Abstract Traditional copper based antifouling coatings possess the defects of short validity period of antifouling and potential Cu2+ pollution in local seawater. This paper starts with antifouling agent and matrix resin to prevent these drawbacks. Polyvinylpyrrolidone-cuprous oxide (PVP-Cu2O) microcapsules are synthesized via sodium sulfite reduction-single condensation method firstly. The morphology, composition, particle size distribution and embedding rate of PVP-Cu2O are characterized. Then the graft resin of hydrophilic polyurethane/epoxy resin (PU/EP) is prepared via a two-step polymerization method using 2,4-toluene diisocyanate, polyethylene glycol mono methyl ether and epoxy resin as raw materials. Afterwards, the antifouling coating is prepared with PVP-Cu2O as antifouling agent and PU/EP as matrix resin. The dispersion, mechanical properties, release property and antifouling performance of the prepared coating are evaluated. Compared with cuprous oxide antifouling coatings, PVP-Cu2O antifouling coating can improve the dispersion of coating and reduce the release rate of antifouling agent to about 11.5 μg·cm−2·d-1. Moreover, the results of testing antifouling panels in shallow submergence suggest that PVP-Cu2O antifouling coating can achieve the prolongation of antifouling effect.

中文翻译：

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聚乙烯吡咯烷酮-氧化亚铜微胶囊防污涂料的制备及性能

摘要 传统的铜基防污涂料存在防污有效期短和可能对当地海水造成Cu2+污染的缺陷。本文从防污剂和基质树脂入手，以防止这些缺点。首先采用亚硫酸钠还原-单缩合法合成聚乙烯吡咯烷酮-氧化亚铜(PVP-Cu2O)微胶囊。表征了PVP-Cu2O的形貌、成分、粒径分布和嵌入率。然后以2,4-甲苯二异氰酸酯、聚乙二醇单甲醚和环氧树脂为原料，通过两步聚合法制备亲水性聚氨酯/环氧树脂接枝树脂(PU/EP)。之后，以PVP-Cu2O为防污剂，PU/EP为基体树脂制备防污涂料。分散，对制备的涂层的力学性能、脱模性能和防污性能进行评价。与氧化亚铜防污涂料相比，PVP-Cu2O防污涂料可以提高涂料的分散性，将防污剂的释放率降低到11.5 μg·cm-2·d-1左右。此外，防污板在浅水下的测试结果表明，PVP-Cu2O防污涂料可以实现防污效果的延长。