LED-UV printing ink and preparation method and using method thereof

Abstract

The invention discloses LED-UV printing ink. The printing ink is prepared from hexa-functional aliphatic polyurethane acrylate, difunctional epoxy resin, polyester resin, an active monomer, an adherence promoter, a photoinitiator and other auxiliaries, wherein the active monomer is a mixture prepared from 1,6-hexanediol diacrylate, propoxylated trimethylolpropane triacrylate and neopentyl glycol diethoxyl diacrylate according to the mass ratio of (2-4.5):1:(2-3.5). The printing ink capable of utilizing an LED light source as a curing light source can form a cured film layer after being cured for 10-20 s under the LED light source, the technological process is the same as that of common UV printing ink, no new equipment needs to be additionally arranged, energy consumption of the curing process of the printing ink is less than 10% of that of the traditional curing process completed under an ultraviolet lamp, carbon dioxide emitted in the technological process is greatly reduced, and both the economical efficiency and the environmental protection property are achieved.

Description

technical field [0001] The invention relates to a UV coating, in particular to a UV coating suitable for curing by an LED light source, a preparation method and a use method thereof. Background technique [0002] Photocurable ink is also called UV curable ink, which refers to the ink that uses ultraviolet light of different wavelengths and energies to polymerize the monomers in the ink binder into polymers under ultraviolet radiation, thereby drying the ink to form a film. With the rapid development of modern industry, the formula of light-curable ink is also constantly updated in line with market demand, which makes the ink film more beautiful and more resistant to environmental corrosion. Matching with the continuous improvement of the performance of light-curable inks, the energy required for the curing process of light-curable inks is also getting higher and higher. At present, some products on the market have a curing energy as high as 1100J / cm2. The requirements for t...

AI Technical Summary

Problems solved by technology

Matching with the continuous improvement of the performance of light-curable inks, the energy required for the curing process of light-curable inks is also getting higher and higher. At present, some products on the market have a curing energy as high as 1100J / cm2. The requirements for the power of ultraviolet light used in the process are getting higher and higher. In addition to ultraviolet light, ordinary ultraviolet light also generates infrared energy, which leads to very high energy consumption in the curing process.

On the other hand, part of the light intensity and energy consumption in the photocuring process will increase the temperature of the processed workpiece. Taking photocured glass ink as an example, the surface temperature often rises above 60°C during the curing process. When the processed workpiece is relatively For soft materials, such as plastic materials and film materials, the increase in temperature will cause deformation of the workpiece and affect the performance of the processed workpiece

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