Abstract: ［Objective］To address the insufficient mechanical and barrier properties of traditional anticorrosion coating，this study synergistically combined nanosheets with tough cardanol-based vinyl ester（VER） resin to construct a high-performance nanoparticle-reinforced bio-based composite anticorrosion coating.［Methods］ Gallic acid-modified graphene oxide（NGA） was prepared by modifying graphene oxide（GO）with gallic acid（GA）via the bridging effect of diethylenetriamine. Subsequently，NGA was incorporated as a functional filler into a tough cardanol-based VER resin. Aseries of NGA/VER composite anticorrosion coatings were then fabricated through a UV curing approach.［Results］ The optimized cured film exhibited a gel content exceeding 99%，a tensile strength over 80 MPa，an elongation at break of 17. 59%，and a pencil hardness of 6H. Additionally，it demonstrated excellent thermal stability， chemical resistance， and long-term anticorrosion performance.［Conclusion］ This study constructed a high-strength and tough anticorrosion nanocomposite coating by synergistically combining modified GO with cardanol-based VER resin， providing an effective strategy for developing high-performance bio-based anticorrosion coating.

Key words: cardanol, vinyl ester resin, gallic acid, graphene oxide, anticorrosion coating

摘要： 【目的】针对传统防腐涂层力学与阻隔性能不足的问题，协同纳米片与韧性腰果酚基乙烯基酯（VER）树脂，构建纳米粒子增强型生物基复合高性能防腐涂层。【方法】通过二乙烯三胺的桥接作用将没食子酸（GA）修饰在氧化石墨烯（ GO）的表面制备没食子酸功能化氧化石墨烯（ NGA）。接着将 NGA作为功能纳米填料，加入韧性腰果酚基 VER树脂中，通过 UV固化获得系列 NGA/VER复合防腐涂层。【结果】优化的涂层样品凝胶率超过 99%，拉伸强度超过 80 MPa，断裂伸长率为 17. 59%，铅笔硬度为 6H，并且具有良好的热稳定性、耐化学品性和长效防腐性能。【结论】通过改性 GO协同腰果酚基 VER，构建高强韧纳米复合防腐涂层，为开发高性能生物基防腐涂层提供了有效策略。

关键词: 腰果酚, 乙烯基酯树脂, 没食子酸, 氧化石墨烯, 防腐涂层

CLC Number: 

• TQ635. 2