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

• DOI: 10.1016/j.corsci.2019.02.023
• Publication Date: 2019-02-19T02:08:05Z
• Authors: Yongsheng Hao; Yifan Zhao; Xiaoxuan Yang; Bo Hu; Shiwen Ye; Lixin Song; Rongguang Li
• Keywords: Benzotriazole; 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.