Skin-sensitive, UV-curing ink and its manufacturing process and application

Abstract

The present invention relates to ink technology, in particular to a skin-sensitive, UV-curable ink, as well as its manufacturing process and application. The ink consists of the following components by weight: 2 to 6% photoinitiator, 20 to 30% initiator monomer, 1 to 2% haptic aid, 1 to 2% functional additives, and the remainder as a prepolymer. The haptic aid contains a modified nanomolybdenum disulfide and a modified fumed silica in a mass ratio of 1:(0.8-1.2). The resulting ink exhibits good abrasion resistance and wear-related self-repair properties, and can effectively maintain the skin feel on the surface of the oil film.

Description

TECHNOLOGY AREA

[0001] The invention relates to ink technology, in particular to a skin-sensitive, UV-light-curing ink as well as its manufacturing process and application. BACKGROUND

[0002] UV-curable ink is an ink material that can quickly cure into a film under UV light. It has been widely used in printing, coating, and smart manufacturing in recent years. Compared with traditional thermosetting inks, UV-curable inks feature faster curing speeds, better environmental performance, and exceptionally good oil film properties after curing. Furthermore, the tactile additive added to the ink can impart a tactile sensation to the oil film after curing, making it as soft as human skin, thus meeting consumer expectations for the appearance and hand feel of products.

[0003] From US2006 / 0246305 A1 a coating composition is known comprising coloring particles enclosed in a polymer and an alkoxide of the general formula RxM(OR')zx, wherein R is an organic radical, M is silicon, aluminum, titanium and / or zirconium, each R' is independently an alkyl radical, z is the valence of M and x is a number less than z, which may also be zero.

[0004] In the prior art, a conventional skin-sensitive, UV-curable ink consists of, among other components, a photoinitiator, a monomer, a prepolymer, and additives. The photoinitiator can generate free radicals or cations under UV irradiation, which lead to the polymerization of the monomer with the prepolymer and subsequently to the formation of a cured film. However, it should be noted that existing skin-sensitive, UV-curable inks are susceptible to surface aging, tactile degradation, unwanted stickiness, and discoloration over long-term use, which urgently needs to be improved. DESCRIPTION OF THE INVENTION

[0005] The invention is based on the object of providing a skin-sensitive, UV-light-curing ink as well as its manufacturing method and application, wherein the ink has good abrasion resistance and wear-related self-repairing property and can then effectively maintain the skin feel on the surface of the oil film.

[0006] To achieve the object, a skin-sensitive and UV-curable ink is provided, consisting of 2 to 6% photoinitiator, 20 to 30% initiator monomer, 1 to 2% haptic agent, 1 to 2% functional additives, and the remainder as prepolymer, wherein the haptic agent contains a modified nanomolybdenum disulfide and a modified fumed silica in a mass ratio of 1: (0.8-1.2), wherein the modified nanomolybdenum disulfide is produced according to the manufacturing process by separating an activated powder from the nanomolybdenum disulfide ultrasonically dispersed in an alkaline solution and then drying the activated powder ultrasonically dispersed in a maleic anhydride solution.According to the manufacturing process, the modified fumed silica is obtained by separating a gas-phase powder from the fumed silica ultrasonically dispersed in a silane coupling solution, followed by drying the gas-phase powder ultrasonically dispersed and reacting in a polydimethylsiloxane solution. According to the invention, the initiator monomer comprises at least one of isobornyl acrylate, isobornyl methacrylate, dipropylene glycol diacrylate, and trimethylolpropane triacrylate, and / or the prepolymer comprises at least one of epoxy acrylate, polyurethane acrylate, and polyether acrylate.

[0007] It may further be configured such that the alkaline solution in ultrasonically dispersing the nanomolybdenum disulfide contains at least one of sodium hydroxide solution, potassium hydroxide solution, barium hydroxide solution and calcium hydroxide solution.

[0008] It may further be designed such that the mixing ratio of the nanomolybdenum disulfide to the alkaline solution during ultrasonic dispersion of the nanomolybdenum disulfide in the alkaline solution is 0.05 to 0.08 g / mL.

[0009] It may further be designed such that the average grain size of the nanomolybdenum disulfide during ultrasonic dispersion of the nanomolybdenum disulfide in the alkaline solution is 50 to 500 nm.

[0010] It may further be designed such that during ultrasonic dispersing of the nanomolybdenum disulfide in the alkaline solution, ultrasonic processing is performed on the mixture of the nanomolybdenum disulfide with the alkaline solution under 20 - 100 kHz for 10 - 20 minutes.

[0011] It can further be designed such that during ultrasonic dispersion of the activated powder in the maleic anhydride solution, the mass ratio of the activated powder to the maleic anhydride in the maleic anhydride solution is 1: (0.4 - 0.6).

[0012] It may further be configured such that the solvent for the maleic anhydride solution during ultrasonic dispersing of the activated powder in the maleic anhydride solution comprises at least one substance among acetone, chloroform, ethanol and ether, while the maleic anhydride solvent also contains 5 to 10 vol% deionized water.

[0013] It may further be designed such that during ultrasonic dispersing of the activated powder in the maleic anhydride solution, ultrasonic processing is carried out on the mixture of the activated powder with the maleic anhydride solution under 20 - 40 kHz for 10 - 20 minutes.

[0014] It can further be designed such that the average grain size of the fumed silica during ultrasonic dispersion of the fumed silica in the silane coupling solution is 7 to 40 nm.

[0015] It may further be designed such that during ultrasonic dispersion of the fumed silica in the silane coupling solution, the mass ratio of the fumed silica to the silane coupling agent in the silane coupling solution is 1: (0.1 - 0.2).

[0016] It can further be designed such that during ultrasonic dispersion of the fumed silica in the silane coupling solution, the mixing ratio of the fumed silica to the silane coupling solution is 0.04 to 0.06 g / mL.

[0017] It can further be designed such that the silane coupling agent contains at least one component selected from trimethylchlorosilane, dimethyldichlorosilane, methyltrichlorosilane, gamma-aminopropyltriethoxysilane during ultrasonic dispersing of the fumed silica in the silane coupling solution.

[0018] It may further be designed such that during ultrasonic dispersing and reacting of the gas phase powder in the polydimethylsiloxane solution, the mass ratio of the gas phase powder to the polydimethylsiloxane in the polydimethylsiloxane solution is 1: (0.3 - 0.5).

[0019] It can further be designed such that during ultrasonic dispersing and reacting of the gas phase powder in the polydimethylsiloxane solution, the mixing ratio of the gas phase powder to the polydimethylsiloxane solution is 0.02 to 0.05 g / mL.

[0020] It may further be configured such that the solute of the polydimethylsiloxane solution during ultrasonic dispersing and reacting of the gas phase powder in the polydimethylsiloxane solution contains at least one component among toluene, xylene and carbon tetrachloride.

[0021] It can further be designed such that the haptic aid contains a modified nanomolybdenum disulfide and a modified pyrogenic silica in a mass ratio of 1:1.

[0022] It may further be configured such that the photoinitiator comprises at least one of photoinitiator TPO and photoinitiator 819.

[0023] It can further be designed so that the functional additives contain flexibilizer, leveling agent, antioxidant, defoamer, thinner.

[0024] It may further be configured such that the flexibilizer contains at least one of oleic acid polyoxyethylene ester and glycerol monofatty acid ester.

[0025] It can further be designed so that the leveling agent contains at least one of TEGO Glide 410 and BYK-333.

[0026] It may further be designed such that the antioxidant contains at least one of butylated hydroxyanisole, dibutylated hydroxytoluene, terbutylated hydroquinone.

[0027] It may further be configured such that the defoamer contains at least one of BYK-024 and Dow Corning DC8628.

[0028] It may further be configured such that the diluent contains at least one of caprolactone acrylate monomer and castor oil-based acrylate.

[0029] For dissolving, a manufacturing process for the present skin-sensitive, UV-light-curing ink is further provided, which comprises obtaining the skin-sensitive and UV-light-curing ink by mixed grinding of photoinitiator, initiator monomer, haptic aid, functional additives and prepolymer.

[0030] For dissolving, an application of the present skin-sensitive, UV-light curing ink is further provided. DETAILED DESCRIPTION OF EMBODIMENTS

[0031] The preferred embodiments are described below with reference to the drawings. It should be noted that the embodiment of the invention is not limited thereto. All other embodiments achieved based on the present invention without creativity and innovation fall within the scope of the present invention. Any technical or scientific term used herein, unless otherwise defined, has a common meaning understood by a person having ordinary skill in the art to which the present invention pertains.

[0032] The skin-sensitive, UV-curable ink according to the invention consists, by weight, of 2 to 6% photoinitiator, 20 to 30% initiator monomer, 1 to 2% haptic aid, 1 to 2% functional additives, and the remainder as prepolymer.

[0033] Specifically, the photoinitiator added to the ink can generate free radicals under UV irradiation, leading to the polymerization of the monomer with the prepolymer and then to the rapid curing of the ink. When the initiator monomer polymerizes with the prepolymer, the initiator monomer provides specific crosslinking points that impart good flexibility and mechanical strength to the cured film. When the prepolymer, as the main film former, is cured, the ink is hardened with the addition of a haptic aid to maintain the smoothness and tactile effect of the ink surfaces.

[0034] The haptic aid contains a modified nanomolybdenum disulfide and a modified fumed silica in a mass ratio of 1:(0.8-1.2). Specifically, the modifications of the nanomolybdenum disulfide and fumed silica can effectively improve the compatibility and dispersion of the nanomolybdenum disulfide and fumed silica in the ink. Furthermore, the fine particles can be evenly dispersed in the ink and then cured into a film, enhancing the mechanical strength and abrasion resistance of the cured film. Furthermore, due to its low friction coefficient, the nanomolybdenum disulfide can form a lubricating layer within the cured film to reduce friction and wear.If the cured film is worn, the nanomolybdenum disulfide and fumed silica are redistributed to fill the wear areas and improve the skin feel of the cured film surface.

[0035] The production process for modified nanomolybdenum disulfide involves separating an activated powder from the nanomolybdenum disulfide ultrasonically dispersed in an alkaline solution, followed by drying the activated powder ultrasonically dispersed in a maleic anhydride solution. Treating the nanomolybdenum disulfide in the alkaline solution not only further increases the specific surface area of ​​the nanomolybdenum disulfide, but also thoroughly hydroxylates the surface. This increases the active surface areas and promotes surface grafting of the maleic anhydride.

[0036] The manufacturing process for modified fumed silica involves separating a gas-phase powder from the fumed silica ultrasonically dispersed in a silane coupling solution, followed by drying the gas-phase powder ultrasonically dispersed and reacting in a polydimethylsiloxane solution. Specifically, the silane coupling agent can form stable silicon-oxygen bonds on the surface of the fumed silica, while the polydimethylsiloxane modification further improves the lubricating and dispersing properties of the fumed silica.

[0037] In a specific embodiment, the alkaline solution used for ultrasonically dispersing the nanomolybdenum disulfide contains at least one of sodium hydroxide solution, potassium hydroxide solution, barium hydroxide solution, and calcium hydroxide solution. Specifically, the solute in the alkaline solution can be deionized water, while the alkali can be a saturated solution, such as sodium hydroxide, saturated aqueous solution, potassium hydroxide, or saturated aqueous solution.

[0038] In a specific embodiment, the mixing ratio of the nanomolybdenum disulfide to the alkaline solution during ultrasonic dispersion of the nanomolybdenum disulfide in the alkaline solution is 0.05 to 0.08 g / mL. Mixing the nanomolybdenum disulfide according to this mixing ratio can lead to better dispersion of the nanomolybdenum disulfide in the alkali.

[0039] In a specific embodiment, the average grain size of the nanomolybdenum disulfide during ultrasonic dispersion of the nanomolybdenum disulfide in the alkaline solution is 50 to 500 nm. Specifically, the nanomolybdenum disulfide can be obtained from commercially available products, such as from zhongkeyannuo (Beijing) Co. Ltd. with an average grain size of 50 nm and a specific surface area of ​​120 m 2 / G.

[0040] In a specific embodiment, during ultrasonic dispersion of nanomolybdenum disulfide in the alkali, ultrasonic processing is carried out on the mixture of nanomolybdenum disulfide with the alkaline solution at 20-100 kHz for 10-20 minutes to prevent possible agglomeration of nanomolybdenum disulfide by means of the ultrasonic effect.

[0041] In a specific embodiment, when ultrasonically dispersing the activated powder in the maleic anhydride solution, the mass ratio of the activated powder to the maleic anhydride in the maleic anhydride solution is 1:(0.4-0.6). Specifically, when ultrasonically dispersing the activated powder in the maleic anhydride solution, the solvent for the maleic anhydride solution includes at least one of acetone, chloroform, ethanol, and ether, while the maleic anhydride solvent also contains 5 to 10 vol% deionized water. Specifically, the maleic acid formed by hydrolysis of maleic anhydride can react with the hydroxyl group on the surface of the activated powder, thus enhancing the graft-modifying effect of the maleic anhydride.

[0042] In a specific embodiment, during ultrasonic dispersing of the activated powder in the maleic anhydride solution, ultrasonic processing is performed on the mixture of the activated powder with the maleic anhydride solution under 20 - 40 kHz for 10 - 20 minutes.

[0043] In a certain embodiment, the average grain size of the fumed silica during ultrasonic dispersion of the fumed silica in the silane coupling solution is 7 to 40 nm.

[0044] Specifically, fumed silica can be obtained from commercially available products, such as M-5 grade from Jinan Yingyu Chemical Co. Ltd.

[0045] In a specific embodiment, during ultrasonic dispersion of the fumed silica in the silane coupling solution, the mass ratio of the fumed silica to the silane coupling agent in the silane coupling solution is 1:(0.1-0.2). The silane coupling agent contains at least one component selected from trimethylchlorosilane, dimethyldichlorosilane, methyltrichlorosilane, and gamma-aminopropyltriethoxysilane when ultrasonically dispersing the fumed silica in the silane coupling solution.

[0046] Specifically, when ultrasonically dispersing the fumed silica in the silane coupling solution, the mixing ratio of the fumed silica to the silane coupling solution is 0.04 to 0.06 g / mL.

[0047] In a certain embodiment, the mass ratio of the gas phase powder to the polydimethylsiloxane in the polydimethylsiloxane solution is 1: (0.3 - 0.5), while the mixing ratio of the gas phase powder to the polydimethylsiloxane solution is 0.02 to 0.05 g / mL.

[0048] The solute of the polydimethylsiloxane solution contains at least one component among toluene, xylene and carbon tetrachloride during ultrasonic dispersion and reaction of the gas phase powder in the polydimethylsiloxane solution.

[0049] In a specific embodiment, the haptic aid contains a modified nanomolybdenum disulfide and a modified fumed silica in a mass ratio of 1:1.

[0050] In certain embodiments, the photoinitiator comprises at least one of photoinitiator TPO and photoinitiator 819, while the initiator monomer comprises at least one of isobornyl acrylate, isobornyl methacrylate, dipropylene glycol diacrylate, and trimethylolpropane triacrylate.

[0051] The prepolymer comprises at least one of epoxy acrylate, polyurethane acrylate and polyether acrylate.

[0052] In a specific embodiment, the functional additive contains a flexibilizer, a flow agent, an antioxidant, a defoamer, and a diluent. The flexibilizer contains at least one of oleic acid polyoxyethylene ester and glycerol monofatty acid ester; the flow agent contains at least one of TEGO Glide 410 and BYK-333; the antioxidant contains at least one of butylated hydroxyanisole, dibutylated hydroxytoluene, and terbutylated hydroquinone; the defoamer contains at least one of BYK-024 and Dow Corning DC8628; and the diluent contains at least one of caprolactone acrylate monomer and castor oil-based acrylate.

[0053] For dissolving, a manufacturing process for the present skin-sensitive, UV-light-curing ink is further provided, which comprises obtaining the skin-sensitive and UV-light-curing ink by mixed grinding of photoinitiator, initiator monomer, haptic aid, functional additives and prepolymer. Embodiment I

[0054] With reference to the embodiments of the invention from I to V, a skin-sensitive and UV-curable ink is provided, the components and consumption amount (in mass percent) of which are as follows in Table 1. Tab.1 Components and consumption quantity for the embodiments from I to V Embodiment I Embodiment II Embodiment III Embodiment VI Execution form V Photoinitiator 2,3 4,4 5,8 3,7 4,1 Initiator monomer 20 24 30 23 25 modified nanomolybdenum disulfide 0,7 0,6 1 0,7 0,8 modified fumed silica 0,6 0,5 1 0,6 0,9 Flexibilizer 0,3 0,2 0,2 0,1 0,4 Leveling agent 0,4 0,3 0,3 0,3 0,2 Antioxidants 0,4 0,5 0,4 0,2 0,3 Defoamers 0,2 0,3 0,3 0,3 0,4 thinner 0,1 0,3 0,3 0,5 0,1 Prepolymer rest rest rest rest rest

[0055] In embodiments I to V, the photoinitiator used is Photoinitiator 819 (CAS: 162881-26-7), the initiator monomer is isobornyl acrylate (from Shanghai Hongshuo Chemical Technology Co. Ltd, CAS: 5888-33-5, IBOA), the flexibilizer is polyoxyethylene oleate (from Jiangsu Haian Petrochemical Factory, Model No. A-105, CAS: 9004-96-0), the leveling agent is BYK-333 (from Bickel Chemical), the antioxidant is butylhydroxyanisole (from Shanxi Chenming Biotechnology Co. Ltd, CAS: 25013-16-5), the defoamer is BYK-024 (from Bickel Chemical), the diluent is caprolactone acrylate monomer (from Jiangsu Layne Environmental Protection Science and Technology Co., Ltd, CAS: 110489-05-9), and the prepolymer is an epoxy acrylic ester (from Shanghai Zhenlijie Network Technology Co., Ltd. catalog number EBECRYL 9636).

[0056] In embodiments I to V, the manufacturing process of the modified nanomolybdenum disulfide comprises the following operations: I. Obtaining an activated powder by adding a nanomolybdenum disulfide (from Beijing Zhongke Yannuo New Material Technology Co., Ltd.) into a saturated aqueous sodium hydroxide solution with a solid-liquid ratio of 0.06 g / ml, followed by filtration after ultrasonic treatment at 40 kHz for 15 minutes, and finally washing three times with deionized water and then drying to constant weight; II. Mixing the activated powder with the maleic anhydride solution (solvent containing acetone and water in a volume ratio of 9:1, mass ratio of activated powder to maleic anhydride 1:0.5, maleic anhydride comes from Jinan Aoxing Chemical Co. Ltd.), followed by filtration after 15 minutes of ultrasonic treatment at 40 kHz, and finally washing three times with deionized water and then drying to constant weight.

[0057] In the embodiments from I to V, the production process of the modified fumed silica comprises the following operations: I. Obtaining a gas phase powder by a 10-minute ultrasonic dispersion of the fumed silica (Jinan Yingyu Chemical Co. Ltd., M-5) with an average grain size of 10 nm in a chlorotrimethylsilane-ethanol solution (mass ratio of the fumed silica to trimethylchlorosilane 1:0.1, trimethylchlorosilane comes from Shandong Jinyueyuan New Material Co. Ltd.) in the solid-liquid ratio of 0.05 g / mL, followed by filtration and finally washing three times with deionized water and then drying to constant weight; II. Obtaining a modified fumed silica by ultrasonic mixing of the gas-phase powder in a polydimethylsiloxane-toluene solution (polydimethylsiloxane from Jiangsu Layne Environmental Protection Technology Co., Ltd., CAS: 373-49-9, mass ratio of gas phase powder to polydimethylsiloxane 1: 0.5), followed by filtration and washing with deionized water and then drying to constant weight.

[0058] In embodiments I to V, the manufacturing process for the skin-sensitive and UV-curable ink comprises the following steps: I. Heating the photoinitiator, initiator monomer, haptic aid, functional additives, and prepolymer until melting; II. Stirring, mixing, and milling. Comparison version I

[0059] Comparative embodiment I provides a skin-sensitive, UV-light-curing ink which differs from embodiment III in that it does not contain modified fumed silica but 2% modified nanomolybdenum disulfide. Comparison version II

[0060] Comparative embodiment II provides a skin-sensitive, UV-light curing ink which differs from embodiment III in that it does not contain modified nanomolybdenum disulfide but instead contains 1% modified fumed silica. Comparison version III

[0061] Comparative embodiment III provides a skin-sensitive, UV-light curing ink which differs from embodiment III in that it does not contain modified nanomolybdenum disulfide but instead contains 2% modified fumed silica. Comparison version IV

[0062] Comparative embodiment IV provides a skin-sensitive, UV-light curing ink which differs from embodiment III in that no modified nanomolybdenum disulfide is added but 1% nanomolybdenum disulfide. Comparison version V

[0063] Comparative embodiment III provides a skin-sensitive, UV-light curing ink which differs from embodiment V in that it does not contain modified nanomolybdenum disulfide but 2% modified fumed silica. Comparison version VI

[0064] Comparative embodiment III provides a skin-sensitive, UV-light-curing ink which differs from embodiment VI in that it does not contain modified nanomolybdenum disulfide and modified fumed silica, but instead contains 1% fumed silica and 1% nanomolybdenum disulfide. Quality inspection

[0065] After printing the skin-sensitive, UV-curable ink according to the embodiments I to V with a 300 mesh screen print, UV curing is carried out, for example, and then tested as follows:

[0066] The cured film is rubbed 100 times with an abrasion tester at a pressure of 5 N and then maintained at 25 °C for 12 days. Ten men and ten women aged 20 to 25 years are selected to evaluate the feel of the cured film before and after rubbing. Surface roughness is subjectively rated as 0, and the skin feel of the surfaces as 100. The ratings are statistically averaged by removing the highest and lowest values. The results are presented in Table 2.

[0067] After a 3M810 adhesive tape adheres to the surface of the cured film for 10 seconds, the tape can be quickly pulled upwards, and then the ratio of the area of ​​the hard film on the surface of the tape to the total area of ​​the tape is calculated. After repeating the test five times, an average value is determined. The peel rates of the cured film are recorded in Table 2.

[0068] After preparing the acid weld based on the standard documented in AATCC TM15-2002, the acid weld can be applied to the surface of the cured film for corrosion treatment and then kept at 40°C until dry. After repeating the process ten times, the peel rate of the cured film is determined using 3M810 tape. Tab.2 Quality test data Tactile effect Peeling rate / % Before rubbing / After rubbing / Retention rate / % Before corrosion After corrosion Embodiment I 93,42 89,91 96,24 1,1 6,8 Embodiment II 93,68 90,70 96,82 0,9 6,2 Embodiment III 96,14 95,02 98,84 0,6 5,7 Embodiment IV 93,25 91,02 97,61 0,8 5,8 Embodiment V 93,62 91,59 97,83 1,0 6,7 Comparison version I 83,46 73,04 87,51 5,7 26,8 Comparison version II 82,32 70,25 85,34 3,5 22,7 Comparison version III 83,97 74,46 88,67 5,2 26,1 Comparison version IV 92,68 78,33 84,52 3,4 23,6 Comparison version V 68,74 54,48 78,26 7,2 32,4 Comparison version VI 81,57 67,23 82,42 5,8 28,3

[0069] Although the embodiments of the invention are as described above, it is clear to a person skilled in the art that various modifications and variations of these embodiments can be made. It is understood that these embodiments do not limit the scope of the invention, but serve only to describe the invention. In this context, all new individual and combination features disclosed in the description and / or drawings are considered essential to the invention.

Claims

[1] Skin-sensitive, UV-light-curing ink, consisting of 2 to 6% photoinitiator, 20 to 30% initiator monomer, 1 to 2% haptic aid, 1 to 2% functional additives and the remainder as prepolymer, wherein the haptic aid contains a modified nanomolybdenum disulfide and a modified fumed silica in a mass ratio of 1: (0.8-1.2), wherein the modified nanomolybdenum disulfide is produced according to the manufacturing process by separating an activated powder from the nanomolybdenum disulfide ultrasonically dispersed in an alkaline solution and then drying the activated powder ultrasonically dispersed in a maleic anhydride solution,while the modified fumed silica is produced according to the manufacturing process by separating a gas phase powder from the fumed silica ultrasonically dispersed in a silane coupling solution and then drying the gas phase powder ultrasonically dispersed and reacting in a polydimethylsiloxane solution, characterized by that the initiator monomer comprises at least one of isobornyl acrylate, isobornyl methacrylate, dipropylene glycol diacrylate and trimethylolpropane triacrylate, and / or the prepolymer comprises at least one of epoxy acrylate, polyurethane acrylate and polyether acrylate. [2] Skin-sensitive, UV-curable ink according to claim 1, characterized bythat the alkaline solution in the ultrasonic dispersing of the nanomolybdenum disulfide contains at least one solution among sodium hydroxide solution, potassium hydroxide solution, barium hydroxide solution and calcium hydroxide solution, and / or the mixing ratio of the nanomolybdenum disulfide in the alkaline solution is 0.05 to 0.08 g / mL, and / or the average grain size of the nanomolybdenum disulfide is 50 to 500 nm, and / or ultrasonic processing is carried out on the mixture of the nanomolybdenum disulfide with the alkaline solution under 20 - 100 kHz for 10 - 20 minutes. [3] Skin-sensitive, UV-curable ink according to claim 1, characterized bythat during ultrasonic dispersing of the activated powder in the maleic anhydride solution, the mass ratio of the activated powder to the maleic anhydride in the maleic anhydride solution is 1: (0.4 - 0.6), and / or the solvent for the maleic anhydride solution contains at least one substance among acetone, chloroform, ethanol and ether, while the maleic anhydride solvent also contains 5 to 10 vol.% of deionized water, and / or ultrasonic processing is carried out on the mixture of the activated powder with the maleic anhydride solution under 20 - 40 kHz for 10 - 20 minutes. [4] Skin-sensitive, UV-curable ink according to claim 1, characterized bythat during ultrasonic dispersing of the fumed silica in the silane coupling solution, the average grain size of the fumed silica is 7 - 40 nm, and / or the mass ratio of the fumed silica to the silane coupling agent in the silane coupling solution is 1: (0.1 - 0.2), and / or the mixing ratio of the fumed silica to the silane coupling solution is 0.04 to 0.06 g / mL, and / or the silane coupling agent in the silane coupling solution contains at least one component from trimethylchlorosilane, dimethyldichlorosilane, methyltrichlorosilane, gamma-aminopropyltriethoxysilane. [5] Skin-sensitive, UV-curable ink according to claim 1, characterized bythat during ultrasonic dispersing and reacting of the gas phase powder in the polydimethylsiloxane solution, the mass ratio of the gas phase powder to the polydimethylsiloxane in the polydimethylsiloxane solution is 1: (0.3 - 0.5), and / or the mixing ratio of the gas phase powder to the polydimethylsiloxane solution is 0.02 to 0.05 g / mL, and / or the solute of the polydimethylsiloxane solution contains at least one component among toluene, xylene and carbon tetrachloride. [6] Skin-sensitive, UV-curable ink according to claim 1, characterized by that the haptic aid contains a modified nanomolybdenum disulfide and a modified fumed silica in a mass ratio of 1 :

1. [7] Skin-sensitive, UV-curable ink according to claim 1, characterized bythat the functional additives contain flexibilizer, leveling agent, antioxidant, defoamer, thinner, wherein the flexibilizer contains at least one of oleic acid polyoxyethylene ester and glycerol monofatty acid ester, and / or the antioxidant contains at least one of butylated hydroxyanisole, dibutylated hydroxytoluene, terbutylated hydroquinone, and / or the thinner contains at least one of caprolactone acrylate monomer and castor oil-based acrylate. [8] A manufacturing process for skin-sensitive, UV-curable ink according to any one of the preceding claims from 1 to 7, characterized by that the process comprises obtaining the skin-sensitive and UV-light-curing ink by mixed grinding of photoinitiator, initiator monomer, haptic aid, functional additives and prepolymer. [9] Use of skin-sensitive, UV-curable ink according to any one of the preceding claims 1 to 7, characterized by .