Thin-coating heavy-duty anticorrosive coating and preparation method thereof

Abstract

The invention relates to the technical field of anticorrosive coatings, and in particular, relates to a thin-coating heavy-duty anticorrosive coating and a preparation method thereof. The thin-coatingheavy-duty anticorrosive coating comprises the following raw materials in parts by mass: composite resin, a dispersing agent, a defoaming agent, a thixotropic agent, glass flakes, modified graphene slurry, a special functional filler, a filler, a solvent and a composite curing agent. With adopting of the thin-coating type heavy-duty anticorrosive coating provided by the invention, the problems ofslow paint film drying time, long construction period, insufficient flexibility, coating layer failure such as easiness in cracking and peeling and like due to the high-film-thickness design of a conventional heavy-duty anticorrosive coating are solved, the coating is applied to long-acting heavy-duty corrosion prevention of steel structures and concrete engineering in a marine environment, improves the paint film defect of high-film-thickness design of the conventional heavy-duty anticorrosive coating, greatly reduces the construction cost and the construction progress, reduces the use amount of the coating and reduces the emission of volatile organic compounds. The production process is simple, the processing cost is low, and large-scale commercial production is easy.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion coatings, in particular to a thin coating type heavy-duty anti-corrosion coating and a preparation method thereof. Background technique [0002] Heavy-duty anti-corrosion coatings have been widely used in modern industry, energy, marine engineering and other departments. It is mainly reflected in heavy anti-corrosion fields such as offshore oil production platforms, offshore wind power, ports, bridges, and ships. Since heavy-duty anti-corrosion coatings are mainly used in facilities and equipment with harsh environments, long service periods and difficult maintenance, the designed film thickness of this type of coating is more than a few hundred microns, and some even reach 2000 μm. For example, JTS 153 "Durability Design Standards for Water Transport Engineering Structures" requires that the minimum paint film thickness for coating design with a 20-year anti-corrosion period in the tidal ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the high film thickness of the heavy-duty anti-corrosion coating mentioned in the above background technology, the drying time of the coating is slow and the flexibility is insufficient, resulting in high local stress of the substrate coating. Cracking and peeling lead to the failure of the coating. The invention provides a thin-coated heavy-duty anti-corrosion coating with a dry film thickness of 200-300 μm, which can achieve the performance effect of commercially available heavy-duty anti-corrosion coatings.

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