目的 合成水性含多巴胺功能基团的仿贻贝粘附蛋白聚合物（PHEA-DOPA），研究在水性环氧涂层中的腐蚀防护机理。方法 通过聚琥珀酰亚胺与乙醇胺和多巴胺的连续氨解反应，成功制备了 PHEA-DOPA 粘附聚合物，并用红外光谱（FTIR）仪、核磁（1HNMR）共振波谱仪和紫外-可见分光光度计对其结构进行了表征。通过电化学阻抗谱（EIS）、扫描电子显微镜（SEM）、石英晶体微天平（QCM-D）和拉曼光谱，对含有 PHEA-DOPA 的水性环氧涂层在碳钢表面的防护性能与机理进行了研究。结果 红外光谱、核磁光谱和紫外-可见光谱结果表明，成功合成了 PHEA-DOPA 聚合物。EIS 和 SEM 结果表明，PHEA-DOPA 的加入能够明显提高涂层的防护性能。QCM-D 和拉曼光谱结果表明 PHEA-DOPA 的防腐机理为：PHEA-DOPA 结构中的 DOPA 基团与 Fe 离子有较强的吸附络合作用，并在碳钢表面和涂层内部反应生成不溶性的 [Fe(DOPA)3]3+络合物，可抑制铁的溶解过程，提高涂层的致密性。结论 PHEA-DOPA 粘附聚合物的加入能够明显提高涂层的防护性能。

The work aims to study corrosion prevention mechanism of synthesized waterborne PHEA-DOPA containing dopamine pendant functional groups in waterborne epoxy anticorrosive coatings. A PHEA-DOPA adhesive polymer was successfully prepared based upon continuous aminolysis reactions among polysuccinimide, ethanolamine and dopamine. Structure of this adhesive polymer was characterized by FTIR, 1HNMR and UV-Vis spectrophotometer. Furthermore, protective properties and mechanism of the waterborne epoxy coating containing PHEA-DOPA were investigated by EIS, scanning electron microscope (SEM), quartz crystal microbalance with dissipation monitoring (QCM-D) and Raman microspectroscopy. The results of FTIR, 1HNMR and UV-Vis measurements demonstrated that the PHEA-DOPA polymer was successfully synthesized. The EIS and SEM results indicated that the addition of PHEA-DOPA could significantly improve protection properties of waterborne epoxy coatings. The evidences of QCM-D and Raman microspectroscopy demonstrated that the DOPA group in PHEA-DOPA structure had strong adsorptive complex effects on Fe3+, and could generate in soluble [Fe(DOPA)3]3+ complexes on the surface of carbon steel and inside the coatings, which inhibited dissolution process of Fe and improved coating density. Addition of PHEA-DOPA adhesive polymer can significantly improve protective properties of waterborne coatings.