CN116200074A - Water-based pigment inkjet ink and preparation method and application thereof - Google Patents
Water-based pigment inkjet ink and preparation method and application thereof Download PDFInfo
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- CN116200074A CN116200074A CN202310248385.2A CN202310248385A CN116200074A CN 116200074 A CN116200074 A CN 116200074A CN 202310248385 A CN202310248385 A CN 202310248385A CN 116200074 A CN116200074 A CN 116200074A
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- aqueous
- pigment dispersion
- inkjet ink
- dispersion liquid
- aqueous 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
- C09D11/30—Inkjet printing inks
- C09D11/38—Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
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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
- C09D11/30—Inkjet printing inks
- C09D11/32—Inkjet printing inks characterised by colouring agents
Abstract
The invention relates to water-based pigment inkjet ink, a preparation method and application thereof, wherein the water-based pigment inkjet ink comprises the following components in percentage by mass: 35-50% of aqueous pigment dispersion liquid, 10-30% of solvent, 0.5-5% of surfactant, 1-5% of moisturizing auxiliary agent, 3-10% of aqueous resin emulsion, 0-0.6% of bactericide and the balance of water; wherein the moisturizing auxiliary agent is at least one of ethylenediamine tetraacetic acid, polyvinyl alcohol and caprolactam. The ink has excellent printing smoothness on the EPSON nozzle model and excellent ink stability, and particularly, the nozzle can not be blocked after long-time standby, and the service life of the nozzle is influenced by oblique spraying and the like.
Description
Technical Field
The invention relates to the technical field of pigment ink, in particular to water-based pigment ink-jet ink, and a preparation method and application thereof.
Background
An inkjet printer is a device that prints with ink, and can be used on a substrate such as paper, cloth, advertisement cloth, or the like. In practical use, it is difficult to avoid a case where printing is interrupted in time. When the printer is started up again after a period of stopping, ink shortage or ink interruption often occurs, normal ink jet is affected, and even more, after the printer nozzle is repeatedly cleaned and is invalid, the printer nozzle needs to be replaced, so that unnecessary loss is caused.
Taking the commercial inkjet model Epson WF-C869Ra as an example, in daily use, the pattern meeting the requirement is often met when the pattern is not used for a period of time (or is standby for a period of time), and the pattern is not smooth in color at the earlier stage of printing and is difficult to print even when the pattern is used after being started again.
The main reasons for the occurrence of the above phenomena are the stability problem of the ink, and for this purpose, patent application CN114702858A discloses an aqueous color latex ink suitable for an epson nozzle, wherein the aqueous color latex ink suitable for an epson nozzle has good stability, and the pigment dispersion liquid is 30-40%, the resin is 35-40%, the humectant is 10-30%, the surfactant is 1.5-2.0%, and the bactericide is 0.1-0.2%. However, the latex ink has differences in pigment base material and resin, and the latex auxiliary agent in the latex ink has an effect of promoting the stability of the whole formulation, compared with the common aqueous pigment ink-jet ink, so that the scheme is suitable for the type of the latex ink, but cannot meet the common aqueous pigment ink-jet ink which is more widely applicable and has higher stability requirement.
In the above proposal, the applicable medium of the ink is an uncoated or hydrophobic substrate, the application field is emulsion type, the emulsion ink is derived from the ink corresponding to HP LATEX emulsion type, the characteristic is that the ink system is mainly applicable to various uncoated or hydrophobic substrates, therefore, the ink system needs special components to make the aqueous ink image on the uncoated or hydrophobic substrate medium and achieve the scratch resistance, the emulsion ink in the proposal aims to make the combination of the ink and the substrate achieve good state, and does not have long-term protection performance for the ink-jet printing head, thus the problem of nozzle blockage is very easy to happen when the emulsion ink is applied to the commercial ink-jet type Epson WF-C869 Ra.
Disclosure of Invention
The invention aims to overcome the defect of the stability of the existing water-based pigment ink, and provides the water-based pigment ink-jet ink which has advantages in terms of printing smoothness, standby stability and high-low temperature storage stability and can solve the problem of head collision and blockage caused by standby of a printer at present.
The inventor considers that the phenomenon that the nozzle is blocked when the device is in standby, one important factor is that the applicability of the ink to the machine type is defective, and the ink is basically insufficient in the aspects of fluency, standby stability and high-low temperature storage stability. The water-based pigment ink-jet ink is generally composed of water-based pigment dispersion liquid, a solvent, an auxiliary agent and water-based resin, wherein the pigment and the resin in the water-based pigment dispersion liquid can be dried or formed into a film at room temperature over time, and the phenomenon of blocking the nozzle after being placed is easy to occur on the EPSON piezoelectric nozzle due to the small aperture of the ink-jet piezoelectric nozzle (generally, the size of the EPSON ink-jet droplet is between 2 and 10 picoliters), so that the ink cannot be sprayed out or is in an inclined spraying state and other bad states are caused, and the ink-jet nozzle needs to be replaced at the moment, so that larger cost loss is caused.
In order to solve the problems, the invention adopts aqueous pigment dispersion liquid and aqueous resin emulsion with certain viscosity and matches with moisturizing auxiliary agent to obviously improve the stability of the ink, especially the stability in standby is improved by 2-3 times. Specifically, an aqueous pigment dispersion liquid with the viscosity less than or equal to 20mPa.s at 25 ℃ and an aqueous resin emulsion with the viscosity less than or equal to 200mPa.s at 25 ℃ are adopted to form an ink system with good moisturizing performance, on the basis, the moisturizing performance of the ink is further improved by virtue of a surfactant and a moisturizing auxiliary agent, and even if the moisture of the ink is naturally volatilized in a standby state, the moisturizing auxiliary agent can compensate the moisture loss of the ink by sucking the moisture in the air to reach an equilibrium state, so that the phenomenon that a start-up test nozzle is not broken after the shutdown standby is realized for 30 days, and then the phenomenon that the A4 is continuously printed for 50 pages is avoided.
The specific scheme is as follows:
an aqueous pigment inkjet ink comprising, in mass percent: 35-50% of aqueous pigment dispersion liquid, 10-30% of solvent, 0.5-5% of surfactant, 1-5% of moisturizing auxiliary agent, 3-10% of aqueous resin emulsion, 0-0.6% of bactericide and the balance of water;
the viscosity of the aqueous pigment dispersion liquid at 25 ℃ is less than or equal to 20mPa.s, the viscosity of the aqueous resin emulsion at 25 ℃ is less than or equal to 200mPa.s, and the moisturizing auxiliary agent is at least one of ethylenediamine tetraacetic acid, polyvinyl alcohol and caprolactam.
Further, the aqueous pigment inkjet ink comprises the following components in percentage by mass:
38-45% of aqueous pigment dispersion liquid, 15-25% of solvent, 0.5-5% of surfactant, 2-4% of moisturizing auxiliary agent, 5-10% of aqueous resin emulsion, 0-0.6% of bactericide and the balance of water; or alternatively
40-43% of aqueous pigment dispersion liquid, 17-20% of solvent, 0.5-5% of surfactant, 2-5% of moisturizing auxiliary agent, 6-9% of aqueous resin emulsion, 0-0.6% of bactericide and the balance of water.
Further, the particle diameter D50 of the aqueous pigment dispersion is less than or equal to 250nm; preferably, the particle size D50 is 1-200nm; more preferably, the particle size D50 is from 100 to 180nm;
preferably, the aqueous pigment dispersion has a viscosity of 2 to 12mpa.s at 25 ℃, more preferably the aqueous pigment dispersion has a viscosity of 3 to 9mpa.s at 25 ℃.
Further, the aqueous pigment dispersion liquid includes an aqueous black pigment dispersion liquid, an aqueous blue pigment dispersion liquid, an aqueous red pigment dispersion liquid, and an aqueous yellow pigment dispersion liquid;
preferably, the aqueous BLACK pigment dispersion is one of BLACK O-PT of clariant, BLACK COJ400 of cabobot, BLCAK DN240K of dupont, more preferably BLACK O-PT of clariant;
preferably, the aqueous blue pigment dispersion is one of Cyan BG-PT of Craien, cyan COJ450C of cabobot, diamond D75C, more preferably Diamond D75C;
preferably, the aqueous red pigment dispersion is one of Magenta E5B-PT of Craien, COJ480V of cabobot, diamond PV19, more preferably Diamond PV19;
preferably, the aqueous Yellow pigment dispersion is one of Yellow 4G-PT of Craine, COJ470Y of cabobot, diamond D75Y, more preferably Diamond D75Y.
Further, the solvent is at least 1 of monohydric alcohol, dihydric alcohol, trihydric alcohol, pyrrolidone, dihydric alcohol butyl ether and trihydric alcohol butyl ether; preferably, the solvent is at least 2 of dihydric alcohol, trihydric alcohol and pyrrolidone; more preferably at least 2 of ethylene glycol, glycerol, pyrrolidone.
Further, the surfactant is at least 1 of alkyne diols, organic silicon, organic alkoxy alcohols, polyether modified dimethyl siloxane nonionic or anionic surfactants; preferably, the surfactant is Surfynol 465,
At least 2 of Surfynol 104E, BYK 333; more preferably, the mass ratio of Surfynol 465, surfynol 104E is 5-10:1,Surfynol 465 and/or the mass ratio of Surfynol 104E to BYK 333 is (5-10): 1-3.
Further, the moisturizing aid is preferably caprolactam or ethylenediamine tetraacetic acid, more preferably caprolactam.
Further, the aqueous resin emulsion has a viscosity of less than 200mpa.s at 25 ℃, more preferably: 80-110mPa.s;
preferably, the particle diameter D50 of the aqueous resin emulsion is less than or equal to 250nm, preferably 1-200nm, more preferably 100-150nm;
preferably, the aqueous resin emulsion is one of aqueous acrylic acid, aqueous aliphatic polyurethane and aqueous polycarbonate polyurethane; more preferably an aqueous polycarbonate polyurethane;
preferably, the aqueous pigment inkjet ink has the characteristics of at least one of the following (1) to (4): (1) conductivity at 25 ℃): less than or equal to 5mS/cm;
(2) pH at 25 ℃): 6-10;
(3) Surface tension at 25 ℃): 20-35mN/m;
(4) Viscosity at 25 ℃): 4.0-6.0mpa.s.
The invention also provides a preparation method of the water-based pigment inkjet ink, which comprises the following steps:
1) Uniformly mixing the solvent, the surfactant, the optional bactericide and deionized water to obtain a mixed solution A;
2) Uniformly mixing the moisturizing auxiliary with the mixed solution A to obtain a mixed solution B;
3) Uniformly mixing the aqueous resin emulsion with the mixed solution B to obtain a mixed solution C;
4) Uniformly mixing the aqueous pigment dispersion liquid with the mixed solution C to obtain a mixed solution D;
5) And filtering the mixed solution D by using a 0.1-1.0 micrometer filter membrane through 0.3-0.7Mpa positive pressure filtering equipment to obtain the final aqueous pigment inkjet ink.
The invention also protects the application of the aqueous pigment inkjet ink in inkjet printing, especially in EPSON nozzle model, preferably in Epson C869Ra model.
The beneficial effects are that:
according to the water-based pigment inkjet ink prepared by the invention, through the water-based pigment dispersion liquid and the water-based resin emulsion with certain viscosity and the moisturizing auxiliary agent, the water-based pigment inkjet ink has good fluency, standby performance and stability performance on an Epson C869Ra model, has a better protection effect on a printing nozzle, and solves the problem of nozzle blockage caused by printing after standby.
The water-based pigment ink-jet ink prepared by the invention has stable overall properties of the collocation of the raw materials, and the physicochemical parameters of the ink are in the application range of the EPSON WF-C968Ra nozzle, namely the conductivity: less than or equal to 5mS/cm; ph value: 6-10; surface tension: 20-35mN/m; viscosity: 4.0 to 6.0mpa.s, all measured at a temperature of 25 ℃.
In a word, the water-based pigment ink-jet ink prepared by the invention continuously sprays 3000 pages on the EPSON WF-C968Ra model to continuously print lines, and the standby performance test of standby for one month does not block a spray head, continuously sprays lines, can normally spray and print, has good high and low temperature test stability and wide application prospect.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the preferred embodiments of the present invention are described below, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. The specific techniques or conditions are not identified in the examples and are performed according to techniques or conditions described in the literature in this field or according to the product specifications. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention. In the following examples, "%" means weight percent and parts means parts by weight unless otherwise specified.
The test methods used below included:
the ink was loaded on an Epson C869Ra model for printing tests as follows:
(1) Fluency performance: and (3) spraying and printing a total of 3000 pages of A4 on the machine type, wherein the test nozzle has no broken line phenomenon, and the smoothness performance is qualified.
(2) Standby performance: after the machine is shut down and stands by for 30 days, the starting test nozzle is free from the phenomenon of broken lines, and the machine is used for continuously printing 50 pages with the size of A4, and the phenomenon of broken lines is not generated, so that the machine is qualified in standby performance.
(3) Stability performance: and (3) testing the high-low temperature circulation of the ink (keeping the temperature at 60 ℃ for 7 days and freezing at-10 ℃ for 1 day), and detecting the physical and chemical parameter change (conductivity, pH value, surface tension and viscosity) of the ink, wherein the physical and chemical parameter change rate meets the standard, and the stability is qualified.
The main reagents used below include:
and (2) a surfactant: surfynol 465, surfynol 104E, BYK 333, dupont FS-3100;
a bactericide: proxel GXL;
aqueous resin emulsion: mitsui chemical W6110, lubo T805;
aqueous pigment dispersion: BLACK O-PT of Clariant, PV19 of D75C, diamond of Diamond, D75Y of Diamond.
Examples 1 to 9, comparative examples 1 to 2
The raw materials were prepared according to table 1 as follows:
1) Mixing a solvent, a surfactant and a bactericide with deionized water, and uniformly stirring at a rotating speed of 700-900rpm to obtain a mixed solution A;
2) Mixing the moisturizing auxiliary agent with the mixed solution A, and uniformly stirring at the rotating speed of 700-900rpm to obtain a mixed solution B;
3) Mixing the aqueous resin emulsion with the mixed solution B, and uniformly stirring at the rotating speed of 700-900rpm to obtain a mixed solution C;
4) Mixing the aqueous pigment dispersion liquid with the mixed solution C, and uniformly stirring at the rotating speed of 700-900rpm to obtain a mixed solution D;
5) And filtering the mixed solution D by using a positive pressure filtering device of 0.3-0.7Mpa and a glass fiber filter membrane of 0.6 micrometer to obtain the final aqueous pigment inkjet ink.
Table 1 raw materials used table (mass percent)
The prepared ink was subjected to a print test, and the results are shown in table 2.
Table 2 ink on-machine test results table
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the simple modifications belong to the protection scope of the present invention.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the invention are not described in detail in order to avoid unnecessary repetition.
Moreover, any combination of the various embodiments of the invention can be made without departing from the spirit of the invention, which should also be considered as disclosed herein.
Claims (10)
1. An aqueous pigment inkjet ink, characterized in that: comprises the following components in percentage by mass: 35-50% of aqueous pigment dispersion liquid, 10-30% of solvent, 0.5-5% of surfactant, 1-5% of moisturizing auxiliary agent, 3-10% of aqueous resin emulsion, 0-0.6% of bactericide and the balance of water;
the viscosity of the aqueous pigment dispersion liquid at 25 ℃ is less than or equal to 20mPa.s, the viscosity of the aqueous resin emulsion at 25 ℃ is less than or equal to 200mPa.s, and the moisturizing auxiliary agent is at least one of ethylenediamine tetraacetic acid, polyvinyl alcohol and caprolactam.
2. The aqueous pigment inkjet ink according to claim 1 wherein: comprises the following components in percentage by mass: 38-45% of aqueous pigment dispersion liquid, 15-25% of solvent, 0.5-5% of surfactant, 2-4% of moisturizing auxiliary agent, 5-10% of aqueous resin emulsion, 0-0.6% of bactericide and the balance of water; or alternatively
40-43% of aqueous pigment dispersion liquid, 17-20% of solvent, 0.5-5% of surfactant, 2-5% of moisturizing auxiliary agent, 6-9% of aqueous resin emulsion, 0-0.6% of bactericide and the balance of water.
3. The aqueous pigment inkjet ink according to claim 1 or 2, characterized in that: the particle size D50 of the aqueous pigment dispersion is less than or equal to 250nm; preferably, the particle size D50 is 1-200nm; more preferably, the particle size D50 is from 100 to 180nm;
preferably, the aqueous pigment dispersion has a viscosity of 2 to 12mpa.s at 25 ℃, more preferably the aqueous pigment dispersion has a viscosity of 3 to 9mpa.s at 25 ℃.
4. The aqueous pigment inkjet ink according to claim 3 wherein: the aqueous pigment dispersion liquid comprises an aqueous black pigment dispersion liquid, an aqueous blue pigment dispersion liquid, an aqueous red pigment dispersion liquid and an aqueous yellow pigment dispersion liquid;
preferably, the aqueous BLACK pigment dispersion is one of BLACK O-PT of clariant, BLACK COJ400 of cabobot, BLCAK DN240K of dupont, more preferably BLACK O-PT of clariant; preferably, the aqueous blue pigment dispersion is one of Cyan BG-PT of Craien, cyan COJ450C of cabobot, diamond D75C, more preferably Diamond D75C;
preferably, the aqueous red pigment dispersion is one of Magenta E5B-PT of Craien, COJ480V of cabobot, diamond PV19, more preferably Diamond PV19;
preferably, the aqueous Yellow pigment dispersion is one of Yellow 4G-PT of Craien, COJ470Y of cabobot, diamond D75Y, more preferably Diamond D75Y.
5. The aqueous pigment inkjet ink according to claim 1 or 2, characterized in that: the solvent is at least 1 of monohydric alcohol, dihydric alcohol, trihydric alcohol, pyrrolidone, dihydric alcohol butyl ether and trihydric alcohol butyl ether; preferably, the solvent is at least 2 of dihydric alcohol, trihydric alcohol and pyrrolidone; more preferably at least 2 of ethylene glycol, glycerol, pyrrolidone.
6. The aqueous pigment inkjet ink according to claim 1 or 2, characterized in that: the surfactant is at least 1 of acetylenic diols, organic silicon, organic alkoxy alcohols, polyether modified dimethyl siloxane nonionic or anionic surfactants; preferably, the surfactant is at least 2 of Surfynol 465 and Surfynol 104E, BYK 333; more preferably, the mass ratio of Surfynol 465, surfynol 104E is (5-10): 1, and the mass ratio of Surfynol 465 and/or Surfynol 104E to BYK 333 is (5-10): 1-3.
7. The aqueous pigment inkjet ink according to claim 1 or 2, characterized in that: the moisture retention aid is preferably caprolactam or ethylenediamine tetraacetic acid, more preferably caprolactam.
8. The aqueous pigment inkjet ink according to claim 1 or 2, characterized in that: the aqueous resin emulsion has a viscosity of less than 200mpa.s at 25 ℃, more preferably: 80-110mPa.s;
preferably, the particle diameter D50 of the aqueous resin emulsion is less than or equal to 250nm, preferably 1-200nm, more preferably 100-150nm;
preferably, the aqueous resin emulsion is one of aqueous acrylic acid, aqueous aliphatic polyurethane and aqueous polycarbonate polyurethane; more preferably an aqueous polycarbonate polyurethane;
preferably, the aqueous pigment inkjet ink has the characteristics of at least one of the following (1) to (4):
(1) Conductivity at 25 ℃): less than or equal to 5mS/cm;
(2) pH at 25 ℃): 6-10;
(3) Surface tension at 25 ℃): 20-35mN/m;
(4) Viscosity at 25 ℃): 4.0-6.0mpa.s.
9. A method of preparing the aqueous pigment inkjet ink according to any one of claims 1 to 8 wherein: comprising the following steps:
1) Uniformly mixing the solvent, the surfactant, the optional bactericide and deionized water to obtain a mixed solution A;
2) Uniformly mixing the moisturizing auxiliary with the mixed solution A to obtain a mixed solution B;
3) Uniformly mixing the aqueous resin emulsion with the mixed solution B to obtain a mixed solution C;
4) Uniformly mixing the aqueous pigment dispersion liquid with the mixed solution C to obtain a mixed solution D;
5) And filtering the mixed solution D by using a 0.1-1.0 micrometer filter membrane through 0.3-0.7Mpa positive pressure filtering equipment to obtain the final aqueous pigment inkjet ink.
10. Use of an aqueous pigment inkjet ink according to any one of claims 1 to 8 for inkjet printing, in particular on EPSON nozzle types, preferably EPSON C869Ra types.
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| CN109627848A (en) * | 2018-12-10 | 2019-04-16 | 郑州鸿盛数码科技股份有限公司 | A kind of functional ink and its Method of printing |
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| CN113881283A (en) * | 2021-11-22 | 2022-01-04 | 珠海纳思达企业管理有限公司 | Water-based pigment ink |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100081740A1 (en) * | 2008-09-29 | 2010-04-01 | Christian Jackson | Aqueous inkjet ink comprising self-dispersing pigment |
| JP2012036251A (en) * | 2010-08-04 | 2012-02-23 | Dainichiseika Color & Chem Mfg Co Ltd | Aqueous pigment dispersion for inkjet, and ink |
| CN107022242A (en) * | 2017-05-27 | 2017-08-08 | 珠海天威新材料股份有限公司 | Suitable for the aqueous pigment ink of industrial nozzle corrugated board digital printer |
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