Water-based UV base oil and preparation method thereof

Abstract

The invention discloses water-base UV base oil, being prepared from the following components in weight percentage: 50 to 70 percent of waterborne acrylic emulsion, 0 to 30 percent of alkali soluble resin solution with 35 percent of mass percent concentration, 10 to 20 percent of water-base resin with active double bonds, 0 to 2 percent of coalescing agent, 0.1 to 0.5 percent of defoamer, 0.1 to 1.5 percent of leveling wetting agent, and 0 to 30 percent of deionized water. The invention also provides a preparation method of the water-based UV base oil, and mainly adopts a stepwise material addition method for preparation. The active double bonds in the water-based UV base oil obtained by adopting the preparation method, involves the free radical polymerization initiated by UV-light (ultraviolet light) in a UV surface oil light curing process, so that a riveting structure is formed between the base oil and the UV surface oil, the adhesive force of the UV surface oil on the base oil is enhanced, and then the adhesive force of UV light oil on printing paper is enhanced.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a water-based UV primer and a preparation method thereof. Background technique [0002] Due to its high gloss, good abrasion resistance and other good properties, and almost zero emission during use, UV varnish is the best choice among paper printing varnish products on the market. However, UV varnish itself has poor adhesion on printing ink, and a layer of primer is needed to improve interlayer adhesion. [0003] However, the current use of UV primer in China is very poor, resulting in interlayer adhesion will be affected by the depth of ink color and loose paper fibers when the paper is sprayed with ink, and the rate of defective products is high. In addition, the cost of UV printing varnish is relatively high, and a layer of high-priced primer must be applied before the top coat, which increases the cost of varnish. [0004] Patent CN101967323A discloses a prepar...

AI Technical Summary

Problems solved by technology

However, UV varnish itself has poor adhesion on printing inks, and a layer of primer is required to improve interlayer adhesion.

[0003] However, the current use of UV primer in China is very poor, resulting in interlayer adhesion will be affected by the depth of ink color and loose paper fibers when the paper is sprayed with ink, and the rate of defective products is high.

In addition, the cost of UV printing varnish is relatively high, and a layer of expensive primer must be applied before overcoating, which increases the cost of varnish

[0004] Patent CN101967323A discloses a preparation method of water-based UV base oil, and there is only physical interaction with UV top oil, that is, the use of intermolecular van der Waals force for attachment, non-reactive double bonds provide cross-linking, and the adhesion is not strong

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