Preparation and anti-corrosion effect of benzotriazole-loaded halloysite nanotubes in epoxy coating
Keywords:
Corrosion inhibition, Benzotriazole, Halloysite nanotubeAbstract
Benzotriazole (BTA)-loaded halloysite nanotubes (HNTs) was prepared and its anticorrosion effect was tested in epoxy coating. The XRD and SEM results showed that the raw HNTs is mainly composed of Halloysite-7A and Halloysite-10A with the tubule shapes, which have an outer diameter of approximately 30-80 nm and a length of approximately 0.5 -1.2 μm. The thermal treatment and Zn2+ modification methods were used to improve the BTA loading capacity in HNTs. The results showed that the BTA loading capacity in treated HNTs reached 15.46 wt%, which increased many times compared to the raw HNTs. Initial testing shows that the material exhibited a corrosion inhibitive effect in epoxy coating.
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