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A kind of multi-component uv-led light curing screen ink for glass substrate and preparation method thereof

A UV-LED and glass substrate technology, applied in ink, applications, household appliances, etc., can solve the problems of incomplete curing of the printed pattern surface, low ink film cross-linking degree, poor solvent resistance of the ink film, etc., and achieve improvement Adhesion fastness, improving the degree of cross-linking and curing, excellent hydrolysis resistance and acid and alkali resistance

Active Publication Date: 2022-02-22
东莞德芳油墨科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, soft reactive oligomers and reactive diluents (mostly monofunctional reactive monomers) generally have a slow curing speed, and the crosslinking degree of the ink film after photocuring is not high, resulting in poor solvent resistance of the ink film; in addition, the presence of oxygen inhibition , the surface of the printed pattern is not fully cured, and it is more likely to be corroded by solvents

Method used

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  • A kind of multi-component uv-led light curing screen ink for glass substrate and preparation method thereof
  • A kind of multi-component uv-led light curing screen ink for glass substrate and preparation method thereof
  • A kind of multi-component uv-led light curing screen ink for glass substrate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0040] (1) Preparation of hyperbranched polyglycidol

[0041] The hyperbranched polyglycidol used in this example is commercially available, and can also be prepared through the following steps. The preparation raw materials, proportioning, reaction conditions and product number average molecular weight are as shown in Table 1:

[0042] Ventilate nitrogen, add trimethylolpropane and potassium methoxide dissolved in methanol successively in the reaction kettle, raise the temperature to 50-60°C to volatilize the methanol; then raise the temperature to reaction temperature A, slowly add glycidol dropwise in time B, drop After the addition, keep warm for 0.5-1 hour; cool down, dissolve the product with methanol, precipitate with acetone, and dry to obtain hyperbranched polyglycidol.

[0043] The number average molecular weight of the obtained hyperbranched polyglycidol was determined by gel permeation chromatography.

[0044] Table 1 prepares the raw material and proportioning of h...

Embodiment 1

[0053] This embodiment prepares the raw materials and proportioning ratio of A component in the black multi-component UV-LED photocurable screen ink as shown in Table 3:

[0054] Table 3 Raw materials and proportions of component A in black multi-component UV-LED photocurable screen ink

[0055]

[0056]

[0057] The preparation method of the black multi-component UV-LED photocurable screen ink of the present embodiment comprises the following steps:

[0058] S1. Mix itaconic acid modified hyperbranched polyglycidol, epoxy acrylate oligomer, isobornyl methacrylate and tetrahydrofuran acrylate;

[0059] S2. Add pigments, fillers and additives, and grind until the fineness is below 25 μm;

[0060] S3. Mix N,N-methylenebisacrylamide and trimethylolpropane, add a photoinitiator and stir to dissolve, then add it to the mixture in step S2, stir evenly, and obtain component A;

[0061] S4. Before printing, take 100 parts of component A obtained in step S3, add 5 parts of 3-me...

Embodiment 2

[0063] This example prepares the raw materials and proportioning ratio of A component in the white multi-component UV-LED photocurable screen ink as shown in Table 4:

[0064] Table 4 Raw materials and proportions of component A in white multi-component UV-LED photocurable screen ink

[0065]

[0066]

[0067] The preparation method of the white multi-component UV-LED photocurable screen ink of the present embodiment comprises the following steps:

[0068] S1. Mix itaconic acid-modified hyperbranched polyglycidol, epoxy acrylate oligomer, isobornyl acrylate, tetrahydrofuran methacrylate and acryloylmorpholine evenly;

[0069] S2. Add pigments, fillers and additives, and grind until the fineness is below 25 μm;

[0070] S3. Mixing tripropylene glycol diacrylate and propoxylated trimethylolpropane triacrylate, adding a photoinitiator and stirring to dissolve, then adding to the mixture in step S2, stirring evenly to obtain component A;

[0071] S4. Before printing, take ...

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Abstract

The invention provides a multi-component UV-LED light-curing screen ink for glass substrates and a preparation method thereof. The multi-component UV-LED light-curable screen ink includes component A, and the component A includes the following components in mass percentage: itaconic acid-modified hyperbranched polyglycidol 22% to 35%, epoxy acrylic acid 20% to 30% of ester oligomer, 18% to 28% of reactive diluent, 5% to 8% of photoinitiator, 8% to 28% of pigment and filler, and 1% to 3% of auxiliary. Before printing, take 100 parts by mass of component A, add 2-5 parts by mass of mercaptosiloxane and 3-6 parts by mass of isocyanate curing agent to obtain the multi-component UV-LED light-curable screen ink. The ink has fast curing speed, high hardness, good gloss, excellent adhesion on glass substrates after UV-LED light curing, and good water resistance, acid and alkali resistance and solvent resistance.

Description

technical field [0001] The invention relates to the technical field of screen ink, in particular to a multi-component UV-LED photocurable screen ink for glass substrates and a preparation method thereof. Background technique [0002] Traditional glass screen inks are mostly solvent-based inks, with a VOC content of up to 30%. During the construction and printing process, the volatilization of solvents may easily cause the collapse of printing dots and affect the accuracy of patterns; some glass screen inks use amino resin to increase ink film adhesion. , with the prolongation of baking curing time and the increase of temperature, the self-shrinkage reaction of amino resin will release harmful substances such as formaldehyde. UV-LED light curing ink adopts radiation curing technology, which has short curing time, energy saving and environmental protection, which is the development trend of glass screen ink. [0003] Due to the low surface energy of the glass substrate, the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C09D11/101C09D11/102C09D11/03
CPCC08G83/006C09D11/101C09D11/102C09D11/03
Inventor 郭介士王国安
Owner 东莞德芳油墨科技有限公司
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