Water-based one-coating UV-cured epoxy acrylate coating and preparation method thereof

Abstract

The invention belongs to the technical field of coatings, and discloses a water-based one-coating UV-cured epoxy acrylate coating and a preparation method thereof. The coating comprises the followingcomponents in percentage by mass: 25%-50% of epoxy acrylic resin, 10%-20% of a hydrophilic active monomer, 0.1%-3% of a water-based photoinitiator, 1%-7% of water-based silver paste, 1%-3% of water-based color paste, 0.5%-2% of a water-based additive and the balance of water, totaling 100%. By adopting a specific catalyst and a polymerization inhibitor, a paint film can be quickly cured at one time, and the cross-linking curing of the paint film is more sufficient; and a specific hydrophilic functional monomer is adopted, so that the stability of the water-based paint is further improved.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based one-coat UV curing epoxy acrylate coating and a preparation method thereof. Background technique [0002] At present, the vast majority of plastic paints are sprayed using the two-coat method or even the three-coat method of primer + topcoat. The primer meets the color system requirements, and the topcoat provides performance requirements. The main disadvantages of this traditional paint ratio and construction process are: 1. The paint is wasted a lot, and the statistics are not complete. Only about 20% of the paint is effectively retained on the coated workpiece in the traditional spraying method, and the rest is in the paint. Splashing outside the workpiece during the spraying process, even if it is the paint on the workpiece, most of the solvent evaporates in the end, leaving only about 20% of the effective part, causing great waste. 2. Since most of the paints...

AI Technical Summary

Problems solved by technology

The main disadvantages of this traditional paint ratio and construction process are: 1. The paint is wasted a lot, and the statistics are not complete. Only about 20% of the paint is effectively retained on the coated workpiece in the traditional spraying method, and the rest is in the paint. Splashing outside the workpiece during the spraying process, even if the paint on the workpiece, most of the solvent will evaporate in the end, leaving only about 20% of the effective part, causing great waste

2. Since most of the traditional spraying paints are organic solvents, the volatilization of solvents causes a large amount of volatile organic compounds (VOCs) emissions, causing serious pollution

5. The cured film is ultra-thin

[0004] Epoxy acrylate resin is a water-based UV curable resin widely used at present. The cured coating film has the advantages of high hardness, good gloss, corrosion resistance and good heat resistance, but epoxy acrylate resin has High viscosity, after UV curing, the paint film has the disadvantages of high hardness, poor flexibility, poor impact resistance, etc.

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