目的 研究石墨烯/偏钒酸钠/有机硅氧烷改性树脂复合防腐蚀涂层对碳钢板的防腐性能。方法 采用高分子辅助电化学法合成具有优异水分散性的功能化石墨烯，并将其加入到偏钒酸钠/有机硅氧烷改性树脂涂层中，用于碳钢板的表面防腐。通过透射电镜、拉曼光谱和纳米粒度仪对石墨烯的结构和水分散性进行了表征。利用Tafel曲线、电化学阻抗谱和硫酸铜点滴试验，研究了石墨烯/偏钒酸钠/有机硅氧烷改性树脂复合涂层的耐蚀性能。结果 透射电镜和拉曼光谱分析表明成功制备了石墨烯，且石墨烯的Zeta电位值约为?50 mV，赋予了石墨烯优异的水分散性。Tafel曲线测试显示，相对于偏钒酸钠/有机硅氧烷改性树脂复合涂层，加入石墨烯后，复合涂层的腐蚀电流密度明显下降，当石墨烯含量为0.10%（占有机硅氧烷改性树脂的质量百分比）时，腐蚀电流密度下降至0.554×10?6 A/cm2。电化学阻抗谱测试中，石墨烯含量为0.10%的复合涂层的阻抗值最大，表现出良好的抗腐蚀性能。结论 所制备石墨烯的加入能够提高石墨烯/偏钒酸钠/有机硅氧烷改性树脂复合涂层对腐蚀因素（水和氧气）的阻隔作用，使复合涂层具有优异的耐蚀性能。

This work aims to study corrosion resistance of graphene/sodium metavanadate/organic silicone modified resin composite coating on carbon steel plate. Functionalized graphene of stable water dispersibility was synthesized in polymer-assisted electrochemical method and then added sodium metavanadate/organic silicone modified resin coating for surface anticorrosion of carbon steel plate. Structure and water dispersibility of the graphene were characterized with transmission electron microscopy, Raman spectroscopy and nanoparticle size analyzer. Corrosion resistance of the graphene/sodium metavanadate/organic silicone modified resin composite coatings were studied with Tafel curve, electrochemical impedance and copper sulfate dripping test. The results of transmission electron microscopy and Raman spectroscopy demonstrated successful preparation of graphene. Zeta potential of SMA-graphene was about ?50 mV, which endowed the graphene with excellent water dispersibility. Compared with sodium metavanadate/organic silicone modified resin coating, corrosion current density of the coating containing grapheme decreased sharply to 0.554×10?6 A/cm2 when the graphene content was 0.10%. In the electrochemical impedance test, the composite coating containing 0.10% graphene had the maximum impedance and exhibited excellent corrosion resistance. Corrosion resistance of the graphene/sodium metavanadate/organic silicone modified resin composite coating were enhanced with the addition of prepared graphene as barrier property of the improved corrosive medium (water and oxygen) is improved.