用溶液聚合法合成了丙烯酸树脂并对其结构进行了表征.将合成的丙烯酸树脂与环氧树脂以质量比1∶5混合,并与防锈颜料、填料、助剂、溶剂复配成环氧防腐涂料,测试了漆膜的性能;用电化学阻抗技术(EIS)和Tafel极化曲线技术评价了其防腐性能.实验结果表明:甲基丙烯酸缩水甘油酯(GMA)单体完全聚合,合成的丙烯酸树脂中带有环氧基;与纯环氧树脂防腐涂料相比,改性后的环氧防腐涂料层间附着力更高、柔韧性有所改善;带环氧基团丙烯酸树脂改性后的环氧防腐涂料防腐性能优异.
An acrylic resin was synthesized by solution polymerization and its structure was characterized.The anticorrosive epoxy coating was prepared by mixing the prepared acrylic resin and epoxy resin at the mass ratio of 1 ∶ 5 in addition to antirust pigments,fillers,additives and solvents.The properties of the cured film were examined and the corrosion resistance was tested by electrochemical impedance spectroscopy (EIS) and Tafel polarization curve technique.The results indicated that the glycidyl methacrylate (GMA) could be polymerized completely and the resulted polymer had epoxy group.Compared with the pure epoxy resin anticorrosive coating,the modified epoxy resin anticorrosive coating had higher interlayer adhesion and improved flexibility.In particular,the epoxy resin anticorrosive coating modified with acrylic resin containing epoxy groups had excellent corrosion resistance.
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