用混酸对多壁碳纳米管(MWCNTs)进行了酸化处理,然后通过溶胶-凝胶法制备了TiO2包覆MWCNTs(TiO2-MWCNTs)核壳材料,并通过X射线衍射(XRD)、热重分析(TGA)等手段对其包覆结果进行了验证.用硅烷偶联剂KH560对TiO2-MWCNTs及MWCNTs进行了改性,分别制备了TiO2-MWCNTs/epoxy、MWCNTs/epoxy复合环氧涂层以及纯环氧涂层,利用EIS测试了涂层的电学性能,通过材料试验机(MTS)测定了涂层的柔韧性,用扫描电镜(SEM)观察了涂层表面形貌.结果表明:TiO2-MWCNTs在环氧树脂中具有良好的分散性,TiO2-MWC-NTs/epoxy复合涂层对腐蚀介质具有较好的抗渗透性能;TiO2包覆后大大增加了涂层的柔韧性.
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