CN110205838B - Cyan ink-jet ink for ink-jet printing of polyester fabric, preparation process thereof and ink-jet printing method - Google Patents
Cyan ink-jet ink for ink-jet printing of polyester fabric, preparation process thereof and ink-jet printing method Download PDFInfo
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- CN110205838B CN110205838B CN201910522707.1A CN201910522707A CN110205838B CN 110205838 B CN110205838 B CN 110205838B CN 201910522707 A CN201910522707 A CN 201910522707A CN 110205838 B CN110205838 B CN 110205838B
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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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- 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
- D06P1/5207—Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- D06P1/5214—Polymers of unsaturated compounds containing no COOH groups or functional derivatives thereof
- D06P1/5242—Polymers of unsaturated N-containing compounds
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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
- D06P1/655—Compounds containing ammonium groups
- D06P1/66—Compounds containing ammonium groups containing quaternary ammonium groups
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- D—TEXTILES; PAPER
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- 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
- D06P1/673—Inorganic compounds
- D06P1/67333—Salts or hydroxides
- D06P1/6735—Salts or hydroxides of alkaline or alkaline-earth metals with anions different from those provided for in D06P1/67341
- D06P1/67366—Phosphates or polyphosphates
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/34—Material containing ester groups
- D06P3/52—Polyesters
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- 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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Abstract
The invention provides a preparation process of cyan ink-jet ink for ink-jet printing of polyester fabrics, which comprises the following steps: firstly, dispersing a cyan pigment to prepare a cyan pigment suspension, then adding sodium dodecyl sulfate and an aluminum isopropoxide solution, stirring for reaction to prepare a core-shell type cyan pigment, adding the core-shell type cyan pigment into a Tris-HCl buffer solution of dopamine, and stirring for reaction to prepare a multilayer coated cyan pigment; mixing the cyan pigment color paste with Tween 80 and deionized water, stirring to obtain cyan pigment color paste, adding the cyan pigment color paste into a mixed solution of ethylene glycol and deionized water, uniformly mixing, sequentially adding a cross-linking agent FH, citric acid, sodium alginate, alkyl glycoside, sorbitol and triethanolamine, uniformly stirring, and finally sequentially carrying out microfiltration treatment and nanofiltration desalination treatment to obtain the cyan ink-jet ink. The cyan ink-jet ink prepared by the invention has good stability and excellent weather resistance, and has high color fastness when being used for ink-jet printing of polyester fabrics.
Description
The technical field is as follows:
the invention relates to the field of ink-jet printing, in particular to cyan ink-jet ink for polyester fabric ink-jet printing, a preparation process thereof and an ink-jet printing method.
Background art:
the three primary colors are three independent colors, any one of the three primary colors cannot be formed by mixing the other two primary colors, and the other colors can be formed by mixing the three primary colors according to a certain proportion. The three primary colors are divided into additive three primary colors and subtractive three primary colors, wherein the additive three color stimulus values are used for additive color mixing, namely the three primary colors specified by a red, green and blue tristimulus value color representation system, and are high-purity red, green and blue light. However, most colors are obtained by subtractive mixing, such as color printing, color photography, and color television, which uses subtractive mixing of colors to control color. The three primary colors referred to for dyes, pigments and printing are subtractive primary colors, typically yellow, cyan and magenta. As the three primary colors, the chromatograms of yellow, magenta and cyan must be pure, and also must have good compatibility, level-dyeing property, certain sensitivity to chemicals and temperature, and high color fastness. Therefore, in the technical field of digital printing of textiles, how to prepare primary color ink-jet ink with excellent level-dyeing property and color fastness is also a key point.
The ink-jet printing technology is a printing process which is gradually developed in recent years, and the ink-jet printing technology refers to a technology that a nozzle absorbs a probe reagent from a microporous plate and then moves to a pretreatment technology, and liquid drops are sprayed on the surface of a substrate by the power of an ejector in the form of heat sensitivity or sound control and the like. Ink jet printers eject fine droplets of black or color ink onto the fabric surface, and most ink jet printers output medium and high resolution images by using a large number of nozzles and ejecting the same area multiple times. However, most of the ink-jet printers use ink which is easily deteriorated, resulting in poor image quality, and therefore, how to prepare an ink-jet ink with excellent stability becomes a research hotspot, which has important significance for improving the printing quality of fabrics and the stability and durability of image quality.
The following requirements are required for the ink-jet printing inks used: high glossiness, good water resistance, light resistance, weathering resistance and coating fastness; the ink-jet printing ink has the advantages of short drying time, good intermittent and continuous printing performance, good storage stability, strong anti-permeation, anti-friction and anti-pollution capabilities, no bubble generation, no corrosion to a nozzle of an ink-jet printer and high safety. The general ink-jet printing ink mainly comprises colorant, solvent, surfactant, bactericide, drier, pH regulator and other additives. Among them, the colorant imparts a certain color to the ink, and has a direct influence on the quality of the ink, and generally, a colorant having good solubility stability is selected, and the colorant has good weather resistance, certain water resistance, and excellent heat resistance. The solvent comprises water solubility and oil solubility, and can improve the stability of the ink, so that the viscosity, the surface tension and the like of the ink are not influenced by the outside. The surfactants can both adjust the surface tension of the ink so that the ink has a surface tension suitable for printing. The bactericide can effectively inhibit the breeding of microorganisms in water and prevent the blockage of the spray head caused by the property change of the ink. The drier can effectively promote the drying of the ink. The pH regulator can make the ink have certain alkalinity, and can effectively prevent the ink from corroding the nozzle. The current common ink-jet ink is dye ink and pigment ink, the dye ink is molecular level full-dissolved ink, the cost is low, but the ink is not waterproof and has poor weather resistance; the pigment ink has good weather resistance, certain waterproof performance and high color fastness, but the glossiness is poor, and the preparation cost is high.
The Chinese patent application (application number 200710024154.4) discloses a method for improving the color fastness of ink-jet printing pigment ink, belonging to the technical field of textile printing and dyeing. Is characterized in that pigment color paste, polyol, adhesive, cross-linking agent and surfactant are taken, the components are sequentially added into a container according to the proportion, water is added for even mixing, and the superfine pigment ink is prepared by stirring and filtering; and (3) spraying and printing the superfine pigment ink on the fabric by using an ink-jet printing machine, and then drying, baking and fixing the color. Adding a proper amount of cross-linking agent into ink-jet printing pigment ink, uniformly mixing, and then spraying and printing the mixture on a fabric by an ink-jet printing machine; in the process of baking and fixing color, a continuous, compact and smooth printing film is formed on the surface of the fabric by utilizing the crosslinking film forming performance of the crosslinking agent, so that the ultrafine pigment particles in the ink can resist dry and wet friction, and the color fastness of the ultrafine pigment particles in the ink on the fabric is improved on the premise of not influencing the jet performance of the ink. However, the ink prepared by the method has poor stability and weather resistance.
The Chinese patent application (application No. 200610075015.X) discloses a pigment type aqueous ink composition and a manufacturing method thereof, in particular to solve the problem of the re-flocculation of pigment particles. The pigment type water-based ink composition comprises 5-15 wt% of pigment color paste, 15-35 wt% of solvent and the balance of pure water; the pigment color paste is composed of 20-40 wt% of pigment, 10-30 wt% of dispersing agent and the balance of deionized water. The dispersant is preferably a flexible polymeric binder: styrene-a-methylstyrene-acrylic acid polymers. The manufacturing method comprises the steps of preparing a pigment color paste in advance and preparing a pigment-type aqueous ink composition in the later. Especially, hydrophilic flexible polymer adhesive is added into the pigment color paste with even dispersion to form nano-scale particle capsules, so as to prepare the stable pigment color paste. The ink has excellent functions of excellent water resistance, light resistance and oxidation resistance. But its hiding power was poor and its gloss was not good.
The invention content is as follows:
the invention aims to provide a preparation process of cyan ink-jet ink for polyester fabric ink-jet printing, aiming at the defects of the prior art, the method is simple to operate, and the prepared cyan ink-jet ink is good in stability, excellent in weather resistance, high in color fastness, strong in covering power and good in glossiness, and can be used for polyester fabric surface ink-jet printing.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a preparation process of cyan ink-jet ink for polyester fabric ink-jet printing comprises the following steps:
(1) mixing and stirring a cyan pigment, span80 and deionized water for 50min to prepare a cyan pigment suspension; dissolving aluminum isopropoxide in isopropanol, adding sodium dodecyl sulfate, continuously stirring to obtain a solution A, dropwise adding the solution A into a cyan pigment suspension, stirring at normal temperature for 30min, then transferring into a hydrothermal kettle, reacting at 120 ℃ for 2-6h, cooling to room temperature after the reaction is finished, filtering, and drying the solid to obtain a core-shell type cyan pigment;
(2) redispersing the prepared core-shell cyan pigment in deionized water under the action of a silane coupling agent, stirring and mixing for 30min to prepare a suspension A, dissolving dopamine hydrochloride in a Tris-HCl buffer solution, stirring and mixing, then dropwise adding the mixture into the suspension A, stirring and mixing for 1-4h at room temperature, then filtering, and drying the solid to prepare the multilayer coated cyan pigment;
(3) stirring and mixing the multilayer coated cyan pigment prepared in the step (2) with deionized water, then adding Tween 80, and stirring and processing at the rotating speed of 1500rpm for 3 hours to prepare cyan pigment color paste; adding the prepared cyan pigment color paste into a mixed solution of ethylene glycol and deionized water, stirring and mixing uniformly, sequentially adding a cross-linking agent FH, citric acid, sodium alginate, alkyl glycoside, sorbitol and triethanolamine, stirring and mixing for 20-60min, filtering by using a 0.65-micron mixed fiber filter membrane, and finally desalting by using a polyamide nanofiltration membrane to obtain the cyan ink-jet ink.
Preferably, in the step (1), the mass ratio of the cyan pigment, the span80, the aluminum isopropoxide and the sodium dodecyl sulfate is 10: (0.25-0.35): 6: 0.01.
preferably, in the step (2), the mass ratio of the core-shell cyan pigment, the silane coupling agent and the dopamine hydrochloride is 10: 0.012: 0.3-0.7.
Preferably, in the step (2), the concentration of the Tris-HCl buffer solution is 10mmol/L, and the pH value is 5.
Preferably, in the step (3), the mass ratio of the multi-layer coated cyan pigment to the tween 80 is 1: (0.0066-0.0073).
Preferably, in the step (4), the amounts of the cyan pigment paste, the ethylene glycol, the deionized water, the crosslinking agent FH, the citric acid, the sodium alginate, the alkyl glycoside, the sorbitol and the triethanolamine are, in parts by weight, as follows: 8-16 parts, 6-10 parts, 10-20 parts, 1-5 parts, 1-2 parts, 2-6 parts, 0.1-0.4 part, 1-3 parts and 0.5-1 part.
In order to better achieve the above purpose, the invention also provides a printing method of the cyan ink-jet ink on the surface of polyester fabric, which specifically comprises the following steps:
firstly, cleaning a polyester fabric with clear water, adding the cleaned polyester fabric into a pretreating agent, carrying out padding treatment, and then drying the treated polyester fabric to obtain a pretreated polyester fabric;
secondly, placing the cyan ink-jet ink prepared by the method in an ink-jet printer, carrying out ink-jet printing treatment on the polyester fabric under the conditions that the temperature is 25 +/-5 ℃ and the relative humidity is 60-75%, wherein the resolution is set to be 720dpi, and after the ink-jet printing is finished, carrying out baking treatment on the polyester fabric at 120 ℃ for 5min to prepare the printed polyester fabric.
Preferably, in the first step, the polyester fabric is 80g/m2The plain weave fabric has 32tex of warp and weft yarns, 282 warps/10 cm of warp density and 240 wefts/10 cm of weft density.
Preferably, in the first step, the pretreating agent comprises, by weight, 1-3 parts of nano-hydroxyapatite, 1-4 parts of dodecyltrimethylammonium chloride, 1-2 parts of polyvinylpyrrolidone, 5-11 parts of ethanol, and 30-60 parts of deionized water.
Preferably, the average particle size of the nano-hydroxyapatite is 30-50 nm.
The invention has the following beneficial effects:
in order to solve the technical problem, the invention firstly disperses cyan pigment to prepare suspension, and then coats alumina on the surface of the suspension, thereby improving the covering power and the tinting strength of the cyan pigment, but the polarity of the cyan pigment coated by the alumina is larger, the cyan pigment is difficult to uniformly disperse in water, and the bonding performance of the cyan pigment coated by the alumina and a fabric is poorer, therefore, the invention prepares a polydopamine modification layer on the surface of the alumina layer to form a multi-layer coated cyan pigment, the polydopamine modification layer can not only disperse well in water, but the prepared ink-jet ink can effectively permeate on the surface of a polyester fabric to form a high-quality printing pattern;
when the prepared ink-jet ink is used for ink-jet printing of polyester fabrics, the surface of the fabrics is pretreated by a pretreatment agent, nano-hydroxyapatite is added into the pretreatment agent, the surface of the nano-hydroxyapatite has more active groups, a uniform film is formed on the surface of the polyester fabrics, the compactness of the polyester fabrics is effectively improved, and the pretreated surfaces of the fabrics have active groups such as hydroxyl groups and the like, and can be crosslinked with the active groups in the ink-jet ink, so that a printing pattern is formed on the surface of the polyester fabrics. And the ink-jet ink has good stability, good color fastness when being used for ink-jet printing of polyester fabrics, and no influence on the strength and the flexibility of the fabrics.
The specific implementation mode is as follows:
in order to better understand the present invention, the following examples further illustrate the invention, the examples are only used for explaining the invention, not to constitute any limitation of the invention.
The following examples used the following main raw materials and specifications:
span80 chemical purity, Tianjin, Tianda chemical reagent factory. Silane coupling agent: KH550, silane coupling agent, Jiangsu and Yuanhuan chemical Co. Dopamine hydrochloride: purchased from Hubei technology Kangyuan Co., Ltd, and is an off-white crystal with purity of more than 99 percent. Citric acid: analytically pure, Shanghai national drug group chemical reagent Co. Sodium alginate: number average molecular weight 35775, a ratio of number average molecular weight to weight average molecular weight of 1.392, a mass ratio of B-n mannuronic acid (M) units to a-L-guluronic acid (G) units of 0.32, food grade, available from Qingdao Mingyue algae group, Inc. Alkyl glycoside: the carbon chain length is 8-10, Shanghai Kai chemical Co. Sorbitol: analytically pure, Shanghai national drug group chemical reagent Co. Polyvinylpyrrolidone: analytically pure, Shanghai national drug group chemical reagent Co.
Example 1
A preparation process of cyan ink-jet ink for polyester fabric ink-jet printing comprises the following steps:
(1) mixing 10 parts of cyan pigment, 0.25 part of span80 and deionized water, stirring and treating for 50min to prepare a cyan pigment suspension; dissolving 6 parts of aluminum isopropoxide in isopropanol, adding 0.01 part of sodium dodecyl sulfate, continuously stirring to obtain a solution A, dropwise adding the solution A into a cyan pigment suspension, stirring for 30min at normal temperature, then transferring into a hydrothermal kettle, reacting for 2h at 120 ℃, cooling to room temperature after the reaction is finished, filtering, and drying the solid to obtain a core-shell type cyan pigment;
(2) re-dispersing 10 parts of the prepared core-shell type cyan pigment in deionized water under the action of 0.012 part of silane coupling agent, stirring and mixing for 30min to prepare a suspension A, dissolving 0.3 part of dopamine hydrochloride in Tris-HCl buffer solution, stirring and mixing, then dropwise adding the mixture into the suspension A, stirring and mixing for 1h at room temperature, then filtering, and drying the solid to prepare the multilayer coated cyan pigment;
(3) stirring and mixing 10 parts of the multilayer coated cyan pigment prepared in the step (2) with deionized water, then adding 0.066 part of Tween 80, and stirring and processing at the rotating speed of 1500rpm for 3 hours to prepare cyan pigment color paste; adding 8 parts of the prepared cyan pigment color paste into a mixed solution of 6 parts of ethylene glycol and 10 parts of deionized water, stirring and mixing uniformly, sequentially adding 1 part of a cross-linking agent FH, 1 part of citric acid, 2 parts of sodium alginate, 0.1 part of alkyl glycoside, 1 part of sorbitol and 0.5 part of triethanolamine, stirring and mixing for 20min, filtering by adopting a 0.65-micron mixed fiber filter membrane, and finally desalting by adopting a polyamide nanofiltration membrane to prepare the cyan ink-jet ink.
Example 2
A preparation process of cyan ink-jet ink for polyester fabric ink-jet printing comprises the following steps:
(1) mixing 10 parts of cyan pigment, 0.35 part of span80 and deionized water, stirring and treating for 50min to prepare a cyan pigment suspension; dissolving 6 parts of aluminum isopropoxide in isopropanol, adding 0.01 part of sodium dodecyl sulfate, continuously stirring to obtain a solution A, dropwise adding the solution A into a cyan pigment suspension, stirring for 30min at normal temperature, transferring into a hydrothermal kettle, reacting for 6h at 120 ℃, cooling to room temperature after the reaction is finished, filtering, and drying the solid to obtain a core-shell type cyan pigment;
(2) re-dispersing 10 parts of the prepared core-shell type cyan pigment in deionized water under the action of 0.012 part of silane coupling agent, stirring and mixing for 30min to prepare a suspension A, dissolving 0.7 part of dopamine hydrochloride in Tris-HCl buffer solution, stirring and mixing, then dropwise adding the mixture into the suspension A, stirring and mixing for 4h at room temperature, then filtering, and drying the solid to prepare the multilayer coated cyan pigment;
(3) stirring and mixing 10 parts of the multilayer coated cyan pigment prepared in the step (2) with deionized water, then adding 0.073 part of tween 80, and stirring and processing at the rotating speed of 1500rpm for 3 hours to prepare cyan pigment color paste; adding 16 parts of the prepared cyan pigment color paste into a mixed solution of 10 parts of ethylene glycol and 20 parts of deionized water, stirring and mixing uniformly, sequentially adding 5 parts of a cross-linking agent FH, 2 parts of citric acid, 6 parts of sodium alginate, 0.4 part of alkyl glycoside, 3 parts of sorbitol and 1 part of triethanolamine, stirring and mixing for 60min, filtering by using a 0.65-micron mixed fiber filter membrane, and finally desalting by using a polyamide nanofiltration membrane to obtain the cyan ink-jet ink.
Example 3
A preparation process of cyan ink-jet ink for polyester fabric ink-jet printing comprises the following steps:
(1) mixing 10 parts of cyan pigment, 0.28 part of span80 and deionized water, stirring and treating for 50min to prepare a cyan pigment suspension; dissolving 6 parts of aluminum isopropoxide in isopropanol, adding 0.01 part of sodium dodecyl sulfate, continuously stirring to obtain a solution A, dropwise adding the solution A into a cyan pigment suspension, stirring for 30min at normal temperature, transferring into a hydrothermal kettle, reacting for 3h at 120 ℃, cooling to room temperature after the reaction is finished, filtering, and drying the solid to obtain a core-shell type cyan pigment;
(2) re-dispersing 10 parts of the prepared core-shell type cyan pigment in deionized water under the action of 0.012 part of silane coupling agent, stirring and mixing for 30min to prepare a suspension A, dissolving 0.4 part of dopamine hydrochloride in Tris-HCl buffer solution, stirring and mixing, then dropwise adding the mixture into the suspension A, stirring and mixing for 1.5h at room temperature, then filtering, and drying the solid to prepare the multilayer coated cyan pigment;
(3) stirring and mixing 10 parts of the multilayer coated cyan pigment prepared in the step (2) with deionized water, then adding 0.068 part of Tween 80, and stirring and processing at the rotating speed of 1500rpm for 3 hours to prepare cyan pigment color paste; adding 10 parts of the prepared cyan pigment color paste into a mixed solution of 7 parts of ethylene glycol and 12 parts of deionized water, stirring and mixing uniformly, sequentially adding 2 parts of a cross-linking agent FH, 1.2 parts of citric acid, 3 parts of sodium alginate, 0.2 part of alkyl glycoside, 1.5 parts of sorbitol and 0.6 part of triethanolamine, stirring and mixing for 30min, filtering by adopting a 0.65-micron mixed fiber filter membrane, and finally desalting by adopting a polyamide nanofiltration membrane to prepare the cyan ink-jet ink.
Example 4
A preparation process of cyan ink-jet ink for polyester fabric ink-jet printing comprises the following steps:
(1) mixing 10 parts of cyan pigment, 0.3 part of span80 and deionized water, stirring and treating for 50min to prepare a cyan pigment suspension; dissolving 6 parts of aluminum isopropoxide in isopropanol, adding 0.01 part of sodium dodecyl sulfate, continuously stirring to obtain a solution A, dropwise adding the solution A into a cyan pigment suspension, stirring for 30min at normal temperature, transferring into a hydrothermal kettle, reacting for 4h at 120 ℃, cooling to room temperature after the reaction is finished, filtering, and drying the solid to obtain a core-shell type cyan pigment;
(2) re-dispersing 10 parts of the prepared core-shell type cyan pigment in deionized water under the action of 0.012 part of silane coupling agent, stirring and mixing for 30min to prepare a suspension A, dissolving 0.5 part of dopamine hydrochloride in Tris-HCl buffer solution, stirring and mixing, then dropwise adding the mixture into the suspension A, stirring and mixing for 2h at room temperature, then filtering, and drying the solid to prepare the multilayer coated cyan pigment;
(3) stirring and mixing 10 parts of the multilayer coated cyan pigment prepared in the step (2) with deionized water, then adding 0.07 part of Tween 80, and stirring and processing at the rotating speed of 1500rpm for 3 hours to prepare cyan pigment color paste; adding 12 parts of the prepared cyan pigment color paste into a mixed solution of 8 parts of ethylene glycol and 14 parts of deionized water, stirring and mixing uniformly, sequentially adding 3 parts of a cross-linking agent FH, 1.4 parts of citric acid, 4 parts of sodium alginate, 0.25 part of alkyl glycoside, 2 parts of sorbitol and 0.7 part of triethanolamine, stirring and mixing for 40min, filtering by adopting a 0.65-micron mixed fiber filter membrane, and finally desalting by adopting a polyamide nanofiltration membrane to prepare the cyan ink-jet ink.
Example 5
A preparation process of cyan ink-jet ink for polyester fabric ink-jet printing comprises the following steps:
(1) mixing 10 parts of cyan pigment, 0.31 part of span80 and deionized water, stirring and treating for 50min to prepare a cyan pigment suspension; dissolving 6 parts of aluminum isopropoxide in isopropanol, adding 0.01 part of sodium dodecyl sulfate, continuously stirring to obtain a solution A, dropwise adding the solution A into a cyan pigment suspension, stirring for 30min at normal temperature, then transferring into a hydrothermal kettle, reacting for 5h at 120 ℃, cooling to room temperature after the reaction is finished, filtering, and drying the solid to obtain a core-shell type cyan pigment;
(2) re-dispersing 10 parts of the prepared core-shell type cyan pigment in deionized water under the action of 0.012 part of silane coupling agent, stirring and mixing for 30min to prepare a suspension A, dissolving 0.6 part of dopamine hydrochloride in Tris-HCl buffer solution, stirring and mixing, then dropwise adding the mixture into the suspension A, stirring and mixing for 3h at room temperature, then filtering, and drying the solid to prepare the multilayer coated cyan pigment;
(3) stirring and mixing 10 parts of the multilayer coated cyan pigment prepared in the step (2) with deionized water, then adding 0.072 part of tween 80, and stirring and processing at the rotating speed of 1500rpm for 3 hours to prepare cyan pigment color paste; adding 15 parts of the prepared cyan pigment color paste into a mixed solution of 8 parts of ethylene glycol and 16 parts of deionized water, stirring and mixing uniformly, sequentially adding 4 parts of a cross-linking agent FH, 1.6 parts of citric acid, 5 parts of sodium alginate, 0.3 part of alkyl glycoside, 2 parts of sorbitol and 0.8 part of triethanolamine, stirring and mixing for 50min, filtering by adopting a 0.65-micron mixed fiber filter membrane, and finally desalting by adopting a polyamide nanofiltration membrane to prepare the cyan ink-jet ink.
Example 6
A preparation process of cyan ink-jet ink for polyester fabric ink-jet printing comprises the following steps:
(1) mixing 10 parts of cyan pigment, 0.33 part of span80 and deionized water, stirring and treating for 50min to prepare a cyan pigment suspension; dissolving 6 parts of aluminum isopropoxide in isopropanol, adding 0.01 part of sodium dodecyl sulfate, continuously stirring to obtain a solution A, dropwise adding the solution A into a cyan pigment suspension, stirring for 30min at normal temperature, then transferring into a hydrothermal kettle, reacting for 5h at 120 ℃, cooling to room temperature after the reaction is finished, filtering, and drying the solid to obtain a core-shell type cyan pigment;
(2) re-dispersing 10 parts of the prepared core-shell type cyan pigment in deionized water under the action of 0.012 part of silane coupling agent, stirring and mixing for 30min to prepare a suspension A, dissolving 0.6 part of dopamine hydrochloride in Tris-HCl buffer solution, stirring and mixing, then dropwise adding the mixture into the suspension A, stirring and mixing for 3.5h at room temperature, then filtering, and drying the solid to prepare the multilayer coated cyan pigment;
(3) stirring and mixing 10 parts of the multilayer coated cyan pigment prepared in the step (2) with deionized water, then adding 0.072 part of tween 80, and stirring and processing at the rotating speed of 1500rpm for 3 hours to prepare cyan pigment color paste; adding 15 parts of the prepared cyan pigment color paste into a mixed solution of 9 parts of ethylene glycol and 18 parts of deionized water, stirring and mixing uniformly, sequentially adding 4.5 parts of a cross-linking agent FH, 1.8 parts of citric acid, 5.5 parts of sodium alginate, 0.35 part of alkyl glycoside, 2.5 parts of sorbitol and 0.9 part of triethanolamine, stirring and mixing for 50min, filtering by adopting a 0.65 mu m mixed fiber filter membrane, and finally desalting by adopting a polyamide nanofiltration membrane to prepare the cyan ink-jet ink.
Comparative example
The cyan pigment is directly prepared into cyan pigment color paste without coating, and other preparation processes are the same as those of the example 6.
The application example is as follows:
cleaning a polyester fabric with clear water, adding the cleaned polyester fabric into a pretreating agent, carrying out padding treatment, and then drying the treated polyester fabric to obtain a pretreated polyester fabric; the pretreatment agent comprises 2 parts of nano hydroxyapatite, 1 part of dodecyl trimethyl ammonium chloride, 1.5 parts of polyvinylpyrrolidone, 10 parts of ethanol and 50 parts of deionized water in parts by weight;
the cyan ink-jet inks prepared in the above examples and comparative examples were placed in an ink-jet printer, and the polyester fabric was subjected to ink-jet printing at a temperature of 25 ± 5 ℃ and a relative humidity of 60-75%, with a resolution of 720dpi, and after the ink-jet printing was completed, the polyester fabric was subjected to baking treatment at 120 ℃ for 5min to obtain a printed polyester fabric.
And (3) performance testing:
1. determination of apparent color depth of printed fabrics
The K/S values of the fabrics were measured using an XRITE-8400 colorimeter under a CIELab color measurement system, D65 illuminant, 10 ° viewing angle, and 4 points were measured and averaged. A larger K/S value indicates a higher color depth of the ink-jet printing.
Wherein K is the absorption coefficient of the fabric to light, S is the scattering coefficient of the fabric to light, and R is the reflectivity of the fabric to light at the maximum absorption wavelength.
2. Soaping fastness test
The soaping fastness of the printed fabric is tested according to the national standard GB6156-85 method for testing the color fastness to washing of textiles, method 3.
3. Friction fastness test
Adopting desizing, bleaching and cotton fabric without any finishing agent, and cutting the cotton fabric into squares of 5cm multiplied by 5cm for a circular friction head. Fixing dry friction cloth on a friction head of a testing machine, enabling the direction of the friction cloth of 5cm multiplied by 20cm to be consistent with the running direction of the friction head, rubbing 10 times within 10s in the length direction of a dry friction sample, wherein the reciprocating stroke is 10cm, and the vertical pressure is 9N; and (3) soaking the wet rubbing cloth in three-level water, padding, wherein the mangle rolling rate is 95% -105%, and after the rubbing is finished, drying at room temperature.
The test results are shown in table 1:
TABLE 1
From the test results, when the cyan pigment ink prepared by the invention is used for ink-jet printing of polyester fabrics, the printing color is good in vividness and glossiness, and the color fastness is high. The ink-jet ink prepared by the invention can effectively form a layer of compact film on the surface of the polyester fabric, and active groups in the coating layer on the surface of the pigment can react with active groups on the surface of the fabric.
Although specific embodiments of the invention have been described, many other forms and modifications of the invention will be apparent to those skilled in the art. It is to be understood that the appended claims and this invention generally cover all such obvious forms and modifications which are within the true spirit and scope of the present invention.
Claims (10)
1. A preparation process of cyan ink-jet ink for ink-jet printing of polyester fabrics is characterized by comprising the following steps:
(1) mixing and stirring a cyan pigment, span80 and deionized water for 50min to prepare a cyan pigment suspension; dissolving aluminum isopropoxide in isopropanol, adding sodium dodecyl sulfate, continuously stirring to obtain a solution A, dropwise adding the solution A into a cyan pigment suspension, stirring at normal temperature for 30min, then transferring into a hydrothermal kettle, reacting at 120 ℃ for 2-6h, cooling to room temperature after the reaction is finished, filtering, and drying the solid to obtain a core-shell type cyan pigment;
(2) redispersing the prepared core-shell cyan pigment in deionized water under the action of a silane coupling agent, stirring and mixing for 30min to prepare a suspension A, dissolving dopamine hydrochloride in a Tris-HCl buffer solution, stirring and mixing, then dropwise adding the mixture into the suspension A, stirring and mixing for 1-4h at room temperature, then filtering, and drying the solid to prepare the multilayer coated cyan pigment;
stirring and mixing the multilayer coated cyan pigment prepared in the step (2) with deionized water, then adding Tween 80, and stirring and processing at the rotating speed of 1500rpm for 3 hours to prepare cyan pigment color paste; adding the prepared cyan pigment color paste into a mixed solution of ethylene glycol and deionized water, stirring and mixing uniformly, sequentially adding a cross-linking agent FH, citric acid, sodium alginate, alkyl glycoside, sorbitol and triethanolamine, stirring and mixing for 20-60min, filtering by using a 0.65-micron mixed fiber filter membrane, and finally desalting by using a polyamide nanofiltration membrane to obtain the cyan ink-jet ink.
2. The preparation process of cyan ink-jet ink for ink-jet printing of polyester fabrics according to claim 1, wherein in the step (1), the mass ratio of the cyan pigment, span80, aluminum isopropoxide and sodium dodecyl sulfate is 10: (0.25-0.35): 6: 0.01.
3. the preparation process of cyan ink-jet ink for ink-jet printing of polyester fabrics according to claim 1, wherein in the step (2), the mass ratio of the core-shell type cyan pigment to the silane coupling agent to the dopamine hydrochloride is 10: 0.012: 0.3-0.7.
4. The preparation process of cyan ink-jet ink for ink-jet printing of polyester fabrics according to claim 1,
characterized in that in the step (2), the concentration of the Tris-HCl buffer solution is 10mmol/L, and the pH value is 5.
5. The preparation process of cyan ink-jet ink for ink-jet printing of polyester fabrics according to claim 1, wherein in the step (3), the mass ratio of the multi-layer coated cyan pigment to tween 80 is 1: (0.0066-0.0073).
6. The preparation process of cyan ink-jet ink for ink-jet printing of polyester fabrics according to claim 1, wherein in the step (3), the amounts of cyan pigment paste, ethylene glycol, deionized water, crosslinking agent FH, citric acid, sodium alginate, alkyl glycoside, sorbitol and triethanolamine are, in parts by weight, respectively: 8-16 parts, 6-10 parts, 10-20 parts, 1-5 parts, 1-2 parts, 2-6 parts, 0.1-0.4 part, 1-3 parts and 0.5-1 part.
7. A cyan ink-jet ink for ink-jet printing of polyester fabrics, which is characterized by being prepared by the preparation process of the cyan ink-jet ink for ink-jet printing of the polyester fabrics as claimed in any one of claims 1 to 6.
8. The inkjet printing method of cyan inkjet ink for inkjet printing of polyester fabrics according to claim 7, characterized by comprising the following steps:
firstly, cleaning a polyester fabric with clear water, adding the cleaned polyester fabric into a pretreating agent, carrying out padding treatment, and then drying the treated polyester fabric to obtain a pretreated polyester fabric;
secondly, placing the cyan ink-jet ink in an ink-jet printer, carrying out ink-jet printing treatment on the polyester fabric under the conditions that the temperature is 25 +/-5 ℃ and the relative humidity is 60-75%, setting the resolution to be 720dpi, and after the ink-jet printing is finished, carrying out baking treatment on the polyester fabric for 5min at 120 ℃ to obtain the printed polyester fabric.
9. The inkjet printing method of cyan inkjet ink for inkjet printing of polyester fabric according to claim 8, wherein in the first step, the amount of the polyester fabric is 80g/m2The plain weave fabric has 32tex of warp and weft yarns, 282 warps/10 cm of warp density and 240 wefts/10 cm of weft density.
10. Ink-jet printing of cyan ink-jet ink for ink-jet printing of polyester fabrics according to claim 8
The flower pattern forming method is characterized in that in the first step, the pretreating agent comprises 1-3 parts by weight of nano hydroxyapatite with the average particle size of 30-50nm, 1-4 parts by weight of dodecyl trimethyl ammonium chloride, 1-2 parts by weight of polyvinylpyrrolidone, and,
5-11 parts of ethanol and 30-60 parts of deionized water.
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