Effects of Immersion Temperature on the Performance of a Marine Epoxy-Based Organic Coating for Ballast Tanks

The degradation behavior of an actual marine epoxy-based organic coating for ballast tanks immersed in 3.5% NaCl solution at different temperatures was investigated by employing electrochemical impedance spectroscopy and adhesion measurements. Elevated immersion temperature (e.g., 35, 45 55 °C) could greatly deteriorate protective performance, including barrier properties, wet strength, water uptake diffusion, this effect become more pronounced with prolonged time. diffusion based on sorption curves consistent strength temperature-dependent performance evaluation the coating. values quasi-saturation stage showed expected dependence when exceeded 35 °C. Breakpoint frequency also be used qualitatively evaluating time-varying efficiently.