Preparation and Performance Research of CeO₂-ZrO₂-Al₂O₃/Acrylic Anti-Corrosion Coatings

Abstract

In order to investigate the effect of filling different masses of inorganic filler CeO2-ZrO2-Al2O3(CZA) powder on the anticorrosive and mechanical properties of acrylic coatings, CZA powder samples were synthesized by drying and calcination using the co-precipitation method. The obtained CZA powder was fully dispersed in acrylic resin with commonly used dispersants, defoamers and other additives available in the market, and the acrylic anticorrosive coatings with different mass fractions were prepared on treated iron plates by the scraping method. Meanwhile, the XRD, SEM and EDS methods were used to analyze the physical phase of the CZA powder samples, and the mechanical property tests and electrochemical anticorrosion property tests were utilized to evaluate the characteristics of the coatings, such as adhesion, hardness, roughness, bending performance, wear resistance, tensile strength, elongation at break and anticorrosion performance. Results showed that the as-prepared CZA powders were solid solutions and showed a tetrahedral structure. After adding CZA powder, the hardness of the coating increased from HB to 1H, the bending properties were all 1T, wear resistance was improved, and adhesion was all grade 1. CZA increased the anticorrosive properties of the coatings compared to acrylic anticorrosive coatings without CZA addition, and the best anticorrosive properties of the coatings were obtained when the mass fraction of filler addition was 10%. Overall, the acrylic anticorrosive coating had certain anticorrosive properties and could effectively prevent the corrosion of corrosive media on the material, which presented certain application prospects in the field of anti-corrosion in the future.

Keywords

• cza powder; acrylic resin; coating; roughness; anti-corrosion properties