A novel water-based rust conversion agent (abbreviated as “TE-GAE”) was firstly synthesized using gallic acid (3,4,5-Trihydroxybenzoic acid, abbreviated as “GA”) and triethanolamine (abbreviated as “TE”) by esterification reaction. A new type of rust conversion coating (abbreviated as “TE-GAE coating”) containing the TE-GAE and additives was also prepared. The structural feature of rust conversion agent TE-GAE was characterized using Fourier transform infrared spectrum (FT-IR). The effect of the synthetic water-based TE-GAE coating on original rust layer were investigated by X-ray diffractometer (XRD) and Scanning electron microscope (SEM). Compared with traditional rust conversion coatings that apply tannic acid and phosphoric acid as rust converters, the as-synthesized integrated TE-GAE coating firstly revolutionized the application method of the anti-corrosion coatings, combined the traditional “primer” and “topcoat” into one, and improved engineering efficiency while ensuring protective effect. Additionally, the adhesion test indicated that the integrated TE-GAE coating presented remarkably strong film adhesion between the coating and steel substrate. Meanwhile, the neutral salt spray test and weather-resistant test showed significant corrosion resistance. Furthermore, a corrosion resistance mechanism including the combined effect of the rust conversion, barrier and corrosion inhibition for the integrated TE-GAE coating was tentatively proposed, which indicating that the rust converter chelates with Fe²⁺/Fe³⁺ to form a dense chelating film, extend the penetration path of corrosive medium and delay the occurrence of corrosion process. Thus, such a “green” and “efficient” integrated rust conversion coating is promising for protecting steel from corrosion, which is critical for the sustainable development of functional coating materials.

以没食子酸（3,4,5-三羟基苯甲酸，简称“GA”）和三乙醇胺（简称“TE”）为原料，通过酯化反应合成了一种新型水性锈转化剂（简称“TE-GAE”）反应。还制备了含有TE-GAE和添加剂的新型锈转化涂层（简称“TE-GAE涂层”）。使用傅里叶变换红外光谱（FT-IR）表征锈转化剂TE-GAE的结构特征。通过X射线衍射仪（XRD）和扫描电子显微镜（SEM）研究了合成水性TE-GAE涂层对原始锈层的影响。与传统的以单宁酸和磷酸为锈转化剂的锈转化涂料相比，合成后的一体化TE-GAE涂层首次革新了防腐涂层的应用方式，将传统的“底漆”和“面漆”合二为一，在保证防护效果的同时提高了工程效率。此外，附着力测试表明，集成的 TE-GAE 涂层在涂层和钢基材之间呈现出非常强的膜附着力。同时，中性盐雾试验和耐候试验显示出显着的耐腐蚀性能。此外，初步提出了综合 TE-GAE 涂层的锈转化、阻隔和腐蚀抑制的综合作用的耐腐蚀机制，表明锈转化剂与 Fe 螯合。在保证防护效果的同时提高工程效率。此外，附着力测试表明，集成的 TE-GAE 涂层在涂层和钢基材之间呈现出非常强的膜附着力。同时，中性盐雾试验和耐候试验显示出显着的耐腐蚀性能。此外，初步提出了综合 TE-GAE 涂层的锈转化、阻隔和腐蚀抑制的综合作用的耐腐蚀机制，表明锈转化剂与 Fe 螯合。在保证防护效果的同时提高工程效率。此外，附着力测试表明，集成的 TE-GAE 涂层在涂层和钢基材之间呈现出非常强的膜附着力。同时，中性盐雾试验和耐候试验显示出显着的耐腐蚀性能。此外，初步提出了综合 TE-GAE 涂层的锈转化、阻隔和腐蚀抑制的综合作用的耐腐蚀机制，表明锈转化剂与 Fe 螯合。中性盐雾试验和耐候试验显示出显着的耐腐蚀性。此外，初步提出了综合 TE-GAE 涂层的锈转化、阻隔和腐蚀抑制的综合作用的耐腐蚀机制，表明锈转化剂与 Fe 螯合。中性盐雾试验和耐候试验显示出显着的耐腐蚀性。此外，初步提出了综合 TE-GAE 涂层的锈转化、阻隔和腐蚀抑制的综合作用的耐腐蚀机制，表明锈转化剂与 Fe 螯合。²⁺ /Fe ³⁺形成致密的螯合膜，延长腐蚀介质的渗透路径，延缓腐蚀过程的发生。因此，这种“绿色”、“高效”的综合防锈转化涂层有望用于保护钢铁免受腐蚀，这对功能涂层材料的可持续发展至关重要。