Abstract
The main protection mechanism of anti-corrosion coatings was to shield and hinder corrosive media. When inorganic flake fillers were added to improve the anti-corrosion performance of the coatings, it was necessary to solve the problem of inorganic-organic compatibility. This paper combined the barrier properties of flaky and chemically inert basalt scales with the corrosion inhibition of aniline trimers, and prepared aniline trimers modified basalt scales to improve the anticorrosion performance of the coatings. Aniline trimer was conducive to the compatibility and dispersion of basalt flakes in epoxy resin. The enhancement of shielding and anti-corrosion performance of the coatings was attributed to the dispersed distribution of basalt flakes, which reduced the water content and diffusion rate in coatings. Aniline trimer acted as the corrosion inhibitor. When corrosive media penetrated the coatings, it adsorbed on the metal surface and formed protective films, thereby enhancing the corrosion resistance of the coatings. The aniline trimer modified basalt flakes increased the anti-corrosion resistance of epoxy coatings by two orders of magnitude, and its optimal mass content was about 10%.
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