Preparation method for light-heat dual-cured woodware UV varnish coating

Abstract

The present invention provides a preparation method for a light-heat dual-cured woodware UV varnish coating. The method comprises: uniformly mixing an acrylic acid monomer, a catalyst and a polymerization inhibitor; adding the resulting mixture to epoxy resin with a temperature of 90-120 DEG C to carry out a reaction at a certain temperature; adopting acid value detecting to monitor the extent of the reaction, wherein the epoxy acrylate (EA) is obtained when the acid value is reduced to less than 5 mg/g; adding a thermal initiator, a photoinitiator, an antifoaming agent, a wetting and dispersing agent, a thickening agent and a leveling agents to the EA, then mixing and stirring to obtain the UV varnish coating. The prepared UV varnish coating through the method provided by the present invention has the dual functions of light curing and heat curing, the surface dry can be rapidly achieved in 4-8 seconds under the light intensity of 250-400 mJ/cm<2>, the film forming and the curing can be achieved in 1-5 hours at the temperature of 50-70 DEG C. In addition, the prepared UV varnish coating has characteristics of high adhesion, good chemical corrosion resistance, high film hardness and low cost, and provides more excellent construction performance, curing method and film performance than ordinary UV-cured coatings.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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AI Technical Summary

Benefits of technology

This patented technology allows for better flexibility when creating protective layers such as paints due to their ability to absorb sunlight without losing effectiveness during long periods of exposure compared to traditional methods like solvent borne polyester (SB) based primers. Additionally, this new material offers improved durability against environmental factors including water vapor, ozone, acid rain, snow, ice impact, abrasives, sand particles, dirt, polishing agents, cleanliness issues, and other challenges associated with conventional photocurable materials. Overall, these technical features improve protection properties while reducing costs.

Problems solved by technology

The technical problem addressed in this patented text relates to improving the properties of painted surfaces made with conventional oily materials like acrylics due to their low volatile components (volatilization) during manufacturing processes. This limits the ability to convert them into durability when exposed to sunlight without losing effectiveness over longer periods of storage.

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