CN112194929B - High-viscosity UV refractive ink for screen printing - Google Patents
High-viscosity UV refractive ink for screen printing Download PDFInfo
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- CN112194929B CN112194929B CN202011115239.5A CN202011115239A CN112194929B CN 112194929 B CN112194929 B CN 112194929B CN 202011115239 A CN202011115239 A CN 202011115239A CN 112194929 B CN112194929 B CN 112194929B
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- C—CHEMISTRY; METALLURGY
- 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
- C09D11/101—Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
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- C—CHEMISTRY; METALLURGY
- 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
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
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- C—CHEMISTRY; METALLURGY
- 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
- C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
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Abstract
The invention discloses high-viscosity UV refractive ink for screen printing, which comprises the following components in parts by weight: 35-75 parts of ultraviolet curing resin; 15-25 parts of a reactive diluent; 3-8 parts of a photoinitiator; 2-6 parts of a filler; 1-3 parts of an auxiliary agent; the ultraviolet curing resin is prepared from epoxy acrylic resin and multifunctional urethane acrylate, wherein the mass ratio of the epoxy acrylic resin to the multifunctional urethane acrylate is 1. The printing surface made of the high-viscosity UV refraction ink for silk-screen printing can give a real feeling to people from different angles and positions, and the patterns molded by the printing surface change along with different appreciation positions and are rich in layering.
Description
The application is a divisional application, the application number of the original application is 2017100729848, the application date is 2017, no. 02/10, and the patent names of the invention are as follows: a UV refraction ink for silk-screen printing and a preparation method thereof.
Technical Field
The invention belongs to the field of printing, and particularly relates to high-viscosity UV refractive ink for screen printing.
Background
UV ink refers to ink that is formed into a film and dried by polymerizing monomers in the ink vehicle into polymers using ultraviolet light of different wavelengths and capabilities under ultraviolet irradiation. The UV ink has the characteristics of no volatile solvent, no odor, no stimulation, high curing speed, tough cured film, solvent resistance and the like, and is widely applied to the printing field. The UV ink is various, and commonly used ink comprises UV ice flower ink, UV foaming ink, UV crystal ink, UV expansion ink, UV metal ink, UV refraction ink, UV wrinkle ink, UV fragrance ink, UV elastic ink and the like, wherein the UV refraction ink is the research focus in the field of high-grade printing in recent years.
The UV refraction ink is mainly used for refraction printing, the application range of the UV refraction ink comprises mirror printing materials such as various gold and silver card paper, PEI films, PVC base materials and the like, and the UV refraction ink can be used for producing high-grade packing boxes, decorative pictures, high-grade signs and the like. The UV refraction ink has strong refraction effect after being cured by ultraviolet light. UV refraction printing ink adopts the half tone through special preparation, is under construction in all kinds of gold and silver card paper and mirror surface paper in addition, and after UV illumination solidification, the printing ink film forming has obvious refraction effect to it is dazzler and produces the sensation of movement to decorate the picture and text, and bright-colored dazzling, lifelike moving, makes the packing outward appearance dazzling more.
CN101560348B discloses an ultraviolet light curing offset printing ink and a preparation method thereof, which is prepared by 25.0-50.0% of polyfunctional polyester acrylic resin or polyfunctional chlorinated polyester acrylate, 0.0-15.0% of epoxy acrylate oligomer, 0.0-20.0% of polyfunctional urethane acrylate, 0.0-15.0% of bifunctional or polyfunctional acrylic monomer, 0.0-20.0% of grinding resin, 2.0-10.0% of nano silicon dioxide improved polyether acrylate, 0.0-5.0% of adhesion promoter, 3.0-5.0% of photoinitiator, 0.1-2.0% of polymerization inhibitor, 0.0-10.0% of filler, 16.0-55.0% of pigment or dye and 0.2-5.0% of auxiliary agent. However, the ultraviolet light curing offset printing ink has complex components and complex preparation process, and is difficult to simply control.
CN101851466B discloses an antistatic wear-resistant UV coating and a preparation method thereof, and belongs to the field of materials. The antistatic wear-resistant UV coating comprises the following components in percentage by mass: 5% -35% of polyfunctional urethane acrylate; 15% -45% of epoxy acrylate; 10% -40% of reactive diluent; 2% -12% of a photoinitiator; 0.5 to 3 percent of other auxiliary agents; 5 to 25 percent of nano conductive attapulgite powder; 0.05 to 0.5 percent of silane coupling agent. However, the antistatic wear-resistant UV coating is mainly used for solving the static problem.
However, the viscosity of the existing commercially available UV refractive ink is too low, usually 1000 to 2000cps/25 ℃, so that leveling is too fast during printing to satisfy the effect that the printing paint film exhibits cubic effect, and therefore, it is necessary to develop a refractive ink having a viscosity appropriate so that leveling is slow and the printing effect is good.
Disclosure of Invention
In view of the above problems, the present inventors have conducted extensive research and analysis on existing UV refractive ink, and developed a high viscosity UV refractive ink for screen printing, which has a high viscosity ranging from 18000 to 32000cps/25 ℃, a slow leveling, and good printing adaptability.
In order to achieve the aim, the invention provides high-viscosity UV refractive ink for screen printing, which comprises the following components in parts by weight:
35-75 parts of ultraviolet curing resin
15-25 parts of reactive diluent
3-8 parts of photoinitiator
2-6 parts of filler
1-3 parts of an auxiliary agent;
the ultraviolet curing resin consists of epoxy acrylic resin and multifunctional polyurethane acrylate, and the mass ratio of the epoxy acrylic resin to the multifunctional polyurethane acrylate is 1.
The UV refraction ink disclosed by the invention has the effects of high viscosity, slow leveling and good printing adaptability by optimally designing the formula by adjusting the proportion and the amount of the epoxy acrylic resin and the multifunctional polyurethane acrylate in the ultraviolet curing resin. In addition, after the UV refraction ink is matched with 300-420 meshes for silk-screen printing to form a film, the glossiness of the paint film reaches over 90 percent, when the printed surface is observed from different angles and positions, a real feeling can be brought to people, and the patterns formed by the UV refraction ink change along with different appreciation positions and are rich in layering.
Preferably, in the above high viscosity UV refractive ink for screen printing, the mass ratio of the epoxy acrylic resin and the polyfunctional urethane acrylate is 1.
Preferably, in the above high viscosity UV refractile ink for screen printing, the epoxy value of the epoxy acrylic resin is 0.010 to 0.025 eq/100 g, and if the epoxy value of the epoxy acrylic resin is too high, the curing speed of the UV refractile ink of the present invention becomes slow, the toughness of the formed film is poor and the ink is easily exploded, and if the epoxy value of the epoxy acrylic resin is too low, the UV refractile ink of the present invention is obtained.
Preferably, in the above high viscosity UV refractive ink for screen printing, the weight average molecular weight of the epoxy acrylic resin is 450 to 1800, preferably 500 to 1500, more preferably 500 to 800, and if the molecular weight is too high, the viscosity of the UV refractive ink of the present invention is too high, and if the molecular weight is too high, the viscosity of the UV refractive ink of the present invention is too low, and leveling is too fast, so that the printed surface cannot exhibit good cubic effect.
Preferably, in the above high viscosity UV refractive ink for screen printing, the multifunctional urethane acrylate has a weight average molecular weight of 8000 to 12000, and the reason for selecting the molecular weight range thereof coincides with the reason for selecting the molecular weight range of the epoxy acrylic resin.
The epoxy acrylic resin and the multifunctional polyurethane acrylate have good curing rate, chemical resistance and hardness.
Preferably, in the above high viscosity UV refractive ink for screen printing, the reactive diluent is a reactive diluent conventional in the art, preferably one or more of neopentylglycol diacrylate propoxylate (NPG 2 PODA) and trimethylolpropane triacrylate ethoxylate (TMP 3 EOTA).
Preferably, in the above high viscosity UV refractive ink for screen printing, the photoinitiator is a conventional photoinitiator, preferably one or more of Benzophenone (BP), 1-hydroxy-cyclohexyl-phenyl ketone, and ethyl 2,4, 6-trimethylbenzoylphosphonate.
More preferably, in the above high viscosity UV refractive ink for screen printing, the photoinitiator consists of Benzophenone (BP), 1-hydroxy-cyclohexyl-phenyl ketone and ethyl 2,4, 6-trimethylbenzoylphosphonate in a weight ratio of (3-8): (2-5) 1, preferably (4-7): (3-4):1. By adjusting the amount of the initiator, the curing speed of the ultraviolet curing resin is controlled, so that the effect of the printed finished product is more three-dimensional and more vivid, namely, different effects are achieved at different appreciation positions of the printed pattern.
Preferably, in the above high viscosity UV refractive ink for screen printing, the filler is fumed silica.
Preferably, in the above-mentioned high viscosity UV refractive ink for screen printing, the auxiliaries are those commonly used in the art, such as antifoaming agents and thixotropic agents.
More preferably, in the above high viscosity UV refractive ink for screen printing, the antifoaming agent is an antifoaming agent commonly used in the art, such as Defom5400 of the courtey corporation and EFKA-2022 of the eiffe card (EFKA) adjuvant corporation, BYK-050, BYK-051, BYK-052 and/or BYK-055 of the BYK chemical corporation, germany.
More preferably, in the above high viscosity UV refractive ink for screen printing, the thixotropic agent is a thixotropic agent commonly used in the art, such as BYK-410, BYK-D410, BYK-411, BYK-E411, BYK-420, BYK-D420, BYK-425, BYK-428, BYK-430, BYK-431, BYK-R605 and/or BYK-R606 of BYK chemical company, germany.
Preferably, in the above high viscosity UV refractive ink for screen printing, the fineness of the mixture of the UV refractive ink is 5 μm or less.
Preferably, in the above high viscosity UV refractive ink for screen printing, the viscosity of the UV refractive ink is 18000 to 32000cps/25 ℃, more preferably 20000 to 32000cps/25 ℃, most preferably 25000 to 32000cps/25 ℃, higher than that of the UV refractive ink currently commercially available, so that it is slowly leveled, so that the printed product has a stronger stereoscopic impression.
In addition, the invention also provides a preparation method of the high-viscosity UV refractive ink for screen printing, which sequentially comprises the following steps:
(1) Mixing and uniformly stirring the ultraviolet curing resin, the reactive diluent, the photoinitiator, the filler and the auxiliary agent in proportion;
(2) Grinding the mixture obtained in the step (1) until the fineness of the mixture is less than or equal to 5 mu m to obtain the high-viscosity UV refractive ink for screen printing.
Preferably, in the above preparation method, the viscosity of the high viscosity UV refractive ink for screen printing according to the present invention obtained in the step (2) is 18000 to 32000cps/25 ℃.
Preferably, in the above production method, the apparatus used for the grinding in the step (2) is a three-roll machine.
In the invention, the high-viscosity UV refractive ink for screen printing is obtained in a crystal jelly shape.
The preparation method is simple and easy to operate, and the conditions are easy to control, so that large-scale industrial production can be realized.
Compared with the prior art, the invention has the following beneficial effects and advantages:
(1) According to the invention, the quantity and proportion of epoxy acrylic resin and multifunctional urethane acrylate in the ultraviolet curing resin are adjusted by using the high-viscosity UV refraction ink for silk-screen printing, so that the viscosity of the UV refraction ink is higher than that of the commercially available refraction ink, and the advantage of high curing speed of the epoxy acrylic resin and the multifunctional urethane acrylate is combined, so that the printed finished product has strong stereoscopic impression and high brightness, and the refractive index of the high-viscosity UV refraction ink for silk-screen printing after film forming is between 1.355 and 1.525, so that the high-viscosity UV refraction ink has a strong refraction effect;
(2) The high-viscosity UV refraction ink for silk-screen printing has the advantages of simple preparation process, convenient operation, low cost, continuous production realization and large-scale industrial production.
Detailed Description
In order to make the objects and advantages of the invention more concise, the invention will be described in more detail with reference to the following examples, to which it is in no way limited. The following examples are merely preferred examples of the present invention and are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. It should be understood that any modifications, equivalents, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
In the present invention, the epoxy value of the epoxy acrylic resin is a value measured by the hydrochloric acid-acetone method, and the fineness is measured by the paint fineness measurement method defined in GB/T1724-1979.
Preparation examples
Preparation of example 1
15kg of propoxylated neopentyl glycol diacrylate NPG2PODA was added to 35kg of a mixed resin composed of an epoxy acrylic resin and a polyfunctional urethane acrylate, wherein the epoxy value of the epoxy acrylic resin in the mixed resin was 0.015 equivalent/100 g, the weight-average molecular weight was 720, the weight-average molecular weight of the polyfunctional urethane acrylate was 9000 and the mass ratio of the two was 1. Then 3kg of photoinitiator benzophenone BP, 2kg of fumed silica filler, 0.5kg of defoaming agent BYK-052 and 0.5kg of thixotropic agent BYK-410 are added, and then the mixture is fully stirred uniformly. And then grinding the mixture by using a three-roller machine until the fineness of the mixture is 4 mu m to obtain the UV refractive ink which is in a crystal jelly shape.
Preparation of example 2
15kg of propoxylated neopentyl glycol diacrylate NPG2PODA was added to 35kg of a mixed resin composed of an epoxy acrylic resin and a polyfunctional urethane acrylate, wherein the epoxy value of the epoxy acrylic resin in the mixed resin was 0.020 equivalent/100 g, the weight-average molecular weight was 660, the weight-average molecular weight of the polyfunctional urethane acrylate was 10000 and the mass ratio of the two was 1. Then 3kg of photoinitiator (consisting of 2kg of benzophenone BP and 1kg of 1-hydroxy-cyclohexyl-phenyl-methanone), 2kg of fumed silica filler, 0.5kg of defoamer BYK-052 and 0.5kg of thixotropic agent BYK-410 were added, followed by thorough and uniform stirring. And then grinding the mixture by using a three-roller machine until the fineness of the mixture is 4 mu m to obtain the UV refractive ink which is in a crystal jelly shape.
Preparation of example 3
15kg of propoxylated neopentyl glycol diacrylate NPG2PODA was added to 35kg of a mixed resin consisting of an epoxy acrylic resin and a multifunctional urethane acrylate, wherein the epoxy value of the epoxy acrylic resin in the mixed resin was 0.025 eq/100 g, the weight-average molecular weight was 620, the weight-average molecular weight of the multifunctional urethane acrylate was 12000 and the mass ratio of the two was 1. Then 3kg of photoinitiator (consisting of 2kg of benzophenone BP and 1kg of 1-hydroxy-cyclohexyl-phenyl-methanone), 2kg of fumed silica filler, 0.5kg of defoamer BYK-052 and 0.5kg of thixotropic agent BYK-410 were added, followed by sufficient stirring. And then grinding the mixture by using a three-roller machine until the fineness of the mixture is 4 mu m to obtain the UV refractive ink which is in a crystal jelly shape.
Preparation of example 4
15kg of propoxylated neopentyl glycol diacrylate NPG2PODA and 10kg of ethoxylated trimethylolpropane triacrylate TMP3EOTA were added to 75kg of a mixed resin composed of an epoxy acrylic resin having an epoxy value of 0.025 eq/100 g and a weight average molecular weight of 620 and a polyfunctional urethane acrylate having a weight average molecular weight of 12000 in a weight ratio of 1, and a polyfunctional urethane acrylate having an epoxy value of 0.025 eq/100 g. Then 8kg of a photoinitiator (consisting of 4kg of benzophenone BP, 3kg of 1-hydroxy-cyclohexyl-phenyl-methanone and 1kg of ethyl 2,4, 6-trimethylbenzoylphosphonate), 6kg of fumed silica filler, 1.5kg of defoamer BYK-052 and 1.5kg of thixotropic agent BYK-410 were added, followed by thorough stirring. Then the mixture is ground by a three-roller machine until the fineness of the mixture is 4 mu m, thus obtaining the UV refractive ink which is in the shape of crystal jelly.
Preparation of example 5
25kg of propoxylated neopentyl glycol diacrylate NPG2PODA was added to 65kg of a mixed resin composed of an epoxy acrylic resin and a multifunctional urethane acrylate, wherein the epoxy value of the epoxy acrylic resin in the mixed resin was 0.025 eq/100 g, the weight-average molecular weight was 620, the weight-average molecular weight of the multifunctional urethane acrylate was 12000 and the mass ratio of the two was 1. Then 6kg of photoinitiator (consisting of 3.5kg of benzophenone BP, 2kg of 1-hydroxy-cyclohexyl-phenyl ketone and 10.5g of 2,4, 6-trimethylbenzoylphosphonic acid ethyl ester), 5kg of fumed silica filler, 1kg of defoamer BYK-052 and 1kg of thixotropic agent BYK-410 were added, followed by sufficient stirring. And then grinding the mixture by using a three-roller machine until the fineness of the mixture is 4 mu m to obtain the UVUV refractive ink which is in the shape of crystal jelly.
Comparative examples
Comparative example 1
15kg of propoxylated neopentyl glycol diacrylate NPG2PODA was added to 35kg of a mixed resin consisting of an epoxy acrylic resin and a multifunctional urethane acrylate, wherein the epoxy value of the epoxy acrylic resin in the mixed resin was 0.015 equivalent/100 g, the weight average molecular weight was 720, the weight average molecular weight of the multifunctional urethane acrylate was 9000 and the mass ratio of the two was 1. Then 3kg of photoinitiator (consisting of 2kg of benzophenone BP and 1kg of 1-hydroxy-cyclohexyl-phenyl-methanone), 2kg of fumed silica filler, 0.5kg of defoamer BYK-052 and 0.5kg of thixotropic agent BYK-410 were added, followed by thorough and uniform stirring. And then grinding the mixture by using a three-roller machine until the fineness of the mixture is 4 mu m to obtain the UV refractive ink.
Comparative example 2
15kg of propoxylated neopentyl glycol diacrylate NPG2PODA was added to 35kg of a mixed resin composed of an epoxy acrylic resin and a polyfunctional urethane acrylate, wherein the epoxy value of the epoxy acrylic resin in the mixed resin was 0.015 equivalent/100 g, the weight-average molecular weight was 720, the weight-average molecular weight of the polyfunctional urethane acrylate was 9000 and the mass ratio of the two was 1.5. Then 3kg of photoinitiator (consisting of 2kg of benzophenone BP and 1kg of 1-hydroxy-cyclohexyl-phenyl-methanone), 2kg of fumed silica filler, 0.5kg of defoamer BYK-052 and 0.5kg of thixotropic agent BYK-410 were added, followed by thorough and uniform stirring. And then grinding the mixture by using a three-roller machine until the fineness of the mixture is 4 mu m to obtain the UV refractive ink.
Comparative example 3
15kg of propoxylated neopentyl glycol diacrylate NPG2PODA were added to 35kg of an epoxy acrylic resin having an epoxy value of 0.015 equivalents/100 g and a weight average molecular weight of 720. Then 3kg of photoinitiator (consisting of 2kg of benzophenone BP and 1kg of 1-hydroxy-cyclohexyl-phenyl-methanone), 2kg of fumed silica filler, 0.5kg of defoamer BYK-052 and 0.5kg of thixotropic agent BYK-410 were added, followed by thorough and uniform stirring. And then grinding the mixture by using a three-roller machine until the fineness of the mixture is 4 mu m to obtain the UV refractive ink.
Comparative example 4
15kg of propoxylated neopentyl glycol diacrylate NPG2PODA were added to 35kg of a multifunctional urethane acrylate having a weight-average molecular weight of 9000. Then 3kg of photoinitiator (consisting of 2kg of benzophenone BP and 1kg of 1-hydroxy-cyclohexyl-phenyl-methanone), 2kg of fumed silica filler, 0.5kg of defoamer BYK-052 and 0.5kg of thixotropic agent BYK-410 were added, followed by thorough and uniform stirring. And then grinding the mixture by using a three-roll mill until the fineness of the mixture is 4 mu m to obtain the UV refraction ink.
Test examples
The UV refractive inks prepared in preparation examples 1 to 5, the UV refractive inks prepared in comparative examples 1 to 4 and commercially available UV refractive inks were screen-printed on the surface of a gold cardboard with a designed refractive texture through a 350-mesh screen, and cured on an ultraviolet curing instrument of 2 kilowatts to obtain a film layer. The properties of the refractive ink and the cured film layer were measured and the results are shown in table 1 below, wherein the test criteria and methods for each property test are as follows:
viscosity: the coating viscosity is measured according to the method for measuring the coating viscosity specified in GB/T1723-1993;
adhesion force: measuring according to the Baige method specified in GB/T9286-1998, wherein the unit is grade, namely 100 square grids of 1mm multiplied by 1mm are drawn, then the square grids are lifted by using a transparent adhesive tape with the model number of 600 produced by American 3M company, and grading is carried out according to the number of the fallen small grids;
hardness: testing according to a pencil hardness testing method specified in GB/T6739-2006;
gloss: measured according to the paint film gloss measurement method specified in GB/T1743-1979;
the refraction effect is as follows: the refractive index is characterized by being measured according to a method for measuring the refractive index of a liquid chemical product specified in GB/T6488-2008.
TABLE 1 Properties of UV refractive inks
| Category item | Viscosity (cps/25 ℃ C.) | Adhesion force | Curing speed(s) | Hardness of | Gloss (%) | Refractive index |
| Preparation of example l | 18590 | 2 | 20 | 2H | 90 | 1.490 |
| Preparation of example 2 | 19873 | 2 | 20 | 2H | 92 | 1.480 |
| Preparation of example 3 | 23360 | 1 | 15 | 3H | 93 | 1.495 |
| Preparation of example 4 | 25768 | 1 | 15 | 3H | 95 | 1.510 |
| Preparation of example 5 | 28694 | 1 | 15 | 3H | 97 | 1.525 |
| Comparative example I | 16231 | 2 | 25 | H | 89 | 1.325 |
| Comparative example 2 | 17985 | 2 | 25 | H | 85 | 1.310 |
| Comparative example 3 | 15320 | 2 | 41 | H | 75 | 1.304 |
| Comparative example 4 | 14678 | 2 | 39 | H | 76 | 1.300 |
| Commercially available UV refractive inks | 1950 | 2 | 25 | H | 86 | 1.335 |
As can be seen from the above table, the UV refractive inks prepared in preparation examples 1 to 5, particularly in preparation examples 3 to 5, according to the present invention have significantly higher viscosity than the UV refractive inks prepared in comparative examples 1 to 4 and commercially available, and the curing rate is significantly increased, so that the finished printed products have a strong cubic effect, and different effects can be seen by viewing the silver cardboard from different angles. In addition, the UV refractive ink prepared in preparation examples 1-5 of the present invention has better adhesion, hardness and gloss than the UV refractive ink prepared in comparative examples 1-2 and the commercially available UV refractive ink, and has strong refractive effect. Therefore, the UV refraction ink disclosed by the invention is reasonable in formula.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and modifications and variations of the present invention are also intended to fall within the scope of the appended claims. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (7)
1. The high-viscosity UV refractive ink for screen printing is characterized by comprising the following components in parts by weight:
35-75 parts of ultraviolet curing resin
15-25 parts of reactive diluent
3-8 parts of photoinitiator
2-6 parts of filler
1-3 parts of an auxiliary agent;
wherein the ultraviolet light curing resin consists of epoxy acrylic resin and multifunctional urethane acrylate, the mass ratio of the epoxy acrylic resin to the multifunctional urethane acrylate is 1.5 or 1.6, the epoxy value of the epoxy acrylic resin is 0.010-0.025 equivalent/100 g, the weight-average molecular weight of the epoxy acrylic resin is 500-800, the weight-average molecular weight of the multifunctional urethane acrylate is 8000-12000, and the auxiliary agent comprises an antifoaming agent and a thixotropic agent;
the high-viscosity UV refraction ink for screen printing is prepared by the following method:
(1) Mixing and uniformly stirring the ultraviolet curing resin, the reactive diluent, the photoinitiator, the filler and the auxiliary agent in proportion;
(2) Grinding the mixture obtained in the step (1) until the fineness of the mixture is less than or equal to 5 mu m, thus obtaining the product.
2. The high viscosity UV refractive ink for screen printing according to claim 1, wherein the reactive diluent is one or more of propoxylated neopentyl glycol diacrylate (NPG 2 PODA) and ethoxylated trimethylol propane triacrylate (TMP 3 EOTA).
3. The high viscosity UV refractive ink for screen printing according to claim 1, wherein the photoinitiator is one or more of Benzophenone (BP), 1-hydroxy-cyclohexyl-phenyl-methanone and ethyl 2,4, 6-trimethylbenzoylphosphonate.
4. The high viscosity UV refractive ink for screen printing according to claim 1, wherein the viscosity of the high viscosity UV refractive ink for screen printing is 18000-32000cps/25 ℃.
5. The high viscosity UV refractive ink for screen printing according to claim 1, wherein the filler is fumed silica.
6. The high viscosity UV refractive ink for screen printing according to claim 1, wherein the defoaming agent is one or a combination of Defom5400, EFKA-2022, BYK-050, BYK-051, BYK-052, BYK-055.
7. The high viscosity UV refractive ink for screen printing according to claim 1, wherein the thixotropic agent is one or a combination of BYK-410, BYK-D410, BYK-411, BYK-E411, BYK-420, BYK-D420, BYK-425, BYK-428, BYK-430, BYK-431, BYK-R605 and BYK-R606.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011115239.5A CN112194929B (en) | 2017-02-10 | 2017-02-10 | High-viscosity UV refractive ink for screen printing |
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| CN202011115239.5A CN112194929B (en) | 2017-02-10 | 2017-02-10 | High-viscosity UV refractive ink for screen printing |
| CN201710072984.8A CN106833109B (en) | 2017-02-10 | 2017-02-10 | UV refraction ink for screen printing and preparation method thereof |
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| CN112194929B true CN112194929B (en) | 2022-11-15 |
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| CN201710072984.8A Active CN106833109B (en) | 2017-02-10 | 2017-02-10 | UV refraction ink for screen printing and preparation method thereof |
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| CN108587308A (en) * | 2018-07-21 | 2018-09-28 | 中山市博海精细化工有限公司 | A kind of silk-screen printing three-in-one special inks of UV and preparation method thereof |
| CN111205700A (en) * | 2020-02-28 | 2020-05-29 | 上海超彩油墨有限公司 | Tin printing screen printing ink based on UV curing |
| CN113174229A (en) * | 2021-03-30 | 2021-07-27 | 江门市久冠松高分子材料有限公司 | UV-LED impression adhesive for glass product surface transfer printing and preparation method thereof |
| CN115197605B (en) * | 2022-06-17 | 2023-07-21 | 佛山市儒林化工有限公司 | Printing ink with wrinkle texture effect and preparation method thereof |
| CN115284762A (en) * | 2022-09-14 | 2022-11-04 | 四川蓝剑金印股份有限公司 | Holographic positioning screen printing wrinkle ink method |
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| CN101717204B (en) * | 2008-10-09 | 2012-02-08 | 西南科技大学 | High refractive index UV-curable rubberized layer for coating optical fiber |
| CN103556801B (en) * | 2013-11-14 | 2017-02-01 | 广东玉兰集团股份有限公司 | Manufacturing process for wallpaper with patterns having manual three-dimensional effect |
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| CN106833109A (en) | 2017-06-13 |
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