Abstract

The polyacrylate-g-polysiloxane copolymers were prepared by condensation reaction of polyacrylate with polysiloxane. Nine different formulations of marine antifouling coatings based on TiO₂ and polyacrylate-g-polysiloxane were fabricated. The coatings had strong adhesion to substrate due to the incorporation of main-chain acrylic moieties. The side-chain Si–O bonds from polysiloxane enable the copolymer to hydrolytically degrade, and provide a self-polishing character and the low surface energy to the copolymer coating. The performance of nine formulations was evaluated, and the Y7 coating exhibited hydrophobic, 6H pencil hardness and5B cross-cut adhesion. The properties of the Y7 coatings are substrate-independent. Antibacterial test and cytotoxicity test were conducted to verify that nano-TiO₂ particles inside marine antifouling coating inhibited bacterial growth and enhanced anti-bio adhesion. The results of marine field test inartificial sea waters for six months reveal that the side-chains polysiloxane leads to a self-polishing, low surface energy surface and a better antifouling property.

中文翻译：

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自抛光聚丙烯酸酯-g-聚硅氧烷涂料，用于船舶防污涂料

摘要

所述聚丙烯酸酯克-聚硅氧烷共聚物，通过用聚硅氧烷的聚丙烯酸酯的缩合反应来制备。基于二氧化钛海洋防污涂料的九个不同的制剂₂和聚丙烯酸酯克制备了聚硅氧烷。由于掺入了主链丙烯酸部分，涂料对基材具有很强的附着力。来自聚硅氧烷的侧链Si-O键使共聚物能够水解降解，并为共聚物涂层提供自抛光特性和低表面能。评价了九种配方的性能，Y7涂层表现出疏水性，6H铅笔硬度和5B横切粘合力。Y7涂层的性能与基材无关。进行了抗菌测试和细胞毒性测试，以验证纳米TiO ₂海洋防污涂料中的颗粒可抑制细菌生长并增强抗生物粘附性。在六个月的人工海水中进行的海洋现场测试结果表明，侧链聚硅氧烷具有自抛光性，低表面能表面和更好的防污性能。