Investigate the effect nanoparticles of silica and zinc phosphate pigment on anti-corrosion and thermal properties of Epoxy coatings

Coating the surface of metal pipes is one of the solutions to protect pipelines against various types of corrosion. Adding inorganic nanoparticles to epoxy resin can improve the mechanical and chemical resistance of the coating. The purpose of this study is synthesis of epoxy and characterization of anticorrosion and thermal resistance. To accomplish this aim, epoxy nanocomposite were synthesized from nanosilica, Epiran 5s along with 3 different hardeners. The surface of silica nano particles was modified with trimethoxy methyl silane before using. Anti-corrosion properties were evaluated by Plunging tests, the results of this test indicated the superiority of the anti-corrosion properties of the coating containing phthalic anhydride hardener compared to other coatings. Finally, according to the TGA curves obtained from experiments and using mathematical equations relationships, activation energy for the production each of the coatings obtained subsequent test results also show that the thermal properties of the coating hardener of phthalic anhydride is higher than the others. The results show that thermal stability nanocomposite coating containing phthalic anhydride hardener is improved by 47% after modification with silane.