【摘要】 通过硅溶胶来改善环氧树脂E-44的性能,以改性环氧树脂为基料,制备了富锌防腐涂料。应用电化学交流阻抗法研究了涂料涂层在质量分数为3.5%的NaCl溶液中的腐蚀过程。实验结果表明,添加硅溶胶可明显改善环氧树脂性能,当硅溶胶与环氧树脂E-44质量比5∶3防腐性能最好,同时该涂层具有较好的力学性能、耐热性和耐候性。根据交流阻抗谱图(E IS)响应特征,涂层在浸泡过程可分为3个主要阶段且涂层电阻变小。更多还原

【Abstract】 Silica sol is used to improve the performance of epoxy resin E-44.The zinc-rich anti-corrosive coating is prepared by the modified epoxy resin-based material.Electrochemical impedance spectroscopy(EIS) is employed to investigate the corrosion regulations of modified epoxy coatings on carbon steel in 3.5%(by mass) NaCl solution.The results show that silica sol can improve the anti-corrosion performance of the coatings.When the mass ratio of silica sol and epoxy resin E-44 is 5∶3,the optimal anti-corrosive coatings with excellent mechanical properties,heat resistance and weatherability resistance,can be obtained.According to the EIS characteristics,the entire deterioration processes of the coatings can be divided into three main stages.The resistance of the coatings decreases with the time of deterioration.更多还原