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Multi-component UV-LED light-cured silk screen ink for glass substrate, and preparation method thereof

A light-curing, multi-component technology, applied in inks, applications, household appliances, etc., can solve the problems of slow curing speed, easy to be corroded by solvents, and poor solvent resistance of ink films, so as to improve water boiling resistance and avoid water vapor intrusion , Improve the effect of adhesion fastness

Active Publication Date: 2020-09-01
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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  • Multi-component UV-LED light-cured silk screen ink for glass substrate, and preparation method thereof
  • Multi-component UV-LED light-cured silk screen ink for glass substrate, and preparation method thereof
  • Multi-component UV-LED light-cured silk screen ink for glass substrate, and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0039] (1) Preparation of hyperbranched polyglycidol

[0040] The hyperbranched polyglycidol used in this example is commercially available or can be prepared by the following steps. The preparation raw materials, proportions, reaction conditions and product number average molecular weight are shown in Table 1:

[0041] Blow nitrogen, add trimethylolpropane and potassium methoxide dissolved in methanol successively into the reaction kettle, heat up to 50~60°C to volatilize methanol; then heat up to reaction temperature A, slowly add glycidol dropwise within time B After the addition, keep for 0.5-1h; cool down, dissolve the product with methanol, precipitate with acetone, and dry to obtain hyperbranched polyglycidol.

[0042] The number average molecular weight of the obtained hyperbranched polyglycidol was measured by gel permeation chromatography.

[0043] Table 1 Raw materials and proportions for preparing hyperbranched polyglycidol

[0044]

[0045] (2) Preparation of itaconic acid...

Embodiment 1

[0052] Table 3 shows the raw materials and formulations of component A in the preparation of black multi-component UV-LED light-curing screen ink in this embodiment:

[0053] Table 3 The raw materials and ratio of A component in black multi-component UV-LED light-curing screen ink

[0054]

[0055]

[0056] The preparation method of the black multi-component UV-LED light-curing screen ink of this embodiment includes the following steps:

[0057] S1. Mix itaconic acid modified hyperbranched polyglycidol, epoxy acrylate oligomer, isobornyl methacrylate and tetrahydrofuran acrylate;

[0058] S2. Add pigments, fillers and additives, and grind to a fineness of 25μm or less;

[0059] S3. Mix N,N-methylenebisacrylamide and trimethylolpropane, add the photoinitiator and stir to dissolve, then add it to the mixture in step S2, stir evenly to obtain component A;

[0060] S4. Before printing, take 100 parts of component A obtained in step S3, add 5 parts of 3-mercaptopropyltrimethoxysilane and 3 pa...

Embodiment 2

[0062] In this embodiment, the raw materials and proportions of component A in the preparation of white multi-component UV-LED light-cured screen ink are shown in Table 4:

[0063] Table 4 Raw materials and ratio of A component in white multi-component UV-LED light-curing screen ink

[0064]

[0065]

[0066] The preparation method of the white multi-component UV-LED light-curing screen ink of this embodiment includes the following steps:

[0067] S1. Mix itaconic acid modified hyperbranched polyglycidol, epoxy acrylate oligomer, isobornyl acrylate, tetrahydrofuran methacrylate and acryloylmorpholine;

[0068] S2. Add pigments, fillers and additives, and grind to a fineness of 25μm or less;

[0069] S3. Mix the tripropylene glycol diacrylate and propoxylated trimethylolpropane triacrylate, add the photoinitiator and stir to dissolve, and then add it to the mixture in step S2, stir evenly to obtain component A;

[0070] S4. Before printing, take 100 parts of component A obtained in step S...

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Abstract

The invention provides a multi-component UV-LED light-cured silk screen ink for a glass substrate, and a preparation method thereof. The multi-component UV-LED light-cured silk screen ink comprises acomponent A, the component A comprises, by mass, 22-35% of itaconic acid modified hyperbranched polyglycerol, 20-30% of an epoxy acrylate oligomer, 18-28% of a reactive diluent, 5-8% of a photoinitiator, 8-28% of a pigment filler and 1-3% of an assistant. Before printing, 100 parts by mass of the component A substance are taken, and 2-5 parts by mass of mercaptosiloxane and 3-6 parts by mass of anisocyanate curing agent are added to obtain the multi-component UV-LED light-cured screen ink. The ink is high in curing speed, high in hardness and good in glossiness, has excellent adhesive force after being subjected to UV-LED light curing on the glass substrate, and is good in boiling resistance, acid and alkali resistance and solvent resistance.

Description

Technical field [0001] The invention relates to the technical field of screen inks, in particular to a multi-component UV-LED light-cured 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 construction and printing, the volatilization of solvents can easily cause the printing dots to collapse and affect the accuracy of the pattern; some glass screen inks use amino resins to increase ink film adhesion , With the extension of baking curing time and the increase of temperature, the self-condensation 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] Because the surface energy of the glass substrate is low, the surface is smo...

Claims

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Application Information

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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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