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Hydrophilic ultraviolet light curing coating and preparation method thereof

A technology of curing coatings and ultraviolet light, applied in epoxy resin coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of increased energy consumption, the hydrophilicity does not meet practical requirements, and the hydrophilic angle is small.

Active Publication Date: 2013-11-27
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] So far, the hydrophilicity of hydrophilic coatings, no matter whether it is single-layer coating or double-layer coating, cannot meet the practical requirements, that is, the hydrophilic angle is small and the hydrophilicity is not good.
In addition, the hydrophilic coatings in the prior art are all thermosetting baking varnishes, which need to be baked at a high temperature of 220-240°C, which greatly increases energy consumption

Method used

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  • Hydrophilic ultraviolet light curing coating and preparation method thereof
  • Hydrophilic ultraviolet light curing coating and preparation method thereof
  • Hydrophilic ultraviolet light curing coating and preparation method thereof

Examples

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preparation example Construction

[0077] The preparation method of waterborne epoxy acrylic resin is as follows:

[0078] Add 3 mol of epoxy resin, 1.5 mol of acrylic acid, 0.0003 mol of hydroquinone and 0.0002 mol of triethylamine into a three-neck flask equipped with a stirrer and a thermometer, raise the temperature to 90°C, and react for 2 hours. Cool down to 50°C, then add 1.5mol aminopropyltriethoxysiloxane, react for 1.5h; add 1.5mol maleic anhydride, 0.0004mol hydroquinone and 0.0002mol triethylamine, Raise the temperature to 95°C at a speed of 1 / min, and react for 2 hours; cool down to 45°C, add 1.5 mol of triethylamine, and continue stirring for 1 hour; the product is obtained.

[0079] The preparation method of waterborne polyurethane acrylate resin is as follows:

[0080] Remove water from 1 moL polybutylene adipate diol (molecular weight: 1000-3000) at 110°C for 1 hour under reduced pressure, then cool down to 80°C, and add 100mL butanone and 0.5moL dimethylol under nitrogen protection Propionic...

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Abstract

The invention provides a hydrophilic ultraviolet light curing coating. The hydrophilic ultraviolet light curing coating is characterized by comprising a prime coat A and a top coat B, wherein the prime coat A comprises the following components in part by weight: 25 to 35 parts of waterborne epoxy acrylate, 1.5 to 2.5 parts of cosolvent, 0.8 to 2.0 parts of photoinitiator, 0.5 to 2 parts of defoamer, and 0.5 to 2.5 parts of flatting agent; the top coat B comprises the following components in part by weight: 20 to 38 parts of waterborne polyurethane acrylate, 0.2 to 0.8 part of wetting accelerator, 1.0 to 2.5 parts of photoinitiator, 2 to 5 parts of cosolvent, 0.5 to 1.5 parts of defoamer, 0.5 to 2.5 parts of flatting agent, and 1.2 to 3.5 parts of coupling agent. The provided hydrophilic ultraviolet light curing coating has a small hydrophilic angle.

Description

technical field [0001] The invention relates to the field of paint preparation, in particular to a hydrophilic ultraviolet light curing paint and a preparation method thereof. Background technique [0002] Hydrophilic coating is a coating that can improve the hydrophilicity of the substrate. As an important functional coating, it can change the hydrophilicity of the substrate. It has attracted widespread attention in recent years. It has been used in air-conditioning radiator aluminum fins It has been widely used in the fields of chips and medical devices. In the field of air-conditioning aluminum fins, when the air conditioner is cooling, the water vapor in the baking paint condenses and adheres to the surface of the fins, forming a "water bridge" between the fins, which increases the ventilation resistance and reduces the working efficiency of the heat exchanger. Energy consumption increases, and the heat exchange rate of the radiator can be improved after the surface of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/10C09D175/16C09D4/02B05D5/04B05D7/24
Inventor 张红明李冬威李季王献红王佛松
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI