Cold-spraying-zinc anticorrosive paint with graphene and method for preparing cold-spraying-zinc anticorrosive paint

Abstract

The invention relates to cold-spraying-zinc anticorrosive paint with graphene and a method for preparing the cold-spraying-zinc anticorrosive paint. The cold-spraying-zinc anticorrosive paint comprises, by weight, 75-85 parts of zinc powder, 2-3 parts of organic resin, 15-25 parts of solvents, 0.1-2 parts of the graphene, 0.1-1 part of dispersing agents and 0.1-1 part of anti-settling agents. The method for preparing the cold-spraying-zinc anticorrosive paint includes weighing raw materials according to the weight, mixing the graphene, the dispersing agents and a part of the solvents with one another and ultrasonically uniformly dispersing the graphene, the dispersing agents and the solvents; mixing the organic resin with the residual solvents for dissolving; adding dispersed graphene liquid into dissolved resin liquid, and uniformly dispersing at a high speed to obtain mixed liquid; adding the zinc powder and the anti-settling agents into the mixed liquid, and uniformly dispersing at a high speed to obtain the cold-spraying-zinc anticorrosive paint with the graphene. The cold-spraying-zinc anticorrosive paint and the method have the advantages that coatings are good in adhesion and impact resistance and excellent in anticorrosive performance; the cold-spraying-zinc anticorrosive paint comprises single components and is convenient to construct; the cold-spraying-zinc anticorrosive paint is excellent in antistatic property and applicable to the antistatic coatings.

Description

technical field [0001] The invention relates to a coating and a preparation method thereof, in particular to a graphene cold-coated zinc anticorrosion coating and a preparation method thereof. Background technique [0002] Cold-applied zinc anti-corrosion coatings, also known as coating galvanizing, zinc-based coating, etc., are a special single-component zinc-rich coating. The content of zinc powder in the cold-coated zinc dry film is as high as 96%, which not only provides good cathodic protection for steel in the heavy-duty corrosion environment, but also the special resin and zinc oxide salt in the cold-coated zinc can provide barrier protection for the coating Therefore, it has excellent anti-corrosion properties. However, due to the high zinc powder content and low resin content in the dry film of cold-coated zinc paint, the existing cold-coated zinc products have the following deficiencies: 1. Low adhesion between the cold-coated zinc coating and steel: in the existi...

AI Technical Summary

Problems solved by technology

However, due to the high zinc powder content and low resin content in the dry film of cold-coated zinc paint, the existing cold-coated zinc products have the following deficiencies: 1. Low adhesion between the cold-coated zinc coating and steel: in the existing cold-coated zinc products Among them, the high adhesion can reach 5.0MPa, and the low one is only 1.0~1.5MPa. The requirements for zinc-rich primer in HG / T3668-2009Z are inorganic type ≥ 3.0MPa; organic type ≥ 6.0MPa

②The coating has poor flexibility and the impact resistance index cannot meet the requirements

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