CN111021093A - Cross-linking type environment-friendly textile coating ink and preparation method and application thereof - Google Patents
Cross-linking type environment-friendly textile coating ink and preparation method and application thereof Download PDFInfo
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- CN111021093A CN111021093A CN201911381716.XA CN201911381716A CN111021093A CN 111021093 A CN111021093 A CN 111021093A CN 201911381716 A CN201911381716 A CN 201911381716A CN 111021093 A CN111021093 A CN 111021093A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0031—Degasification of liquids by filtration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/52—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
- D06P1/5264—Macromolecular compounds obtained otherwise than by reactions involving only unsaturated carbon-to-carbon bonds
- D06P1/5285—Polyurethanes; Polyurea; Polyguanides
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
- D06P1/642—Compounds containing nitrogen
- D06P1/6424—Compounds containing isocyanate or isothiocyanate groups
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/30—Ink jet printing
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- Chemical Kinetics & Catalysis (AREA)
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- Inks, Pencil-Leads, Or Crayons (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
Abstract
The invention is suitable for the technical field of digital ink-jet printing, and provides a cross-linking type environment-friendly textile coating ink which comprises the following raw materials in parts by weight: 1-10 parts of organic pigment, 1-10 parts of dispersing agent, 1-5 parts of wetting agent, 1-20 parts of high molecular polymer binder, 1-5 parts of cross-linking agent, 1-40 parts of water-soluble organic solvent, 0.05-0.5 part of bactericide, 0.05-1 part of adhesion promoter and 30-60 parts of deionized water. The invention also provides a preparation method and application of the textile coating ink. Therefore, the textile coating ink disclosed by the invention is small in particle size, good in use and storage stability, stable and smooth in printing, free of blockage of a nozzle, and excellent in color fastness to a printing fabric; the method can be widely applied to the ink-jet printing of the Epson spray head digital printing machine, and particularly has better matching property and adaptability to the Epson EPS3200 industrial spray head.
Description
Technical Field
The invention relates to the technical field of digital ink-jet printing, in particular to a cross-linking type environment-friendly textile coating ink and a preparation method and application thereof.
Background
The Epson EPS3200 industry digital printing nozzle applies the latest MEMS technology, the nozzle is provided with 3200 jet holes, the jet hole distance is 600dpi, the minimum ink drop is 3.5PL, the maximum ignition frequency reaches 24K, and the nozzle is provided with a circulating system. The Epson EPS3200 spray head can achieve the effect of being not critical in color output, printing precision and printing speed. However, the requirement of the printing spray head for the matched textile coating ink is very critical. According to market research, the color fastness of the textile coating ink on the market to a printing fabric is not enough, no textile coating ink special for the Epson EPS3200 sprayer exists, the adaptability and the matching of the textile coating ink in the prior art to the Epson EPS3200 sprayer are not good, the advantage performance of the EPS3200 sprayer cannot be brought into play, and a lot of application confusion is brought to users.
In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.
Disclosure of Invention
Aiming at the defects, the invention aims to provide the cross-linking type environment-friendly textile coating ink and the preparation method and the application thereof, the textile coating ink has small particle size, good use and storage stability, stable and smooth printing, no blockage of a nozzle and excellent color fastness to a printing fabric; the method can be widely applied to the ink-jet printing of the Epson spray head digital printing machine, and particularly has better matching property and adaptability to the Epson EPS3200 industrial spray head.
In order to achieve the aim, the invention provides a crosslinking type environment-friendly textile coating ink which comprises the following raw materials in parts by weight: 1-10 parts of organic pigment, 1-10 parts of dispersing agent, 1-5 parts of wetting agent, 1-20 parts of high molecular polymer binder, 1-5 parts of cross-linking agent, 1-40 parts of water-soluble organic solvent, 0.05-0.5 part of bactericide, 0.05-1 part of adhesion promoter and 30-60 parts of deionized water.
The cross-linking type environment-friendly textile coating ink comprises the following raw materials in parts by weight: 3-8 parts of organic pigment, 3-8 parts of dispersing agent, 2-4 parts of wetting agent, 8-15 parts of high molecular polymer binder, 2-4 parts of cross-linking agent, 10-25 parts of water-soluble organic solvent, 0.1-0.3 part of bactericide, 0.1-0.5 part of adhesion promoter and 42-50 parts of deionized water.
According to the cross-linking type environment-friendly textile coating ink, the high-molecular polymer connecting material is any one or more of polyethylene-vinyl acetate copolymer, styrene-acrylic acid copolymer, acrylate polymer, polyurethane and polycarbonate.
According to the cross-linking type environment-friendly textile coating ink, the cross-linking agent is any one or more of aliphatic, aromatic, amide, latent curing amine and urea substitute cross-linking agents.
According to the crosslinking type environment-friendly textile coating ink, the crosslinking agent is an isocyanate crosslinking agent.
The invention also provides a preparation method of the crosslinking type environment-friendly textile coating ink, which comprises the following steps:
step one, preparing color paste
Respectively weighing the dispersing agent, the water-soluble organic solvent, the wetting agent, the bactericide and the deionized water according to the weight parts, mixing, adding the organic pigment, and continuously dispersing to obtain a primary mixture; the addition amount of the water-soluble organic solvent is 15-23% of the total amount of the water-soluble organic solvent, the addition amount of the wetting agent is 35-50% of the total amount of the wetting agent, and the addition amount of the deionized water is 48-57% of the total amount of the deionized water;
grinding the primary mixture to obtain a secondary mixture;
centrifuging the secondary mixture, and filtering after centrifuging to obtain color paste;
step two preparation of textile coating ink
Respectively adding the rest of the water-soluble organic solvent and the rest of the deionized water according to the weight parts, uniformly mixing, adding the rest of the wetting agent, and continuously uniformly mixing to obtain a mixed material I;
adding the high molecular polymer connecting material into the mixed material I, adding the cross-linking agent and the adhesion promoter after mixing, and continuously mixing to obtain a mixed material II;
adding the prepared color paste into the second mixed material, and emulsifying to obtain coarse ink;
and finely filtering the coarse ink, and then performing membrane degassing filtration to prepare the crosslinking type environment-friendly textile coating ink.
According to the preparation method of the cross-linking type environment-friendly textile coating ink, in the first step, the particle size d50 of the secondary mixture is less than 90nm, and the particle size d90 of the secondary mixture is less than 220 nm.
According to the preparation method of the cross-linking type environment-friendly textile coating ink, in the first step, parameters of a grinding machine used in the grinding process of the primary mixture are as follows: the rotating speed is 1300-1500 r/min, the linear speed of the dispersion disc is 15-18 m/s, the temperature in the cavity of the sand mill is 20-35 ℃, the size of the filling medium is 0.1-0.2 mm, and the aperture of the discharging gap is less than or equal to 50 mu m.
According to the preparation method, the invention also provides the application of the cross-linking type environment-friendly textile coating ink on the Epson EPS3200 spray head.
According to the cross-linking type environment-friendly textile coating ink, the invention also provides application of the cross-linking type environment-friendly textile coating ink to an Epson EPS3200 spray head.
The invention aims to provide a cross-linking type environment-friendly textile coating ink and a preparation method thereof, which enable the coating ink to reach a nanometer level by dispersion and grinding preparation process control and high-precision filtering process control, and solve the problems that the textile coating ink blocks a spray head and affects printing adaptability due to large particle size of coloring particles; the cross-linking agent, the high molecular polymer connecting material and other raw materials of the coating ink are used for synergistic interaction, and the reasonable raw material proportion is set, so that the color fastness and the color reduction degree of the textile coating ink are improved, and the coating ink is more stable, more durable and more vivid on the fabric; through membrane degassing filtration technology, remove the air residue in the textile coating ink, avoid gas microbubble to influence and print the adaptability, make the coating ink print more smoothly. In conclusion, the beneficial effects of the invention are as follows: the textile coating ink has small particle size, good use and storage stability, stable and smooth printing, no blockage of a nozzle and excellent color fastness to a printing fabric; the method can be widely applied to the ink-jet printing of the Epson spray head digital printing machine, and particularly has better matching property and adaptability to the Epson EPS3200 industrial spray head.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a cross-linking type environment-friendly textile coating ink which comprises the following raw materials in parts by weight:
1-10 parts of organic pigment, 1-10 parts of dispersing agent, 1-5 parts of wetting agent, 1-20 parts of high molecular polymer binder, 1-5 parts of cross-linking agent, 1-40 parts of water-soluble organic solvent, 0.05-0.5 part of bactericide, 0.05-1 part of adhesion promoter and 30-60 parts of deionized water.
The organic pigment can be selected from phthalocyanine blue 15:3, phthalocyanine blue 15:4, organic pigment red 8, organic pigment red 48:1, organic pigment red 48:2, organic pigment red 48:3, organic pigment red 48:4, organic pigment red 49:1, organic pigment red 53:1, organic pigment red 57:1, organic pigment red 81, organic pigment red 122, organic pigment red 146, organic pigment red 170, organic pigment red 176, organic pigment red 185, organic pigment red 254, organic pigment red 266, organic pigment violet 19, organic pigment violet 23, organic pigment yellow 1, organic pigment yellow 3, organic pigment yellow 12, organic pigment yellow 13, organic pigment yellow 14, organic pigment yellow 17, organic pigment yellow 65, organic pigment yellow 74, organic pigment yellow 81, organic pigment yellow 83, organic pigment yellow 110, organic pigment yellow 139, organic pigment yellow 150, organic pigment yellow 151, organic pigment yellow 1, organic pigment yellow 17, organic pigment yellow 65, organic pigment yellow 74, organic pigment yellow 83, organic pigment yellow 139, organic pigment yellow 150, organic pigment yellow 151, organic, Organic pigment yellow 155, organic pigment yellow 174, organic pigment yellow 180, organic pigment yellow 191, or carbon black.
The dispersant is a polymer with hydrophilic groups, and can be selected from high molecular polymers, such as any one or more of polyester, polyether, polyurethane or acrylate. Any one or more of BYK dispersant, EFKA dispersant, Lubrizol dispersant or TEGO dispersant can also be selected. Wherein the BYK dispersing agent is one or more of BYK auxiliaries of all relevant brands sold by Bike chemical (China) Limited company and agents thereof; the EFKA dispersant is one or more of all relevant trademarks of Basff EFKA auxiliaries sold by Basff (China) limited company and agents thereof; the Lubrizol dispersing agent is one or more of Lubrizol auxiliary agents of all relevant brands sold by Lubrizol Special chemical (Shanghai) Co., Ltd and the dealers thereof; TEGO dispersant refers to one or more of all relevant brands of Desgassy-Digao adjuvants sold by the winning Desgassy (China) Co., Ltd.
The wetting agent is one or more of nonionic surfactant, anionic surfactant, and zwitterionic surfactant, such as acetylenic diol, silicone, or acrylate.
The high molecular polymer binder is any one or more of polyethylene-vinyl acetate copolymer, styrene-acrylic acid copolymer, acrylate polymer, polyurethane and polycarbonate.
The cross-linking agent is any one or more of aliphatic, aromatic, amide, latent curing amine and urea substitute cross-linking agents. The cross-linking agent is a water-based closed isocyanate cross-linking agent, and the cross-linking agent is any one or more of Mitsui chemical B-820NP, B-7030, Langsheng chemical Trixene BI200 and Trixene BI 220.
In order to make the color fastness grade of the prepared coating ink higher, the invention adopts a molecular crosslinking technology, selects a specific crosslinking agent and a macromolecular polymer connecting material, and the functional group in the molecule of the crosslinking agent reacts with the macromolecular polymer connecting material and crosslinks the macromolecular chains of the macromolecular polymer connecting material, so that the linear or slightly branched macromolecules are converted into a three-dimensional network structure, thereby improving the performances of the coating ink, such as friction resistance, color fastness and the like.
In the invention, the water-soluble solvent is any one or more of ethanol, isopropanol, n-butanol, ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, butanediol, pentanediol, hexanediol, polyethylene glycol, dipropylene glycol, glycerol, sorbitol, diethylene glycol butyl ether and dipropylene glycol methyl ether. The bactericide is any one or more of imidazoles, thiazoles, isothiazolone derivatives, acylaniline, quaternary ammonium salts, phenols and biguanidine. The adhesion promoter is any one or more of resin adhesion promoters, silane coupling agents and titanate coupling agents.
The deionized water is high-purity deionized water, the conductivity of the deionized water is lower than 0.5us/cm, the pH value of the deionized water is 6.0-8.0, the deionized water is subjected to sterilization and bacteriostasis treatment before use, the sterilization and bacteriostasis treatment method can be ozone sterilization or autoclaving, and the deionized water can be selected by a person skilled in the art according to needs and is not described herein any more.
The materials used in the invention are all water-based environment-friendly materials, and the prepared coating ink is environment-friendly and harmless and can be directly contacted with a human body. Is suitable for industrial textile printing ink. Is suitable for cellulose fibers such as pure cotton, artificial cotton, hemp, modal, tencel, bamboo fiber and the like; wool and silk protein fibers; polyester, nylon, PU chemical fiber and other textile fabrics.
The invention also provides a preparation method of the cross-linking type environment-friendly textile coating ink, which comprises the following steps:
step one, preparing color paste
And respectively weighing the dispersing agent, the water-soluble organic solvent, the wetting agent, the bactericide and the deionized water according to the parts by weight, mixing for 0.5-1 h by using a dispersion machine, slowly adding the organic pigment, and continuously dispersing for 2-3 h to obtain a primary mixture.
And (3) grinding the primary mixture in a sand mill to obtain a secondary mixture. In the grinding process, the grinding time is 6.5-8 h, and the grinding temperature in a sand mill is not higher than 35 ℃;
and centrifuging the secondary mixture, and filtering after centrifuging to obtain the color paste. The rotating speed in the centrifugal process is 8000-10000 r/min; the filter membrane used for filtration was a 1.0 μm standard filter membrane.
In the process, the addition amount of the water-soluble organic solvent is 15-23% of the total amount of the water-soluble organic solvent, the addition amount of the wetting agent is 35-50% of the total amount of the wetting agent, and the addition amount of the deionized water is 48-57% of the total amount of the deionized water.
Step two preparation of textile coating ink
And respectively adding the rest of water-soluble organic solvent and the rest of deionized water according to the weight parts, uniformly mixing at normal temperature, adding the rest of wetting agent, and continuously uniformly mixing for 0.3-0.8 h to obtain a mixed material I.
Adding a high-molecular polymer connecting material into the mixed material I according to the parts by weight, and dispersing and mixing for 0.3-0.8 h at normal temperature; and adding the cross-linking agent and the adhesion promoter, and continuously dispersing and mixing for 0.3-0.8 h to obtain a second mixed material.
And adding the prepared color paste into the second mixed material, and emulsifying for 1.5-2.5 hours by using a shearing emulsifying machine to obtain the coarse ink.
And (3) finely filtering the coarse ink, and then performing membrane degassing filtration to prepare the finished product of the cross-linked environment-friendly textile coating ink.
In the invention, the filter membrane selected in the fine filtration process is a standard filter membrane with the diameter of 0.22 mu m.
Because the solubility of different gases in the liquid depends on the temperature and pressure conditions of the gas-liquid equilibrium point, the gas-liquid equilibrium value can be changed by changing the temperature or pressure conditions, and the required gas-liquid dissolution equilibrium value can be obtained. The amount of gas stored in the textile ink system can be calculated equivalently by a dissolved oxygen measuring method, so the technology of the invention adopts a membrane degassing technology to carry out degassing treatment on the dissolved gas in the coating ink system. In the invention, a Superphonic degassing membrane is selected as a degassing membrane in a membrane degassing device; the DO value of the dissolved oxygen content is measured by a Mettler dissolved oxygen tester, and the DO value of the dissolved oxygen content in the prepared textile coating ink is lower than 1 ppm; the problem that gas microbubbles are easily generated in the digital textile coating ink due to air residue to influence printing adaptability is solved.
The average particle size of the prepared coating ink is 100-120 nm, so that the problem that the printing head is easily blocked by the coating ink due to large particles is solved. The particle size of the product reaches the nanometer level, the product has excellent printing adaptability and printing color fastness on an industrial digital textile printing machine, the color fastness can reach 4 levels, the problems of fabric color fading due to washing and friction are solved, and the use and storage stability is high. In order to enable the particle size of the finally prepared coating ink to reach 100-120 nm, the parameters of a grinding machine used in the process of grinding the primary mixture are as follows: the rotating speed is 1300-1500 r/min, the linear speed of the dispersion disc is 15-18 m/s, the temperature in the cavity of the sand mill is 20-35 ℃, the size of the filling medium is 0.1-0.2 mm, and the aperture of the discharging gap is less than or equal to 50 mu m. The particle size d50 of the obtained secondary mixture is less than 90nm, d90 is less than 220nm, and the particle size detection in the invention uses a Malvern 3000 particle size tester.
The textile coating ink reaches the nanometer level through dispersion and grinding preparation process control and high-precision filtering process control; the color fastness and the color reduction degree of the textile coating ink are improved by carrying out synergistic interaction on the cross-linking agent, the high-molecular polymer connecting material and other raw materials of the coating ink and setting a reasonable raw material proportion; through the membrane degassing and filtering technology, air residues in the textile coating ink are removed, and the printing of the textile coating ink is smoother. Therefore, indexes such as granularity, color fastness, color reduction degree, air residue and the like of the textile coating ink prepared by the invention can be suitable for the Epson spray head, particularly have higher adaptability and matching property with the Epson EPS3200 spray head, and meet the use requirements of 3200 spray holes of the Epson EPS3200 spray head, 600dpi spray hole spacing, 3.5PL minimum ink drops and 24K maximum ignition frequency, so that the Epson EPS3200 spray head has better color output, printing precision and printing speed, and exerts the maximum spray printing advantage thereof, thereby improving the quality of spray printing products.
In order to verify the crosslinking-type eco-friendly textile coating ink of the present invention, the coating ink was prepared by the above-described preparation method of the present invention, and the following examples were set up. And the textile coating ink prepared in each example is subjected to performance measurement at 25 ℃, and the performance parameters comprise: the surface tension, viscosity, jet printing fluency, conductivity, dissolved oxygen content, dry friction resistance color fastness grade and wet friction color fastness grade, and the measurement results are shown in the table I.
In the invention, a BZY-1 surface tension tester is selected for measuring surface tension, an LVDV-II rotational viscometer is selected for measuring viscosity, a century wind EPS3200 printing machine is selected for measuring jet printing smoothness, a Mettler FE30-K conductivity meter is selected for measuring conductivity, a Mettler FG4 dissolved oxygen tester is selected for measuring dissolved oxygen content, and a ZQ-006 dry-wet friction color fastness tester is selected for measuring friction fastness.
Example 1 preparation of blue textile coating ink
Step one, preparing color paste
20g of dispersant BYK-190, 5g of water-soluble organic solvent glycerol, 0.5g of wetting agent Surfynol104E, 0.1g of antiseptic bactericide Proxel GXL and 54.4g of deionized water are respectively weighed, uniformly mixed by a dispersion machine, and then 20g of phthalocyanine blue 15:3 is slowly added to obtain a primary mixture after being dispersed for 2 hours.
And (3) grinding the primary mixture in a sand mill for 7 hours to obtain a secondary mixture. And centrifuging the secondary mixture, and filtering after centrifuging to obtain the color paste.
Step two preparation of textile coating ink
Respectively weighing 10g of water-soluble organic solvent ethylene glycol, 10g of water-soluble organic solvent glycerol, 2g of water-soluble organic solvent 1.2-hexanediol and 36.1g of deionized water, uniformly mixing at normal temperature, then adding 0.5g of wetting agent Surfynol465 and 0.2g of wetting agent Dynol 960, and continuously mixing uniformly for 0.5h to obtain a first mixed material.
Adding 16g of aliphatic polyurethane dispersion vehicle into the first mixed material according to the weight parts, and dispersing and mixing for 0.5h at normal temperature; and then adding 5g of water-soluble cross-linking agent and 0.2g of adhesion promoter, and continuing to disperse and mix for 0.5h to obtain a mixed material II.
And adding the prepared color paste into the second mixed material, and emulsifying for 2 hours by using a shearing emulsifying machine to obtain the coarse ink.
And (3) finely filtering the coarse ink, and then performing membrane degassing filtration to prepare the finished product of the cross-linked environment-friendly textile coating ink.
Example 2 preparation of Red textile coating ink
Step one, preparing color paste
Respectively weighing 25g of dispersant SolsperseWV400, 5g of water-soluble organic solvent glycerol, 0.5g of wetting agent Surfynol104E, 0.1g of antiseptic bactericide Proxel GXL and 49.4g of deionized water, uniformly mixing by using a dispersing machine, slowly adding 20g of pigment Red 122, and dispersing for 2.5h to obtain a primary mixture.
And (3) grinding the primary mixture in a sand mill for 7 hours to obtain a secondary mixture. And centrifuging the secondary mixture, and filtering after centrifuging to obtain the color paste.
Step two preparation of textile coating ink
Respectively weighing 10g of water-soluble organic solvent ethylene glycol, 10g of water-soluble organic solvent glycerol, 3g of water-soluble organic solvent 1.2-hexanediol and 31.1g of deionized water, uniformly mixing at normal temperature, then adding 0.5g of wetting agent Surfynol465 and 0.2g of wetting agent Dynol 960, and continuously mixing uniformly for 0.5h to obtain a first mixed material.
Adding 15g of aliphatic polyurethane dispersion vehicle into the first mixed material according to the weight parts, and dispersing and mixing for 0.5h at normal temperature; and then adding 5g of water-soluble cross-linking agent and 0.2g of adhesion promoter, and continuing to disperse and mix for 0.5h to obtain a mixed material II.
And adding the prepared color paste into the second mixed material, and emulsifying for 2 hours by using a shearing emulsifying machine to obtain the coarse ink.
And (3) finely filtering the coarse ink, and then performing membrane degassing filtration to prepare the finished product of the cross-linked environment-friendly textile coating ink.
Example 3 preparation of yellow textile coating ink
Step one, preparing color paste
25g of dispersant BYK-190, 5g of water-soluble organic solvent glycerol, 0.5g of wetting agent Surfynol104E, 0.1g of antiseptic bactericide Proxel GXL and 49.4g of deionized water are respectively weighed, uniformly mixed by a dispersion machine, and then 20g of pigment yellow 155 is slowly added for dispersion for 2 hours to obtain a primary mixture.
And (3) grinding the primary mixture in a sand mill for 7 hours to obtain a secondary mixture. And centrifuging the secondary mixture, and filtering after centrifuging to obtain the color paste.
Step two preparation of textile coating ink
Respectively weighing 10g of water-soluble organic solvent ethylene glycol, 10g of water-soluble organic solvent glycerol, 2g of water-soluble organic solvent 1.2-hexanediol and 32.1g of deionized water, uniformly mixing at normal temperature, then adding 0.5g of wetting agent Surfynol465 and 0.2g of wetting agent Dynol 960, and continuously mixing uniformly for 0.5h to obtain a first mixed material.
Adding 15g of aliphatic polyurethane dispersion vehicle into the first mixed material according to the weight parts, and dispersing and mixing for 0.5h at normal temperature; and then adding 5g of water-soluble cross-linking agent and 0.2g of adhesion promoter, and continuing to disperse and mix for 0.5h to obtain a mixed material II.
And adding the prepared color paste into the second mixed material, and emulsifying for 2 hours by using a shearing emulsifying machine to obtain the coarse ink.
And (3) finely filtering the coarse ink, and then performing membrane degassing filtration to prepare the finished product of the cross-linked environment-friendly textile coating ink.
Example 4: preparation of black textile coating ink
Step one, preparing color paste
Respectively weighing 25g of dispersant SolsperseWV100, 5g of water-soluble organic solvent glycerol, 0.5g of wetting agent Surfynol104E, 0.1g of antiseptic bactericide Proxel GXL and 49.4g of deionized water, uniformly mixing by using a dispersing machine, slowly adding 20g of carbon black, and dispersing for 2 hours to obtain a primary mixture.
And (3) grinding the primary mixture in a sand mill for 7 hours to obtain a secondary mixture. And centrifuging the secondary mixture, and filtering after centrifuging to obtain the color paste.
Step two preparation of textile coating ink
Respectively weighing 10g of water-soluble organic solvent ethylene glycol, 10g of water-soluble organic solvent glycerol, 3g of water-soluble organic solvent 1.2-hexanediol and 32g of deionized water, uniformly mixing at normal temperature, then adding 0.5g of wetting agent Surfynol465 and 0.3g of wetting agent Dynol 960, and continuously uniformly mixing for 0.5h to obtain a first mixed material.
Adding 16g of aliphatic polyurethane dispersion vehicle into the first mixed material according to the weight parts, and dispersing and mixing for 0.5h at normal temperature; and then adding 5g of water-soluble cross-linking agent and 0.2g of adhesion promoter, and continuing to disperse and mix for 0.5h to obtain a mixed material II.
And adding the prepared color paste into the second mixed material, and emulsifying for 2 hours by using a shearing emulsifying machine to obtain the coarse ink.
And (3) finely filtering the coarse ink, and then performing membrane degassing filtration to prepare the finished product of the cross-linked environment-friendly textile coating ink.
TABLE-results of measurements of properties of textile coating inks in examples
As can be seen from the data in the table above, the surface tension and viscosity of the coating ink prepared by the method are 28-29 mN/cm and 3-4 mpa.s, which indicates that the surface tension and viscosity of the coating ink are suitable to control; the jet printing fluency is that 3000ml of ink is continuously printed without breaking, and the jet printing fluency performance is excellent; the electrical conductivity is less than 660 mu m/cm, which shows that the raw materials selected by the coating ink have high purity, small damage to a printing nozzle and high stability of the ink; the content of dissolved oxygen is lower than 1ppm, which shows that the effect obtained by adopting the membrane degassing and filtering technology is better, and the coating ink is prevented from generating gas microbubbles; the dry rubbing fastness grade reaches 4 grades, the wet rubbing fastness grade is above 3 grades, which shows that the color fastness of the coating ink on the printing fabric is higher. The average particle size of the coating ink is 100-120 nm, the average particle size is 80-100 nm smaller than that of similar products, and the stability is 6-8 months, so that the special parameters of the sand grinding machine used in the invention are reasonably set, the process control is better, and the formula system is complete.
Of course, the inventor does not only carry out the above four examples, and after hundreds of times of raw material weight part proportioning tests, the inventor finds that the raw materials in parts by weight are: 3-8 parts of organic pigment, 3-8 parts of dispersing agent, 2-4 parts of wetting agent, 8-15 parts of high molecular polymer connecting material, 2-4 parts of cross-linking agent, 10-25 parts of water-soluble organic solvent, 0.1-0.3 part of bactericide, 0.1-0.5 part of adhesion promoter and 42-50 parts of deionized water.
In conclusion, the coating ink achieves the nanometer level through the dispersion and grinding preparation process control and the high-precision filtering process control, and the problems that the nozzle is blocked and the printing adaptability is influenced due to the large particle size of the coloring particles of the textile coating ink are solved; the cross-linking agent, the high molecular polymer connecting material and other raw materials of the coating ink are used for synergistic interaction, and the reasonable raw material proportion is set, so that the color fastness and the color reduction degree of the textile coating ink are improved, and the coating ink is more stable, more durable and more vivid on the fabric; through membrane degassing filtration technology, remove the air residue in the textile coating ink, avoid gas microbubble to influence and print the adaptability, make the coating ink print more smoothly. In conclusion, the beneficial effects of the invention are as follows: the textile coating ink has small particle size, good use and storage stability, stable and smooth printing, no blockage of a nozzle and excellent color fastness to a printing fabric; the method can be widely applied to the ink-jet printing of the Epson spray head digital printing machine, and particularly has better matching property and adaptability to the Epson EPS3200 industrial spray head.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The cross-linking type environment-friendly textile coating ink is characterized by comprising the following raw materials in parts by weight: 1-10 parts of organic pigment, 1-10 parts of dispersing agent, 1-5 parts of wetting agent, 1-20 parts of high molecular polymer binder, 1-5 parts of cross-linking agent, 1-40 parts of water-soluble organic solvent, 0.05-0.5 part of bactericide, 0.05-1 part of adhesion promoter and 30-60 parts of deionized water.
2. The cross-linking type environment-friendly textile coating ink as claimed in claim 1, which is characterized by comprising the following raw materials in parts by weight: 3-8 parts of organic pigment, 3-8 parts of dispersing agent, 2-4 parts of wetting agent, 8-15 parts of high molecular polymer binder, 2-4 parts of cross-linking agent, 10-25 parts of water-soluble organic solvent, 0.1-0.3 part of bactericide, 0.1-0.5 part of adhesion promoter and 42-50 parts of deionized water.
3. The cross-linking type environment-friendly textile coating ink as claimed in claim 2, wherein the high molecular polymer binder is any one or more of polyethylene-vinyl acetate copolymer, styrene-acrylic acid copolymer, acrylate polymer, polyurethane and polycarbonate.
4. The crosslinking-type environment-friendly textile coating ink as claimed in claim 2, wherein the crosslinking agent is any one or more of aliphatic, aromatic, amide-based, latent curing amine and urea substitute crosslinking agents.
5. The crosslinked environment-friendly textile coating ink according to claim 4, wherein the crosslinking agent is an isocyanate crosslinking agent.
6. A method for preparing the crosslinking-type environment-friendly textile coating ink of claim 2, comprising the steps of:
step one, preparing color paste
Respectively weighing the dispersing agent, the water-soluble organic solvent, the wetting agent, the bactericide and the deionized water according to the weight parts, mixing, adding the organic pigment, and continuously dispersing to obtain a primary mixture; the addition amount of the water-soluble organic solvent is 15-23% of the total amount of the water-soluble organic solvent, the addition amount of the wetting agent is 35-50% of the total amount of the wetting agent, and the addition amount of the deionized water is 48-57% of the total amount of the deionized water;
grinding the primary mixture to obtain a secondary mixture;
centrifuging the secondary mixture, and filtering after centrifuging to obtain color paste;
step two preparation of textile coating ink
Respectively adding the rest of the water-soluble organic solvent and the rest of the deionized water according to the weight parts, uniformly mixing, adding the rest of the wetting agent, and continuously uniformly mixing to obtain a mixed material I;
adding the high molecular polymer connecting material into the mixed material I, adding the cross-linking agent and the adhesion promoter after mixing, and continuously mixing to obtain a mixed material II;
adding the prepared color paste into the second mixed material, and emulsifying to obtain coarse ink;
and finely filtering the coarse ink, and then performing membrane degassing filtration to prepare the crosslinking type environment-friendly textile coating ink.
7. The method for preparing the crosslinked environment-friendly textile coating ink as claimed in claim 6, wherein in the first step, the secondary mixture has a particle size d50 of less than 90nm and a particle size d90 of less than 220 nm.
8. The method for preparing a cross-linking type environment-friendly textile coating ink as claimed in claim 6, wherein in the step one, parameters of a grinder used in the grinding process of the primary mixture are as follows: the rotating speed is 1300-1500 r/min, the linear speed of the dispersion disc is 15-18 m/s, the temperature in the cavity of the sand mill is 20-35 ℃, the size of the filling medium is 0.1-0.2 mm, and the aperture of the discharging gap is less than or equal to 50 mu m.
9. The application of the cross-linking type environment-friendly textile coating ink prepared by the method of any one of claims 6 to 8 to an Epson EPS3200 spray head.
10. The use of the cross-linked environment-friendly textile coating ink as defined in any one of claims 1 to 5 in an Epson EPS3200 spray head.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113026384A (en) * | 2021-03-18 | 2021-06-25 | 常州喜莱维纺织科技有限公司 | Fabric micro-printing method |
| CN114059365A (en) * | 2021-12-23 | 2022-02-18 | 江苏德旺数码科技有限公司 | Dye composition for digital printing |
| CN117802807A (en) * | 2024-03-01 | 2024-04-02 | 山东力美喷墨科技有限公司 | High-sun-proof pigment type inkjet ink for digital printing and preparation method thereof |
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2019
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113026384A (en) * | 2021-03-18 | 2021-06-25 | 常州喜莱维纺织科技有限公司 | Fabric micro-printing method |
| CN114059365A (en) * | 2021-12-23 | 2022-02-18 | 江苏德旺数码科技有限公司 | Dye composition for digital printing |
| CN117802807A (en) * | 2024-03-01 | 2024-04-02 | 山东力美喷墨科技有限公司 | High-sun-proof pigment type inkjet ink for digital printing and preparation method thereof |
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