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Double curing coating applied to substrates with difficulty in coating and preparation method thereof

A dual-curing and coating technology, used in polyurea/polyurethane coatings, coatings, etc., can solve the problems of low coating flexibility and difficult application of adhesion, and achieve the effect of strong adhesion and low VOC emissions

Inactive Publication Date: 2010-02-10
DONGGUAN JIAZHUOCHENG CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the flexibility of light-cured coatings will be relatively low, and the adhesion is difficult to apply to various substrates

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] Example 1 (unit: KG)

[0019] (1), trinity (2-hydroxyethyl) isocyanurate diacrylate 10;

[0020] (2), pentaerythritol triacrylate 15;

[0021] (3), hexamethylene diisocyanate 15;

[0022] (4), acrylic polyol 21;

[0023] (5), photoinitiator 7;

[0024] (6), ultraviolet absorber 0.2;

[0025] (7), hindered amine light stabilizer 2;

[0026] (8), leveling aid 0.2;

[0027] (9), methyl ethyl ketone 29.6.

example 2

[0028] Example 2 (unit: KG)

[0029] (1), Trinity (2-hydroxyethyl) isocyanurate diacrylate 11;

[0030] (2), pentaerythritol triacrylate 14;

[0031] (3), hexamethylene diisocyanate 16;

[0032] (4), acrylic polyol 20;

[0033] (5), photoinitiator 6;

[0034] (6), UV absorber 0.3;

[0035] (7), hindered amine light stabilizer 2.5;

[0036] (8), leveling aid 0.4;

[0037] (9), methyl ethyl ketone 29.8.

example 3

[0038] Example 3 (unit: KG)

[0039] (1), trinity (2-hydroxyethyl) isocyanurate diacrylate 12;

[0040] (2), pentaerythritol triacrylate 13;

[0041] (3), hexamethylene diisocyanate 17;

[0042] (4), acrylic polyol 22;

[0043] (5), photoinitiator 5;

[0044] (6), UV absorber 0.4;

[0045] (7), hindered amine light stabilizer 3;

[0046] (8), leveling aid 0.6;

[0047] (9), methyl ethyl ketone 27.

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PUM

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Abstract

The invention provides a double curing coating applied to substrates with difficulty in coating and a preparation method thereof. The double curing coating comprises 10-15 of tri(2-hydroxyethyl) isocyanurate diacrylate, 10-15 of pentaerythritol triacrylate, 15-20 of hexamethylene diisocyanate, 20-30 of acrylic polyol, 5-7 of photoinitiators, 0.2-0.5 of UV absorber, 2-3.5 of hindered amine light stabilizers, 0.2-1 of auxiliary flow agent and 20-30 of methyl ethyl ketone. The invention has the advantages of strong adhesion to various metals and composite materials and low VOC discharge.

Description

technical field [0001] The invention relates to a dual-cure coating applied to difficult-to-coat substrates, which is suitable for ferrous metals (iron, steel and their alloys), non-ferrous metals (aluminum, zinc, magnesium and their alloys), composite materials ( Coatings and preparation methods used on carbon fiber, glass fiber). Background technique [0002] In order to reduce air pollution caused by volatile solvents released during the coating process, it is generally required not to use organic solvents as much as possible. However, it is often difficult to obtain high-quality coatings without using organic solvents that greatly contribute to the fluidity and leveling of coatings. , high-gloss coatings, in addition to requiring a flawless surface appearance, these coatings also require good chemical resistance and ease of application. It is not feasible to use conventional heat-curing thermosetting acrylic resins for dual-cure coatings because the solvent must be remo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04
Inventor 黄杰良刘志辉
Owner DONGGUAN JIAZHUOCHENG CHEM TECH