Waterborne rust conversion primer coating with rust and preparation method thereof

Abstract

The invention provides waterborne rust conversion primer coating with rust and a preparation method thereof. The waterborne rust conversion primer coating with the rust is prepared by uniformly mixinga component A and a component B, wherein the component A is prepared from the following raw material components in parts by weight: 2 to 10 parts of a rust conversion agent, 2 to 5 parts of a rust conversion auxiliary agent, 5 to 8 parts of a stabilizer, 0.5 to 3 parts of a corrosion inhibitor, 2 to 4 parts of a film forming auxiliary agent, 0.1 to 0.3 part of a thickener, 0.3 to 0.6 part of a wetting dispersant, 0.2 to 0.5 part of a de-foaming agent, 0.05 to 0.2 part of fungicide, 30 to 50 parts of waterborne epoxy antirust emulsion and 15 to 25 parts of de-ionized water; the component B isan epoxy curing agent. Therefore, the primer coating has the characteristics of environment friendliness, good adhesive power, acid resistance, alkali resistance, salt spray corrosion resistance and long service life, can be coated with the rust and is convenient to construct.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based rust-carrying-rust-turning-rust primer coating and a preparation method thereof. Background technique [0002] The rust-removing paint is a heavy-duty anti-corrosion paint that can be directly painted on the surface of steel with certain residual rust. become part of the paint film. Rust-reversing paint simplifies the surface treatment procedure before traditional paint coating, greatly reduces the cost of painting and the harm to the environment and construction personnel, and its anti-rust performance is also better than conventional anti-corrosion coatings. Rust-to-rust coatings and their matching intermediate coatings have become the focus and focus of research on heavy-duty anti-corrosion coatings. [0003] In the invention patent of application number CN201310538722.8, a new type of rust-removing coating with rust is introduced, which prepares a synthetic r...

AI Technical Summary

Problems solved by technology

[0003] In the invention patent of application number CN201310538722.8, a new type of rust-removing coating with rust is introduced, which prepares a synthetic resin emulsion by free-radical copolymerization of complexing monomers, high-efficiency barrier monomers and bonding monomers, and then synthesizes the synthetic resin Emulsion made of paint, which can protect the metal surface, strong adhesion, and generate a new stable protective layer, and save cost and construction time, less environmental pollution, weather aging resistance, light aging resistance and chemical corrosion resistance However, it is difficult to cover the rust layer with active harmful impurities and large thickness, and it is easy to rust.

In the invention patent of application number CN201410151441.1, a weather-resistant and rust-resistant coating is introduced. It has the characteristics of low environmental pollution, weather aging resistance, light aging resistance and chemical corrosion resistance. However, the rust-reducing agent is mainly composed of phosphoric acid. Phosphoric acid is a strong acid, which may further corrode the iron under the rust layer after dissolving the rust on the steel surface; in addition, the discharge of phosphoric acid-containing products is also worthy of attention, because if phosphoric acid is discharged into water, it will cause eutrophication and cause severe environmental pollution

In the invention patent of application number CN201410125837.9, a solvent-free epoxy anti-rust paint that can be painted with rust is introduced. Its component A is composed of epoxy resin, active diluent, anti-rust pigments and fillers, fillers and additives. Composition, has the characteristics of improving the adhesion between the coating and the rusted steel substrate, the method is simple, suitable for industrial production, and can be popularized and applied to other heavy-duty anti-corrosion parts. Therefore, it takes a long time for the chelated rust layer to achieve the stability of the rust layer, and at the same time, the rapid drying of the coating film has certain restrictions on the function of the active pigment.

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