【目的】针对海洋岸基装备在严酷海洋气候环境（高盐高湿）下面临的腐蚀问题，制备一种海洋岸基工程装备用长效防护涂料。【方法】以聚天门冬氨酸酯为基体树脂，生物基腰果酚为功能性添加剂， HDI三聚体为固化剂，并添加二氧化硅、钛白粉、硫酸钡及磷酸锌等填料，制备了一种生物基聚天门冬氨酸酯聚脲涂料。对聚脲涂层进行动态热力学、水接触角、耐高低温交变及耐盐雾等测试，并使用扫描电镜和红外光谱仪对涂层的结构和形貌进行表征。【结果】引入腰果酚后，涂层柔韧性由 5 mm提高至 4 mm，附着力可达 8 MPa；水接触角达到 97. 8 °，中性盐雾及高低温交变老化 2 000 h后不起泡、不脱落、不开裂，具有良好的耐腐蚀性和稳定性。【结论】聚天门冬氨酸酯聚脲涂层的力学性能及耐腐蚀性优异；引入腰果酚后，可提高涂层柔韧性并增强涂层对金属基材附着力，涂层的疏水性及分子交联度的提升，进一步提高了涂层防腐性能。

［Objective］To address the corrosion issues faced by marine shore-based equipment in harsh marine climates（high salinity and humidity），a long-term protective coating was developed for such applications.［Methods］ A bio-based polyaspartic ester polyurea coating was prepared usingpolyaspartic ester as the matrix resin，bio-based cardanol as a functional additive，HDI trimer as the curing agent，and fillers such as silica，titanium dioxide，barium sulfate，and zinc phosphate. The polyurea coating was subjected to dynamic thermmechanical analysis，water contact angle measurements，resistance to high-low temperature alternation tests，and salt spray resistance tests. Itsstructure and morphology were characterized using scanning electron microscopy and infraredspectroscopy.［Results］The incorporation of cardanol improved the coating’s flexibility from 5 mm to 4 mm and enhanced its adhesion to 8 MPa. The water contact angle reached 97. 8°. After 2 000 hours ofneutral salt spray and high-low temperature alternation tests，the coating exhibited no blistering， delamination，or cracking，indicating excellent corrosion protection and stability.［Conclusion］The polyaspartic ester polyurea coating exhibits outstanding mechanical and anticorrosive properties. Theincorporation of cardanol improves the flexibility of the coating and enhances its adhesion to metalsubstrates. Additionally，the hydrophobic characteristics of the coating and the increased molecularcrosslinking density further enhance its corrosion resistance performance.