采用高压静电纺丝法制备了含多壁碳纳米管(MWCNTs)的聚醚酰亚胺(PEI)纳米纤维取向薄膜,用SEM和TEM观察其微观形貌.将PEI纳米纤维薄膜铺放于环氧树脂中,通过实验测试其冲击和拉伸性能.结果表明,含MWCNTs的PEI纳米纤维膜对环氧树脂具有良好的增韧效果.Ⅰ型层间断裂韧性(GIC)测试表明,用含质量分数3％活性碳纳米管(a-MWCNTs)的PEI纤维膜对T700碳纤维/环氧树脂复合材料进行层间增韧能够明显改善其层间断裂韧性.
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