CN112724738A - Wood-grain paper ink-jet printing pigment ink and preparation method thereof - Google Patents
Wood-grain paper ink-jet printing pigment ink and preparation method thereof Download PDFInfo
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- CN112724738A CN112724738A CN202011473976.2A CN202011473976A CN112724738A CN 112724738 A CN112724738 A CN 112724738A CN 202011473976 A CN202011473976 A CN 202011473976A CN 112724738 A CN112724738 A CN 112724738A
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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
- C09D11/037—Printing inks characterised by features other than the chemical nature of the binder characterised by the pigment
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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
-
- 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
- C09D11/104—Polyesters
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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
- C09D11/106—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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The invention relates to the technical field of ink-jet printing pigment ink, in particular to pigment ink for wood-grain paper ink-jet printing and a preparation method thereof. The ink is suitable for ink-jet printing veneered wood-grain paper, can still stably develop color after being pressed and ironed by the wood-grain veneer, and can endow the wood-grain veneer with certain UV resistance.
Description
Technical Field
The invention relates to the technical field of ink-jet printing pigment ink, in particular to ink-jet printing pigment ink for wood-grained paper and a preparation method thereof.
Background
At present, wood grain paper mainly comprises two printing processes of gravure printing and digital ink jet printing, the mainstream gravure printing process relates to a fussy color mixing process, the printing and plate opening cost is high, the overprinting process is complex, and the high-efficiency and personalized printing requirements cannot be met. The digital ink jet printing has certain advantages in improving the quality of printed products, the printing speed and the production efficiency and reducing the printing cost. The wood grain paper can be used as decorative paper alone or as a facing material of a wood grain veneer, and the wood grain paper is attached to a plate through a pressing and ironing process in the latter application scene. At present, the water-based pigment ink which can be used for ink-jet printing of wood grain paper in the market is few in variety, and the problem of high-temperature discoloration exists generally, so that the product quality of the wood grain veneer is indirectly influenced.
Disclosure of Invention
The first purpose of the invention is to provide the pigment ink for the ink-jet printing of the wood-grained paper, which has stable color development after pressing.
The second purpose of the invention is to provide a preparation method of the pigment ink for the ink-jet printing of the wood-grain paper.
In order to achieve the first object, the invention provides pigment ink for the ink-jet printing of wood grain paper, which is characterized by comprising a high-temperature resistant pigment dispersion and a first aqueous resin added in the ink total mixing stage, wherein the high-temperature resistant pigment dispersion comprises an organic pigment toner, a second aqueous resin and a dispersing agent. Wherein the first water-based resin and the second water-based resin are both water-based organic silicon modified resins, and the dispersing agent is hydroxypropyl methyl cellulose or polyvinylpyrrolidone.
According to the scheme, the second water-based resin and the dispersing agent used in the preparation process of the high-temperature-resistant pigment dispersion and the first water-based resin added in the total mixing process of the pigment ink for the wood-grain paper inkjet printing basically determine the color retention performance of the ink as main film-forming components in the ink, the water-based organic silicon modified resin refers to resin with a silicon-oxygen chain or a silicon-carbon chain with high thermal stability introduced into a main chain or a side chain of a resin molecule, and ink corresponding to the resin can form a heat-resistant compact film after inkjet printing, does not yellow or discolor at high temperature and can effectively protect pigment toner particles wrapped in the film, so that the wood-grain paper printed by using the ink can stably develop color after being pressed and scalded. Hydroxypropyl methylcellulose and polyvinylpyrrolidone are both suitable for an ink water dispersion system adopting organic silicon modified resin as dispersing agents, and the hydroxypropyl methylcellulose and the polyvinylpyrrolidone are both transparent in film formation, are not easy to change color under a high-temperature condition, and are suitable for being applied to a high-temperature resistant pigment dispersion.
Correspondingly, the organic pigment toner can also be selected from varieties with better thermal stability, such as the organic pigment toners with international pigment indexes of PB7 (black), PB15:3 (blue), PV19 (red) and PY155 (yellow), so as to further improve the relevant performance of the high-temperature resistant pigment dispersion.
The further proposal is that the water-based organic silicon modified resin is selected from one or two of water-based organic silicon modified polyester resin, water-based organic silicon modified acrylic resin and water-based organic silicon modified polyurethane resin.
Therefore, the three resins are uniform and compact in film formation, have high toughness and waterproof performance, and also have high color retention and gloss retention. At present, in mainstream manufacturers, representative models of the water-based silicone modified polyester resin include SilIKOFLUAL HTW 3 and KR-5235 originated in Japan, representative model of the water-based silicone modified acrylic resin includes KR-9706 originated in Japan, and representative model of the water-based silicone modified polyurethane resin includes SIPU-8736 originated in Guangzhou Henring.
The high-temperature resistant pigment dispersion comprises 10-20 wt% of organic pigment toner, 3-10 wt% of second aqueous resin, 3-10 wt% of dispersant and the balance of aqueous organic solvent.
Therefore, the pigment dispersoid prepared from the raw materials according to the proportion by a reasonable grinding process can form a stable dispersion system and can be applied to pigment ink for printing veneered wood grain paper. In specific practice, the aqueous organic solvent may be any of those commonly used in the field of pigment inks, such as ethylene glycol, diethylene glycol, glycerol, propylene glycol, polyethylene glycol, and 1, 3-pentanediol.
In a further embodiment, the high temperature resistant pigment dispersion has a solids content of 16% to 40% and a viscosity of 8cP to 15 cP.
As can be seen from the above, controlling the solid content and viscosity of the high temperature resistant pigment dispersion within the above ranges is advantageous for controlling the solid content and viscosity of the pigment ink and improving the jetting performance of the ink.
Further, the refractory pigment dispersion has a median particle diameter of 170nm or less and a 99% value of the cumulative particle size distribution of 390nm or less.
As can be seen from the above, when the median particle diameter (D50) and the 99% value (D99) of the cumulative particle size distribution of the refractory pigment dispersion are controlled to be within the above ranges, the overall particle diameter of the pigment dispersion is small, and the pigment ink is not easily clogged.
The paint comprises 15 to 40 percent of high-temperature resistant pigment dispersion, 0.5 to 2 percent of surfactant, 1 to 10 percent of first aqueous resin, 20 to 30 percent of aqueous organic solvent, 0.1 to 1 percent of antibacterial agent and the balance of water.
Therefore, the raw materials according with the proportion can form a stable dispersion system, and the veneering wood grain paper printed by the ink can still stably develop color after being pressed and ironed.
Further, the surface tension of the pigment ink for the ink-jet printing of the grained paper is 30mN/m to 40 mN/m.
Therefore, the dye ink with higher surface tension can slowly permeate on the high-hygroscopicity printing paper, so that the printed patterns can be ensured to be clear and bright, and the printing effect can be improved. Specifically, the surface tension of the ink can be controlled within the above range by selecting a suitable surfactant, such as those available in the Surfynol series and the Duile PSA series of the American winning Association.
In order to achieve the second object, the present invention provides a method for preparing the pigment ink for inkjet printing of wood grain paper, which is characterized by comprising the following steps:
s1: 10 to 20 percent of organic pigment toner, 3 to 10 percent of second aqueous resin, 3 to 10 percent of dispersant and the balance aqueous organic solvent are stirred and mixed for 1 to 2 hours at the rotating speed of 800rpm to 1200rpm under the condition of room temperature according to weight percentage to obtain dispersion liquid.
S2: grinding the dispersion liquid at the rotation speed of 1200rpm to 1800rpm for 4h, and filtering the mixture by a filter membrane with the aperture of 0.45 mu m to obtain the high-temperature resistant pigment dispersion.
S3: taking 15 to 40 percent of high-temperature resistant pigment dispersion, 0.5 to 2 percent of surfactant, 1 to 10 percent of first aqueous resin, 20 to 30 percent of aqueous organic solvent, 0.1 to 1 percent of antibacterial agent and the balance of water by weight percent, stirring and mixing at room temperature at the rotating speed of 800rpm to 1000rpm for 30 to 60min, and filtering by a 0.45 mu m pore size filter membrane.
As can be seen from the above scheme, the steps S1 and S2 can obtain a uniform and stable high temperature resistant pigment dispersion through stirring and grinding processes for a long time, respectively, and then the high temperature resistant pigment dispersion can be ensured to be sufficiently fused with other components in the ink through the step S3.
In particular, the first aqueous resin used in the ink mixing step and the second aqueous resin used in the preparation step of the high-temperature resistant pigment dispersion are preferably consistent in the variety and specific type of the organic silicon modified resin, which is beneficial to the fusion of the pigment dispersion and other components in the ink, and in addition, the same rules are recommended to be followed in the use of the aqueous organic solvent.
Further, in step S2, the dispersion is ground by a grinder having a zirconium bead loading of 70 to 80% and a zirconium bead diameter of 0.3 mm.
Therefore, the grinding machine adopting the zirconium beads with the particle size specification and the filling amount meeting the requirements can achieve a better grinding effect on the dispersion liquid, so that the particle size parameter of the high-temperature-resistant pigment dispersion is controlled within an ideal range.
Detailed Description
The invention prepares the pigment ink for the wood grain paper ink-jet printing according to the following steps:
s1: adding 10 to 20 weight percent of organic pigment toner, 3 to 10 weight percent of water-based organic silicon modified resin, 3 to 10 weight percent of dispersant and the balance of water-based organic solvent into a stirring kettle, and stirring and mixing for 1 to 2 hours at the rotating speed of 800rpm to 1200rpm under the condition of room temperature to obtain dispersion liquid.
S2: and (3) injecting the dispersion into a horizontal grinding machine, grinding for 4 hours at the rotating speed of 1200-1800 rpm, and filtering by using a PP (polypropylene) filter membrane with the aperture of 0.45 mu m to obtain the high-temperature-resistant pigment dispersion, wherein the horizontal grinding machine uses zirconium beads with the particle size of 0.3mm, and the filling amount of the zirconium beads is 70-80%.
S3: taking 15 to 40 percent of high-temperature resistant pigment dispersoid, 0.5 to 2 percent of surfactant, 1 to 10 percent of water-based organic silicon modified resin, 20 to 30 percent of water-based organic solvent, 0.1 to 1 percent of antibacterial agent and the balance of water by weight percent, adding the mixture into a stirring kettle, stirring and mixing the mixture at the rotating speed of 800rpm to 1000rpm for 30 to 60min at room temperature, and filtering the mixture by a PP filter membrane with the aperture of 0.45 mu m to obtain the wood grain paper ink-jet printing pigment ink.
Wherein the water-based organic silicon modified resin is one or two of water-based organic silicon modified polyester resin, water-based organic silicon modified acrylic resin and water-based organic silicon modified polyurethane resin, and the dispersing agent is hydroxypropyl methyl cellulose or polyvinylpyrrolidone.
Examples and comparative examples
Examples one to four used organic pigment toners having international pigment indices PB7 (black), PB15:3 (blue), PV19 (red) and PY155 (yellow), respectively; the American Yingchuang SILIKOFLU HTW 3 water-based organic silicon modified polyester resin, the Japanese Xinyue KR-9706 water-based organic silicon modified acrylic resin and the Guangzhou Huntingyung SIPU-8736 water-based organic silicon modified polyurethane resin are used; using diethylene glycol as an aqueous organic solvent; using Surfynol 420 surfactant of American winning wound; the antibacterial agent of loxel GXL from Longsha was used. Comparative examples one to four inks were prepared by the same procedure as in the examples, differing in composition mainly in that a Diegon BURNOCK ZDW-235 aqueous acrylic resin was used, and Bick BYK-101 was selected for the dispersant, and the same color pigment dispersion was used for the inks in the same numbered examples and comparative examples.
Table 1: ingredient list of pigment dispersion
Table 2: ink composition table for inkjet printing pigment
Pigment dispersions A, B, C and D were found to have solids contents in the range of 16% to 40%, viscosities in the range of 8cP to 15cP, median particle diameters below 170nm, and 99% cumulative particle size distributions below 390 nm. Examples one to four prepared pigment inks all had surface tensions in the range of 30mN/m to 40 mN/m.
Pressing test
The inks prepared in the examples and the comparative examples were printed with pure color patches of the same size on titanium white paper using an EPSON T5280 printer according to a 100% inkjet setting, and after the ink dried, the patch areas were pressed and ironed using a hot press with reference to the manufacturing process of wood grain veneer at a pressing temperature of 180 ℃ to 190 ℃ and a pressure parameter of 533T/m2The pressing time is 30 s. Color density values, L values (representing black and white, "+" representing white and "-" representing dark), a values (representing red and green, "+" representing red and "-" representing green), b values (representing yellow and "+" representing yellow and "-" representing blue) and Δ E ab values (representing color differences based on the CIE76 formula) of the color patches were measured using an alice X-RITE EXACT act densitometer before and after pressing, and the color density decay rates were calculated according to the following formulas:
color density attenuation ratio (%) - (color density before irradiation-color density after irradiation) ÷ color density before irradiation × 100%;
the results of the relevant tests are shown in table 3, and it can be seen from table 3 that the example group has a lower color density attenuation rate and Δ Ε ab, and the relevant values are much lower than those of the control group with the corresponding color, indicating that the inkjet printing pigment ink prepared by the invention can better adapt to the pressing and ironing process of the wood grain veneer, and is more suitable for inkjet printing veneered wood grain paper compared with the common wood grain paper pigment ink.
Table 3: pressing test results
UV resistance test
Considering that wood grain veneers are sometimes used as exterior wall decorative panels, it is necessary to consider the UV resistance of the pigment ink for inkjet printing of wood grain paper.
The test refers to a detection method of ultraviolet light resistance of the mark in QB/T2730.2-2013, and specifically comprises the steps of printing a pure color block on titanium white paper by using an EPSON T5280 printer according to 100% ink jet setting, cutting a 2cm square color block area to be used as a printing sample, then putting the sample into an ultraviolet light experiment box, and controlling the distance between a light source and the printing sample to be 150mm +/-10 mm. A254 nm ultraviolet source is used for irradiating the printed sample for 4.5h under the power of 24W, an Alice X-RITE EXACT spectrodensitometer is used for detecting the color density value, the L value, the a value, the b value and the delta E ab value of the sample before and after the ultraviolet irradiation treatment, the color density attenuation rate is calculated according to a formula in the pressing test, and the related test results are shown in a table 4.
As can be seen from Table 4, the absolute values of the color density attenuation rates of the corresponding prints of the example set after ultraviolet irradiation for a specified time do not exceed the reference qualification limit of 10% (namely the qualification limit specified by QB/T2730.2-2013), and the relevant numerical values are controlled within 2%, which indicates that the wood-grain paper ink-jet printing ink prepared by the invention has better UV resistance, and the relevant derivative products can also be used for decorating external walls.
Table 4: UV resistance test results
Claims (9)
1. The pigment ink for the ink-jet printing of the wood grain paper is characterized in that:
the ink comprises a high-temperature-resistant pigment dispersion and a first aqueous resin added in the total mixing stage of ink, wherein the high-temperature-resistant pigment dispersion comprises an organic pigment toner, a second aqueous resin and a dispersing agent;
the first water-based resin and the second water-based resin are both water-based organic silicon modified resins, and the dispersing agent is hydroxypropyl methyl cellulose or polyvinylpyrrolidone.
2. The pigment ink for inkjet printing of wood grain paper as claimed in claim 1, wherein:
the water-based organic silicon modified resin is one or two of water-based organic silicon modified polyester resin, water-based organic silicon modified acrylic resin and water-based organic silicon modified polyurethane resin.
3. The pigment ink for inkjet printing of wood grain paper as claimed in claim 2, wherein:
the high-temperature-resistant pigment dispersion comprises, by weight, 10% to 20% of the organic pigment toner, 3% to 10% of the second aqueous resin, 3% to 10% of the dispersant, and the balance of an aqueous organic solvent.
4. The pigment ink for inkjet printing of wood grain paper as claimed in claim 2, wherein:
the high temperature resistant pigment dispersion has a solid content of 16% to 40% and a viscosity of 8cP to 15 cP.
5. The pigment ink for inkjet printing of wood grain paper as claimed in claim 2, wherein:
the refractory pigment dispersion has a median particle diameter of 170nm or less and a 99% value of cumulative particle size distribution of 390nm or less.
6. The pigment ink for inkjet printing of wood grain paper as claimed in claim 2, wherein:
the high-temperature resistant pigment dispersion comprises 15-40% of the high-temperature resistant pigment dispersion, 0.5-2% of a surfactant, 1-10% of the first aqueous resin, 20-30% of an aqueous organic solvent, 0.1-1% of an antibacterial agent and the balance of water in percentage by weight.
7. The pigment ink for inkjet printing of wood grain paper as claimed in claim 6, wherein:
the surface tension of the pigment ink for the ink-jet printing of the grained paper is 30mN/m to 40 mN/m.
8. A method for preparing pigment ink for the ink-jet printing of the wood-grain paper as claimed in claim 6 or 7, which comprises the following steps:
s1: stirring and mixing 10 to 20 weight percent of the organic pigment toner, 3 to 10 weight percent of the second aqueous resin, 3 to 10 weight percent of the dispersant and the balance of aqueous organic solvent at the room temperature at the rotating speed of 800rpm to 1200rpm for 1 to 2 hours to obtain dispersion liquid;
s2: grinding the dispersion liquid for 4 hours at the rotating speed of 1200 rpm-1800 rpm, and filtering the ground dispersion liquid through a filter membrane with the aperture of 0.45 mu m to obtain a high-temperature-resistant pigment dispersion;
s3: taking 15 to 40 percent of the high-temperature resistant pigment dispersion, 0.5 to 2 percent of the surfactant, 1 to 10 percent of the first aqueous resin, 20 to 30 percent of the aqueous organic solvent, 0.1 to 1 percent of the antibacterial agent and the balance of water by weight percent, stirring and mixing at room temperature at the rotating speed of 800rpm to 1000rpm for 30 to 60min, and filtering with a 0.45 mu m pore size filter membrane.
9. The method for preparing pigment ink for ink-jet printing of grained paper according to claim 8, wherein:
the dispersion was subjected to milling treatment in step S2 using a mill having a zirconium bead loading of 70% to 80% and a zirconium bead particle diameter of 0.3 mm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116496659A (en) * | 2023-04-28 | 2023-07-28 | 英科卡乐油墨(湖北)有限公司 | High-temperature-resistant water-based ink for cigarette tipping material |
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| CN106634223A (en) * | 2016-10-18 | 2017-05-10 | 浙江深蓝新材料科技股份有限公司 | Carrier color paste for synthetic leather synthetic leather surface, water-based ink and preparation method thereof |
| CN108178949A (en) * | 2018-01-16 | 2018-06-19 | 深圳市墨库图文技术有限公司 | A kind of woodgrained paper digital printing paint ink and preparation method thereof |
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2020
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| CN103436094A (en) * | 2013-08-27 | 2013-12-11 | 华南理工大学 | Thermosetting high temperature resisting printing ink for touch screen as well as preparation method of printing ink |
| CN106634223A (en) * | 2016-10-18 | 2017-05-10 | 浙江深蓝新材料科技股份有限公司 | Carrier color paste for synthetic leather synthetic leather surface, water-based ink and preparation method thereof |
| CN108178949A (en) * | 2018-01-16 | 2018-06-19 | 深圳市墨库图文技术有限公司 | A kind of woodgrained paper digital printing paint ink and preparation method thereof |
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| CN116496659A (en) * | 2023-04-28 | 2023-07-28 | 英科卡乐油墨(湖北)有限公司 | High-temperature-resistant water-based ink for cigarette tipping material |
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Application publication date: 20210430 |