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Water-based polyurethane color paint

A water-based polyurethane and color paint technology, applied in the field of coatings, can solve the problems of heavy pollution, high VOC emissions, high energy consumption, etc., and achieve the effects of good corrosion resistance, low irritation, and low VOC

Inactive Publication Date: 2019-06-28
惠州市双信达实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The coatings applied to the surface of plastic products are plastic coatings, which are widely used in electrical casings, automotive plastic products, toys and other fields. At present, domestic plastic coatings are mainly organic solvent-based coatings, and their production produces heavy pollution. High energy consumption, high VOC emissions during spraying application, unfriendly to the human body and the environment, and when applied to large plastic workpieces, the plastic on the surface of the plastic workpiece will often be bitten by organic solvents. Based on this, it is necessary to A low-irritant, low-VOC environmentally friendly plastic coating to replace

Method used

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  • Water-based polyurethane color paint
  • Water-based polyurethane color paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The base paint comprises the following components by weight: 50g of water-based polyurethane resin, 2g of water-based thickener, 0.3g of water-based defoamer, 0.7g of water-based wetting agent, 0.8g of water-based leveling agent, 4g of film-forming aid , water-based color paste 29g, deionized water 15g;

[0029] The consumption of described curing agent is 25.45g;

[0030] The consumption of described thinner is 30.56g;

[0031] Add base paint and curing agent to the dispersing kettle to disperse evenly at a speed of 400 rpm, then slowly add diluent to continue dispersing, adjust the viscosity of the mixture in the dispersing kettle to 25-30S / 2# cup spray viscosity, and obtain water-based polyurethane For color paint, use water-based polyurethane color paint to spray several test samples. After spraying, place the workpiece in a flash dryer and bake at a temperature of 75°C for one hour, then take out the test sample and cool it to room temperature. Performance tests ...

Embodiment 2

[0035] The base paint comprises the following components by weight: 46g of water-based polyurethane resin, 2g of water-based thickener, 0.2g of water-based defoamer, 0.6g of water-based wetting agent, 0.7g of water-based leveling agent, 4g of film-forming aid , water-based color paste 25g, deionized water 15g;

[0036] The consumption of described curing agent is 23.375g;

[0037] The consumption of described thinner is 25.245g;

[0038] Add base paint and curing agent to the dispersing kettle to disperse evenly at a speed of 400 rpm, then slowly add diluent to continue dispersing, adjust the viscosity of the mixture in the dispersing kettle to 25-30S / 2# cup spray viscosity, and obtain water-based polyurethane For color paint, use water-based polyurethane color paint to spray several test samples. After spraying, place the workpiece in a flash dryer and bake at a temperature of 75°C for one hour, then take out the test sample and cool it to room temperature. Performance test...

Embodiment 3

[0041] The base paint comprises the following components by weight: 52g of water-based polyurethane resin, 2g of water-based thickener, 0.4g of water-based defoamer, 0.8g of water-based wetting agent, 0.8g of water-based leveling agent, and 4g of film-forming aid , water-based color paste 31g, deionized water 18g;

[0042] The consumption of described curing agent is 27.25g;

[0043] The consumption of described thinner is 34.88g;

[0044] Add base paint and curing agent to the dispersing kettle to disperse evenly at a speed of 400 rpm, then slowly add diluent to continue dispersing, adjust the viscosity of the mixture in the dispersing kettle to 25-30S / 2# cup spray viscosity, and obtain water-based polyurethane For color paint, use water-based polyurethane color paint to spray several test samples. After spraying, place the workpiece in a flash dryer and bake at a temperature of 75°C for one hour, then take out the test sample and cool it to room temperature. Performance te...

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Abstract

The invention discloses water-based polyurethane color paint. The paint comprises basic paint which is prepared from the following components in parts by weight: 40-55 parts of water-based polyurethane resin, 1-3 parts of a water-based thickening agent, 0.2-0.5 part of a water-based defoaming agent, 0.5-1 part of water-based wetting agent, 0.5-1 part of a water-based flatting agent, 3-5 parts of acoalescing agent, 25-35 parts of water-based color paste and 8-20 parts of deionized water, a curing agent which is hexamethylene diisocyanate-based hydrophilic aliphatic polyisocyanate, and a diluting agent which is deionized water. The water-based polyurethane color paint only contains a small amount of volatile organic compounds, has low VOC, no remarkable odor, small irritation for human bodies and small environmental pollution, can be well painted and adhered to the surface of a plastic workpiece, does not contain organic solvent, and does not corrode the plastic layer; and the paint layer formed by the color paint has the characteristics of abrasion resistance and corrosion resistance.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to a water-based polyurethane color paint. Background technique [0002] The coatings applied to the surface of plastic products are plastic coatings, which are widely used in electrical casings, automotive plastic products, toys and other fields. At present, domestic plastic coatings are mainly organic solvent-based coatings, and their production produces heavy pollution. High energy consumption, high VOC emissions during spraying application, unfriendly to the human body and the environment, and when applied to large plastic workpieces, the plastic on the surface of the plastic workpiece will often be bitten by organic solvents. Based on this, it is necessary to A low-irritant, low-VOC environment-friendly plastic paint to replace. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a water-based polyurethane paint ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/20C09D5/08
Inventor 邓卫东
Owner 惠州市双信达实业有限公司
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