A kind of low-density anticorrosion coating for aluminum alloy based on graphene and preparation method thereof

Abstract

The invention belongs to the technical field of coating materials and particularly relates to a graphene-based low-density anticorrosive coating material for aluminum alloy and a preparation method ofthe graphene-based low-density anticorrosive coating material. The graphene-based low-density anticorrosive coating material for the aluminum alloy is prepared from a component A and a component B, wherein the component A is prepared from the following ingredients in parts by weight: 40-60 parts of epoxy resin, 5-15 parts of graphene slurry, 10-20 parts of pigments, 5-10 parts of fillers, 0.5-1.5parts of leveling agent, 0.5-1 part of dispersant and 10-20 parts of diluent. The coating material prepared by the method is low in surface density and has relatively good corrosion resistance whilebeing lightweight. Compared with the existing coating materials, the coating material prepared by the method has the characteristics of good mechanical properties, good flexibility, good adhesive power, good water resistance, good gasoline resistance, good salt-mist resistance, light weight and low surface density, is beneficial to the weight reduction of coating equipment and has huge potential applications and extensive application prospects in the field of aviation.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a graphene-based low-density anticorrosion coating for aluminum alloys and a preparation method thereof. Background technique [0002] Aluminum alloy has low density, light weight, good corrosion resistance, high specific strength, excellent mechanical properties, and easy processing and forming, so that aluminum alloy products are widely used, such as in aviation, aerospace, automobiles and other fields. [0003] However, metal structural materials such as aluminum alloys are often corroded due to the action of environmental media, resulting in reduced strength or failure of the material, shortened service life of the equipment, and even caused huge damage and loss in severe cases. Coating a layer of protective anti-corrosion paint on the surface of aluminum alloy is the simplest and most effective protection measure. In order to achieve a good anti-corrosion effec...

AI Technical Summary

Problems solved by technology

However, the unique shortcomings of graphene, which are easy to agglomerate and difficult to disperse, limit its application. At present, the anti-corrosion coatings prepared by using graphene powder are thick and have high surface density, which cannot meet the application of lightweight coatings in the field of aluminum alloys.

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