Weather-resistant ultraviolet curing solvent-free spraying open transparent primer and preparation method thereof

Abstract

The invention belongs to the technical field of coatings, and relates to a weather-resistant ultraviolet curing solvent-free spraying open transparent primer. The weather-resistant ultraviolet curing solvent-free spraying open transparent primer comprises the following components in percentage by mass: 10-30% of urethane acrylate resin, 10-20% of polyester acrylic resin, 0.1-0.3% of an antifoaming agent, 0.2-1% of a wetting dispersant, 0.1-1% of a leveling agent, 0.1-0.5% of a base material wetting agent, 2-5% of a first photoinitiator, 2-5% of a second photoinitiator, 0.1-0.5% of a thixotropic agent, 0.1-1% of fumed silica, 5-20% of talcum powder, and 40-60% of a UV reactive diluent. The UV primer is safe, environmentally friendly, low in VOC content, good in construction performance, capable of being recycled and excellent in paint film performance.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a weather-resistant UV-curable solvent-free spray-coating open transparent primer and a preparation method thereof. Background technique [0002] Solvent-based coatings are gradually being eliminated due to poor environmental protection performance and long construction period. UV paint has become one of the preferred materials for furniture coating. Most of the UV paints used in furniture painting are mainly open paints. The conventional coating process is 1-2 coats of PU open transparent primer + PU open transparent topcoat. First, the mixed oil of PU open paint contains only 10- 20%, and the rest is solvent, which is extremely harmful to the environment; second, because PU polyurethane paint has a short activation period, it cannot be recycled and reused, and its construction utilization rate is only 40-60%; third: the weather resistance of PU polyurethane paint ...

AI Technical Summary

Problems solved by technology

[0004] In recent years, the reciprocating spraying process has emerged in the market. The utilization rate of this equipment is high (up to 95%), and it is the first choice for the mechanized production of furniture factories. However, most of the furniture is painted with PU polyurethane paint, containing Solvents or UV paints containing a small amount (15% or more) of solvents are not up to environmental protection standards. Therefore, it is necessary to provide a solvent-free UV paint that is safe, environmentally friendly and has a high utilization rate

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