CN108997832B - Environment-friendly leather silk screen water-based ink and preparation process thereof - Google Patents
Environment-friendly leather silk screen water-based ink and preparation process thereof Download PDFInfo
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- CN108997832B CN108997832B CN201811114866.XA CN201811114866A CN108997832B CN 108997832 B CN108997832 B CN 108997832B CN 201811114866 A CN201811114866 A CN 201811114866A CN 108997832 B CN108997832 B CN 108997832B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09D11/107—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
Abstract
The invention discloses an environment-friendly leather silk screen water-based ink and a preparation process thereof, wherein the environment-friendly leather silk screen water-based ink comprises the following raw materials in parts by weight: 40-60 parts of aqueous polyurethane emulsion, 35-55 parts of aqueous acrylic emulsion, 15-25 parts of water, 2-4 parts of wear-resistant slipping agent, 0.8-1.2 parts of sodium alginate, 0.5-1 part of defoaming agent, 0.5-1 part of flatting agent, 0.3-0.6 part of wetting agent, 0.3-0.6 part of dispersing agent and 5-10 parts of pigment. According to the environment-friendly leather silk screen water-based ink and the preparation process thereof, a large number of experimental studies show that the components and the proportion are optimized, and the obtained environment-friendly leather silk screen water-based ink is easy to use and store, free of solvent residue, free of pollution to leather, safe to human health, good in glossiness of printed articles, wear-resistant, excellent in adhesion fastness and tinting strength, good in hydrophobicity, water-fast and excellent in service performance.
Description
Technical Field
The invention relates to the technical field of ink, in particular to environment-friendly leather silk screen water-based ink and a preparation process thereof.
Background
With the development of society, under the dual pressure of energy crisis and worldwide anti-environmental pollution movement, the screen printing ink has no solvent. In the future screen printing ink market, the traditional solvent type ink is harmful to human bodies, the volatile solvent causes air pollution, the traditional solvent type ink does not accord with the national environmental protection policy of energy conservation and emission reduction and is gradually eliminated, and the water-based environmental protection ink for screen printing is replaced.
The nylon printing ink in the market is also called nylon printing ink, is a product mainly prepared from polyurethane resin liquid dissolved by cyclohexanone in the current market, has large taste in use, has more solvent residues, is harmful to people and environment, and is limited in many fields due to the stricter environmental protection regulations.
Compared with the traditional solvent type nylon ink, the water-based nylon ink has the defects of slow drying, poor water washing resistance, poor adhesive force compared with the traditional solvent type nylon ink and the like, and can not meet the market requirements, so the traditional solvent type nylon ink still occupies a larger proportion in the current screen printing ink market. Chinese patent document CN105419464A discloses a leather screen water-based ink, which comprises the following components in parts by weight: 30-47 parts of water-based polyurethane emulsion, 28-46 parts of water-based acrylic emulsion, 14-16 parts of water, 0.4-0.6 part of wetting dispersant, 0.4-0.6 part of defoaming agent, 0.4-0.6 part of flatting agent, 1-2 parts of slipping and wear-resisting agent and 4-6 parts of organic pigment.
With the development of the market, the requirement on the ink is higher and higher, and the invention aims to develop the environment-friendly leather silk screen water-based ink and the preparation process thereof.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the technical problem of providing the environment-friendly leather silk screen water-based ink and the preparation process thereof, and the obtained environment-friendly leather silk screen water-based ink is easy to use and store, has no solvent residue, has no pollution to leather, is safe to human health, and has good glossiness, wear resistance, good adhesive force, water washing resistance and excellent service performance of printed articles.
The purpose of the invention is realized by the following technical scheme:
an environment-friendly leather silk screen water-based ink comprises the following raw materials in parts by weight: 40-60 parts of aqueous polyurethane emulsion, 35-55 parts of aqueous acrylic emulsion, 15-25 parts of water, 2-4 parts of wear-resistant slipping agent, 0.8-1.2 parts of sodium alginate, 0.5-1 part of defoaming agent, 0.5-1 part of flatting agent, 0.3-0.6 part of wetting agent, 0.3-0.6 part of dispersing agent and 5-10 parts of pigment.
An environment-friendly leather silk screen water-based ink comprises the following raw materials in parts by weight: 40-60 parts of aqueous polyurethane emulsion, 35-55 parts of aqueous acrylic emulsion, 15-25 parts of water, 2-4 parts of wear-resistant slipping agent, 0.8-1.2 parts of modified sodium alginate, 0.5-1 part of defoaming agent, 0.5-1 part of flatting agent, 0.3-0.6 part of wetting agent, 0.3-0.6 part of dispersing agent and 5-10 parts of pigment.
The wear-resistant slipping agent is one or a mixture of more of fumed silica, polydimethylsiloxane and polytetrafluoroethylene.
The dispersant is a sodium polycarboxylate dispersant.
The defoaming agent is an organic silicon defoaming agent or pentaerythritol stearate.
The pigment is one or more of titanium dioxide, carbon black, permanent yellow, fast yellow, permanent red, fast scarlet, phthalocyanine blue and phthalocyanine green.
The wetting agent is dioctyl sodium sulfosuccinate and/or sodium lignosulfonate.
Preferably, the wetting agent is a mixture of dioctyl sodium sulfosuccinate and sodium lignosulfonate, and the mass ratio of the dioctyl sodium sulfosuccinate to the sodium lignosulfonate is (1-5): (1-5).
The leveling agent is a siloxane modified acrylate leveling agent and/or a fluorine-containing acrylate leveling agent.
Preferably, the leveling agent is a mixture of a siloxane modified acrylate leveling agent and a fluorine-containing acrylate leveling agent, wherein the mass ratio of the siloxane modified acrylate leveling agent to the fluorine-containing acrylate leveling agent is (1-5): 1.
the modified sodium alginate is prepared by the following method: adding 2-6g of sodium alginate into 200mL of 100-one-waste water, stirring at 85-95 ℃ at 300 rpm of 100-one-waste water for completely dissolving the sodium alginate, adjusting the pH to 8.5-9.5 by using 0.5mol/L of sodium hydroxide, dropwise adding 2-4g of trimethylolpropane triglycidyl ether, stirring at 90-95 ℃ at 300 rpm of 100-one-waste water for 1-3 hours, stirring at 55-65 ℃ at 300 rpm of 100-one-waste water for 3-5 hours to obtain a reaction solution, adding 3-5g of titanium dioxide into 95-100g of water, performing ultrasonic dispersion for 20-40 minutes to obtain a titanium dioxide solution, adding 4-6g of the titanium dioxide solution into the reaction solution, adjusting the pH to 8.5-9.5 by using 0.5mol/L of sodium hydroxide, stirring at 35-45 ℃ at 300 rpm of 100-waste water for 2-4 hours, cooling to room temperature, adjusting the pH value to 3.5-4.5 by using an acetic acid aqueous solution with the volume fraction of 50% to obtain a precipitate, washing the precipitate for 1-3 times by using 100-200mL acetone, and drying at 40-60 ℃ to obtain the modified sodium alginate.
The preparation process of the environment-friendly leather silk screen water-based ink comprises the following steps of: (1) weighing a dispersing agent, a defoaming agent, a wetting agent and a pigment, adding the dispersing agent, the defoaming agent, the wetting agent and the pigment into 10-18 parts of water, stirring for 10-20 minutes at 800-; (2) mixing the color paste, the aqueous polyurethane emulsion, the aqueous acrylic emulsion and the rest water, stirring for 20-40 minutes at 800-.
According to the environment-friendly leather silk screen water-based ink and the preparation process thereof, a large number of experimental studies show that the components and the proportion are optimized, and the obtained environment-friendly leather silk screen water-based ink is easy to use and store, free of solvent residue, free of pollution to leather, safe to human health, good in glossiness of printed articles, wear-resistant, excellent in adhesion fastness and tinting strength, good in hydrophobicity, water-fast and excellent in service performance.
Detailed Description
In the present invention, all the equipment and materials are commercially available or commonly used in the art, and the methods in the following examples are conventional in the art unless otherwise specified.
The siloxane modified acrylate leveling agent is prepared by adopting the method of example 1 in Chinese patent application No. 201510515339. X.
The polyether modified polyacrylate leveling agent is prepared by the method of example 1 in Chinese patent with application number of 201110059479.2.
The aqueous polyurethane emulsion is purchased from Gaofen aqueous coating Co., Ltd, model number: aliphatic F6981.
As the aqueous acrylic emulsion, an aqueous acrylic emulsion of Joncryl 89 was used.
Sodium alginate, purchased from Shanghai Allantin Biotechnology, Inc., product number: s100126.
Fumed silica, which is American cabot type M-5 fumed silica.
The sodium polycarboxylate Dispersant is SN-Dispersant SN-5040 Dispersant from Taiwan.
The organic silicon defoaming agent adopts organic modified polysiloxane emulsion with the winning type TEGO AIREX 902W.
The permanent red is prepared from Kelaien red with the model number of F3 RK-70.
Dioctyl sodium sulfosuccinate, CAS No.: 577-11-7, available from Shanghai Michelin Biochemical technology, Inc., product number: A800506.
sodium lignosulfonate, CAS No.: 8061-51-6, available from mairei chemical technologies, inc, product number: m27214.
Trimethylolpropane triglycidyl ether, CAS No.: 30499-70-8, purchased from Shanghai Michelin Biotechnology, Inc., under product number: product numbering: t856506.
Titanium dioxide, anatase titanium dioxide purchased from Jiangsu Tianxing New Material Co., Ltd, particle size 10nm, good number: A10.
sand mill, the product of the Ming sector of the chemical machinery of Lung-Gaokang in the area of Shundde in Fushan City, model: the SDF 400.
Example 1
The environment-friendly leather silk screen water-based ink comprises the following raw materials in parts by weight: 50 parts of aqueous polyurethane emulsion, 45 parts of aqueous acrylic emulsion, 20 parts of deionized water, 3 parts of wear-resistant slipping agent, 1 part of sodium alginate, 0.8 part of defoaming agent, 0.8 part of flatting agent, 0.5 part of wetting agent, 0.5 part of dispersing agent and 8 parts of pigment.
The wear-resistant slip agent is fumed silica.
The dispersant is a sodium polycarboxylate dispersant.
The defoaming agent is an organic silicon defoaming agent.
The pigment is permanent red.
The wetting agent is dioctyl sodium sulfosuccinate.
The leveling agent is a fluorine-containing acrylate leveling agent.
The preparation process of the environment-friendly leather silk screen water-based ink comprises the following steps of: (1) weighing a dispersing agent, a defoaming agent, a wetting agent and a pigment, adding the dispersing agent, the defoaming agent, the wetting agent and the pigment into deionized water with the dosage of one half of that of the deionized water, stirring for 15 minutes at 1000 revolutions per minute, and grinding and dispersing the mixture by a sand mill until the fineness is below 10 mu m to obtain color paste; (2) mixing the color paste, the aqueous polyurethane emulsion, the aqueous acrylic emulsion and the rest deionized water, stirring for 30 minutes at 1000 rpm, adding the sodium alginate, the leveling agent and the wear-resistant slipping agent, and stirring for 30 minutes at 1500 rpm to obtain the aqueous polyurethane/acrylic emulsion.
Example 2
The environment-friendly leather silk screen water-based ink comprises the following raw materials in parts by weight: 50 parts of aqueous polyurethane emulsion, 45 parts of aqueous acrylic emulsion, 20 parts of deionized water, 3 parts of wear-resistant slipping agent, 1 part of modified sodium alginate, 0.8 part of defoaming agent, 0.8 part of flatting agent, 0.5 part of wetting agent, 0.5 part of dispersing agent and 8 parts of pigment.
The wear-resistant slip agent is fumed silica.
The dispersant is a sodium polycarboxylate dispersant.
The defoaming agent is an organic silicon defoaming agent.
The pigment is permanent red.
The wetting agent is dioctyl sodium sulfosuccinate.
The leveling agent is a fluorine-containing acrylate leveling agent.
The modified sodium alginate is prepared by the following method: adding 4g of sodium alginate into 150mL of deionized water, stirring at 200 r/min at 90 ℃ until the sodium alginate is completely dissolved, adjusting the pH to 9.0 by using 0.5mol/L of sodium hydroxide, dropwise adding 3g of trimethylolpropane triglycidyl ether, stirring at 200 r/min at 92 ℃ for 2 hours, stirring at 200 r/min at 60 ℃ for 4 hours to obtain a reaction solution, adding 4g of titanium dioxide into 96g of water, ultrasonically dispersing at 25 ℃ for 30 minutes, ultrasonically adjusting the ultrasonic frequency to 30kHz and the ultrasonic power to 300W to obtain a titanium dioxide solution, adding 5g of the titanium dioxide solution into the reaction solution, adjusting the pH to 9.0 by using 0.5mol/L of sodium hydroxide, stirring at 200 r/min at 40 ℃ for 3 hours, cooling to room temperature, adjusting the pH to 4.0 by using an acetic acid aqueous solution with the volume fraction of 50% to obtain a precipitate, washing the precipitate with 150mL of acetone for 2 times, and drying at 50 ℃ to obtain the modified sodium alginate.
The preparation process of the environment-friendly leather silk screen water-based ink comprises the following steps of: (1) weighing a dispersing agent, a defoaming agent, a wetting agent and a pigment, adding the dispersing agent, the defoaming agent, the wetting agent and the pigment into deionized water with the dosage of one half of that of the deionized water, stirring for 15 minutes at 1000 revolutions per minute, and grinding and dispersing the mixture by a sand mill until the fineness is below 10 mu m to obtain color paste; (2) mixing the color paste, the aqueous polyurethane emulsion, the aqueous acrylic emulsion and the rest deionized water, stirring for 30 minutes at 1000 rpm, adding the modified sodium alginate, the leveling agent and the wear-resistant slipping agent, and stirring for 30 minutes at 1500 rpm to obtain the aqueous polyurethane/acrylic emulsion.
Example 3
The environment-friendly leather silk screen water-based ink comprises the following raw materials in parts by weight: 50 parts of aqueous polyurethane emulsion, 45 parts of aqueous acrylic emulsion, 20 parts of deionized water, 3 parts of wear-resistant slipping agent, 1 part of modified sodium alginate, 0.8 part of defoaming agent, 0.8 part of flatting agent, 0.5 part of wetting agent, 0.5 part of dispersing agent and 8 parts of pigment.
The wear-resistant slip agent is fumed silica.
The dispersant is a sodium polycarboxylate dispersant.
The defoaming agent is an organic silicon defoaming agent.
The pigment is permanent red.
The wetting agent is sodium lignosulfonate.
The leveling agent is a fluorine-containing acrylate leveling agent.
The modified sodium alginate is prepared by the following method: adding 4g of sodium alginate into 150mL of deionized water, stirring at 200 r/min at 90 ℃ until the sodium alginate is completely dissolved, adjusting the pH to 9.0 by using 0.5mol/L of sodium hydroxide, dropwise adding 3g of trimethylolpropane triglycidyl ether, stirring at 200 r/min at 92 ℃ for 2 hours, stirring at 200 r/min at 60 ℃ for 4 hours to obtain a reaction solution, adding 4g of titanium dioxide into 96g of water, ultrasonically dispersing at 25 ℃ for 30 minutes, ultrasonically adjusting the ultrasonic frequency to 30kHz and the ultrasonic power to 300W to obtain a titanium dioxide solution, adding 5g of the titanium dioxide solution into the reaction solution, adjusting the pH to 9.0 by using 0.5mol/L of sodium hydroxide, stirring at 200 r/min at 40 ℃ for 3 hours, cooling to room temperature, adjusting the pH to 4.0 by using an acetic acid aqueous solution with the volume fraction of 50% to obtain a precipitate, washing the precipitate with 150mL of acetone for 2 times, and drying at 50 ℃ to obtain the modified sodium alginate.
The preparation process of the environment-friendly leather silk screen water-based ink comprises the following steps of: (1) weighing a dispersing agent, a defoaming agent, a wetting agent and a pigment, adding the dispersing agent, the defoaming agent, the wetting agent and the pigment into deionized water with the dosage of one half of that of the deionized water, stirring for 15 minutes at 1000 revolutions per minute, and grinding and dispersing the mixture by a sand mill until the fineness is below 10 mu m to obtain color paste; (2) mixing the color paste, the aqueous polyurethane emulsion, the aqueous acrylic emulsion and the rest deionized water, stirring for 30 minutes at 1000 rpm, adding the modified sodium alginate, the leveling agent and the wear-resistant slipping agent, and stirring for 30 minutes at 1500 rpm to obtain the aqueous polyurethane/acrylic emulsion.
Example 4
The environment-friendly leather silk screen water-based ink comprises the following raw materials in parts by weight: 50 parts of aqueous polyurethane emulsion, 45 parts of aqueous acrylic emulsion, 20 parts of deionized water, 3 parts of wear-resistant slipping agent, 1 part of modified sodium alginate, 0.8 part of defoaming agent, 0.8 part of flatting agent, 0.5 part of wetting agent, 0.5 part of dispersing agent and 8 parts of pigment.
The wear-resistant slip agent is fumed silica.
The dispersant is a sodium polycarboxylate dispersant.
The defoaming agent is an organic silicon defoaming agent.
The pigment is permanent red.
The wetting agent is a mixture of dioctyl sodium sulfosuccinate and sodium lignosulfonate, wherein the mass ratio of the dioctyl sodium sulfosuccinate to the sodium lignosulfonate is 2: 3.
the leveling agent is a fluorine-containing acrylate leveling agent.
The modified sodium alginate is prepared by the following method: adding 4g of sodium alginate into 150mL of deionized water, stirring at 200 r/min at 90 ℃ until the sodium alginate is completely dissolved, adjusting the pH to 9.0 by using 0.5mol/L of sodium hydroxide, dropwise adding 3g of trimethylolpropane triglycidyl ether, stirring at 200 r/min at 92 ℃ for 2 hours, stirring at 200 r/min at 60 ℃ for 4 hours to obtain a reaction solution, adding 4g of titanium dioxide into 96g of water, ultrasonically dispersing at 25 ℃ for 30 minutes, ultrasonically adjusting the ultrasonic frequency to 30kHz and the ultrasonic power to 300W to obtain a titanium dioxide solution, adding 5g of the titanium dioxide solution into the reaction solution, adjusting the pH to 9.0 by using 0.5mol/L of sodium hydroxide, stirring at 200 r/min at 40 ℃ for 3 hours, cooling to room temperature, adjusting the pH to 4.0 by using an acetic acid aqueous solution with the volume fraction of 50% to obtain a precipitate, washing the precipitate with 150mL of acetone for 2 times, and drying at 50 ℃ to obtain the modified sodium alginate.
The preparation process of the environment-friendly leather silk screen water-based ink comprises the following steps of: (1) weighing a dispersing agent, a defoaming agent, a wetting agent and a pigment, adding the dispersing agent, the defoaming agent, the wetting agent and the pigment into deionized water with the dosage of one half of that of the deionized water, stirring for 15 minutes at 1000 revolutions per minute, and grinding and dispersing the mixture by a sand mill until the fineness is below 10 mu m to obtain color paste; (2) mixing the color paste, the aqueous polyurethane emulsion, the aqueous acrylic emulsion and the rest deionized water, stirring for 30 minutes at 1000 rpm, adding the modified sodium alginate, the leveling agent and the wear-resistant slipping agent, and stirring for 30 minutes at 1500 rpm to obtain the aqueous polyurethane/acrylic emulsion.
Example 5
The environment-friendly leather silk screen water-based ink comprises the following raw materials in parts by weight: 50 parts of aqueous polyurethane emulsion, 45 parts of aqueous acrylic emulsion, 20 parts of deionized water, 3 parts of wear-resistant slipping agent, 1 part of modified sodium alginate, 0.8 part of defoaming agent, 0.8 part of flatting agent, 0.5 part of wetting agent, 0.5 part of dispersing agent and 8 parts of pigment.
The wear-resistant slip agent is fumed silica.
The dispersant is a sodium polycarboxylate dispersant.
The defoaming agent is an organic silicon defoaming agent.
The pigment is permanent red.
The wetting agent is a mixture of dioctyl sodium sulfosuccinate and sodium lignosulfonate, wherein the mass ratio of the dioctyl sodium sulfosuccinate to the sodium lignosulfonate is 2: 3.
the leveling agent is a siloxane modified acrylate leveling agent.
The modified sodium alginate is prepared by the following method: adding 4g of sodium alginate into 150mL of deionized water, stirring at 200 r/min at 90 ℃ until the sodium alginate is completely dissolved, adjusting the pH to 9.0 by using 0.5mol/L of sodium hydroxide, dropwise adding 3g of trimethylolpropane triglycidyl ether, stirring at 200 r/min at 92 ℃ for 2 hours, stirring at 200 r/min at 60 ℃ for 4 hours to obtain a reaction solution, adding 4g of titanium dioxide into 96g of water, ultrasonically dispersing at 25 ℃ for 30 minutes, ultrasonically adjusting the ultrasonic frequency to 30kHz and the ultrasonic power to 300W to obtain a titanium dioxide solution, adding 5g of the titanium dioxide solution into the reaction solution, adjusting the pH to 9.0 by using 0.5mol/L of sodium hydroxide, stirring at 200 r/min at 40 ℃ for 3 hours, cooling to room temperature, adjusting the pH to 4.0 by using an acetic acid aqueous solution with the volume fraction of 50% to obtain a precipitate, washing the precipitate with 150mL of acetone for 2 times, and drying at 50 ℃ to obtain the modified sodium alginate.
The preparation process of the environment-friendly leather silk screen water-based ink comprises the following steps of: (1) weighing a dispersing agent, a defoaming agent, a wetting agent and a pigment, adding the dispersing agent, the defoaming agent, the wetting agent and the pigment into deionized water with the dosage of one half of that of the deionized water, stirring for 15 minutes at 1000 revolutions per minute, and grinding and dispersing the mixture by a sand mill until the fineness is below 10 mu m to obtain color paste; (2) mixing the color paste, the aqueous polyurethane emulsion, the aqueous acrylic emulsion and the rest deionized water, stirring for 30 minutes at 1000 rpm, adding the modified sodium alginate, the leveling agent and the wear-resistant slipping agent, and stirring for 30 minutes at 1500 rpm to obtain the aqueous polyurethane/acrylic emulsion.
Example 6
The environment-friendly leather silk screen water-based ink comprises the following raw materials in parts by weight: 50 parts of aqueous polyurethane emulsion, 45 parts of aqueous acrylic emulsion, 20 parts of deionized water, 3 parts of wear-resistant slipping agent, 1 part of modified sodium alginate, 0.8 part of defoaming agent, 0.8 part of flatting agent, 0.5 part of wetting agent, 0.5 part of dispersing agent and 8 parts of pigment.
The wear-resistant slip agent is fumed silica.
The dispersant is a sodium polycarboxylate dispersant.
The defoaming agent is an organic silicon defoaming agent.
The pigment is permanent red.
The wetting agent is a mixture of dioctyl sodium sulfosuccinate and sodium lignosulfonate, wherein the mass ratio of the dioctyl sodium sulfosuccinate to the sodium lignosulfonate is 2: 3.
the leveling agent is a mixture of a siloxane modified acrylate leveling agent and a fluorine-containing acrylate leveling agent, wherein the mass ratio of the siloxane modified acrylate leveling agent to the fluorine-containing acrylate leveling agent is 3: 1.
the modified sodium alginate is prepared by the following method: adding 4g of sodium alginate into 150mL of deionized water, stirring at 200 r/min at 90 ℃ until the sodium alginate is completely dissolved, adjusting the pH to 9.0 by using 0.5mol/L of sodium hydroxide, dropwise adding 3g of trimethylolpropane triglycidyl ether, stirring at 200 r/min at 92 ℃ for 2 hours, stirring at 200 r/min at 60 ℃ for 4 hours to obtain a reaction solution, adding 4g of titanium dioxide into 96g of water, ultrasonically dispersing at 25 ℃ for 30 minutes, ultrasonically adjusting the ultrasonic frequency to 30kHz and the ultrasonic power to 300W to obtain a titanium dioxide solution, adding 5g of the titanium dioxide solution into the reaction solution, adjusting the pH to 9.0 by using 0.5mol/L of sodium hydroxide, stirring at 200 r/min at 40 ℃ for 3 hours, cooling to room temperature, adjusting the pH to 4.0 by using an acetic acid aqueous solution with the volume fraction of 50% to obtain a precipitate, washing the precipitate with 150mL of acetone for 2 times, and drying at 50 ℃ to obtain the modified sodium alginate.
The preparation process of the environment-friendly leather silk screen water-based ink comprises the following steps of: (1) weighing a dispersing agent, a defoaming agent, a wetting agent and a pigment, adding the dispersing agent, the defoaming agent, the wetting agent and the pigment into deionized water with the dosage of one half of that of the deionized water, stirring for 15 minutes at 1000 revolutions per minute, and grinding and dispersing the mixture by a sand mill until the fineness is below 10 mu m to obtain color paste; (2) mixing the color paste, the aqueous polyurethane emulsion, the aqueous acrylic emulsion and the rest deionized water, stirring for 30 minutes at 1000 rpm, adding the modified sodium alginate, the leveling agent and the wear-resistant slipping agent, and stirring for 30 minutes at 1500 rpm to obtain the aqueous polyurethane/acrylic emulsion.
Test example 1
The glossiness of the environment-friendly leather silk screen water-based ink prepared in the embodiment is tested, and the specific test result is shown in table 1.
And (3) testing the glossiness: preparing a printing sample according to a sample scraping method of GB/T13217.1-2009 (liquid ink color inspection method) at the temperature of 23 +/-2 ℃ and the relative humidity of the environment of 65 +/-5%, placing for 2 hours, placing a side head of a 60-degree angle gloss meter with accurate adjustment on the sample scraping method with the bottom lined with coated paper, leveling the printing sample by using a photometric table, reading data, measuring data of an upper point, a middle point and a lower point of each printing sample, and calculating an arithmetic mean value, namely the gloss.
Table 1 table of glossiness test results of water-based ink for environmental-friendly leather screen
| Degree of gloss | |
| Example 1 | 60.4 |
| Example 2 | 67.2 |
| Example 3 | 66.7 |
| Example 4 | 73.5 |
| Example 5 | 73.9 |
| Example 6 | 82.7 |
Test example 2
The environmental-friendly leather silk screen water-based ink prepared in the examples is tested for adhesion fastness and tinting strength, the adhesion fastness is tested according to GB/T13217.7-2009 'test method for adhesion fastness of liquid ink', and the tinting strength is tested according to GB/T13217.6-2009 'test method for tinting strength of liquid ink', and specific test results are shown in Table 2.
Table 2 table of test results of adhesion of water-based ink for environmental-friendly leather silk screen
| Fastness of attachment,% | Coloring power% | |
| Example 1 | 76 | 87 |
| Example 2 | 84 | 92 |
| Example 3 | 83 | 91 |
| Example 4 | 91 | 95 |
| Example 5 | 92 | 96 |
| Example 6 | 99 | 100 |
Test example 3
The hydrophobicity of the coating of the water-based ink for the environment-friendly leather silk screen prepared in the example is tested. The test method is as follows: the water-based ink for the environment-friendly leather silk screen is coated on a glass plate with the thickness of 10cm multiplied by 10cm, the thickness of the coating is 12 mu m, an OCA20 dynamic contact angle measuring instrument of Dapaphysics company of Germany is adopted, ultrapure water is adopted as a water source, the size of a water drop is 2 mu L, the dropping mode is a hanging drop method, 5 points at different positions are measured on each group of samples, and the arithmetic mean value is obtained to obtain the contact angle. The specific results are shown in Table 3.
Table 3 table of contact angle test results of water-based ink for environmental-friendly leather screen
| Contact angle | |
| Example 1 | 64 |
| Example 2 | 69 |
| Example 3 | 68 |
| Example 4 | 75 |
| Example 5 | 76 |
| Example 6 | 84 |
Claims (7)
1. The environment-friendly leather silk screen water-based ink is characterized by comprising the following raw materials in parts by weight: 40-60 parts of aqueous polyurethane emulsion, 35-55 parts of aqueous acrylic emulsion, 15-25 parts of water, 2-4 parts of wear-resistant slipping agent, 0.8-1.2 parts of modified sodium alginate, 0.5-1 part of defoaming agent, 0.5-1 part of flatting agent, 0.3-0.6 part of wetting agent, 0.3-0.6 part of dispersing agent and 5-10 parts of pigment;
the modified sodium alginate is prepared by the following method: adding 2-6g of sodium alginate into 200mL of 100-one-waste water, stirring at 85-95 ℃ at 300 rpm of 100-one-waste water for completely dissolving the sodium alginate, adjusting the pH to 8.5-9.5 by using 0.5mol/L of sodium hydroxide, dropwise adding 2-4g of trimethylolpropane triglycidyl ether, stirring at 90-95 ℃ at 300 rpm of 100-one-waste water for 1-3 hours, stirring at 55-65 ℃ at 300 rpm of 100-one-waste water for 3-5 hours to obtain a reaction solution, adding 3-5g of titanium dioxide into 95-100g of water, performing ultrasonic dispersion for 20-40 minutes to obtain a titanium dioxide solution, adding 4-6g of the titanium dioxide solution into the reaction solution, adjusting the pH to 8.5-9.5 by using 0.5mol/L of sodium hydroxide, stirring at 35-45 ℃ at 300 rpm of 100-waste water for 2-4 hours, cooling to room temperature, adjusting the pH value to 3.5-4.5 by using an acetic acid aqueous solution with the volume fraction of 50% to obtain a precipitate, washing the precipitate for 1-3 times by using 100-200mL acetone, and drying at 40-60 ℃ to obtain modified sodium alginate;
the wetting agent is a mixture of dioctyl sodium sulfosuccinate and sodium lignosulfonate, and the mass ratio of the dioctyl sodium sulfosuccinate to the sodium lignosulfonate is (1-5): (1-5);
the leveling agent is a mixture of a siloxane modified acrylate leveling agent and a fluorine-containing acrylate leveling agent, wherein the mass ratio of the siloxane modified acrylate leveling agent to the fluorine-containing acrylate leveling agent is (1-5): 1.
2. the environment-friendly leather silk screen water-based ink as claimed in claim 1, wherein the wear-resistant slip agent is one or a mixture of more of fumed silica, polydimethylsiloxane and polytetrafluoroethylene.
3. The environment-friendly leather silk screen water-based ink as claimed in claim 1, wherein the dispersant is a sodium polycarboxylate type dispersant.
4. The environment-friendly leather silk screen water-based ink as defined in claim 1, wherein the defoaming agent is an organic silicon defoaming agent or pentaerythritol stearate.
5. The environment-friendly leather silk screen water-based ink as defined in claim 1, wherein the pigment is one or a mixture of titanium dioxide, carbon black, permanent yellow, fast yellow, permanent red, fast scarlet, phthalocyanine blue and phthalocyanine green.
6. The preparation process of the water-based ink for the environment-friendly leather silk screen according to any one of claims 1 to 5, which comprises the following steps of: (1) weighing the components, adding the dispersing agent, the defoaming agent, the wetting agent and the pigment into 10-18 parts of water, stirring for 10-20 minutes at 800-; (2) mixing the color paste, the aqueous polyurethane emulsion, the aqueous acrylic emulsion and the rest water, stirring for 20-40 minutes at 800-.
7. The environment-friendly leather silk screen water-based ink as claimed in claim 1, wherein the environment-friendly leather silk screen water-based ink comprises the following raw materials in parts by weight: 50 parts of aqueous polyurethane emulsion, 45 parts of aqueous acrylic emulsion, 20 parts of deionized water, 3 parts of wear-resistant slipping agent, 1 part of modified sodium alginate, 0.8 part of defoaming agent, 0.8 part of flatting agent, 0.5 part of wetting agent, 0.5 part of dispersing agent and 8 parts of pigment;
the wear-resistant slipping agent is fumed silica;
the dispersant is a sodium polycarboxylate dispersant;
the defoaming agent is an organic silicon defoaming agent;
the pigment is permanent red;
the wetting agent is a mixture of dioctyl sodium sulfosuccinate and sodium lignosulfonate, wherein the mass ratio of the dioctyl sodium sulfosuccinate to the sodium lignosulfonate is 2: 3;
the leveling agent is a mixture of a siloxane modified acrylate leveling agent and a fluorine-containing acrylate leveling agent, wherein the mass ratio of the siloxane modified acrylate leveling agent to the fluorine-containing acrylate leveling agent is 3: 1;
the modified sodium alginate is prepared by the following method: adding 4g of sodium alginate into 150mL of deionized water, stirring at 200 r/min at 90 ℃ until the sodium alginate is completely dissolved, adjusting the pH to 9.0 by using 0.5mol/L of sodium hydroxide, dropwise adding 3g of trimethylolpropane triglycidyl ether, stirring at 200 r/min at 92 ℃ for 2 hours, stirring at 200 r/min at 60 ℃ for 4 hours to obtain a reaction solution, adding 4g of titanium dioxide into 96g of water, ultrasonically dispersing at 25 ℃ for 30 minutes, ultrasonically adjusting the ultrasonic frequency to 30kHz and the ultrasonic power to 300W to obtain a titanium dioxide solution, adding 5g of the titanium dioxide solution into the reaction solution, adjusting the pH to 9.0 by using 0.5mol/L of sodium hydroxide, stirring at 200 r/min at 40 ℃ for 3 hours, cooling to room temperature, adjusting the pH to 4.0 by using an acetic acid aqueous solution with the volume fraction of 50% to obtain a precipitate, washing the precipitate with 150mL of acetone for 2 times, drying at 50 ℃ to obtain modified sodium alginate;
the preparation process of the environment-friendly leather silk screen water-based ink comprises the following steps of: (1) weighing the components, adding a dispersing agent, a defoaming agent, a wetting agent and a pigment into deionized water with the dosage of one half of that of the deionized water, stirring for 15 minutes at 1000 revolutions per minute, and grinding and dispersing by a sand mill until the fineness is below 10 mu m to obtain color paste; (2) mixing the color paste, the aqueous polyurethane emulsion, the aqueous acrylic emulsion and the rest deionized water, stirring for 30 minutes at 1000 rpm, adding the modified sodium alginate, the leveling agent and the wear-resistant slipping agent, and stirring for 30 minutes at 1500 rpm to obtain the aqueous polyurethane/acrylic emulsion.
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| CN111621196A (en) * | 2020-06-28 | 2020-09-04 | 浙江大胜达包装股份有限公司 | Sun-proof waterproof printing ink and preparation method thereof |
| CN113249988A (en) * | 2021-05-25 | 2021-08-13 | 段永进 | Leather printed product and preparation method thereof |
| CN113652114A (en) * | 2021-09-26 | 2021-11-16 | 广东锦龙源印刷材料有限公司 | Double-doped wear-resistant water-based ink and preparation method thereof |
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