Zinc dimethacrylate modified epoxy coating for corros 2027 Progress in Organ

Corrosion-related asset losses and safety risks are prompting the need for smarter protective coating strategies. This study investigates the incorporation of zinc dimethacrylate (ZDMA) into epoxy coatings to enhance corrosion protection for carbon steel. The successful integration of ZDMA into the epoxy network was confirmed via techniques such as Raman and Attenuated Total Reflectance-Fourier Transform Infrared Spectroscopy (ATR-FTIR), indicating Zn2+ coordination with specific functional groups in the matrix through coordination bonds. Compared to neat epoxy coatings, ZDMA-modified coatings exhibited reduced water absorption, likely attributed to a denser cross-linked structure and improved barrier properties. Electrochemical Impedance Spectroscopy (EIS) analyses revealed that the modified coating demonstrated excellent corrosion resistance in a 3.5 wt% NaCl solution over a 180-day immersion. Observations of high low-frequency impedance modulus and phase angles near 90° indicated sustained capacitive behavior and effective barrier performance. Notably, in response to corrosion onset and defect presence, rapid recovery of impedance to values measured on the intact coating was documented, showcasing the self-healing response of the modified coatings, further corroborated by micro-scale scanning vibrating electrode technique (SVET) and energy-dispersive X-ray spectroscopy (EDS) findings.