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Light-cured polyurethane coating and preparation method thereof

A polyurethane coating and light-curing technology, which is applied in the coating and other directions, can solve the problems affecting the appearance quality and image of the metal plate, easy to wear and damage, and dull gloss

Inactive Publication Date: 2010-06-30
李岳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current coatings used for spraying metal surfaces have unsatisfactory spraying effects, and there are defects such as poor appearance quality, easy division, easy wear damage, dull luster, etc., thus affecting the appearance quality and appearance image of the metal plate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0006] Component A of polyurethane resin with photocurable isocyanurea ring: 369kg of dihydroxyethyl isocyanurate, 0.5kg of hydroquinone, 84kg of hexamethylene diisocyanate, 0.1kg of triethylamine; component B of photocurable polyurethane coating: A Compound 50kg, Neopentyl Glycol Diacrylate 50kg, Sgacuse 184 2kg.

[0007] The preparation method of polyurethane resin with light-cured isocyanurate ring is as follows: add 369 points of dihydroxyethyl isocyanurate and 0.5 kg of hydroquinone into a four-necked beaker equipped with a stirrer and a thermometer, heat to 60-70 degrees Celsius, Gradually add 84 kg of hexapressurized methyl diisocyanate. Then add 0.1 kg of triethylamine as a catalyst, and continue to react at 80 degrees Celsius for 10 hours to become a viscous compound with an isocyanate content of 0.05, called compound A.

[0008] The preparation method of the photocurable polyurethane coating is: mixing the above components to prepare the photocurable coating.

[00...

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PUM

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Abstract

The invention relates to a light-cured polyurethane coating and a preparation method thereof. The coating consists of two parts: light-cured isocyanuric ring polyurethane resin A and light-cured polyurethane coating B, wherein the light-cured isocyanuric ring polyurethane resin A comprises 369 parts of (2-hydroxyethyl) isocyanurate, 0.5 part of hydroquinone, 84 parts of hexamethylene diisocyanate and 0.1 part of triethylamine; and the light-cured polyurethane coating B comprises 50 parts of compound A, 50 parts of noepentyl glycol diacrylate and 2 parts of Sgacuse 184. The components are irradiated by energy rays (such as ultraviolet rays and ionizing radiation) and can be cured fast, and a coating film has good flexibility, high hardness and good processability, acid resistance, alkali resistance, solvent resistance and the like. The coating is coated with a bar material painting device or in the method of brushing, spraying and the like. The coating is coated on an ABS resin board by a No.5 bar material coating device and is irradiated by an 80W / cm medium-voltage mercury lamp for 3s, and then a high-hardness coating film is obtained. The coating is suitable for furniture made of plastics, optical instruments, stationery, auto parts, aircraft glass, various plastic or glass products with metal films, glass containers and the like.

Description

Technical field: [0001] The invention belongs to a coating and a preparation method thereof, in particular to a light-cured polyurethane coating and a preparation method thereof. Background technique: [0002] The current coatings used for spraying metal surfaces have unsatisfactory spraying effects, and have defects such as poor appearance quality, easy division, easy wear damage, dull luster, etc., thereby affecting the appearance quality and appearance image of the metal plate. Invention content: [0003] The object of the present invention is to overcome the shortcomings in the above-mentioned prior art, and provide a light-cured polyurethane coating that is easy to spray, has a good application effect, and has a bright surface after spraying. The technical scheme of the present invention is: divided into two parts: polyurethane resin A of photocurable isocyanurea ring and photocurable polyurethane coating B: component of polyurethane resin A of photocurable isocyanure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02
Inventor 李岳
Owner 李岳
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