摘要： 先利用混酸体系和 3－氨丙基三乙氧基硅烷偶联剂（KH550）对多壁碳纳米管（MWCNTs）进行表面修饰，然后将修饰后的 MWCNTs加入苯丙乳液中，成功制备了具有良好抗静电性能和力学性能的碳纳米管／苯丙乳液改性内墙涂料。利用透射电镜，对修饰前后的 MWCNTs进行了热重分析。结果表明：KH550成功地接枝到 MWCNTs表面，修饰后的 MWCNTs能实现很好的分散。研究了 MWCNTs用量对所制备涂料的导电性能、力学性能的影响。研究表明当MWCNTs添加量达到 2.50%时，涂料的表面电阻最小，为1.42×10⁷Ω，力学性能最佳。

关键词: 多壁碳纳米管, 苯丙乳液, 涂料

Abstract: Multi-walled carbon nanotubes (MWCNTs) were first surface treated with concentrated H₂S0₄/HNO₃ mixture, and then a silane coupling agent, 3-aminopropyltriethoxysilane(KH550), was gralted onto the MWCNTs, which was then added into styrene-acrylate emulsion, formulating the title MWCNTs/styrene -acrylate compound coatings for interior wall with good antistatic and mechanical properties.The MWCNTs and modified MWCNTs were studied by transmission electron microscopy(TEM)and thermogravimetic analysis(TG). The result showed that the silane coupling agent was successfully grafted onto the oxidized surface of MWCNTs and the modified MWCNTs celd was well dispersed. The effects of different MWCNTs contents on the electrical conductivity and the mechanical properties of coatings were studied.When MWCNTs content was up to 2. 50%, the mechanical properties of coatings showed the best, and the surfurce resistance of coatings was 1.42 x10⁷Ω.

Key words: multi-walled carbon nanotubes, styrene-acrylate emulsion, coatings