Application of graphene solution in epoxy paint systems
Abstract
This study focuses on applying graphene solution to epoxy paint systems to enhance corrosion protection for steel structures. Graphene material is dispersed in xylene solvent to create a solution with high dispersion stability. The graphene solution is added to the two-component epoxy paint system using a stirring method. Test results show that the paint film is resistant to alkali, acid, salt water, and heat. Notably, samples with high graphene content increased impact resistance from 50 to 60 kg.m compared to samples without graphene. The immersion test in 5% NaCl solution (salt spray test) after 2 months showed that samples with graphene exhibited no blistering or rusting, while control samples began to show these signs. Accelerated weathering tests also demonstrated that samples with graphene had better UV resistance with less gloss reduction. When applied to commercial paints, graphene improved film hardness from F, HB, H to 2H and 3H, reduced wear resistance from 5.65% to 2.43%, and increased adhesion strength from 10.2 MPa to 13.5 MPa. Salt spray testing after 816 hours indicated that samples with graphene demonstrated superior anti-corrosion resistance. The product has been registered under the Peraphene trademark and was showcased at the 2024 high-tech exhibition.
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