Thin-coating type solvent-free coating for mechanical engineering equipment and preparation method of thin-coating type solvent-free coating

Abstract

The invention provides a thin-coating solvent-free paint for mechanical engineering equipment, which comprises a component A and a component B. The component A is composed of the following raw materials in parts by weight: 3040 parts of polyaspartic acid ester resin, 1.01.5 parts of wetting dispersant, 1020 parts of pigment, 1520 parts of precipitated barium sulfate, 1520 parts of silica powder, 0.81.2 parts of anti-settling assistant, 0.20.5 part of defoamer and 0.20.5 part of leveling agent.Wherein the component A comprises the following components in parts by weight: 10-15 parts of polyether polyol, 25 parts of a silane coupling agent and 0.20.5 part of a water repellent agent, and the component B comprises the following components in parts by weight: 95 parts of hexamethylene diisocyanate tripolymer and 5 parts of 3-isocyanate propyl trimethoxy silane, wherein the mass ratio of the component A to the component B is 4: 1. The coating meets a heating and high-pressure mixed airless spraying construction mode, a thin-coating type solvent-free coating with the film thickness capable of being controlled to be 100-150 microns can be formed through one-time spraying, and the coating has excellent thin-coating property, long-acting property, protective property, decorative property and the like.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a thin coating solvent-free coating for mechanical engineering equipment, and at the same time, the invention also relates to a preparation method of the coating. Background technique [0002] Solvent-free coatings are non-toxic and pollution-free, simple and quick construction methods, green and environmentally friendly, and have superior anti-corrosion performance. Solvent-free coatings do not contain volatile solvents, which can reduce air pollution caused by solvent volatilization, reduce the emission of organic volatiles, and play an inestimable role in personal protection, fire protection, explosion protection, etc. In addition, the possibility of explosion in the project is greatly reduced, thereby enhancing the safety of the paint construction process. It has also been widely recognized by the market. But its disadvantage is that it cannot achieve thin coating, and it c...

AI Technical Summary

Problems solved by technology

However, its disadvantage is that it cannot achieve thin coating, and it cannot be promoted and applied in various fields.

[0003] In view of the problem that the film thickness of the existing solvent-free coatings is too thick, the thin coating of solvent-free coatings will be the general trend

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