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A kind of composite nano water-based UV coating and preparation method thereof

A water-based coating technology, applied in the field of coatings, can solve problems such as poor weather resistance, insufficient mechanical properties, and poor water resistance

Active Publication Date: 2016-05-25
武汉绿凯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This hyperbranched water-based UV coating combines the advantages of water-based UV coatings and hyperbranched coatings, but still has disadvantages such as poor water resistance, poor weather resistance, and insufficient mechanical properties.

Method used

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  • A kind of composite nano water-based UV coating and preparation method thereof
  • A kind of composite nano water-based UV coating and preparation method thereof
  • A kind of composite nano water-based UV coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Add 3.56g of hyperbranched glycidyl ether polyol (1st generation), 10.45g of toluene-2,4-diisocyanate and 0.0014g of dibutyltin dilaurate into a four-necked flask, react at 30°C for 5h; add 0.89g Dimethylolpropionic acid, 7.55g methyl hydroxy silicone oil (hydroxyl mass percentage 6%), react at 40°C for 6h; add 4.65g hydroxyethyl acrylate, react at 60°C for 8h; cool the product to 50°C, add 1.35g of triethylamine for neutralization, add 19g of deionized water for high-speed dispersion to obtain a silicone-modified hyperbranched water-based UV coating; add 0.48g of KH-570 modified nano-silica sol, and stir at 400rpm for 1h , to obtain a composite nano water-based UV coating.

Embodiment 2

[0044] Add 4g of hyperbranched glycidyl ether polyol (2nd generation), 13.34g of isophorone diisocyanate and 0.0087g of stannous octoate into a four-neck flask, react at 50°C for 3.5h; add 2.01g of dimethylol Propionic acid, 8.5g methyl hydroxy silicone oil (hydroxyl mass percentage: 6%), react at 60°C for 4.5h; add 3.48g hydroxyethyl acrylate, react at 75°C for 5.5h; cool the product to 40°C , add 2.28g triethylamine to neutralize, add 34g deionized water to disperse at a high speed to obtain a silicone-modified hyperbranched water-based UV coating; add 7.56gA-151 modified nano-silica sol, stir at 500rpm for 1h, and get Composite nano water-based UV coating.

Embodiment 3

[0046] Add 4.22g of hyperbranched glycidyl ether polyol (5th generation), 10.09g of hexamethylene diisocyanate and 0.0143g of dibutyltin dilaurate into a four-necked flask, react at 70°C for 2h; add 3.95g of dihydroxy Methylbutyric acid, 7.56g methylphenyl hydroxy silicone oil (hydroxyl mass percentage: 6%), reacted at 80°C for 3h; added 2.6g hydroxyethyl methacrylate, reacted at 90°C for 3h; the product Cool down to 40°C, add 5.4g of triethylamine for neutralization, add 51g of deionized water for high-speed dispersion to obtain a silicone-modified hyperbranched water-based UV coating; add 21g of KH-560 modified nano-silica sol, and stir at 600rpm After 0.5h, the composite nano water-based UV coating was obtained.

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Abstract

The present invention relates to a composite nanometer aqueous UV coating material and a preparation method thereof. The method comprises: (1) carrying out a reaction of a hyperbranched polyol, a catalyst and diisocyanate for 2-5 h at a temperature of 30-70 DEG C; (2) adding polyhydroxy carboxylic acid and organosilicon, and carrying out a reaction for 3-6 h at a temperature of 40-80 DEG C; (3) adding multi-functionality hydroxy acrylate, and carrying out a reaction for 3-8 h at a temperature of 60-90 DEG C; (4) cooling the product to achieve a temperature of less than 50 DEG C, adding triethylamine to neutralize, and adding deionized water to disperse to obtain a hyperbranched aqueous UV coating material; and (5) mixing the organosilicon-modified hyperbranched aqueous UV coating material and a silane coupling agent-modified nanometer silica sol to obtain the composite nanometer aqueous UV coating material. The coating material has characteristics of low viscosity, high light reaction activity, good flexibility, chemical resistance, low VOC content and the like, meets the green environmental protection idea, and can be applied in the fields of aqueous inks, aqueous adhesives, environmental protection coating materials and the like.

Description

technical field [0001] The invention relates to a composite nano water-based UV coating and a preparation method thereof, belonging to the technical field of coatings. Background technique [0002] In recent years, with the rapid development of industry, the problems of environmental pollution and ecological deterioration have become more and more noticeable, and people have realized the importance of protecting the ecological environment. UV curing technology is a new technology with high efficiency, energy saving and environmental protection. It has been widely used in the fields of coatings, inks, adhesives, printed circuit boards, information technology and biomedicine. UV-curable coatings do not contain or only contain a small amount of organic solvents, and have little environmental pollution. They are green and environmentally friendly materials. However, it has a high viscosity, and active diluent monomer must be added before use to adjust its viscosity and improve ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/67C09D175/16C09D7/12
Inventor 刘兴海杨耀易生平胡铭杰黄驰
Owner 武汉绿凯科技有限公司