CeO 2填充环氧树脂，并用偶联剂 KH560对CeO 2进行表面改性，通过溶液混合法制备 CeO 2/环氧树脂复合材料.分别通过拉曼光谱仪、紫外漫反射光谱仪、场发射扫描电子显微镜和电化学工作站对CeO 2/环氧树脂复合材料的微观结构和电化学防腐性能进行测试.结果表明，表面改性的 CeO 2在环氧树脂基体中具有更好的分散性；所制备的改性后 CeO 2/环氧树脂复合涂层对镀锌板附着力达到1级；与水接触角达到82．5°；电化学防腐性能测试中其浸泡30 min阻抗值在109Ω·cm2以上，浸泡7 d 阻抗值基本保持在107Ω·cm2左右，高于未改性的 CeO 2制备的复合材料和普通环氧树脂材料.改性后 CeO 2/环氧树脂复合材料的附着力、疏水性和化学防腐性能明显优于未改性的 CeO 2制备的复合材料和普通环氧树脂材料.
CeO 2/epoxy composite was prepared by solution process with CeO 2 powder modified by KH560 cou-pling agent.The impact of coupling agent on microstructure of composites was investigated by Raman,UV-vis DRS and FESEM.The electrochemical corrosion behavior of epoxy resin treated CeO 2/epoxy composite and un-treated CeO 2/epoxy composite were measured by CHI660D electrochemical workstation respectively.It showed that the coupling agent improved the interaction between CeO 2 and epoxy.Both the fraction of CeO 2 and KH560 had effective on adhesive force and corrosion resistance.The adhesive force of the composite with treated CeO 2 on galvanized steel was one grade,the contact angle of water against it to be 82.5°and its electrochemical imped-ance was 10 9 Ω·cm2 at the beginning of immersion time and about 10 7 Ω·cm2 in the later stage.It was higher than that with untreated CeO 2 and epoxy resin.The adhesive force and protective performance of the untreated CeO 2/epoxy composite was better than that of the epoxy resin.The treated CeO 2/epoxy composite was the best among the three materials.
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