Anticorrosive coating as well as preparation method and application thereof

Abstract

The invention provides an anticorrosive coating. The anticorrosive coating is composed of a component A and a component B, wherein based on 100% of the total mass of the component A, the component A comprises the following components in percentage by mass: 40-60% of graphene modified magnesium powder, 20-40% of epoxy resin, 0.6-3% of a dispersing agent, 2-10% of a filler, 0.5-5% of an anti-settling agent and 5-20% of an organic solvent; and based on 100% of the total mass of the component B, the component B comprises the following components in percentage by mass: 50-70% of a curing agent, 20-40% of an organic solvent, 1-10% of a coupling agent and 0.5-5% of a curing accelerator. The anticorrosive coating provided by the invention has strong adhesion to a base material, is not easy to falloff from the surface of a base material, and plays a good role in protecting the base material; and the coating has good salt water resistance, water resistance, salt mist resistance and acid and alkali resistance, and achieves a good anti-corrosion effect.

Description

technical field [0001] The invention belongs to the technical field of coatings, and relates to an anti-corrosion coating and a preparation method and application thereof. Background technique [0002] Anti-corrosion coatings are an indispensable coating in paints and coatings. They are divided into conventional anti-corrosion coatings and heavy-duty anti-corrosion coatings. They can be used in construction, metal protection and other fields. They have good adhesion, aging resistance and anti-corrosion effects. With the development of my country's economy and the improvement of people's living standards, more attention is paid to the combination of safety, environmental protection and performance in the field of anti-corrosion coatings, and anti-corrosion coatings with excellent salt spray resistance, acid and alkali resistance, salt water resistance, water resistance and adhesion resistance are developed. It is the focus of research in this field. [0003] Aluminum alloy ha...

AI Technical Summary

Problems solved by technology

Although the invention prevents the corrosion of the base material by external harmful substances by adding graphene and improves the corrosion resistance of the base material, graphene is extremely easy to agglomerate and difficult to disperse, making the anti-corrosion coating prepared by the present invention thick and heavy, with high surface density. Difficult to apply to lightweight alloy anticorrosion

[0005] CN105086754A discloses a graphene epoxy zinc powder composite anti-corrosion coating, the anti-corrosion coating, in parts by mass, includes 15-20 parts of epoxy resin, 2-5 parts of mixed solvent, and 3-8 parts of pre-dispersed graphene slurry , 1 to 3 parts of anti-settling agent, 35 to 40 parts of zinc powder, 2 to 4 parts of talc powder, 14 to 16 parts of iron phosphorus powder, 8 to 12 parts of composite antirust powder, the invention further improves the utilization rate of graphene The anticorrosion property of coating has been improved, but in the preparation process of anticorrosion coating, because graphene is easy to gather, dispersibility is poor, causes the anticorrosion coating that this invention makes in resistance to salt spray, acid and alkali resistance, salt water resistance, water resistance and Adhesion and other aspects of performance are poor