采用机械搅拌和离心分散的方法制备了多壁碳纳米管-有机蒙脱土/环氧树脂复合材料.X射线衍射分析表明,当有机蒙脱土含量为2wt%时,蒙脱土在树脂体系中能够形成离散性结构.断裂韧性测试结果表明,多壁碳纳米管和有机蒙脱土的混杂对环氧树脂具有协同增韧的作用.当有机蒙脱土含量为2wt%,多壁碳纳米管含量为0.1wt%时,所得复合材料的断裂韧性是纯环氧树脂的1.77倍,是2wt%有机蒙脱土/环氧树脂复合材料的1.45倍,是0.1Wt%多壁碳纳米管/环氧树脂复合材料的1.39倍.扫描电镜分析表明,多壁碳纳米管在环氧树脂体系中分散均匀,并与有机蒙脱土片层形成了一定程度的相互穿插和咬合,多壁碳纳米管与有机蒙脱土协同增韧的主要原因是微裂纹增韧、剪切屈服与纤维拔出.
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