Low-surface-energy ultraviolet mixed curing coating for metal surface

A low surface energy, metal surface technology, applied in the direction of antifouling/underwater coatings, coatings, paints containing biocide, etc., can solve the problems of poor applicability, uneven local curing, etc., and achieve excellent overall performance of the coating , Improved physical and chemical properties, excellent performance

Inactive Publication Date: 2015-09-16
SHENZHEN POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among these hybrid curing systems, the UV-thermal hybrid curing system is easy to control the curing process and has excellent performance in practical applications, and has a good application prospect. The curing process of other dual curing systems is greatly affected by external factors, and the applicability is not strong.
[0005] In various UV hybrid curing systems, most researchers use the mixture of several resins with different curing groups, so the hybrid system also has problems such as local uneven curing.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Components and mass percentages of coating of the present invention are as follows:

[0063] Amino silicone oil modified bisphenol A epoxy acrylate monoester 45;

[0064] Glycidyl acrylate 8;

[0065] Hydroxyethyl acrylate 5;

[0066] Pentaerythritol triacrylate 5;

[0067] Dipropylene glycol diacrylate 12;

[0068] Titanium dioxide 6;

[0069] calcium carbonate 3;

[0070] Chrome Yellow 6;

[0071] 2-Hydroxy-2-methyl-1-phenyl-1-propanone 2;

[0072] 1-Chloro-4-propoxythioxanthone 1;

[0073] Diethylaminopropylamine 3;

[0074] EFKA4050 2.5;

[0075] EFKA3886 1;

[0076] EFKA2022 0.5.

[0077] First, add amino silicone oil modified bisphenol A epoxy acrylate monoester, glycidyl acrylate, hydroxyethyl acrylate, pentaerythritol triacrylate, and dipropylene glycol diacrylate into the mixing tank according to the above ratio, and stir at room temperature and high speed , then add titanium dioxide, calcium carbonate, chrome yellow, EFKA4050, disperse evenly, add ...

Embodiment 2

[0080] Components and mass percentages of coating of the present invention are as follows:

[0081] Amino silicone oil modified polyol toughened epoxy acrylate monoester 50;

[0082] Butyl acrylate 5;

[0083] Trimethylolpropane triacrylate 6;

[0084] Neopentyl glycol diacrylate 12;

[0085] Titanium dioxide 7;

[0086] Barium sulfate 3;

[0087] Iron Blue 7;

[0088] 2-Hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenone 2;

[0089] 2,4-Diethylthioxanthone 1;

[0090] Triethylenetetramine 3;

[0091] CFC510 2;

[0092] EFKA3883 1;

[0093] BYK0521.

[0094] The preparation method of coating is the same as embodiment 1.

[0095] The coating can be applied by brushing, spraying, roller coating, etc. After being cured by ultraviolet light and heat mixing, the adhesion (cross-cut method) of the coating of the present invention is tested to be grade 1, the hardness (swing bar hardness) is 0.82, and the wear resistance (750g / 50r) 0.013g, dry heat resistance (90±2℃) grad...

Embodiment 3

[0097] Components and mass percentages of coating of the present invention are as follows:

[0098]Aminosilane modified fatty acid toughened epoxy acrylate monoester 40;

[0099] Hydroxypropyl acrylate 6;

[0100] Propoxylated Glyceryl Triacrylate 10;

[0101] Propoxylated neopentyl glycol diacrylate 16;

[0102] Titanium dioxide 7;

[0103] Talc powder 2;

[0104] Chrome Green 8;

[0105] 1-Hydroxycyclohexylphenyl ketone 1;

[0106] 2,4,6-Trimethylbenzophenone 2;

[0107] Dicyandiamide 3;

[0108] CFC637 2.5;

[0109] EFKA3600 1.5;

[0110] EFKA20401.

[0111] The preparation method of coating is the same as embodiment 1.

[0112] The coating can be applied by brushing, spraying, roller coating, etc. After being cured by ultraviolet light and heat mixing, the adhesion (cross-cut method) of the coating of the present invention is tested to be grade 1, the hardness (swing bar hardness) is 0.79, and the wear resistance (750g / 50r) 0.018g, dry heat resistance (90±2℃) ...

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Abstract

The invention provides a low-surface-energy ultraviolet mixed curing coating for a metal base material. The coating comprises amino silicon oil or amino silane modified epoxy monoacrylate, an ultraviolet initiator-heat curing agent mixed curing agent, a reactive diluent, pigment, a filler, a dispersing agent, an antifoaming agent and a leveling agent. The coating provided by the invention has the following beneficial effects: the coating composition provides preliminary bonding force through ultraviolet fast curing, and post-curing is realized under the effect of heat, thereby relieving the problem of high curing shrinkage of single ultraviolet curing; and after the curing, the coating has relatively strong adhesive force with the metal base material, the surface energy of the coating is relatively low, and thus, the coating has good anti-staining property.

Description

technical field [0001] The invention relates to the technical field of photocuring coatings, in particular to coatings cured by mixing and curing low surface energy ultraviolet light on metal surfaces. Background technique [0002] Traditional solvent-based coatings have serious environmental pollution due to their large organic volatile components. With the increasing awareness of environmental protection and energy conservation, countries around the world have formulated corresponding regulations to limit the emission of volatile organic compounds (VOC) in coatings. , the development of new coatings to replace traditional solvent-based coatings has become an important development direction of coatings. Although water-based coatings can effectively reduce the emission of organic compounds (VOC), their film-forming time is long, the overall performance of coatings is poor, and the price of water-based resins is also relatively expensive, which affects their popularization an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/08C09D4/02C09D4/06C09D7/12C09D5/16
Inventor 刘红波林峰徐玲
Owner SHENZHEN POLYTECHNIC
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