Self-healing behavior of epoxy-based double-layer nanocomposite coatings modified with Zirconia nanoparticles

This work reports the self-healing behavior of epoxy-based double-layer nanocomposite coatings designed to mitigate corrosion in various industrial applications. Zirconia (ZrO2) nanoparticles were used as a carrier load separately agent, polyethyleneimine (PEI), and inhibitor, imidazole (IM). The loaded ZrO2 with IM PEI doped into epoxy matrix applied on polished steel substrate form pre top layers coatings, respectively. TEM analysis confirms almost globular morphology zirconia particle size 15–25 nm. chemical bonding interactions among species confirmed through FTIR. synergistic effect agent inhibitor demonstrated pH time dependence release agent. A comparative EIS conducted 3.5 wt% NaCl solution reveals that demonstrate improved resistance performance compared blank single layer reinforced coatings. enhanced can be ascribed efficient response external stimuli potentially considered circumvent oil & gas marine