天然产物基无铜自抛光防污涂料的制备与性能

随着人们环保意识的增强和环保法规的日益严格，不含重金属防污剂的环境友好防污涂料成为目前研究的热点。文中通过室内的接触角、水解失重和吸水率跟踪测试，研究了3种主链降解型聚丙烯酸锌树脂的表面润湿性能和自抛光性能；并将其与天然产物防污剂(Butenolide)复配制备了天然产物基无铜自抛光防污涂料，通过防污剂释放率测试和浅海浸泡试验对防污剂的释放行为和实海防污能力进行了研究。结果表明：主链降解型聚丙烯酸锌树脂H100Z具有优异的自抛光性能(质量损失可达8.4 mg·cm⁻²)和较低的溶胀程度(吸水率仅为12.3%)，可作为Butenolide的载体，实现对其可控、稳定和持续的释放，该防污涂料在南海海域(深圳)和东海海域(厦门)浸泡3个月后均展现出优异的防污效果。

Preparation and Performance of Natural Product-based Copper-free Self-polishing Marine Antifouling Coatings

Due to the environmental concern about traditional antifouling coatings, developing eco-friendly antifouling coatings without heavy-metal antifoulants has become the focus of current research. The surface wettability and self-polishing property of three main-chain degradable poly (zinc acrylate) copolymers were investigated by water contact angle, hydrolytic degradation and water absorption tests. The copolymers were mixed with butenolide to prepare natural product-based copper-free self-polishing marine antifouling coatings. The release behavior of butenolide and the antifouling performance of this system were evaluated by release rate and marine field tests. Results show that H100Z has excellent self-polishing property (mass loss up to 8.4 mg·cm⁻²) and low degree of swelling (water absorption of only 12.3%). In particular, it can serve as the carrier and controlled release system of environmentally friendly antifoulant, where the butenolide can be released in a controlled, steady and continuous manner. This system exhibits excellent antifouling ability after immersion in South China Sea (Shenzhen) and East China Sea (Xiamen) for 3 months.