FU Ying1, ZHANG Xiao-dong1,2, SUN De-shuai2, LIU Xin2
1. College of Material Science and Engineering, Qingdao University, Qingdao 266071; 2. College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China
Abstract：Cuprous oxide is an important antifouling agent in marine antifouling coats. The release rate of copper ions in coating affects the antifouling properties observably. Furthermore, the copper ions in seawater also influence the growth of marine organisms. So it is very important to control the release rate of copper ion strictly that can reduce the risk of marine organisms. In this study, the release rates of cuprous oxide in the new polyacrylate antifouling coatings were measured in artificial seawater. The effects of coat composition and seawater temperature on copper ion release rates were monitored. Experimental results showed that the mixed polyacrylate coat could release cuprous oxide quickly and stably, which exhibited excellent antifouling property. The dosage of inert pigment could affect the porosity of the coat. When the PVC values were in range of 0.136~0.154, the release rate of copper ion could be suitable. While the content of cuprous oxide exceeded 26.9%, the copper ion could be used for a long time in the coat. As seawater temperature increased, the release rate of copper ion could increase several times.
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