Graphene anticorrosive coating material

Abstract

The invention provides a graphene anticorrosive coating material. The graphene anticorrosive coating material comprises the following ingredients in parts by weight: 40-50 parts of acrylic resin, 10-30 parts of epoxy resin, 5-15 parts of ethylene-vinyl acetate copolymer, 1-10 parts of ceramic resin, 2-8 parts of melamine, 5-12 parts of polyaniline, 20-25 parts of graphene, 4-10 parts of butyl glycol ether, 1-5 parts of heavy calcium carbonate, 2-6 parts of chlorinated paraffin, 5-10 parts of nano titanium dioxide, 0.1-1 part of isothiazolinone derivative, 0.1-1 part of emulsifier, 0.1-1 part of dispersant, 0.1-1 part of antifoamer, 0.1-1 part of humectant, 20-30 parts of ethanol and 50-100 parts of butyl acetate. By adding the graphene, a filler ingredient in the coating material is more disorderly in arrangement, the dispersity is improved, and the filler ingredient can be thoroughly filled in the acrylic resin and the epoxy resin, so as to repair void defects of the coating materialand improve the compactness of the coating material; and the graphene can be used for effectively lowering charge transfer inside a coating, so that the screening action on corrosive media is improved.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion coatings, in particular to a graphene anti-corrosion coating. Background technique [0002] The use of coatings for anticorrosion is one of the most mature and widely used methods in metal anticorrosion technology. Metal ions doped in traditional anti-corrosion coatings are easy to seep out, and the coating and metal have a galvanic corrosion effect, which accelerates the corrosion of metal materials; lead-based and chromate-based heavy metals in fillers are prone to heavy metal pollution; the content of volatile organic compounds (VOCs) is high, Affect human health and cause environmental pollution. Therefore, it is an urgent problem to develop a kind of anticorrosion coating with strong anticorrosion performance. [0003] Graphene is one of the materials with the highest strength known, and it also has good toughness and can be bent. The theoretical Young's modulus of graphene reaches 1...

AI Technical Summary

Problems solved by technology

For the first time, CHEN et al. attached graphene to the copper surface by vapor deposition method, constructed a graphene anti-corrosion coating model, and proved that graphene can be applied in the field of anti-corrosion, but found that the graphene coating on the copper surface has the problem of inhomogeneity. The boundary between the layer and the layer is incomplete; PRASAI et al. used vapor deposition technology to directly deposit graphene and pyrrole monomers on the copper surface to prepare a dense and uniform ultra-thin load layer, which solved the gap defect problem of the graphene coating, and the anti-corrosion effect Better, but there are still disadvantages such as high coating cost and high operation precision requirements