A kind of metal substrate graphene modified long-term anti-corrosion paint and preparation method thereof

Abstract

Belonging to the technical field of anticorrosive paint, the invention in particular relates to a metal substrate graphene modified long-acting anticorrosive paint and a preparation method thereof. The metal substrate graphene modified long-acting anticorrosive paint consists of a component A and a component B. The component A is composed of the following raw materials by weight: 40-50 parts of epoxy resin, 10-20 parts of modified graphene, 15-20 parts of pigment, 15-20 parts of a cosolvent, 0.3-0.8 part of a defoamer, 0.3-0.8 part of a leveling agent, 0.5-1 part of an anti-settling agent and0.5-1 part of a dispersant; the component B is composed of the following components by weight: 50-60 parts of etherified amino resin, 25-35 parts of phenolic aldehyde amine, and 20-30 parts of a cosolvent. The metal substrate graphene modified long-acting anticorrosive paint provided by the invention has the advantages of long-lasting and excellent anticorrosive performance, strong substrate adhesion, high mechanical strength, excellent friction resistance, excellent salt fog resistance, good water resistance, chemical resistance, oil resistance and impact resistance, strong construction adaptability, etc. The operation method is simple and is easy to operate, is low in raw material and energy consumption cost, and is environment-friendly and pollution-free, the coating film dries quickly,and the construction period is short.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion coatings, and in particular relates to a graphene-modified long-acting anti-corrosion coating for metal substrates and a preparation method thereof. Background technique [0002] Corrosion of metal is a phenomenon in which metal is destroyed by chemical or electrochemical action of environmental medium. The corrosion of metals spreads all over the national economy and brings huge losses to the national economy. In industrially developed countries, the direct economic loss caused by corrosion accounts for 1% to 4% of the total output value of the national economy, the annual corroded and rusted steel accounts for about 20% of the output, and about 30% of the equipment is scrapped due to corrosion. In China, the economic loss caused by metal corrosion is as high as 30 billion yuan per year, accounting for 4% of the gross national product. For a long time, people have used a variety of techn...

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Problems solved by technology

However, the current anti-corrosion coatings, because the main chain in the film-forming material is composed of C-C bonds, are prone to breakage of chemical bonds under the irradiation of ultraviolet light, thus losing the anti-corrosion function, resulting in a short anti-corrosion life; therefore, the development of long-term High-efficiency anti-corrosion coatings have become an important direction of current coatings research, the key is to prepare high-performance resins and high-performance long-term anti-corrosion additives

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