Modified industrial anti-corrosion aqueous alkyd coating and preparation method of same

Abstract

The invention provides a modified industrial anti-corrosion aqueous alkyd coating and a preparation method of same. The alkyd coating includes, by weight, 35-45 parts of aqueous alkyd resin, 15-25 parts of aqueous acrylic resin, 0.2-0.4 parts of a drier, 3-5 parts of a cosolvent, 30-45 parts of pigment filler, 5-10 parts of an antirust pigment, 0.1-0.5 parts of an anti-settling agent, 0.5-1 part of a dispersant, 0.05-0.1 parts of a defoamer, 0.1-0.5 parts of a flatting agent, 0.3-1 part of an anti-flash-rust agent and 15-20 parts of water. The modified industrial anti-corrosion aqueous alkyd coating is high in solid content and low in volatile organic compounds (VOCs), is low in environment pollution, has good adhesion force, is excellent in recoatability, and has good chemical product resistance, water resistance and salt fog resistance. In the invention, through specially designed epoxy-ester resin and selection of the weather resistant pigment and antirust pigment, a paint film, formed by the coating, has excellent comprehensive performances, such as fullness, adhesion force, salt fog resistance and chemical product resistance; especially, the salt fog resistance of the coating is greatly higher than that of epoxy-ester resin in the prior art.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to a modified water-based alkyd industrial anticorrosion coating and a preparation method thereof. Background technique [0002] Anti-corrosion coatings, generally divided into conventional anti-corrosion coatings and heavy-duty anti-corrosion coatings, are an indispensable coating in paint coatings. Conventional anti-corrosion coatings play an anti-corrosion effect on metals under normal conditions and protect the service life of non-ferrous metals; A type of anti-corrosion coating that achieves a longer protection period than conventional anti-corrosion coatings. [0003] At present, oil-based alkyd paints are usually the most commonly used anti-corrosion coatings in my country. Now it is the general trend to make water-based paints with water-based alkyd resins. The advantages of this kind of coatings are simple construction and good decoration. They are mainly used on the surface of ste...

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Problems solved by technology

[0003] At present, oil-based alkyd paints are usually the most commonly used anti-corrosion coatings in my country. Now it is the general trend to make water-based paints with water-based alkyd resins. The advantages of this kind of coatings are simple construction and good decoration. They are mainly used on the surface of steel structures and auto parts. Coating and protection requirements; however, its paint film dries slowly, has poor weather resistance, and poor matching performance. If it is not modified, it will largely limit its wide use

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