CN-118745299-B - High-wear-resistance matte UV ink for printing and preparation method thereof

Abstract

Compared with the prior art, the printing ink provided by the application has excellent printing adaptability, is fine and stable, is not easy to agglomerate, is uniform and quick in drying, is quick and efficient in printing, has strong adhesiveness and is tough and wear-resistant, the printing thickness is only required to be 3-5 um, even the number of times of friction is more than 5 thousand, the definition and the integrity of patterns and characters can be ensured, the durability of electronic products can be greatly improved, and the printing ink can be widely applied to the coating protection of digital 3C products.

Inventors

• CHEN GUOFU
• LUO QUN
• HE CHAOHUI
• LIN WEI
• WANG KAI

Assignees

• 得利高(惠州)化工有限公司

Dates

Publication Date

20260505

Application Date

20240805

Claims (8)

1. 1. The high wear-resistant matte UV ink for printing is characterized by comprising, by mass, 26-58 parts of polyurethane acrylate, 7-11 parts of photoinitiator, 5-9 parts of raw tung oil, 17-27 parts of UV monomer, 7-13 parts of modified nano powder dispersion liquid, 5-9 parts of matting powder and 1-5 parts of auxiliary agent, wherein the components are as follows The preparation method of the modified nano powder dispersion liquid comprises the following steps: adding 50-70 parts of butyl acetate into a container, adding 5-15 parts of nano powder, heating to 50-70 ℃, dispersing at a high speed for 0.5-1.5h, dropwise adding 5-15 parts of silane coupling agent KH560 while stirring, and continuing dispersing at a high speed for 1-3 h to obtain a mixture a; Adding 30-50 parts of UV monomer into another container, heating to 75-85 ℃ and preserving heat for 10-30 min, adding the mixture a, preserving heat and stirring for 1-3 h continuously, wherein the stirring speed is 3000-8000 r/min, and obtaining the modified nano powder dispersion liquid; the number of the polyurethane acrylic ester functional groups is 6-15.
2. 2. The high abrasion resistant matte UV ink for printing according to claim 1, wherein the photoinitiator is one or more of 1-hydroxycyclohexyl phenyl ketone, 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide, ethyl 2,4, 6-trimethylbenzoyl phenyl phosphonate, 2-methyl-2- (4-morpholino) -1- [4- (methylthio) phenyl ] -1-propanone, 4- (phenylthio) phenyldiphenylsulfonium hexafluorophosphate, 4' -xylyliodonium hexafluorophosphate.
3. 3. The high wear-resistant matte UV ink for printing according to claim 1, wherein the UV monomer is one or more of dipentaerythritol hexaacrylate, pentaerythritol triacrylate, trimethylolpropane triacrylate, 1, 6-hexanediol diacrylate, isobornyl methacrylate and isobornyl acrylate.
4. 4. The high abrasion resistant matte UV ink for printing according to claim 1, wherein the matting powder is talc or precipitated silica.
5. 5. The high abrasion resistant matte UV ink for printing according to claim 1, wherein the auxiliary agent comprises at least one of a leveling agent and an antifoaming agent.
6. 6. The high abrasion resistant matte UV ink for printing according to claim 5, wherein said defoamer is a silicone defoamer or a polyether defoamer.
7. 7. The high wear-resistant matte UV ink for printing according to claim 1, wherein the nano powder is one or more of nano aluminum oxide, nano zirconium oxide, nano silicon oxide and nano magnesium oxide.
8. 8. The preparation method of the high-wear-resistance matte UV ink for printing according to claim 1 is characterized by comprising the steps of adding polyurethane acrylic ester, a photoinitiator, raw tung oil, a UV monomer and modified nano powder dispersion liquid in parts by weight into a container, stirring for 10-30 min at the temperature of 3000-8000 r/min at the temperature of 80-120 ℃ to obtain a mixed base material, cooling the mixed base material to room temperature, adding the auxiliary agent and the matting powder in parts by weight into the mixed base material, and dispersing for 10-20 min at the high speed at the temperature of 5000-10000 r/min at the normal temperature and normal pressure to obtain a finished product.

Description

High-wear-resistance matte UV ink for printing and preparation method thereof Technical Field The invention relates to the technical field of printing ink, in particular to high-wear-resistance matte UV printing ink for printing and a preparation method thereof. Background With the progress of society and the gradual improvement of the material culture level of people, related manufacturing industries of digital 3C electronic products such as computers, communication and consumer electronic products are rapidly developed, digital 3C electronic products are increasingly developed towards the directions of function diversity, performance refinement and decoration individuation, and therefore, coating layers are required to be printed on the surfaces of all parts of the digital 3C electronic products to play roles of decoration, marking or other functions. The matte UV ink has the characteristics of soft appearance, strong texture and the like, along with technological progress and aesthetic change of people, the high-wear-resistant UV ink with full matte effect is often required for the digital 3C electronic product at the high end, however, the high-gloss UV ink is mainly used in the market at present, the matte UV ink is less and is not wear-resistant, the wear resistance is difficult to reach the level of thousands times or more, the poor wear resistance of the conventional matte UV ink is probably caused by the fact that the conventional matte UV ink contains a large amount of matting powder and wear-resistant powder, the ink base material is poor in powder coating and poor in compatibility and the like, the coating thickness (generally more than 10 um) is often required to be increased for improving the wear resistance, the printing frequency is increased, and the production efficiency is reduced. Disclosure of Invention In order to solve the problems, one of the purposes of the application is realized by adopting the following technical scheme: The high-wear-resistance matte UV ink for printing comprises, by mass, 26-58 parts of polyurethane acrylate, 7-11 parts of photoinitiator, 5-9 parts of raw tung oil, 17-27 parts of UV monomer, 7-13 parts of modified nano powder dispersion liquid, 5-9 parts of matting powder and 1-5 parts of auxiliary agent. Preferably, the number of the polyurethane acrylate functional groups is 6-15, and after the polyurethane acrylate with high functional groups is subjected to photo-curing reaction, the formed crosslinked network is compact, so that the wear resistance of the finished product is improved. Preferably, the photoinitiator is one or more of 1-hydroxycyclohexyl phenyl ketone, 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide, ethyl 2,4, 6-trimethylbenzoyl phenyl phosphonate, 2-methyl-2- (4-morpholinyl) -1- [4- (methylthio) phenyl ] -1-acetone, 4- (phenylthio) phenyl diphenyl sulfonium hexafluorophosphate and 4,4' -xylyl iodonium hexafluorophosphate, and the photoinitiator has good solubility and reactivity in a system, high initiation efficiency, high curing speed and better curing effect. Preferably, the UV monomer is one or more of dipentaerythritol hexaacrylate, pentaerythritol triacrylate, trimethylolpropane triacrylate, 1, 6-hexanediol diacrylate, isobornyl methacrylate and isobornyl acrylate. Preferably, the matting powder is talc or precipitated silica. Preferably, the auxiliary agent comprises at least one of a leveling agent and a defoaming agent. Preferably, the defoamer is a silicone defoamer or a polyether defoamer. Preferably, the preparation method of the modified nano powder dispersion liquid comprises the following steps: adding 50-70 parts of butyl acetate into a container, adding 5-15 parts of nano powder, heating to 50-70 ℃, dispersing at a high speed for 0.5-1.5h, dropwise adding 5-15 parts of silane coupling agent KH560 while stirring, and continuing dispersing at a high speed for 1-3 h to obtain a mixture a; Adding 30-50 parts of UV monomer into another container, heating to 75-85 ℃ and preserving heat for 10-30 min, adding the mixture a, preserving heat and stirring for 1-3 h continuously, wherein the stirring speed is 3000-8000 r/min, and obtaining the modified nano powder dispersion liquid. Preferably, the nano powder is one or more of nano aluminum oxide, nano zirconium oxide, nano silicon oxide and nano magnesium oxide. The silane coupling agent KH560 is adopted to modify the nano-powder, so that the water resistance and corrosion resistance of the ink can be improved, and the compatibility of the nano-powder and polyurethane acrylic ester can be improved. The second purpose of the application is realized by adopting the following technical scheme: The preparation method of the high-wear-resistance matte UV ink for printing comprises the steps of adding the polyurethane acrylic ester, the photoinitiator, the raw tung oil, the UV monomer and the modified nano powder dispersion liquid in parts by weight into a container, stirring for 10-30 m