为了提高环氧树脂涂层的防腐性能并赋予其自修复性，在四丁基溴化铵的催化下，将植酸接枝到乙二醇二缩水甘油醚上，并与纳米 Al₂O₃混合掺入到环氧树脂中，制备了一种新型复合环氧树脂涂层。探究了纳米 Al₂O₃质量分数对涂层防腐性的影响，并且对其表面形貌、光泽、力学性能、自修复性和防腐性进行了测试。结果表明：改性植酸和纳米 Al₂O₃的加入显著提高了环氧涂层的表面平整度、光泽和硬度。当改性植酸的含量控制在 5%，纳米Al₂O₃的含量达到 5%时，复合涂层的硬度达到 H，腐蚀电流密度达到 7. 85×10^-8 A/cm²，腐蚀电位为 -0. 805 V。除此之外，复合涂层还具有良好的自修复性。改性植酸和纳米Al₂O₃的引入显著提高了环氧树脂涂层的防腐性能、自修复性能和耐久性。

To enhance the anticorrosive resistance of epoxy resin coating and endow themwith self-healing property，a novel composite epoxy resin coating was prepared by graftingphytic acid onto ethylene glycol diglycidyl ether catalyzed by tetrabutylammonium bromideand doped with nano-Al₂O₃ mixed into epoxy resin. The influence of the mass fraction of nano-Al₂O₃ on the anticorrosive resistance of the coating was investigated，along with tests on its surface morphology，gloss，mechanical properties，self-healing ability，and anticorrosive resistance. The results showed that the addition of modified phytic acid and nano-Al₂O₃ significantly improved the surface smoothness，gloss and hardness of the epoxy coating. Whenthe content of modified phytic acid was controlled at 5% and the nano-Al₂O₃ content reached 5%，the composite coating exhibited a hardness of H，the self-corrosion current density reached 7. 85×10^-8 A/cm²，and the corrosion potential was -0. 805 V. In addition，the composite coating demonstrated excellent self-healing properties. The introduction of modifiedphytic acid and nano-Al₂O₃ significantly enhanced the anticorrosive resistance，self-healing ability，and durability of the epoxy resin coating.