Abstract: ［Objective］ To address the issue of poor static antifouling effect of traditional antifouling coatings.［Methods］ Using tetrabutyl titanate as a catalyst，lactic acid，glycolic acid， caprolactone and 1，4-butanediol were polymerized to synthesize a main-chain-degradable antifoulingresin. The antifouling coating was subsequently prepared from this resin. The structure of the resin wascharacterized by Fourier Transform Infrared Spectroscopy（FT-IR） The physical properties of the coating，such as drying time，flexibility，and adhesion，were measured..The comprehensive performanceof the coating was systematically evaluated by measureing its copper ion release rate，self-polishingrate，and actual marine antifouling performance.［Results］ When lactic acid，glycolic acid and caprolactone were combined in a specific ratio，the resin exhibited optimal performance. The marineantifouling coating formulated from this resin demonstrated excellent adhesion and a stable，long-lasting polishing rate. After a 12-month of shallow-sea hanging plate test，the coating surface showed no obvious marine organism adhesion， demonstrating significant antifouling performance.［Conclusion］The main-chain-degradable marine antifouling coatings developed in this studysuccessfully overcame the limitation of unsatisfactory static antifouling performance in traditional self-polishing coatings. The coatings can be widely used in ships，offshore platform underwater structures， port terminals and other marine installations，indicating broad prospects in the field of marine engineering.

Key words: glycolic acid, antifouling coating, main-chain-degradation, copper ion release rate, static antifouling

摘要： 【目的】解决传统防污涂料静态防污效果不佳的问题。【方法】以钛酸四丁酯为催化剂，使乳酸、乙醇酸、己内酯和 1，4-丁二醇反应，制得主链降解型防污树脂并复配得到防污涂料；通过傅立叶变换红外光谱（FT-IR）对树脂的化学结构进行表征；测定涂层干燥时间、柔韧性及附着力等物理性能，结合铜离子释放率、自抛光速率及实海挂板试验的防污效果来系统评价涂料的综合性能。【结果】当乳酸、乙醇酸及己内酯按照一定比例复配，制得的树脂性能良好。基于此树脂制得的海洋防污涂料表现出优异的附着力和稳定持久的抛光速率。经 12个月的浅海挂板试验后，涂层表面无明显海生物附着，具有显著的防污效果。【结论】制备的主链降解型海洋防污涂料具有良好的静态防污效果，可广泛应用于船舶、海洋平台水下结构及港口码头等设施，在海洋工程领域具有广阔的应用前景。

关键词: 乙醇酸, 防污涂料, 主链降解, 铜离子释放率, 静态防污

CLC Number: 

• TQ637. 3