Dual-curing coating and preparation method thereof

A dual-curing, coating technology, applied in the direction of coating, can solve the problems of difficult to meet the performance requirements of thick coating, high wear resistance and high temperature resistance, chemical corrosion resistance coating film, difficult application of non-ferrous system, limited shape of cured object, etc. , to achieve the effect of small curing shrinkage, fast curing and good comprehensive performance of the coating film

Inactive Publication Date: 2011-09-14
SHANGHAI HONGDUN ANTI COUNTERFEIT MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The curing system also has some disadvantages, mainly including limited curing depth, difficult application in colored systems, inability to cure shadow parts, and restrictions on the shape of cured objects, etc.
These shortcomings limit the application of light curing in some aspects
However, the solvent-based coatings that still dominate the market currently have fewer restrictions on curing conditions, but it is difficult to meet the performance requirements of thick coatings, high wear resistance, high temperature resistance, and chemical corrosion resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take 1.50Kg of hydroxymethyl acrylate with a solid content of 45%, add it to container A containing 3.30Kg butyl acetate, 0.18Kg defoamer YCK-645 and 0.12Kg leveling agent YCK-1060, and stir it at a high speed Under the condition, add 0.50Kg diphenylmethane diisocyanate. In another container B, add 0.20Kg1,6-hexanediol diacrylate, 0.37Kg propoxylated neopentyl glycol diacrylate, 0.13Kg pentaerythritol tetraacrylate, 5.30Kg aliphatic urethane acrylate, 2.80Kg bis Phenol A epoxy acrylate, 4.90Kg polyester acrylate, 0.40Kg 2-hydroxy-2-methyl-1-phenyl-1-propanone and 0.20Kg 1-hydroxy-cyclohexyl-phenyl ketone, after stirring Pour the mixture into container A, continue to stir evenly, and then filter through a 150-mesh sieve to obtain a dual-curing coating. The paint is coated on the PET film by roller coating, the wet coating amount is 8g / m2, and then baked in an oven at 110°C for 3s, and then the rainbow laser effect is made by laser holographic molding, and at the same ti...

Embodiment 2

[0029] Take 0.24Kg of dinonyl sulfonic acid and 0.14Kg of phthalocyanine dye, and add them to container A containing 1.60Kg of acetone, 2.00Kg of n-butanol and 0.20Kg of leveling agent EFKA-3239, and then add 1.56Kg of alcohol in turn after they are completely dissolved. Acid resin and 0.48Kg methylated melamine resin, stir evenly. In another container B, add 0.45Kg trihydroxymethylpropane triacrylate, 0.37Kg propoxylated glycerin triacrylate, 0.34Kg pentaerythritol triacrylate, 0.42Kg1,6-hexanediol diacrylate, 5.73Kg aromatic Polyurethane acrylate, 4.32Kg bisphenol A epoxy acrylate, 1.15Kg hyperbranched polyester acrylate, 0.70Kg 2-methyl-1-[4-methylthiophenyl]-2-morpholinyl-1 -Acetone and 0.30Kg2,4,6-(trimethylbenzoyl)diphenylphosphine oxide, after stirring evenly, pour the mixture into container A, and continue stirring evenly to obtain a dual-curing coating. The paint is painted on ceramic products by brushing, baked in an oven at 110°C for 5 seconds, and then cured with ...

Embodiment 3

[0031] In container A containing 1.50Kg xylene, 1.80Kg butyl acetate and 0.10Kg defoamer YCK-1060, add 2.02Kg hydroxyacrylate, 1.16Kg polyester acrylate, 0.82Kg polytrialkoxysilane , 0.09Kg zinc octanoate and 0.31Kg methyl etherified melamine resin, stir at a high speed to make it dissolve evenly. In another container B, add 2.00Kg propoxylated neopentyl glycol diacrylate, 6.32Kg aliphatic urethane acrylate, 2.68Kg novolac epoxy acrylate and 1.20Kg 2,4,6-(trimethylbenzyl Acyl)diphenylphosphine oxide, after stirring evenly, pour the mixture into container A, continue to stir evenly, and filter through a 150-mesh screen to obtain a dual-curing coating. The paint is painted on the surface of metal products by brushing, and then cured with a 2000w ultraviolet lamp 3cm away from the metal surface, and finally baked in an oven at 150°C for 30s to obtain a chemical-resistant, good adhesion , Scrub-resistant protective coating, similarly can make laser marks on the metal surface.

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PUM

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Abstract

The invention discloses a dual-curing coating. The coating contains ultraviolet curing resin monomers, a low polymer, a photo-initiator, polymer resins, an adjuvant and an organic solvent. In the invention, the dual-curing coating is prepared by synergistic copolymerization of an ultraviolet curing coating system and a solvent-based polymer system. The preparation method of the coating comprises the following steps: firstly thermocuring, and then processing information layers and photocuring at the same time; or firstly photocuring, then processing the information layers, and finally heating with an oven or infrared-heating for further cross-linking curing. Therefore, the dual-curing coating has better comprehensive performances such as fast curing speed, small film-coating cure shrinkage and high crosslinking density so as to achieve the characteristics of chemical corrosion resistance, strong wear resistance, strong high temperature resistance, excellent flexibitity, excellent adhesive force and the like; and the coating can be used for laser anti-counterfeit marks of plastics, cosmetic preparations, ceramic materials, glass, paper, leather, wooden products and metal products as well as production of pigment preparations and the like.

Description

technical field [0001] The invention relates to a dual curing coating and a preparation method thereof. Background technique [0002] UV curing technology is an energy-saving and environment-friendly new technology. It has short curing time, reduces environmental pollution, and provides high-gloss, high-hardness, and high-wear-resistant coatings. It is a truly environmentally friendly coating. However, because UV coatings are affected by visible curing (the place where ultraviolet light can be irradiated can be cured), it has become one of the main reasons why the global market is less than 5% (only 2% in China). The curing system also has some disadvantages, mainly including limited curing depth, difficult application in colored systems, inability to cure shadow parts, and restrictions on the shape of cured objects. These disadvantages limit the application of light curing in some aspects. However, the solvent-based coatings that still dominate the market currently have f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02
Inventor 黄斗兴彭继荣
Owner SHANGHAI HONGDUN ANTI COUNTERFEIT MATERIAL
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