Graphene anticorrosive coating and preparation method thereof

Abstract

The invention provides a graphene anticorrosive coating and a preparation method thereof. The graphene anticorrosive coating is prepared from a component A and a component B, wherein in percentage by weight, the component A comprises 20%-30% of epoxy resin, 1%-3% of graphene, 0.5%-2% of a dispersing agent, 15%-25% of talcum powder, 10%-20% of zinc powder and 1%-5% of aluminum paste, and the component B comprises 30%-50% of cashew nut shell oil phenolic amide and 10%-30% of polyamide. The graphene anticorrosive coating provided by the invention is safe and environment-friendly, is moderate in cost, simple and convenient in process, stable in storage, excellent in adhesive force on base materials such as steel, iron and the like, excellent in mechanical performance such as flexibility, wear resistance performance and the like, and prominent in protective effects in chemical media such as an acid, an alkali, a salt and the like, shows excellent protective performance such as high and low temperature resistance, high salinity resistance and the like in a condition of a simulation marine environment experiment, and can be applied as primer for an anticorrosive coating in ocean engineering with various steel and iron materials.

Description

technical field [0001] The invention relates to a graphene anticorrosion coating and a preparation method thereof, belonging to the technical field of anticorrosion coatings. Background technique [0002] Graphene is a carbon atom with sp 2 The hexagonal honeycomb lattice planar film composed of hybrid orbitals is a two-dimensional material with a thickness of only one carbon atom. It is also the thinnest and hardest nanomaterial known in the world so far. It has a super high specific surface area and excellent It is expected to play an excellent role in the field of conductive coatings and metal anti-corrosion coatings due to its excellent electrical conductivity, ultra-high strength, toughness and shielding properties. [0003] Graphene is a loose nanomaterial with large surface energy, and it is easy to agglomerate in the resin matrix, which limits the application of graphene in coatings. At present, researchers often optimize the dispersion process or chemically modify...

AI Technical Summary

Problems solved by technology

Due to the improper selection of film-forming substances, the anti-corrosion performance of the coating prepared by this patent is poor, the adhesion is 0-1 grade, the flexibility is 1-2 grade, and the salt spray resistance time is only 600h

[0007] Patent CN 201610175323.3 mentions a preparation method of zinc-containing graphene anticorrosion primer based on graphene dispersion, but the mechanical properties and anticorrosion performance data of the primer are not given in the patent

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