Self-healing epoxy coating loaded with phytic acid doped polyaniline nanofibers impregnated with benzotriazole for Q235 carbon steel

Abstract Corrosion protection of epoxy coatings containing phytic acid doped polyaniline nanofibers(PANI–PA–NFs) loaded with benzotriazole (PANI-PA-NFs/BTA) for Q235 carbon steel was studied in this work. Synthesized PANI–PA–NFs and the coating performances were characterized in detail. The specific area and inhibitor load rate of the prepared PANI-PA-NFs are 69.4 m2 g−1 and 10.3%, respectively. Epoxy coating containing 2 wt. % PANI-PA-NFs/BTA shows the best protection ability and self-healing function. The self-healing function of epoxy coating containing PANI-PA-NFs/BTA is attributed to the synergistic effect between PANI-PA and BTA.