Ultraviolet cured coating and application thereof

A technology of curing coatings and ultraviolet light, which is applied in the direction of polyester coatings, polyether coatings, epoxy resin coatings, etc., and can solve problems such as large temperature differences, large differences in thermal expansion and contraction performance, and complex processes.

Inactive Publication Date: 2010-09-22
惠州市嘉淇涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN1486795 discloses a three-layer decorative and protective coating consisting of a powder coating, an acrylic resin coloring layer and a UV-curable topcoat. The process is relatively complicated and the processing cost is high; Layer UV curing protective coating and Chinese patent CN101376790 introduce a primer coating composed of hydroxyl-containing saturated polyester resin, amino resin and epoxy resin, all of which belong to a protective coating. The proces

Method used

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  • Ultraviolet cured coating and application thereof
  • Ultraviolet cured coating and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The percentage by weight of hard primer: Dipropylene glycol diacrylate (DPGDA) 8%, isobornyl acrylate (IBOA) 6%, polyurethane acrylate UV-3000B (Nippon Synthetic) 35%, epoxy acrylate 621-100 (Changxing Chemical) 15%, alumina powder 6%, antioxidant 1%, leveling agent 1%, dispersant 1%, adhesion promoter 1%, photoinitiator 2%, mixed solvent 24%.

[0032] The percentage by weight of the transparent colored intermediate coating is: dipropylene glycol diacrylate (DPGDA) 6%, 6-hexanediol diacrylate (HDDA) 3%, polyurethane acrylate 6176 (Changxing Chemical Industry) 25%, epoxy acrylate 621-100 (Changxing Chemical) 20%, transparent pigment 3%, leveling agent 1%, dispersant 1%, defoamer 1%, photoinitiator 2%, mixed solvent 38%.

[0033] The weight percentage of high-gloss surface coating is: 3,3,5-trimethylcyclohexyl acrylate (TMCHA) 2%, neopentyl glycol diacrylate (NPGDA) 3%, epoxy acrylate 621-100 (Changxing Chemical Industry) 13%, dipentaerythritol hexaacrylate (DPHA) 15%, u...

Embodiment 2

[0036] The percentage by weight of the hard primer: dipropylene glycol diacrylate (DPGDA) 6%, isodecyl acrylate (ISODA) 6%, polyurethane acrylate UV-3000B (Nippon Synthetic) 30%, epoxy acrylate CN117 (sand Dorma) 20%, alumina powder 6%, antioxidant 1%, leveling agent 1%, dispersant 1%, adhesion promoter 1%, photoinitiator 2%, mixed solvent 26%.

[0037] The percentage by weight of the transparent colored intermediate coating is: dipropylene glycol diacrylate (DPGDA) 4%, 6-hexanediol diacrylate (HDDA) 5%, polyurethane acrylate 6148T-85 (Changxing Chemical Industry) 30%, epoxy Acrylate 621-100 (Changxing Chemical) 15%, transparent pigment 3%, leveling agent 1%, dispersant 1%, defoamer 1%, photoinitiator 2%, mixed solvent 38%.

[0038] The weight percentage of high-gloss surface coating is: neopentyl glycol diacrylate (NPGDA) 5%, epoxy acrylate 621-100 (Changxing Chemical Industry) 11%, dipentaerythritol hexaacrylate (DPHA) 13%, polyurethane acrylate U400 ( BAYER company) 28%, p...

Embodiment 3

[0041] The percentage by weight of the hard primer: ethoxylated bisphenol A diacrylate (BPA4EODA) 7%, 3,3,5-trimethylcyclohexyl acrylate (TMCHA) 4%, polyurethane acrylate UV-3200B (Japanese synthetic ) 38%, epoxy acrylate 6210G (Changxing Chemical) 12%, alumina powder 8%, antioxidant 1%, leveling agent 1%, dispersant 1%, adhesion promoter 1%, photoinitiator 2% , mixed solvent 25%.

[0042] The percentage by weight of the transparent colored intermediate coating is: neopentyl glycol diacrylate (NPGDA) 5%, 6-hexanediol diacrylate (HDDA) 4%, polyurethane acrylate 6176 (Changxing Chemical Industry) 28%, epoxy Acrylate 3082 (COGNIS company) 25%, transparent pigment 4%, leveling agent 1%, dispersant 1%, defoamer 1%, photoinitiator 2%, mixed solvent 29%.

[0043] The weight percentage of high-gloss surface coating is: 3,3,5-trimethylcyclohexyl acrylate (TMCHA) 4%, 6-hexanediol diacrylate (HDDA) 2%, epoxy acrylate 3082 (COGNIS company) 15 %, dipentaerythritol hexaacrylate (DPHA) 12%...

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PUM

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Abstract

The invention belongs to the technical field of coating compositions and solves the problems of decreased adhesion of the coating to the magnesium alloy surface and easy ageing and cracking of the coating in the prior art. An ultraviolet cured coating comprises the following components in percentage by weight: a hardened first coat comprising 6 to 18 percent of low-functionality monomer, 30 to 51 percent of low-functionality prepolymer, 5 to 8 percent of alumina powder; 0.5 to 1.5 percent of antioxidant, less than 3 percent of auxiliary agent, 1 to 3 percent of photoinitiator and 18 to 35 percent of mixed solvent, an intermediate coat comprising 3 to 15 percent of low-functionality monomer, 35 to 57 percent of low-functionality prepolymer, 0.5 to 6 percent of transparent pigment, 1 to 4 percent of auxiliary agent, 1 to 3 percent of photoinitiator and 23 to 45 percent of mixed solvent, and a high-gloss cover coat comprising 1 to 8 percent of low-functionality monomer, 8 to 15 percent of low-functionality prepolymer, 10 to 22 percent of high-functionality monomer, 36 to 45 percent of high-functionality prepolymer, 1 to 4 percent of auxiliary agent, 3 to 5 percent of photoinitiator and 20 to 40 percent of mixed solvent.

Description

technical field [0001] The invention belongs to the technical field of coating compositions. Background technique [0002] As we all know, magnesium alloy is one of the lightest engineering metal materials. It has many advantages such as high specific strength and specific stiffness. It is the metal material with the most development potential in this century. It is widely used in aerospace, automobile manufacturing, electronic communication and other fields. However, the loose, porous, and easily oxidized surface of magnesium alloy materials also greatly restricts the application of this type of alloy material. Therefore, people have worked hard and done a lot of research work. The protection method is reported, and the organic coating protection technology is an effective method. Chinese patent CN1486795 discloses a three-layer decorative and protective coating consisting of a powder coating, an acrylic resin coloring layer and a UV-curable topcoat. The process is relativ...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B27/18C23C14/16C23C14/58B05D1/36B05D7/14C09D163/10C09D167/06C09D175/14C09D171/00
Inventor 胡德勇胡燕捷王绍松胡德平
Owner 惠州市嘉淇涂料有限公司
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