中文摘要：

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。

英文摘要：

Polyetherimide（PEI） nano-fibrous membranes with multi-walled carbon nanotubes（MWCNTs）were prepared by electrospinning.The morphology of nano-fibrous membranes was studied by SEM and TEM.The impact and tensile properties of epoxy toughed by nano-fibrous membranes were investigated.The result shows that the toughness of epoxy is improved with the loading of PEI nano-fibrous membranes with MWCNTs.The result of GIC test shows that interlaminar fracture toughness of the carbon fiber/epoxy composites toughed by PEI nano-fibrous membranes containing 3% mass fraction active MWCNTs（a-MWCNTs） can be highly enhanced.