以短切高模炭纤维为增强体.制备C/C复合材料,并采用XRD、SEM等方法研究了纤维体积含量和石墨化度对复合材料性能的影响.结果表明:当短切高模炭纤维体积含量小于7%时,随着炭纤维体积含量增加,C/C复合材料的力学性能逐渐升高,高于7%时力学性能降低;随着石墨化度提高,C/C复合材料的力学性能显著降低,短切高模炭纤维增强作用下降;C/C复合材料的石墨化度对电阻率影响大,纤维体积含量对电阻率几乎没有影响;C/C复合材料的石墨化度对材料的抗氧化性影响显著.
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