石墨烯防腐涂层对油罐沉积水的防腐机制研究

发布时间：2018-03-09 13:30

本文选题：油罐　切入点：石墨烯　出处：《表面技术》2017年11期 　论文类型：期刊论文

【摘要】：目的探究石墨烯基防护涂层/碳钢体系在原油储罐沉积水中的防护机制。方法以实际原油储罐的沉积水为腐蚀介质,以自制石墨烯底漆和石墨烯面漆为防护涂层体系,采用交流阻抗谱、动电位极化曲线,结合盐雾实验探究石墨烯涂层体系在沉积水中的腐蚀行为和失效衍化机制。结果石墨烯底漆在浸泡初期对碳钢具有一定的防护效果,随着浸泡时间的延长,水分子逐渐渗透涂层,涂层逐渐失效。采用石墨烯面漆和石墨烯底漆搭配,可显著提高涂层对碳钢在沉积水中的防护性能,浸泡46 d后,涂层电阻仍为162 M?·cm。结论石墨烯底漆和石墨烯面漆涂层体系对储罐底板在沉积水中具有良好的防护性能,研究成果对油罐底板涂层防护选材具有理论指导意义。
[Abstract]:Objective to explore the protective mechanism of graphene based protective coating / carbon steel system in the water deposited from crude oil tank. Methods the corrosion medium of the actual crude oil tank was used as corrosion medium, and the self-made graphene primer and graphene topcoat were used as protective coating system. The corrosion behavior and failure evolution mechanism of graphene coating system in deposited water were investigated by means of AC impedance spectroscopy, potentiodynamic polarization curve and salt spray test. Results the graphene primer had a certain protective effect on carbon steel in the early stage of soaking. With the prolongation of soaking time, the water molecules gradually permeate the coating, and the coating gradually fails. The protective performance of the coating on carbon steel in the deposited water can be improved significantly by using the combination of graphene topcoat and graphene primer, and the coating is soaked for 46 days. The coating resistance is still 162m? Conclusion the coating system of graphene primer and graphene topcoat has good protective performance on tank bottom in the depositional water, and the research results are of theoretical significance for the selection of coating materials for oil tank bottom plate.
【作者单位】：浙江海洋大学船舶与机电工程学院;中国科学院宁波材料技术与工程研究所中国科学院海洋新材料与应用技术重点实验室浙江省海洋材料与防护技术重点实验室;芜湖春风新材料有限公司;
【基金】：国家自然科学基金(41506098) 中国博士后基金和第九批特等资助项目(2015M580528,2016T90553) 浙江省博士后科研项目择优资助项目(BSH1502160) 宁波市自然科学基金(2016A610261)~~
【分类号】：TE988

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