摘要： 采用混酸法对多壁碳纳米管（MWNT）表面进行处理，引入双键后与丙烯酸正丁酯（BA）、乙酸乙烯酯（VAc）共聚，得到表面接枝高分子聚合物的碳纳米管（MWNT-PBV）。采用透射电镜（TEM）和热重分析仪（TGA）对其进行表征。将 MWNT-PBV与环氧树脂机械共混，制得碳纳米管／环氧树脂复合材料，测试其力学性能、抗静电性，用扫描电镜（SEM）对其断面进行分析。结果表明：碳纳米管表面成功接枝了聚合物；MWNT-PBV在环氧树脂中的分散性优良；复合材料的耐冲击性提高约 400%；表面电阻明显降低；抗静电性增强。

关键词: 多壁碳纳米管, 环氧树脂, 分散性, 力学性能, 抗静电性

Abstract: The multi-walled carbon nanotubes(MWNT) surface was modified by acid mixture, than the double bonds were introduced onto the surlace. which would be copolymerized with n-butyl acrylate(BA)and vinyl acetate(VAc) to produce the surface grafted MWNT(MWNT-PBV ). The MWNT-PRY was characterized by transmission electron microscopy(TEM) and thermo-gravimetric analyzer(TGA). The MWNT -PBV was mechanically blended with epoxy resin to prepare the MWNT/EP composite materials.The mechanical and antistatic properties of products were tested. The cross-section was analyzed by scanning electron microscopy(SEM). The results indicated that the copolymer was successfully linked onto the surface of MWNT. The MWNT -PBV could be dispersed well in the epoxy resin with impact resistance of composite materials increased by 400%, the surface resistance decreased significantly, and the antistatic property improved.

Key words: MWNT, epoxy resin, dispersibility, mechanical properties, antistatic property