Abstract: Against the backdrop of China's national "dual carbon" strategic goals, developing eco-friendly high-performance coatings is an important approach to reducing carbon emissions and environmental pollution. Traditional alkyd resin coatings face issues such as high VOCS emissions and flammability. Therefore, how to provide green coating solutions for petrochemical industry and support sustainable development goals has become a key research focus in this field. To address this issue, this study developed a novel bio-based high-flash-point alkyd enamel by modifying the resin with nanoparticles and evaluated its salt resistance performance. The results indicate that this enamel exhibits excellent performance, with its flash point reaching 63°C, and its pollutant indicators including VOCS, benzene, toluene and xylene all outperform the requirements of relevant national standards. It shows no abnormality after 200 h of salt water resistance, and its salt spray resistance can reach up to 250 h, demonstrating good corrosion resistance.

Key words: bio-based alkyd enamel, nanoparticles, high flash point, performance