Organic silicon-modified water-based UV (ultraviolet) coating and preparation method thereof

Abstract

The invention relates to an organic silicon-modified water-based UV (ultraviolet) coating and a preparation method thereof, and belongs to the technical field of environment-friendly coatings. The organic silicon-modified water-based UV coating comprises the following components in percentage by mass: 30 to 55 percent of organic silicon-modified hyperbranched water-based urethane acrylate, 20 to 50 percent of filler, 1 to 10 percent of photoinitiator, 0 to 3 percent of auxiliaries and 5 to 30 percent of water. The preparation method comprises the following steps: fully grinding the organic silicon-modified hyperbranched water-based urethane acrylate, the filler and water in a proportion, performing dispersion for 1 to 2 hours at 40 to 50 DEG C at a rotating speed of 400 to 600rpm, adding the photoinitiator and the auxiliaries, and uniformly stirring and standing a mixture to obtain the water-based UV coating. The coating is environment-friendly, nontoxic, high in curing speed, stability, aging resistance, solvent resistance, adhesive power and abrasion resistance and suitable for a plurality of coating modes and production requirements, and can be widely applied to the surfaces of automobiles, electronic products, ships, furniture and packaging printing materials.

Description

[0001] technical field

[0002] The invention relates to an organosilicon-modified water-based UV coating and a preparation method thereof, belonging to the technical field of environmental protection coatings. Background technique

[0003] Traditional solvent-based coatings are mainly composed of fillers, binders, organic solvents and additives. VOC (volatile organic compound) emissions are large, causing serious environmental pollution, which poses a huge threat to air quality, packaging contents and human health. Water-based coatings use water as a solvent instead of organic solvents, which significantly reduces VOC emissions, prevents air pollution, does not affect human health, and has good overall performance. It is widely used in industries such as automobiles, electronics, furniture, and packaging and printing. UV curable coatings mainly include prepolymers, photoinitiators, pigments, reactive diluents and additives. Because of their fast curing rate, low environment...