A kind of preparation method of high-functionality aqueous uv resin composition of 100% solid content

Abstract

The invention discloses a high-functionality water-based UV resin composition with 100% solid content and a preparation method thereof. The UV resin composition of the invention has the following components and weight percent: 60% of high-functional water-based polyurethane acrylate ~85%, hydrophilic acrylate diluent or prepolymer 10%~35%, photoinitiator 1%~10%; the appearance of the composition is a translucent white liquid, which is used for water-based UV-cured wood paint, Wood floor paint and ink, the composition has 100% solid content, does not need to be dried before curing, and has high production efficiency; it can be diluted with water or alcohol to adjust the viscosity, which is environmentally friendly and non-toxic; it has excellent comprehensive properties such as light curing rate, adhesion and flexibility. Significant economic and social benefits.

Description

technical field [0001] The invention relates to a preparation method of a high-functionality water-based UV resin composition with 100% solid content. Background technique [0002] Traditional solvent-based coatings have large emissions of VOC (volatile organic compounds), which pose a huge threat to human health and environmental protection. With the emphasis on environmental protection and the improvement of human living standards around the world, people are more willing to use environmentally friendly paints that are non-toxic to human health during the production, transportation and consumption of paints. [0003] As a new type of environmentally friendly coating, water-based UV coatings can combine the advantages of water-based coatings and UV coatings, and can be used in many fields such as wood coatings, wood floor coatings, inks, etc., and the application prospects are very broad. However, the current water-based UV resins still have the following deficiencies: (1)...

AI Technical Summary

Problems solved by technology

However, the current water-based UV resins still have the following deficiencies: (1) At present, the research and preparation of water-based UV resins mainly include polyurethane acrylate, polyester acrylate and epoxy acrylate. Resins are usually terminated with monofunctional hydroxy acrylate, and the system forms linear molecules after curing. The crosslinking density, adhesion and mechanical properties are not ideal, so there is still a big gap between its comprehensive performance and solvent-based coatings. , the scope of application and the application field are small; (2) Most of the water-based UV coatings on the market are water emulsions or water dispersions, and the solid content is relatively low (usually about 40%), so the process of coating preparation and use is relatively complicated , For example, in the process of resin preparation, water emulsification or dispersion needs to be controlled to reduce viscosity and maintain stability, and before light curing, it takes a long time to dry the water, which is not conducive to the requirements of flow operation and mass production, and the production efficiency is low (3) The low solid content of water-based UV coatings also puts forward higher requirements for production equipment or construction methods. If specific hot air or infrared drying equipment is required, the production cost is high, and the coating method is not suitable for roller coating, etc.

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