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UV silk-screen printing ink for baking varnish surface and preparation method of UV silk-screen printing ink

A technology of screen printing ink and baking varnish, which is applied in the field of preparation of UV optical fiber ink, can solve the problems of slow drying speed, slow curing speed, unstable adhesion, etc.

Active Publication Date: 2022-02-18
瑞通高分子科技(浙江)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]The screen printing ink used in the last process above has two curing methods: heat drying and UV drying. Among them, the screen printing ink supporting the heat drying method is a traditional solvent Type inks have high VOC content and slow curing speed, and in order to meet the national requirements on VOC emissions, the exhaust gas generated during the drying process needs to be purified by a purification device before being discharged; while UV screen printing inks using UV drying methods, most cities The products for sale are not really UV screen printing inks. The viscosity is adjusted by adding xylene organic solvents before use. In addition, this type of UV screen printing inks also has slow drying speed in winter, unstable adhesion, solvent resistance and water boiling resistance. Other performance can not meet the demand

Method used

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  • UV silk-screen printing ink for baking varnish surface and preparation method of UV silk-screen printing ink
  • UV silk-screen printing ink for baking varnish surface and preparation method of UV silk-screen printing ink
  • UV silk-screen printing ink for baking varnish surface and preparation method of UV silk-screen printing ink

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Experimental program
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preparation example Construction

[0050] The preparation technology of described acrylic resin, which comprises the following steps:

[0051] It is polymerized with acryloyl morpholine, pure acrylic resin and CAB under normal temperature and pressure. Pure acrylic resin is a thermoplastic solid resin with a molecular weight of 80,000-90,000, a Tg point of 50°C-60°C, and an acid value of 5-10. After heating a part of hydroxy acrylate monomer to 50°C-60°C, add solid pure acrylic resin, stir to dissolve completely, keep the temperature for 2-3 hours, then add another part of acrylate monomer and a small amount of CAB and stir evenly Then keep the temperature at 45°C-50°C for 3 hours.

[0052] The acrylate phosphate is one or more of PM1580 and GA2600A.

[0053] The acrylate monomers include cyclotrimethylolpropane formal acrylate (CTFA), 1,6 hexanediol diacrylate (HDDA), (3) ethoxylated trimethylolpropane triacrylate Two or more of (EO3-TMPTA), pentaerythritol triacrylate (PETA), neopentyl glycol diacrylate (N...

Embodiment 1

[0061] Embodiment 1 polyurethane acrylate A265

[0062] The synthesis of urethane acrylate A265 was carried out according to the data listed in the table.

[0063]

[0064]Add 305.7g of polyester polyol and 0.55g of dibutyltin dilaurate into a closed container, slowly add 90.9g of isophorone diisocyanate under nitrogen protection, and react at 70-75°C for 4-5h under temperature control. After cooling down to 60°C, add 64.1g hydroxyethyl acrylate and 0.45g hydroquinone, react at 60-65°C for 3-4h, when the measured NCO value is <0.2%, add 2.7g absolute ethanol to react 0.5 -1h to obtain an aliphatic polyester urethane acrylate. The synthetic product is a light yellow transparent liquid, the viscosity is 35000-45000mpa.s / 25°C, the strength is 22-28Mpa, the modulus is 600-700Mpa, and the elongation at break is 30-40%.

Embodiment 2

[0065] Embodiment 2 Acrylic resin A1

[0066]

[0067] Put 10 parts of HEA and 20 parts of HDDA into a container and heat it to 55-60°C, add 60 parts of NeoCryl B-302 at a speed of 400-500 rpm, and stir for 2-3 hours under temperature control to make it completely dissolve Add 5 parts of HEA and 5 parts of EastmanCAB551-0.01, control the temperature at 45-50°C, and stir for 3 hours. When the fineness is <1 and the acid value is <1mgKOH / g, acrylic resin A1 is obtained.

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Abstract

The invention relates to UV silk-screen printing ink for a baking varnish surface and a preparation method of the UV silk-screen printing ink, and provides a UV-curable silk-screen printing ink composition which comprises polyurethane acrylate, phosphate acrylate and acrylic resin, an acrylate monomer; a pigment; a photoinitiator; an auxiliary agent; a polymerization inhibitor; and wax powder, wherein the polyurethane acrylate is formed by polymerizing low-hydroxyl-value polyester polyol, isocyanate and a hydroxyl acrylate monomer, the acrylic resin is formed by polymerizing acryloyl morpholine, pure acrylic resin and CAB (cellulose acetate butyrate), and the alkyl acrylate phosphate is an active monomer with an adhesive force promoting effect and a water resistance improving effect. The UV screen printing ink added with 20%-40% of pure acrylate, 15%-30% of polyurethane acrylate and 3%-8% of phosphate acrylate has first-grade adhesive force, water boiling resistance and solvent resistance.

Description

technical field [0001] The invention belongs to the field of preparation of UV silk screen printing ink, in particular to a preparation method of UV optical fiber ink used on the surface of baking varnish. Background technique [0002] In the printing and iron industry, the production process of chemical barrel containers is usually to stamp cold-rolled steel, tinplate and other metal sheets into barrels, and then spray them with epoxy amino baking varnish for coloring, and bake them at 60-80°C for 15- After 30 minutes of drying, the ink is finally printed on the baking varnish coating with a 200-300 mesh screen. [0003] The screen printing ink used in the above last process currently has two curing methods: thermal drying and UV drying. Among them, the screen printing ink supporting the thermal drying method is a traditional solvent-based ink with high VOC content and slow curing speed. In order to achieve national For VOC emission requirements, the tail gas generated dur...

Claims

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Application Information

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IPC IPC(8): C09D11/101C09D11/03
CPCC09D11/101C09D11/03
Inventor 杨昊余宗萍杨鹏飞
Owner 瑞通高分子科技(浙江)有限公司