摘要
本文采用电化学阻抗谱法(EIS)对比分析了水在两种商业化丙烯酸硅自抛光防污涂层A1和A2中的渗透行为,并通过动态模拟实验测试了两种涂层在3.5%人工海水中的抛光速率。EIS测试结果表明,水在两种丙烯酸硅自抛光防污涂层中的渗透均呈典型的Fick扩散,进而拟合计算得到涂层A1的饱和吸水体积百分率约为11.5%,涂层A2的饱和吸水体积百分率约为20%。动态模拟实验表明防污涂层A1在人工海水中的抛光速率为0.15μm/d,涂层A2的抛光速率为0.26μm/d。饱和吸水体积百分率较大更有利于丙烯酸硅树脂水解,抛光速率更快。
Antifouling coatings applied to the surface of marine facilities can significantly cut down on the economic losses caused by biofouling.Among them,self-polishing antifouling coatings have become the leading products in the antifouling coatings market for their good polishing performance and excellent antifouling effect.The permeation behavior of water in two acrylic silicone self-polishing antifouling coatings A1 and A2 was analyzed and compared by electrochemical impedance spectroscopy(EIS),and the polishing rates of the two coatings in 3.5%artificial seawater were measured by dynamic simulation tests.The EIS results demonstrated that the water penetration in both acrylic silicone self-polishing antifouling coatings followed the Fick diffusion pattern,which were then fitted to give a saturated volume percentage of water absorption approximately 11.5%for coating A1 and 20%for coating A2.According to dynamic simulations,the polishing rates in 3.5%artificial seawater was 0.15μm/d for antifouling coating A1 and 0.26μm/d for coating A2.The higher saturated volume percentage of water absorption has a more favorable effect on the ability to hydrolyze of the silicone acrylate resin,which speeds up polishing.
作者
张焕娟
丛巍巍
张凯
苏荣国
桂泰江
Zhang Huanjuan;Cong Weiwei;Zhang Kai;Su Rongguo;Gui Taijiang(College of Chemistry and Chemical Engineering,Ocean University of China,Qingdao 266100,China;State Key Laboratory of Marine Coating,Marine Chemical Research Institute Company Limited,Qingdao 266071,China)
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2024年第2期99-105,共7页
Periodical of Ocean University of China
基金
国家自然科学基金委员会-山东省人民政府联合基金项目(U2006219)
国防基础科研计划项目(JCKY2021513B001)资助。
关键词
自抛光防污涂层
电化学阻抗谱
水渗透
抛光速率
self-polishing antifouling coatings
electrochemical impedance spectroscopy
water permeability
polishing rate
