CN110387163B - Low-viscosity water-based UV ink and preparation method thereof - Google Patents
Low-viscosity water-based UV ink and preparation method thereof Download PDFInfo
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- CN110387163B CN110387163B CN201910666707.9A CN201910666707A CN110387163B CN 110387163 B CN110387163 B CN 110387163B CN 201910666707 A CN201910666707 A CN 201910666707A CN 110387163 B CN110387163 B CN 110387163B
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09D11/107—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
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Abstract
The invention discloses low-viscosity water-based UV (ultraviolet) ink which comprises the following components in percentage by mass: 30-50% of water-based acrylic prepolymer, 20-50% of water-based active diluent, 10-30% of solvent, 1-4% of photoinitiator, 5-10% of pigment and 2-5% of auxiliary agent.
Description
Technical Field
The invention belongs to the technical field of ink preparation, relates to low-viscosity water-based UV ink, and further relates to a preparation method of the low-viscosity water-based UV ink.
Background
UV ink refers to ink that is formed into a film and dried by polymerizing monomers in an ink vehicle into polymers using ultraviolet light of different wavelengths and energies under ultraviolet irradiation. The main components of the paint are prepolymer, reactive diluent and photoinitiator, and the auxiliary components are pigment, filler, additive and the like. The UV ink has the characteristics of strong color matching capability, good printability, high curing speed, high wear resistance, good glossiness and the like, and also has good adhesive force and medium resistance. In addition, the UV ink does not contain volatile organic solvents, thereby being in line with the era theme of green development.
The UV ink prepared in the patent of flexo printing water-based UV ink and a preparation method thereof, (application publication No. CN 103275551A, publication No. 2013.9.4) only contains prepolymer and does not contain monomer, so that the crosslinking degree is low, the content of the prepolymer in the patent is more than 60 percent, and the prepolymer prepared in the patent is not purified, has more impurities and reduces the curing rate.
The use of hexafunctional urethane acrylate, trifunctional aliphatic urethane acrylate and silicone modified polyester resin as prepolymers in a colored UV ink for glass (application publication No. CN105315769A, published: 2016.2.10) resulted in an ink system with a prepolymer content of up to 59% or more, indicating that the degree of crosslinking of reactive diluents with the prepolymers was low and that the prepolymer preparation process was complicated.
Also, UV inks have some significant disadvantages. The reactive diluents used in UV inks are typically multifunctional acrylates, resulting in UV inks that are twice as expensive as conventional inks. In addition, because the penetrating power of ultraviolet light is poor, the irradiation force at the bottom of the ink layer is insufficient, so that the curing degree is insufficient, and the adhesive force is poor. Meanwhile, the UV ink has no medium resistance and is difficult to clean, so that the popularization and the use of the UV ink in the market are greatly limited.
Disclosure of Invention
The invention aims to provide a low-viscosity water-based UV ink, which solves the problem of long ink curing time in the prior art.
Another object of the present invention is to provide a method for preparing a low viscosity aqueous UV ink.
The invention adopts the technical scheme that the low-viscosity water-based UV ink comprises the following components in percentage by mass: 30-50% of water-based acrylic prepolymer, 20-50% of water-based reactive diluent, 10-30% of solvent, 1-4% of photoinitiator, 5-10% of pigment and 2-5% of auxiliary agent, wherein the sum of the mass percentages of the components is 100%.
The invention adopts another technical scheme that a preparation method of the low-viscosity water-based UV ink is carried out according to the following steps:
weighing styrene and acrylic acid, adding sodium bisulfite as a catalyst, reacting for a period of time to obtain a styrene acrylic acid copolymer, adding hydroxyethyl methacrylate, adding triethylamine as a catalyst, and reacting for a period of time to obtain a water-based acrylic acid prepolymer;
weighing ethylenediamine and glycidyl methacrylate, uniformly stirring, and reacting at room temperature for a period of time to obtain a water-based reactive diluent;
adding the aqueous acrylic prepolymer and the aqueous reactive diluent into a solvent according to a certain proportion, uniformly mixing, placing the mixture into a magnetic stirrer for stirring, and stirring for a period of time to obtain a mixed solution;
adding the pigment, the auxiliary agent and the photoinitiator into the mixed solution obtained in the step 3 according to a ratio, and continuously stirring to obtain the water-based UV ink;
and 5, curing:
and (4) uniformly coating the water-based UV ink prepared in the step (4) on the surface of the coated paper, and placing the coated paper under an LED type UV surface light source controller for irradiation for 0.5-2 s to enable the water-based UV ink to be cured.
In the step 1, the molar ratio of styrene to acrylic acid is 1: 1-2-3, the molar ratio of hydroxyethyl methacrylate to acrylic acid is 1: 1-2, sodium bisulfite accounts for 3-10% of the total mass of styrene and acrylic acid, and triethylamine accounts for 3-10% of the total mass of styrene acrylic acid copolymer and hydroxyethyl methacrylate.
In the step 1, the reaction time of styrene and acrylic acid is 2-3 h, the reaction temperature is 55-65 ℃, the reaction time of styrene acrylic copolymer and hydroxyethyl methacrylate is 20-24 h, and the reaction temperature is 50-60 ℃.
In the step 2, the molar ratio of the ethylenediamine to the glycidyl methacrylate is 1: 4-6.
In the step 2, the reaction time of the ethylenediamine and the glycidyl methacrylate is 5.5-6.5 h.
In the step 3, the solvent is a mixed solution of water, ethanol and THF, and the molar ratio of the water, the ethanol and the THF is 6:3: 1.
In the step 3, the reaction temperature is 60-80 ℃, the reaction time is 0.5-1 h, and the rotating speed is 500-800 r/min.
In the step 4, the photoinitiator is any one or a mixture of more of 2-isopropyl thioxanthone, trimethyl benzoyl diphenyl phosphorus oxide and 2-hydroxy-2-methyl propiophenone, the pigment is methyl orange, and the auxiliary agent is an antifoaming agent.
In the step 4, the reaction temperature is 40-60 ℃, the reaction time is 1-2 h, and the rotating speed is 300-500 r/min.
The preparation method has the beneficial effects that the multifunctional oligomer of styrene acrylic copolymer grafted hydroxyethyl methacrylate is obtained by adopting styrene and acrylic acid under the water bath condition and hydroxyethyl methacrylate under the catalysis of triethylamine, so that the cost for preparing the water-based UV ink can be greatly reduced; and because the ethylene diamine tetra-methacrylic acid glycidyl ester has many functional groups, the polymerization is easy to occur; in addition, the styrene can effectively improve the mechanical strength of the ink film, the acrylic acid and the HEMA are favorable for improving the water solubility of the ink, and simultaneously, the hydroxyethyl methacrylate has double bonds and aldehyde groups, so that the photocuring rate of the ink is greatly improved.
Drawings
FIG. 1 is an infrared spectrum of a water-based acrylic prepolymer in a low viscosity water-based UV ink of the present invention;
FIG. 2 is an infrared spectrum of an aqueous reactive diluent in a low viscosity aqueous UV ink of the present invention;
FIG. 3 is a graph of the effect of photoinitiator content in a low viscosity aqueous UV ink of the present invention on the curing time of the aqueous UV ink;
FIG. 4 is a graph showing the effect of the aqueous acrylic prepolymer in a low viscosity aqueous UV ink on the curing time of the aqueous UV ink according to the present invention;
FIG. 5 is a graph showing the effect of the aqueous acrylic prepolymer in a low viscosity aqueous UV ink of the present invention on the abrasion resistance of the aqueous UV ink;
FIG. 6 is a graph illustrating the effect of an aqueous reactive diluent in a low viscosity aqueous UV ink on the curing time of the aqueous UV ink in accordance with the present invention;
FIG. 7 is a graph showing the effect of an aqueous reactive diluent in a low viscosity aqueous UV ink of the present invention on the abrasion resistance of the aqueous UV ink.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to low-viscosity water-based UV ink which comprises the following components in percentage by mass: 30-50% of water-based acrylic prepolymer, 20-50% of water-based reactive diluent, 10-30% of solvent, 1-4% of photoinitiator, 5-10% of pigment and 2-5% of auxiliary agent, wherein the sum of the mass percentages of the components is 100%.
The invention provides a preparation method of low-viscosity water-based UV ink, which comprises the following steps:
weighing styrene and acrylic acid, adding sodium bisulfite as a catalyst, reacting for a period of time to obtain a styrene acrylic acid copolymer, adding hydroxyethyl methacrylate, adding triethylamine as a catalyst, and reacting for a period of time to obtain a water-based acrylic acid prepolymer;
weighing ethylenediamine and glycidyl methacrylate, uniformly stirring, and reacting at room temperature for a period of time to obtain a water-based reactive diluent;
adding the aqueous acrylic prepolymer and the aqueous reactive diluent into a solvent according to a certain proportion, uniformly mixing, placing the mixture into a magnetic stirrer for stirring, and stirring for a period of time to obtain a mixed solution;
adding the pigment, the auxiliary agent and the photoinitiator into the mixed solution obtained in the step 3 according to a ratio, and continuously stirring to obtain the water-based UV ink;
and 5, curing:
and (4) uniformly coating the water-based UV ink prepared in the step (4) on the surface of the coated paper, and placing the coated paper under an LED type UV surface light source controller for irradiation for 0.5-2 s to enable the water-based UV ink to be cured.
In the step 1, the molar ratio of styrene to acrylic acid is 1: 1-2-3, the molar ratio of hydroxyethyl methacrylate to acrylic acid is 1: 1-2, the content of sodium bisulfite accounts for 3-10% of the total mass of styrene and acrylic acid, and the content of triethylamine accounts for 3-10% of the total mass of styrene acrylic acid copolymer and hydroxyethyl methacrylate.
In the step 1, the reaction time of styrene and acrylic acid is 2-3 h, the reaction temperature is 55-65 ℃, the reaction time of styrene acrylic acid copolymer and hydroxyethyl methacrylate is 20-24 h, and the reaction temperature is 50-60 ℃.
In the step 2, the molar ratio of the ethylenediamine to the glycidyl methacrylate is 1: 4-6.
In the step 2, the reaction time of the ethylenediamine and the glycidyl methacrylate is 5.5-6.5 h.
In the step 3, the solvent is a mixed solution of water, ethanol and THF, and the molar ratio of the water, the ethanol and the THF is 6:3: 1.
In the step 3, the reaction temperature is 60-80 ℃, the reaction time is 0.5-1 h, and the rotating speed is 500-800 r/min.
In the step 4, the photoinitiator is any one or a mixture of more of 2-isopropyl thioxanthone, trimethyl benzoyl diphenyl phosphorus oxide and 2-hydroxy-2-methyl propiophenone, the pigment is methyl orange, and the auxiliary agent is an antifoaming agent.
In the step 4, the reaction temperature is 40-60 ℃, the reaction time is 1-2 h, and the rotating speed is 300-500 r/min.
In the step 1, styrene and acrylic acid react under the catalysis of sodium bisulfite to obtain a styrene acrylic acid copolymer, and the prepared styrene acrylic acid copolymer reacts with hydroxyethyl methacrylate under the catalysis of triethylamine to obtain a water-based acrylic acid prepolymer, wherein the chemical equation is as follows:
in the step 2, ethylenediamine and glycidyl methacrylate react to obtain the aqueous reactive diluent, and the chemical equation is as follows:
FIG. 1 is an infrared spectrum of an aqueous acrylic prepolymer, from which 3434cm-1Is hydroxymethyl-OH stretching vibration absorption peak; 2993cm-1Is C-H stretching vibration absorption peak; 1747cm-1Where is C ═ O stretching vibration absorption peak; 1573cm-1C ═ C telescopic vibration absorption peak; 1471cm-1The benzene ring skeleton vibration absorption peak is obtained, and the synthesis of the expected styrene acrylic copolymer grafted hydroxyethyl methacrylate is realized.
FIG. 2 is an infrared spectrum of an aqueous reactive diluent, from which 3378cm can be seen-1Is hydroxymethyl-OH stretching vibration absorption peak; 2935cm-1Is C-H stretching vibration absorption peak; 1714cm-1Where is C ═ O stretching vibration absorption peak; 1604cm-1The compound has a C ═ C stretching vibration absorption peak, and the synthesis of the expected product ethylene diamine tetra (methacrylic acid) glycinamide is realized.
FIG. 3 is a graph showing the effect of the photoinitiator content on the curing time of the aqueous UV ink, and it can be seen from the graph that when the photoinitiator content in the aqueous UV ink is 4%, the ink has a relatively excellent curing speed, the higher the ratio of the photoinitiator is, the faster the curing speed is, the higher the ratio is, the slower the curing speed is.
Fig. 4 is a graph showing the effect of an aqueous acrylic prepolymer on the curing time of an aqueous UV ink, and it can be seen from the graph that when the ratio of the prepolymer in the entire aqueous UV ink system is 30% the photocuring speed of the aqueous UV ink is the fastest, and as the ratio of the prepolymer in the entire system gradually increases, the photocuring speed of the aqueous UV ink is greatly reduced, when the content of the prepolymer is higher, the content of reactive diluents and photoinitiators in the system is relatively low, if the ratio of the photoinitiator in the entire system is too low, the energy radiated by ultraviolet light cannot be fully utilized, and the number of active free radicals generated by the decomposition of the photoinitiator cannot meet the amount required in the system, so that the speed of the aqueous UV ink during curing is slow.
FIG. 5 is a diagram showing the effect of the aqueous acrylic acid prepolymer on the abrasion resistance of the aqueous UV ink, and it can be seen from the diagram that as the content of the prepolymer in the whole ink system increases, the abrasion resistance of the ink film decreases continuously, and the proportion of the prepolymer to other components in the aqueous UV ink decreases relatively, but the amount of double bonds contained in the prepolymer itself is small, so that the content of the double bonds in the whole system is insufficient, and the strength of a cross-linked network structure formed when the ink is cured on a carrier is insufficient, so that the abrasion resistance of the ink film decreases accordingly.
FIG. 6 is a diagram showing the effect of the aqueous reactive diluent on the curing time of the aqueous UV ink, and it can be seen from the diagram that as the proportion of the reactive diluent in the aqueous UV ink increases gradually, the photo-curing time of the aqueous UV ink is shortened, because the reactive diluent adopted in the invention is the laboratory-synthesized ethylene diamine tetra (glycidyl methacrylate) and has the dilution effect, the viscosity of the aqueous UV ink system is reduced, and the molecular movement capability in the ink is greatly improved.
FIG. 7 is a diagram showing the effect of an aqueous reactive diluent on the abrasion resistance of an aqueous UV ink, and it can be seen from the diagram that as the content of the aqueous UV ink increases, the abrasion resistance of a cured coating film of the ink undergoes a process of gradually increasing and then gradually decreasing, because the reactive diluent used in the present invention is ethylene diamine tetra glycidyl methacrylate, theoretically, one small molecule of the reactive diluent has four double bonds, and thus the double bond content in the whole aqueous UV ink system increases, which is beneficial to the ink film to form a compact cross-linked network structure, and improves the abrasion resistance of the ink film; however, when the proportion of the reactive diluent in the aqueous UV ink is increased, the abrasion resistance of the ink film starts to decrease, and this is caused mainly by the fact that the double bond content is too large, and the double bonds that do not participate in the reaction are accumulated on the surface of the ink film, resulting in a decrease in the abrasion resistance of the ink film.
Example 1
A preparation method of low-viscosity water-based UV ink comprises the following steps:
weighing styrene and acrylic acid, wherein the molar ratio of the styrene to the acrylic acid is 1:1, adding sodium bisulfite as a catalyst, wherein the content of the sodium bisulfite accounts for 3% of the total mass of the styrene and the acrylic acid, the reaction temperature is 60 ℃, and reacting for 3 hours to obtain a styrene acrylic acid copolymer;
adding hydroxyethyl methacrylate into the styrene acrylic copolymer, wherein the molar ratio of the hydroxyethyl methacrylate to acrylic acid is 1:1, adding triethylamine serving as a catalyst, wherein the triethylamine accounts for 3% of the total mass of the styrene acrylic copolymer and the hydroxyethyl methacrylate, the reaction temperature is 55 ℃, and reacting for 24 hours to obtain a water-based acrylic prepolymer;
weighing ethylenediamine and glycidyl methacrylate, wherein the molar ratio of the ethylenediamine to the glycidyl methacrylate is 1:4, uniformly stirring, and reacting at room temperature for 6 hours to obtain an aqueous reactive diluent;
adding 30% of aqueous acrylic prepolymer and 50% of aqueous reactive diluent into 10% of solvent, uniformly mixing, placing in a magnetic stirrer, and stirring, wherein the reaction temperature is 60 ℃, the reaction time is 0.5h, and the rotating speed is 500r/min, so as to obtain a mixed solution;
adding 5% of methyl orange, 3% of defoaming agent and 2% of trimethyl benzoyl diphenyl phosphorus oxide into the mixed solution obtained in the step 3, continuously stirring, wherein the reaction temperature is 40 ℃, the reaction time is 2 hours, and the rotating speed is 300r/min, so as to obtain the water-based UV ink;
and (4) uniformly coating the water-based UV ink prepared in the step (4) on the surface of the coated paper, and placing the coated paper under an LED type UV surface light source controller for irradiating for 0.5s to enable the water-based UV ink to be cured.
Example 2
A preparation method of low-viscosity water-based UV ink comprises the following steps:
weighing styrene and acrylic acid, wherein the molar ratio of the styrene to the acrylic acid is 1:3, adding sodium bisulfite as a catalyst, wherein the content of the sodium bisulfite accounts for 5% of the total mass of the styrene and the acrylic acid, reacting at 65 ℃ for 2h to obtain a styrene acrylic acid copolymer;
adding hydroxyethyl methacrylate into the styrene acrylic copolymer, wherein the molar ratio of the hydroxyethyl methacrylate to acrylic acid is 1:2, adding triethylamine serving as a catalyst, wherein the triethylamine accounts for 5% of the total mass of the styrene acrylic copolymer and the hydroxyethyl methacrylate, the reaction temperature is 60 ℃, and reacting for 20 hours to obtain a water-based acrylic prepolymer;
weighing ethylenediamine and glycidyl methacrylate, wherein the molar ratio of the ethylenediamine to the glycidyl methacrylate is 1:6, uniformly stirring, and reacting at room temperature for 5.5 hours to obtain an aqueous reactive diluent;
adding 40% of aqueous acrylic prepolymer and 35% of aqueous reactive diluent into 10% of solvent, uniformly mixing, placing in a magnetic stirrer, and stirring, wherein the reaction temperature is 70 ℃, the reaction time is 1h, and the rotating speed is 800r/min, so as to obtain a mixed solution;
adding 10% of methyl orange, 4% of defoaming agent and 1% of 2-isopropyl thioxanthone into the mixed solution obtained in the step 3, and continuously stirring, wherein the reaction temperature is 50 ℃, the reaction time is 1.5h, and the rotating speed is 500r/min to obtain the water-based UV ink;
and 5, curing:
and (4) uniformly coating the water-based UV ink prepared in the step (4) on the surface of the coated paper, and placing the coated paper under an LED type UV surface light source controller for irradiating for 1.2s to enable the water-based UV ink to be cured.
Example 3
A preparation method of low-viscosity water-based UV ink comprises the following steps:
weighing styrene and acrylic acid, wherein the molar ratio of the styrene to the acrylic acid is 1:2, adding sodium bisulfite as a catalyst, wherein the content of the sodium bisulfite accounts for 10% of the total mass of the styrene and the acrylic acid, reacting at 55 ℃ for 2.5h to obtain a styrene acrylic acid copolymer;
adding hydroxyethyl methacrylate into the styrene acrylic copolymer, wherein the molar ratio of the hydroxyethyl methacrylate to acrylic acid is 1:2, adding triethylamine serving as a catalyst, wherein the triethylamine accounts for 10% of the total mass of the styrene acrylic copolymer and the hydroxyethyl methacrylate, the reaction temperature is 50 ℃, and reacting for 22 hours to obtain a water-based acrylic prepolymer;
weighing ethylenediamine and glycidyl methacrylate, wherein the molar ratio of the ethylenediamine to the glycidyl methacrylate is 1:5, uniformly stirring, and reacting at room temperature for 6.5 hours to obtain an aqueous reactive diluent;
adding 50% of aqueous acrylic prepolymer and 20% of aqueous reactive diluent into 20% of solvent, uniformly mixing, placing in a magnetic stirrer, and stirring, wherein the reaction temperature is 80 ℃, the reaction time is 0.6h, and the rotating speed is 700r/min, so as to obtain a mixed solution;
adding 6% of methyl orange, 3% of defoaming agent and 1% of 2-isopropyl thioxanthone into the mixed solution obtained in the step 3, and continuously stirring, wherein the reaction temperature is 60 ℃, the reaction time is 1.5h, and the rotating speed is 400r/min to obtain the water-based UV ink;
and 5, curing:
and (4) uniformly coating the water-based UV ink prepared in the step (4) on the surface of the coated paper, and placing the coated paper under an LED type UV surface light source controller for irradiating for 1s to enable the water-based UV ink to be cured.
Example 4
A preparation method of low-viscosity water-based UV ink comprises the following steps:
weighing styrene and acrylic acid, wherein the molar ratio of the styrene to the acrylic acid is 1:1, adding sodium bisulfite as a catalyst, wherein the content of the sodium bisulfite accounts for 8 percent of the total mass of the styrene and the acrylic acid, the reaction temperature is 57 ℃, and reacting for 2 hours to obtain a styrene acrylic acid copolymer;
adding hydroxyethyl methacrylate into the styrene acrylic copolymer, wherein the molar ratio of the hydroxyethyl methacrylate to acrylic acid is 1:2, adding triethylamine serving as a catalyst, wherein the triethylamine accounts for 8% of the total mass of the styrene acrylic copolymer and the hydroxyethyl methacrylate, the reaction temperature is 52 ℃, and reacting for 21 hours to obtain a water-based acrylic prepolymer;
weighing ethylenediamine and glycidyl methacrylate, wherein the molar ratio of the ethylenediamine to the glycidyl methacrylate is 1:5, uniformly stirring, and reacting at room temperature for 6 hours to obtain an aqueous reactive diluent;
adding 35% of aqueous acrylic acid prepolymer and 22% of aqueous reactive diluent into 30% of solvent, uniformly mixing, placing in a magnetic stirrer, and stirring, wherein the reaction temperature is 75 ℃, the reaction time is 0.5h, and the rotating speed is 600r/min, so as to obtain a mixed solution;
adding 7% of methyl orange, 2% of defoaming agent and 4% of photoinitiator into the mixed solution obtained in the step 3, wherein the mixture comprises 2% of 2-hydroxy-2-methyl propiophenone and 2% of 2-isopropyl thioxanthone, continuously stirring, and obtaining the water-based UV ink, wherein the reaction temperature is 50 ℃, the reaction time is 1h, and the rotation speed is 450 r/min;
and 5, curing:
and (4) uniformly coating the water-based UV ink prepared in the step (4) on the surface of the coated paper, and placing the coated paper under an LED type UV surface light source controller for irradiating for 1.5s to enable the water-based UV ink to be cured.
Example 5
A preparation method of low-viscosity water-based UV ink comprises the following steps:
weighing styrene and acrylic acid, wherein the molar ratio of the styrene to the acrylic acid is 1:1, adding sodium bisulfite as a catalyst, wherein the content of the sodium bisulfite accounts for 4% of the total mass of the styrene and the acrylic acid, reacting at the temperature of 60 ℃ for 3 hours to obtain a styrene acrylic acid copolymer;
adding hydroxyethyl methacrylate into the styrene acrylic copolymer, wherein the molar ratio of the hydroxyethyl methacrylate to acrylic acid is 1:2, adding triethylamine serving as a catalyst, wherein the triethylamine accounts for 4% of the total mass of the styrene acrylic copolymer and the hydroxyethyl methacrylate, the reaction temperature is 60 ℃, and reacting for 24 hours to obtain a water-based acrylic prepolymer;
weighing ethylenediamine and glycidyl methacrylate, wherein the molar ratio of the ethylenediamine to the glycidyl methacrylate is 1:5, uniformly stirring, and reacting at room temperature for 6.5 hours to obtain a water-based reactive diluent;
adding 40% of waterborne acrylic prepolymer and 25% of waterborne reactive diluent into 17% of solvent, uniformly mixing, placing in a magnetic stirrer, and stirring, wherein the reaction temperature is 65 ℃, the reaction time is 0.7h, and the rotating speed is 800r/min, so as to obtain a mixed solution;
adding 10% of methyl orange, 5% of defoaming agent and 3% of photoinitiator into the mixed solution obtained in the step 3, wherein the photoinitiator comprises 1% of trimethyl benzoyl diphenyl phosphorus oxide, 1% of 2-hydroxy-2-methyl propiophenone and 1% of 2-isopropyl thioxanthone, continuously stirring, and obtaining the water-based UV ink, wherein the reaction temperature is 60 ℃, the reaction time is 2 hours, and the rotating speed is 400 r/min;
and 5, curing:
and (4) uniformly coating the water-based UV ink prepared in the step (4) on the surface of the coated paper, and placing the coated paper under an LED type UV surface light source controller for irradiating for 2s to enable the water-based UV ink to be cured.
The invention prepares the aqueous acrylic acid prepolymer by styrene and acrylic acid, the styrene can effectively improve the mechanical strength of the ink film, the acrylic acid and HEMA are beneficial to improving the water solubility of the ink, the obtained aqueous active diluent and the aqueous acrylic acid prepolymer are fully crosslinked, the use amount of the aqueous acrylic acid prepolymer is obviously reduced, and the photocuring time and the mechanical strength are effectively improved because the hydroxyethyl methacrylate simultaneously has double bonds and aldehyde groups.
Claims (7)
1. The low-viscosity water-based UV ink is characterized by comprising the following components in percentage by mass: 30-50% of water-based acrylic prepolymer, 20-50% of water-based reactive diluent, 10-30% of solvent, 1-4% of photoinitiator, 5-10% of pigment and 2-5% of auxiliary agent, wherein the sum of the mass percentages of the components is 100%;
a preparation method of low-viscosity water-based UV ink comprises the following steps:
step 1, preparation of aqueous acrylic prepolymer:
weighing styrene and acrylic acid, adding sodium bisulfite as a catalyst, reacting for a period of time to obtain a styrene acrylic acid copolymer, adding hydroxyethyl methacrylate, adding triethylamine as a catalyst, and reacting for a period of time to obtain a water-based acrylic acid prepolymer;
in the step 1, the molar ratio of styrene to acrylic acid is 1: 1-2-3, the molar ratio of hydroxyethyl methacrylate to acrylic acid is 1: 1-2, the content of sodium bisulfite accounts for 3-10% of the total mass of styrene and acrylic acid, and the content of triethylamine accounts for 3-10% of the total mass of styrene-acrylic acid copolymer and hydroxyethyl methacrylate;
in the step 1, the reaction time of styrene and acrylic acid is 2-3 h, the reaction temperature is 55-65 ℃, the reaction time of styrene acrylic copolymer and hydroxyethyl methacrylate is 20-24 h, and the reaction temperature is 50-60 ℃;
step 2, preparing an aqueous reactive diluent:
weighing ethylenediamine and glycidyl methacrylate, uniformly stirring, and reacting at room temperature for a period of time to obtain a water-based reactive diluent;
step 3, preparing a mixed solution:
adding the aqueous acrylic prepolymer and the aqueous reactive diluent into a solvent according to a certain proportion, uniformly mixing, placing the mixture into a magnetic stirrer for stirring, and stirring for a period of time to obtain a mixed solution;
step 4, preparing water-based UV ink:
adding the pigment, the auxiliary agent and the photoinitiator into the mixed solution obtained in the step 3 according to a ratio, and continuously stirring to obtain the water-based UV ink;
and 5, curing:
and (4) uniformly coating the water-based UV ink prepared in the step (4) on the surface of the coated paper, and placing the coated paper under an LED type UV surface light source controller for irradiation for 0.5-2 s to enable the water-based UV ink to be cured.
2. The method for preparing the low-viscosity aqueous UV ink as claimed in claim 1, wherein in the step 2, the molar ratio of the ethylenediamine to the glycidyl methacrylate is 1: 4-6.
3. The method for preparing the low-viscosity aqueous UV ink as claimed in claim 1, wherein in the step 2, the reaction time of the ethylenediamine and the glycidyl methacrylate is 5.5-6.5 h.
4. The method for preparing the low-viscosity aqueous UV ink according to claim 1, wherein in the step 3, the solvent is a mixed solution of water, ethanol and THF, and the molar ratio of the water, the ethanol and the THF is 6:3: 1.
5. The method for preparing the low-viscosity aqueous UV ink as claimed in claim 1, wherein in the step 3, the reaction temperature is 60-80 ℃, the reaction time is 0.5-1 h, and the rotation speed is 500-800 r/min.
6. The method for preparing a low viscosity aqueous UV ink according to claim 1, wherein in the step 4, the photoinitiator is any one or a mixture of 2-isopropyl thioxanthone, trimethyl benzoyl diphenyl phosphorus oxide and 2-hydroxy-2-methyl phenyl propanone, the pigment is methyl orange, and the auxiliary agent is an antifoaming agent.
7. The method for preparing the low-viscosity aqueous UV ink as claimed in claim 1, wherein in the step 4, the reaction temperature is 40-60 ℃, the reaction time is 1-2 h, and the rotation speed is 300-500 r/min.
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| CN110615865A (en) * | 2019-11-05 | 2019-12-27 | 江苏睿浦树脂科技有限公司 | Resin for high-temperature-resistant low-yellowing solder-resistant UV (ultraviolet) ink and preparation method thereof |
| CN111234596A (en) * | 2020-03-04 | 2020-06-05 | 西安理工大学 | Self-cleaning ultraviolet light curing water-based ink and preparation method thereof |
| CN111793388B (en) * | 2020-06-08 | 2022-08-12 | 平江县彩美油墨有限公司 | Fast-curing UV (ultraviolet) water-based conductive ink and preparation method thereof |
| CN111808472B (en) * | 2020-06-18 | 2023-04-11 | 雅昌文化(集团)有限公司 | Fast-curing UV (ultraviolet) water-based magnetic ink and preparation method thereof |
| KR102495843B1 (en) * | 2020-08-28 | 2023-02-03 | 한국화학연구원 | Novel compound, epoxy resin composition containing the same and cured product thereof |
| CN113493627B (en) * | 2021-06-22 | 2023-05-30 | 湖北中北博睿科技有限公司 | Water-alcohol UV ink capable of realizing rapid photo-curing and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2107980A1 (en) * | 1992-10-07 | 1994-04-08 | Richard J. Treleaven | Jet ink for offset printing master |
| CN1366211A (en) * | 2001-01-19 | 2002-08-28 | 可隆株式会社 | Printing ink composition used for welding protective layer |
| CN105594308A (en) * | 2013-09-30 | 2016-05-18 | 太阳油墨制造株式会社 | Curable composition for printed circuit board, and cured coating film and printed circuit board incorporating same |
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|---|---|---|---|---|
| JP2000010268A (en) * | 1998-04-21 | 2000-01-14 | Toray Ind Inc | Photosensitive paste, production of plasma display using the same, and member for plasma display |
-
2019
- 2019-07-23 CN CN201910666707.9A patent/CN110387163B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2107980A1 (en) * | 1992-10-07 | 1994-04-08 | Richard J. Treleaven | Jet ink for offset printing master |
| CN1366211A (en) * | 2001-01-19 | 2002-08-28 | 可隆株式会社 | Printing ink composition used for welding protective layer |
| CN105594308A (en) * | 2013-09-30 | 2016-05-18 | 太阳油墨制造株式会社 | Curable composition for printed circuit board, and cured coating film and printed circuit board incorporating same |
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