以碳毡为基底原位生长了碳纳米管(CNTs),借助化学气相渗透制备了CNTs-C/C复合材料.研究了催化剂含量对碳纳米管生长的影响以及不同含量碳纳米管对C/C复合材料弯曲性能的影响.结果表明:催化剂对CNTs产量影响较大,且含量越多,生成的CNTs量越大;原位生长CNTs引入的催化剂会导致CNTs-C/C复合材料弯曲性能变差;CNTs的加入改变了热解碳的沉积行为,诱导了球状和锥状小尺寸热解碳的形成,减少了微裂纹的出现.适量CNTs能提高C/C复合材料的弯曲强度和模量,并改善材料的断裂行为.
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