制碳化硅吸波纤维,首次采用聚二甲基硅烷(PDMS)和二茂铁合成聚铁碳硅烷(PFCS),PFCS经多孔熔融纺丝、空气不熔化和在N2中1320℃连续烧成,可制得连续含铁碳化硅(SiC(Fe))吸波纤维;用SiC(Fe)纤维与环氧树脂制备的结构材料具有良好的吸波性能.XPS剖面分析、Raman光谱表明:纤维表面有一层厚约100 nm的富碳层,由表及里铁的含量逐渐增加;随着温度的升高游离碳的排列逐渐规整化.研究了碳对纤维性能的影响,结果表明:游离碳的存在有利于纤维电阻率的降低,复介电常数和介电损耗的增大.
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