Preparation method for high-performance water-based environmentally-friendly anticorrosive paint used for metal base material

Abstract

A preparation method for high-performance water-based environmentally-friendly anticorrosive paint used for a metal base material comprises the step that a component A and a component B are blended with the ratio being 1: (0.3-1.2), and then the high-performance water-based environmentally-friendly anticorrosive paint can be prepared, wherein the component A comprises, by weight, 30-45 parts of waterborne epoxy curing agents, 10-15 parts of non-heavy-metal antirust paint, 11-28 parts of de-ionized water, 15-30 parts of packing, 2-7 parts of thickening agents, 0.3-1.3 parts of dispersing agents, 0.1-0.5 part of flatting agent, 0.1-0.4 part of de-foaming agent, 0.1-0.8 part of PH conditioning agent and 1-4 parts of film coalescing aid; the component B comprises, by weight, 85-95 parts of water-borne epoxy resin and 5-15 parts of mussel adhesive proteins. The mussel adhesive proteins in the paint are utilized to perform a strong coordination complexation effect with ions in the non-heavy-metal antirust paint, and the adhesive force of a coating to the metal base material is increased to 10 MPa; at the temperature of 25 DEG C, the water resistance reaches 1,400 h, the salt fog resistance reaches 2,000 h, and coated films do not foam or rust.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion coatings, in particular to a preparation method of a high-performance water-based environmental protection anti-corrosion coating for metal substrates. Background technique [0002] The harm of volatile organic compounds in solvent-based coatings to the environment and human body has attracted increasing attention. Compared with solvent-based coatings, water-based coatings have greatly reduced VOC emissions, which can effectively reduce the impact on the environment and help It is used to reduce the potential probability of occupational diseases, reduce fire risks and storage hazards, simplify and reduce the processes and costs of enterprise ventilation and water treatment. [0003] Water-based anti-corrosion coatings are very important members of water-based coatings, and are widely used in ship cabins, storage tanks, containers, bridges and building steel structures. Compared with solvent...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the current poor shielding performance of water-based coatings, the present invention provides a method for preparing a high-performance water-based environmentally friendly anti-corrosion coating for metal substrates. The method is prepared by adding mussel adhesion protein and non-heavy metals The high-performance water-based environmental protection anti-corrosion coating can form an irreversible dense hydrophobic organic metal complex with the surface of the metal substrate, which not only improves the adhesion between the coating film and the metal substrate, but also improves the compactness of the coating and improves the corrosion resistance of the coating. The anti-penetration performance of the medium greatly improves the protection performance

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