Waterborne epoxy anti-corrosive coating and preparation method thereof

Abstract

The invention discloses a waterborne epoxy anti-corrosive coating and a preparation method thereof. The coating comprises a component A and component B, wherein the component A comprises high titanium ash, feldspar powder, silicon carbide, ceramic fine powder, a nanometer silicon dioxide solution, zinc phosphate, water and the like; and the component B is a waterborne epoxy curing agent. The preparation method comprises the following steps of: adding a waterborne epoxy resin and a waterborne dispersing agent into a reaction kettle, starting a dispersing machine, adding the high titanium ash, feldspar powder, silicon carbide, ceramic powder, nanometer silicon dioxide solution, zinc phosphate and water in sequence, and dispersing; treating with a sand grinding machine; and adding auxiliary materials such as a waterborne antifoaming agent, a waterborne flatting agent and the like, and stirring to obtain a bottom and top-combined thick film waterborne epoxy anti-corrosive coating. The coating provided by the invention is corrosion resistant and wear resistant after one-time molding, the coating requirement of the inner wall of a steel structure bridge steel box girder is met, and the coating technical requirements of a plurality of severely-corrosive indoor steel structure platforms are met.

Description

technical field [0001] The invention relates to a heavy-duty anti-corrosion coating and a preparation method thereof, in particular to a two-component bottom-surface-in-one thick-film water-based epoxy anti-corrosion 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. Heavy-duty anti-corrosion coatings are generally used in emerging marine engineering such as offshore facilities, coastal and bay structures, modern transportation such as highway guardrails, bridges and other fields, large industrial enterprises such as f...

AI Technical Summary

Problems solved by technology

[0007] At present, the existing water-based epoxy coatings, including commercially available water-based epoxy coatings, are safe and environmentally friendly, but they cannot simultaneously achieve the construction, physical and chemical properties of solvent-based epoxy coatings, such as a film formation of 75-150 μm and wear resistance of 750g. / 500R is less than 0.050g, resistant to salt spray for 3000 hours, no blistering and no rust

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