Visible light curing coating and preparation method thereof
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A technology for curing coatings and visible light, applied in the direction of coatings, etc., can solve problems such as development and application in the initial stage
Inactive Publication Date: 2021-10-08
GUIZHOU MINZU UNIV
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[0005] While visible light-curable coating technology is gaining c...
Method used
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Embodiment 1
[0042] A: Take the mixture of pentaerythritol tetraacrylate, propylene glycol methyl ether acetate and higher alcohol fatty acid ester, add dye Alexa Fluor 488 to it under dark conditions, stir at 15°C for 3 hours, and the stirring speed is 300r / min, Obtain acrylate mixture;
[0043] B: Take 1,4-cyclohexanedimethanol divinyl ether compound, add 4-dimethylaminobenzoic acid ethyl ester and 2,4,6-tris(trichloromethyl)-1 , the mixture of 3,5-triazine was stirred at 15°C for 3h at a stirring speed of 300r / min to obtain a mixture of vinyl ethers;
[0044] C: At 15°C, irradiate the acrylate mixture in step A and the vinyl ether mixture in step B through LED for 10 minutes, the wavelength is 470nm, and the light intensity is 19.9μW / mm 2 , to obtain visible light-curable coatings.
[0045] Among them, in terms of parts by mass, there are 100 parts of pentaerythritol tetraacrylate and 1,4-cyclohexanedimethanol divinyl ether, 0.01 parts of Alexa Fluor 488, 0.5 parts of ethyl 4-dimethyl...
Embodiment 2
[0048] The specific preparation method refers to Example 1, wherein, in terms of parts by mass, it includes: a total of 100 parts of trimethylolpropane trimethacrylate and 1,4-dicyclohexane dimethyl divinyl ether, Alexa Fluor 532 A total of 0.01 parts, 1.5 parts of triethanolamine, and 1.5 parts of 2-[2-(furan-2-yl)vinyl]-4,6-bis(trichloromethyl)-1,3,5-triazine.
[0049] Wherein, the mass ratio of pentaerythritol tetraacrylate and 1,4-cyclohexanedimethanol divinyl ether compound is 1:1.
Embodiment 3
[0051] The specific preparation method refers to Example 1, wherein, by mass parts, it includes: 100 parts of Ebecryl 600 and 1,4-butanediol vinyl ether, 2 parts of Alexa Fluor 555, 3 parts of triisopropanolamine, 2, 3 parts of 4,6-tris(trichloromethyl)-1,3,5-triazine, 0.05 part of propylene glycol methyl ether acetate, and 0.05 part of propylene glycol methyl ether acetate.
[0052] Wherein, the mass ratio of pentaerythritol tetraacrylate to 1,4-cyclohexanedimethanol divinyl ether compound is 6:4.
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Abstract
The invention relates to a visible light curing coating and a preparation method thereof. The visible light curing coating comprises the following components in parts by weight: 100 parts of an acrylate compound and a vinyl ether compound, 0.01-2 parts of a fluorescent dye, 0.5-3 parts of a tertiary amine compound and 0.5-3 parts of a chlorotriazine photoinitiator, wherein a mass ratio of the acrylate compound to the vinyl ether compound is 4: 6 to 6: 4. According to the invention, the acrylate compound and the vinyl ether compound are used as a coating main body, and free radical polymerization reaction initiated by a ternary photo-initiation system consisting of the fluorescent dye, the tertiary amine compound and the chlorotriazine photoinitiator not only can overcome the oxygen inhibition phenomenon, but also has the advantages of low cost, no toxicity, rapidness and high efficiency, so the curing efficiency of acrylate and vinyl ether is greatly improved, and the coating with good quality can be obtained; and the coating has the advantages of being high in strength, good in adhesive force, good in thermal stability and the like, and the applicability of the coating is greatly improved.
Description
technical field [0001] The invention belongs to the field of coatings, and in particular relates to a visible light curing coating and a preparation method thereof. Background technique [0002] With the promotion of new environmental regulations, the advancement of eco-efficient molding processes and the research and development of zero-VOC products have become the development trend of the coatings industry. [0003] At present, the two major industrial fields of coatings and inks are ultraviolet (UV) curable resins, including UV flexo inks, screen printing inks, UV metallic paints, etc., among which UV curable coatings are widely used as one of the UV curable resins. Its research and application have also received a lot of attention. UV curing coatings first appeared in the 1960s. They were developed and marketed by Bayer, Germany, as the so-called "Fensjidal UV10" commodity. Subsequently, the US SUN Chemical Company and Immont Company also successively developed related ...
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