Abstract：An amphiphilic random copolymer of polyglycidyl methacrylate-co-N-vinyl carbazole P(GMA-co-NVC) was synthesized by free radical polymerization and was used to noncovalently modify multi-walled carbon nanotubes (MWCNTs). The obtained P(GMA-co-NVC)/MWCNTs was mixed with epoxy resin and used to reinforce epoxy resin. Polymer modified carbon nanotubes/epoxy resin composites were prepared by a casting molding method. Tensile test, electrical resistivity test and differential scanning calorimeter(DSC) analysis were used to study the effect of polymer modified carbon nanotubes on the mechanical, electrical, and thermal properties of epoxy resin. The results show that the epoxy composite reinforced with P(GMA-co-NVC)/MWCNTs shows a remarkable enhancement in both tensile strength and elongation at break compared to either the pure epoxy or the pristine MWCNTs/epoxy composites. In addition, the electrical conductivity of epoxy is significantly improved and the volume resistivity decreases from 1014Ω·m to 106Ω·m with 0.25% mass fraction loading of P(GMA-co-NVC)/MWCNTs. Moreover, glass transition temperature of the epoxy composite also increases from 144℃ to 149℃.
 王德中.环氧树脂生产与应用[M].北京:化学工业出版社,2001.196-197.WANG D Z.Production and Application of Epoxy Resin[M].Beijing:Chemical Industry Press,2001.196-197.
 ⅡJIMA S.Helical microtubules of graphitic carbon[J].Nature,1991,354(6348):56-58.
 陈亚光,蔡晓兰,王开军,等.高能球磨法制备的CNTs/A1-5% Mg复合材料的力学性能及断裂特性[J].材料工程,2014,(11):55-61.CHEN Y G,CAI X L,WANG K J,et al.Mechanical properties and fracture feature of CNTs/Al-5% Mg composite prepared by high-energy ball milling[J].Journal of Materials Engineering,2014,(11):55-61.
 黑艳伟,张宝艳,周正刚,等.MWNT/PEK-C导电薄膜的制备及其性能研究[J].航空材料学报,2014,34(2):46-50.HEI Y W,ZHANG B Y,ZHOU Z G,et al.Preparation and properties of MWNT/PEK-C electrical conductive film[J].Journal of Aeronautical Materials,2014,34(2):46-50.
 GOJNY F H,NASTALCZYK J,ROSLAMIEC Z,et al.Surface modified multi-walled carbon nanotubes in CNT/epoxy-composites[J].Chemical Physics Letters,2003,370(5):820-824.
 ZHU J,KIM J D,PENG H Q,et al.Improving the dispersion and integration of single-walled carbon nanotubes in epoxy composites through functionalization[J].Nano Letters,2003,3(8):1107-1113.
 EITAN A,JIANG K Y,DUKES D,et al.Surface modification of multiwalled carbon nanotubes:toward the tailoring of the interface in polymer composites[J].Chemical of Materials,2003,15(16):3198-3201.
 STEUERMAN D W,STAR A,NARIZZANO R,et al.Interaction between conjugated polymers and single-walled carbon nanotubes[J].Journal of Physical Chemistry B,2002,106(12):3124-3130.
 TENG C C,MA C C M,LU C H,et al.Thermal conductivity and structure of non-covalent functionalized graphene/epoxy composites[J].Carbon,2011,49(15):5107-5116.
 郑伟玲,肖潭,朱朦琪,等.聚苯乙炔包覆多壁碳纳米管的制备及其分散性[J].物理化学学报,2009,25(11):2373-2379.ZHENG W L,XIAO T,ZHU M Q,et al.Preparation and dispersivity of multiwalled carbon nanotubes coated by poly (phenylacetylene)[J].Acta Physico-Chimica Sinica,2009,25(11):2373-2379.
 LI M,LI G L,ZHANG Z G,et al.Self-assembly of pH-responsive and fluorescent comb-like amphiphilic copolymers in aqueous media[J].Polymer,2010,51(15):3377-3386.
 ZHU Y,ZHENG X F,YU B R,et al.Efficient gene carriers composed of 2-hydroxypropyl-β-cyclodextrin,ethanolamine-functionalized poly (glycidylmethacrylate),and poly ((2-dimethyl amino) ethyl methacrylate) by combination of ATRP and click chemistry[J].Macromolecular Bioscience,2014,14(8):1135-1148.
 何三雄,高保娇,申艳玲.室温下甲基丙烯酸缩水甘油酯的原子转移自由基溶液聚合反应[J].高分子材料科学与工程,2006,22(5):62-65.HE S X,GAO B J,SHEN Y L.Atom transfer radical polymerization of glycidyl methacrylate in solution system at room temperature[J].Polymer Materials Science and Engineering,2006,22(5):62-65.
 ATES M,YILMAZ K,SHAHRYARI A,et al.A study of the electrochemical behavior of poly[N-vinyl carbazole]formed on carbon-fiber microelectrodes and its response to dopamine[J].IEEE Sensors Journal,2008,8(10):1628-1639.
 董伟.含咔唑类聚合物合成及其光导性能研究[D].哈尔滨:哈尔滨理工大学,2008.DONG W.Study on the preparation of carbazole-based polymers and the properties of photoconductivity[D].Harbin:Harbin University of Science and Technology,2008.
 LOKITZ B S,WEI J F,HINESTROSA J P,et al.Manipulating interfaces through surface confinement of poly (glycidyl methacrylate)-block-poly (vinyldimethylazlactone),a dually reactive block copolymer[J].Macromolecules,2012,45(16):6438-6449.
 FAKIOGLU E,YURUM Y,VEZIROGLU T N.A review of hydrogen storage systems based on boron and its compounds[J].International Journal of Hydrogen Energy,2004,29(13):1371-1376.
 CHEN J,WU F.Review of hydrogen storage in inorganic fullerene-like nanotubes[J].Applied Physics A,2004,78(7):989-994.
 GOJNY F H,SCHULTE K.Functionalisation effect on the thermo-mechanical behavior of multi-wall carbon nanotube/epoxy-composites[J].Composites Science and Technology,2004,64(15):2303-2308.