Synthesis of Zinc Acetate@ZIF-۸ Nanocomposite and Investigation of Its Properties for Making Smart Anti-Corrosion Coating

The present study used a Metal-Organic Framework as an inhibitor carrier in epoxy anti-corrosion coating. For this purpose, ZIF-۸ was first synthesized, and then the synthesized structure was characterized by XRD, FTIR, TGA, BET, and SEM analyses. Next, the Zinc Acetate inhibitor was loaded into the ZIF-۸ cavities. BET, TGA, and SEM analyses were used to confirm the loading, and ICP analysis was used to investigate the inhibitor release pattern. Then, by adding ZIF-۸ containing inhibitor to the epoxy coating, applying the coating to steel sheets, and creating artificial scratches on the coatings, the anti-corrosion properties of the samples were evaluated by electrochemical impedance spectroscopy, potentiodynamic polarization, pull-off, and salt spray tests. The results of the electrochemical spectroscopy test indicate the improvement of anti-corrosion performance in the sample containing the inhibitor, so that after ۶ hours of immersion in ۳.۵% sodium chloride solution, the charge transfer resistance value in the EP sample is ۹۹۹, and in the ZA@ZIF-۸/EP sample is ۴۰۸۲ Ωcm², which confirms the inhibitor effect. Finally, the impact of adding the inhibitor on adhesion and wettability properties was investigated

کلیدواژه ها:

Metal–Organic Framework (MOF) ، Corrosion Resistance of Epoxy Coating ، Electrochemical Impedance Spectroscopy (EIS) ، Inhibitor Loading ، چارچوب آلی - فلزی ، خواص ضدخوردگی پوشش اپوکسی ، طیف سنجی امپدانس الکتروشیمیایی ، بارگذاری بازدارنده