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４－甲基ｒ－氧代－苯基－丁酸复合物可作为长效水基防腐蚀涂料用的缓蚀剂，替代传统用的缓蚀颜料和重金属盐等。用电化学阻抗技术和线性扫描方法研究了缓蚀剂的作用机理，暴露试验表明，这种复合缓蚀剂在水基涂料中具有长效的防护作用和防止焊缝（线）腐蚀，且缓蚀作用效率很
4-Methyl r-oxo-phenyl-butyric acid compound can be used as a corrosion inhibitor for long-lasting water-based anticorrosive coating instead of traditional corrosion inhibiting pigments and heavy metal salts. The mechanism of corrosion inhibitor was studied by electrochemical impedance spectroscopy (EIS) and linear scanning method. Exposure experiments show that this composite inhibitor has long-term protective effect in water-based coatings and prevents the corrosion of weld lines Erosion effect is very efficient