CN111253801A - Environment-friendly water-based ink for shopping bag printing and preparation method thereof - Google Patents
Environment-friendly water-based ink for shopping bag printing and preparation method thereof Download PDFInfo
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- CN111253801A CN111253801A CN202010218143.5A CN202010218143A CN111253801A CN 111253801 A CN111253801 A CN 111253801A CN 202010218143 A CN202010218143 A CN 202010218143A CN 111253801 A CN111253801 A CN 111253801A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09D11/107—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
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- 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
- C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
Abstract
The invention discloses environment-friendly water-based ink for shopping bag printing and a preparation method thereof, wherein the environment-friendly water-based ink for shopping bag printing comprises the following raw materials in parts by weight: water-soluble acrylic resin, pigment, water-based ink binder, dispersant, flatting agent, defoaming agent, antistatic agent, pH regulator, wear-resisting agent and deionized water; the water-based ink vehicle comprises the following raw materials in parts by weight: the composite material comprises water-based polyurethane resin, porous graphene, a hydrochloric acid solution, a silane coupling agent and an ethanol water solution. The environment-friendly water-based ink for printing the shopping bags is prepared by selecting the raw materials, optimizing the content of each raw material and selecting a proper proportion, so that the advantages of the water-based ink are fully exerted, the water-based ink and the water-based ink are mutually supplemented and promoted, and the prepared environment-friendly water-based ink for printing the shopping bags is high in drying speed, good in adhesion fastness on the shopping bags, non-toxic and environment-friendly.
Description
Technical Field
The invention relates to the technical field of ink, in particular to environment-friendly water-based ink for shopping bag printing and a preparation method thereof.
Background
The Water-based ink (Water-based ink) is called Water ink for short, and the Water-based ink for flexographic plates is called liquid ink, and is mainly prepared by compounding, grinding and processing Water-soluble resin, organic pigment, solvent and related auxiliary agents. The water-based ink is particularly suitable for packaging and printing products with strict requirements on sanitary conditions, such as cigarettes, wine, foods, beverages, medicines, toys for children and the like.
With the successive introduction of a series of non-aromatic hydrocarbon solvent inks (such as alcohol and ester-soluble inks), water-based inks, UV inks, and soybean oil-based inks, environmental protection of the inks has been increasingly advanced. Compared with solvent-based ink, the water-based ink has more advanced environmental protection performance, does not contain aromatic hydrocarbon solvent, greatly reduces VOC, but still cannot achieve zero content, and still contains a small amount of alcohol, ether and even organic amine. It has little influence on the environment and mainly pollutes the air of a workshop.
The invention discloses a pure water type gravure cyan ink for printing a PVC decorative film and a preparation method thereof, wherein the patent publication number is CN 106479267A in 2017.03.08, and the invention provides the pure water type gravure cyan ink for printing the PVC decorative film, which is mainly prepared from the following raw materials, by mass, 5-20 parts of cyan pigment, 50-75 parts of water-based PVC glue, 20-30 parts of water-based polyurethane resin, 10-30 parts of water-based epoxy resin, 15-35 parts of deionized water, 1-2 parts of an antifoaming agent, 1-2 parts of a dispersing agent and 1-1.5 parts of a surfactant. The preparation method comprises mixing all the raw materials, stirring, grinding, dispersing, inspecting quality, filtering, and packaging. The formula of the invention does not contain any organic solvent, is safe and environment-friendly, enhances the wetting effect of the blue pigment, and simultaneously has good wear resistance and film forming property. However, the ink of this patent has low adhesion and water resistance.
In summary, the water-based inks used at present have the following problems:
1. poor adhesion;
2. the drying speed is slow and the printing applicability is poor.
Disclosure of Invention
Based on the situation, the invention aims to provide the environment-friendly water-based ink for printing the shopping bags and the preparation method thereof, which can effectively solve the problems.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the environment-friendly water-based ink for printing the shopping bags comprises the following raw materials in parts by weight: 30-35 parts of water-soluble acrylic resin, 15-20 parts of pigment, 35-40 parts of water-based ink binder, 1-5 parts of dispersant, 1-5 parts of flatting agent, 0.2-2 parts of defoaming agent, 0.2-2 parts of antistatic agent, 0.2-2 parts of pH regulator, 1-5 parts of wear-resisting agent and 15-25 parts of deionized water; the water-based ink vehicle comprises the following raw materials in parts by weight: 45-50 parts of aqueous polyurethane resin, 5-10 parts of porous graphene, 35-40 parts of hydrochloric acid solution, 1-5 parts of silane coupling agent and 20-25 parts of ethanol water solution.
Preferably, the environment-friendly water-based ink comprises the following raw materials in parts by weight: 35 parts of water-soluble acrylic resin, 15 parts of pigment, 38 parts of water-based ink binder, 2 parts of dispersant, 3 parts of flatting agent, 1 part of defoaming agent, 1 part of antistatic agent, 1 part of pH regulator, 3 parts of wear-resisting agent and 25 parts of deionized water; the water-based ink vehicle comprises the following raw materials in parts by weight: 45 parts of aqueous polyurethane resin, 8 parts of porous graphene, 40 parts of hydrochloric acid solution, 5 parts of silane coupling agent and 25 parts of ethanol aqueous solution.
Preferably, the pigment is a mixture of an organic pigment and an inorganic pigment.
More preferably, the organic pigment is one or more of phthalocyanine green, phthalocyanine blue, permanent red, benzidine yellow and kaolin; the inorganic pigment is one or a combination of titanium dioxide, iron oxide yellow, iron oxide red and calcium carbonate.
Preferably, the dispersant is one or more of sodium dodecyl sulfate, polyacrylamide and sodium polyacrylate.
Preferably, the leveling agent is one or more of silane-based aqueous leveling and wetting leveling agent, anionic perfluorocarbon surfactant or diisooctyl sodium sulfosuccinate solution.
Preferably, the defoaming agent is one or a combination of a water-based mineral oil defoaming agent, a water-based silicone defoaming agent and a composite defoaming agent.
Preferably, the antistatic agent is sodium alkylsulfonate or polyoxyethylene; the pH regulator is ammonia water or diethanolamine; the wear-resisting agent is white emulsified wax.
Preferably, the mass fraction of the hydrochloric acid solution is 3-5%; the mass fraction of the ethanol water solution is 35-40%.
The invention also provides a preparation method of the environment-friendly water-based ink for printing the shopping bags, which comprises the following steps:
s1 preparation of aqueous ink vehicle
S1.1, respectively weighing the following components in parts by weight: the preparation method comprises the following steps of (1) preparing aqueous polyurethane resin, porous graphene, a hydrochloric acid solution, a silane coupling agent and an ethanol aqueous solution;
s1.2, grinding porous graphene, sieving with a sieve of 400-500 meshes, adding into a hydrochloric acid solution, fully stirring at 40-45 ℃ for 1-3 h, filtering and drying to obtain acid-activated porous graphene powder;
s1.3, adding acid activated porous graphene powder into an ethanol water solution, fully and uniformly stirring, adding a silane coupling agent, fully stirring for 2-4 hours at 65-70 ℃, filtering and drying to obtain modified porous graphene powder;
s1.4, adding the modified porous graphene powder into a certain amount of deionized water to be uniformly dispersed, adding a water-based polyurethane resin, and stirring and mixing to obtain a water-based ink binder;
s2 preparation of environment-friendly water-based ink
S2.1, respectively weighing the following components in parts by weight: water-soluble acrylic resin, pigment, water-based ink binder, dispersant, flatting agent, defoaming agent, antistatic agent, pH regulator, wear-resisting agent and deionized water;
s2.2, except for the pH regulator, uniformly mixing the rest raw materials in the step S2.1 according to the weighed parts, grinding and dispersing at a high speed in a dispersion grinder, and dispersing for 10-15 min at 1300-1500 rpm;
and S2.3, adding a pH regulator to adjust the pH value to be 8-9 after the required fineness is reached, and discharging to prepare the environment-friendly water-based ink.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the environment-friendly water-based ink for printing the shopping bags is prepared by selecting raw materials, optimizing the content of each raw material, and selecting water-soluble acrylic resin, pigment, water-based ink binder, dispersant, flatting agent, defoaming agent, antistatic agent, pH regulator, wear-resisting agent and deionized water in proper proportion, so that the advantages of the water-based ink, the pigment, the water-based ink binder, the dispersant, the flatting agent, the defoaming agent, the antistatic agent, the pH regulator, the wear-resisting agent and the deionized water are fully exerted, mutually supplemented and mutually promoted, and the prepared environment-friendly water-based ink for printing the shopping.
The water-based ink binder is added into the raw materials of the water-based ink in a proper proportion, is uniformly dispersed in the raw material system of the water-based ink, is matched with other components, and plays a good synergistic role, so that the environment-friendly water-based ink for printing shopping bags has excellent adhesion on the shopping bags, and has stronger stability and migration resistance.
The antistatic agent and the pH regulator are added into the raw materials of the water-based ink in proper proportion, so that the water-based ink is uniformly dispersed in a raw material system of the water-based ink, is matched with other components, and plays a good synergistic role, so that the environment-friendly water-based ink for printing shopping bags has good antistatic capability on the shopping bags, and meanwhile, the alkalescent ink system has stronger stability and is beneficial to long-time storage.
The raw materials of the water-based ink binder are added with the porous graphene in a proper proportion, so that the water-based ink binder is uniformly dispersed in a raw material system and is matched with other components to play a good synergistic effect. Meanwhile, the heat resistance and the wear resistance of the water-based ink are further improved.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in connection with specific examples, which should not be construed as limiting the present patent.
The test methods or test methods described in the following examples are conventional methods unless otherwise specified; the reagents and materials, unless otherwise indicated, are conventionally obtained commercially or prepared by conventional methods.
Example 1:
the environment-friendly water-based ink for printing the shopping bags comprises the following raw materials in parts by weight: 30-35 parts of water-soluble acrylic resin, 15-20 parts of pigment, 35-40 parts of water-based ink binder, 1-5 parts of dispersant, 1-5 parts of flatting agent, 0.2-2 parts of defoaming agent, 0.2-2 parts of antistatic agent, 0.2-2 parts of pH regulator, 1-5 parts of wear-resisting agent and 15-25 parts of deionized water; the water-based ink vehicle comprises the following raw materials in parts by weight: 45-50 parts of aqueous polyurethane resin, 5-10 parts of porous graphene, 35-40 parts of hydrochloric acid solution, 1-5 parts of silane coupling agent and 20-25 parts of ethanol water solution.
In this embodiment, the environment-friendly water-based ink preferably comprises the following raw materials in parts by weight: 35 parts of water-soluble acrylic resin, 15 parts of pigment, 38 parts of water-based ink binder, 2 parts of dispersant, 3 parts of flatting agent, 1 part of defoaming agent, 1 part of antistatic agent, 1 part of pH regulator, 3 parts of wear-resisting agent and 25 parts of deionized water; the water-based ink vehicle preferably comprises the following raw materials in parts by weight: 45 parts of aqueous polyurethane resin, 8 parts of porous graphene, 40 parts of hydrochloric acid solution, 5 parts of silane coupling agent and 25 parts of ethanol aqueous solution.
In this embodiment, the pigment is preferably a mixture of an organic pigment and an inorganic pigment.
In this embodiment, the organic pigment is preferably one or more of phthalocyanine green, phthalocyanine blue, permanent red, benzidine yellow and kaolin; the inorganic pigment is preferably one or a combination of titanium dioxide, iron oxide yellow, iron oxide red and calcium carbonate.
In the embodiment, the dispersant is preferably one or more of sodium dodecyl sulfate, polyacrylamide and sodium polyacrylate.
In this embodiment, the leveling agent is preferably one or more of a silane-based aqueous leveling wetting leveling agent, an anionic perfluorocarbon surfactant, or a solution of sodium diisooctylsulfosuccinate.
In the embodiment, the defoaming agent is preferably one or more of a combination of an aqueous mineral oil defoaming agent, an aqueous silicone defoaming agent and a composite defoaming agent.
In the present embodiment, the antistatic agent is preferably sodium alkylsulfonate or polyoxyethylene; the pH regulator is ammonia water or diethanolamine; the wear-resisting agent is white emulsified wax.
In the embodiment, the mass fraction of the hydrochloric acid solution is preferably 3-5%; the mass fraction of the ethanol water solution is preferably 35-40%.
In this embodiment, a preparation method of the environment-friendly water-based ink for printing shopping bags is further provided, which includes the following steps:
s1 preparation of aqueous ink vehicle
S1.1, respectively weighing the following components in parts by weight: the preparation method comprises the following steps of (1) preparing aqueous polyurethane resin, porous graphene, a hydrochloric acid solution, a silane coupling agent and an ethanol aqueous solution;
s1.2, grinding porous graphene, sieving with a sieve of 400-500 meshes, adding into a hydrochloric acid solution, fully stirring at 40-45 ℃ for 1-3 h, filtering and drying to obtain acid-activated porous graphene powder;
s1.3, adding acid activated porous graphene powder into an ethanol water solution, fully and uniformly stirring, adding a silane coupling agent, fully stirring for 2-4 hours at 65-70 ℃, filtering and drying to obtain modified porous graphene powder;
s1.4, adding the modified porous graphene powder into a certain amount of deionized water to be uniformly dispersed, adding a water-based polyurethane resin, and stirring and mixing to obtain a water-based ink binder;
s2 preparation of environment-friendly water-based ink
S2.1, respectively weighing the following components in parts by weight: water-soluble acrylic resin, pigment, water-based ink binder, dispersant, flatting agent, defoaming agent, antistatic agent, pH regulator, wear-resisting agent and deionized water;
s2.2, except for the pH regulator, uniformly mixing the rest raw materials in the step S2.1 according to the weighed parts, grinding and dispersing at a high speed in a dispersion grinder, and dispersing for 10-15 min at 1300-1500 rpm;
and S2.3, adding a pH regulator to adjust the pH value to be 8-9 after the required fineness is reached, and discharging to prepare the environment-friendly water-based ink.
Example 2:
the environment-friendly water-based ink for printing the shopping bags comprises the following raw materials in parts by weight: 30 parts of water-soluble acrylic resin, 15 parts of pigment, 35 parts of water-based ink binder, 2 parts of dispersant, 1 part of flatting agent, 0.5 part of defoaming agent, 01 parts of antistatic agent, 1.5 parts of pH regulator, 2 parts of wear-resisting agent and 25 parts of deionized water; the water-based ink vehicle comprises the following raw materials in parts by weight: 45 parts of aqueous polyurethane resin, 5 parts of porous graphene, 35 parts of hydrochloric acid solution, 3 parts of silane coupling agent and 25 parts of ethanol aqueous solution.
In this example, the pigment is a mixture of an organic pigment and an inorganic pigment.
In this example, the organic pigment is a permanent red and bisaniline yellow composition; the inorganic pigment is a composition of titanium dioxide and calcium carbonate.
In this example, the dispersant is sodium lauryl sulfate.
In this example, the leveling agent was a silane-based aqueous leveling wetting leveling agent.
In this example, the defoamer was an aqueous mineral oil type defoamer.
In this embodiment, the antistatic agent is sodium alkyl sulfonate; the pH regulator is ammonia water; the wear-resisting agent is white emulsified wax.
In this embodiment, the mass fraction of the hydrochloric acid solution is 3%; the mass fraction of the ethanol water solution is 35%.
In this embodiment, a preparation method of the environment-friendly water-based ink for printing shopping bags is further provided, which includes the following steps:
s1 preparation of aqueous ink vehicle
S1.1, respectively weighing the following components in parts by weight: the preparation method comprises the following steps of (1) preparing aqueous polyurethane resin, porous graphene, a hydrochloric acid solution, a silane coupling agent and an ethanol aqueous solution;
s1.2, grinding the porous graphene, sieving with a 400-mesh sieve, adding into a hydrochloric acid solution, fully stirring at 40 ℃ for 1h, filtering and drying to obtain acid-activated porous graphene powder;
s1.3, adding the acid-activated porous graphene powder into an ethanol aqueous solution, fully and uniformly stirring, adding a silane coupling agent, fully stirring for 2 hours at 65 ℃, filtering and drying to obtain modified porous graphene powder;
s1.4, adding the modified porous graphene powder into a certain amount of deionized water to be uniformly dispersed, adding a water-based polyurethane resin, and stirring and mixing to obtain a water-based ink binder;
s2 preparation of environment-friendly water-based ink
S2.1, respectively weighing the following components in parts by weight: water-soluble acrylic resin, pigment, water-based ink binder, dispersant, flatting agent, defoaming agent, antistatic agent, pH regulator, wear-resisting agent and deionized water;
s2.2, except for the pH regulator, uniformly mixing the rest raw materials in the step S2.1 according to the weighed parts, grinding and dispersing at a high speed in a dispersion grinder, and dispersing for 10min at 1300 rpm;
and S2.3, adding a pH regulator to adjust the pH value to be 8-9 after the required fineness is reached, and discharging to prepare the environment-friendly water-based ink.
Example 3:
the environment-friendly water-based ink for printing the shopping bags comprises the following raw materials in parts by weight: 35 parts of water-soluble acrylic resin, 15 parts of pigment, 38 parts of water-based ink binder, 2 parts of dispersant, 3 parts of flatting agent, 1 part of defoaming agent, 1 part of antistatic agent, 1 part of pH regulator, 3 parts of wear-resisting agent and 25 parts of deionized water; the water-based ink vehicle comprises the following raw materials in parts by weight: 45 parts of aqueous polyurethane resin, 8 parts of porous graphene, 40 parts of hydrochloric acid solution, 5 parts of silane coupling agent and 25 parts of ethanol aqueous solution.
In this example, the pigment is a mixture of an organic pigment and an inorganic pigment.
In this embodiment, the organic pigment is phthalocyanine green; the inorganic pigment is titanium dioxide.
In this example, the dispersant is a combination of sodium lauryl sulfate and polyacrylamide.
In this embodiment, the leveling agent is an anionic perfluorocarbon surfactant.
In this example, the defoamer was an aqueous silicone-based defoamer.
In this embodiment, the antistatic agent is polyoxyethylene; the pH regulator is diethanolamine; the wear-resisting agent is white emulsified wax.
In this embodiment, the mass fraction of the hydrochloric acid solution is 4%; the mass fraction of the ethanol water solution is 38%.
In this embodiment, a preparation method of the environment-friendly water-based ink for printing shopping bags is further provided, which includes the following steps:
s1 preparation of aqueous ink vehicle
S1.1, respectively weighing the following components in parts by weight: the preparation method comprises the following steps of (1) preparing aqueous polyurethane resin, porous graphene, a hydrochloric acid solution, a silane coupling agent and an ethanol aqueous solution;
s1.2, grinding porous graphene, sieving with a 450-mesh sieve, adding into a hydrochloric acid solution, fully stirring at 40 ℃ for 2h, filtering and drying to obtain acid-activated porous graphene powder;
s1.3, adding the acid-activated porous graphene powder into an ethanol aqueous solution, fully and uniformly stirring, adding a silane coupling agent, fully stirring for 3 hours at 65 ℃, filtering and drying to obtain modified porous graphene powder;
s1.4, adding the modified porous graphene powder into a certain amount of deionized water to be uniformly dispersed, adding a water-based polyurethane resin, and stirring and mixing to obtain a water-based ink binder;
s2 preparation of environment-friendly water-based ink
S2.1, respectively weighing the following components in parts by weight: water-soluble acrylic resin, pigment, water-based ink binder, dispersant, flatting agent, defoaming agent, antistatic agent, pH regulator, wear-resisting agent and deionized water;
s2.2, except for the pH regulator, uniformly mixing the rest raw materials in the step S2.1 according to the weighed parts, grinding and dispersing at a high speed in a dispersion grinder, and dispersing for 15min at 1500 rpm;
and S2.3, adding a pH regulator to adjust the pH value to be 8-9 after the required fineness is reached, and discharging to prepare the environment-friendly water-based ink.
Example 4:
the environment-friendly water-based ink for printing the shopping bags comprises the following raw materials in parts by weight: 35 parts of water-soluble acrylic resin, 18 parts of pigment, 38 parts of water-based ink binder, 3 parts of dispersant, 2 parts of flatting agent, 1 part of defoaming agent, 1 part of antistatic agent, 2 parts of pH regulator, 1.5 parts of wear-resisting agent and 25 parts of deionized water; the water-based ink vehicle comprises the following raw materials in parts by weight: 50 parts of aqueous polyurethane resin, 10 parts of porous graphene, 38 parts of hydrochloric acid solution, 5 parts of silane coupling agent and 20 parts of ethanol aqueous solution.
In this example, the pigment is a mixture of an organic pigment and an inorganic pigment.
In this embodiment, the organic pigment is phthalocyanine blue; the inorganic pigment is iron oxide yellow.
In this example, the dispersant is polyacrylamide.
In this embodiment, the leveling agent is a sodium diisooctyl sulfosuccinate solution.
In this example, the defoamer was an aqueous silicone-based defoamer.
In this embodiment, the antistatic agent is polyoxyethylene; the pH regulator is ammonia water; the wear-resisting agent is white emulsified wax.
In this embodiment, the mass fraction of the hydrochloric acid solution is 5%; the mass fraction of the ethanol water solution is 40%.
In this embodiment, a preparation method of the environment-friendly water-based ink for printing shopping bags is further provided, which includes the following steps:
s1 preparation of aqueous ink vehicle
S1.1, respectively weighing the following components in parts by weight: the preparation method comprises the following steps of (1) preparing aqueous polyurethane resin, porous graphene, a hydrochloric acid solution, a silane coupling agent and an ethanol aqueous solution;
s1.2, grinding porous graphene, sieving with a 500-mesh sieve, adding into a hydrochloric acid solution, fully stirring at 45 ℃ for 2 hours, filtering and drying to obtain acid-activated porous graphene powder;
s1.3, adding the acid-activated porous graphene powder into an ethanol aqueous solution, fully and uniformly stirring, adding a silane coupling agent, fully stirring for 3 hours at 70 ℃, filtering and drying to obtain modified porous graphene powder;
s1.4, adding the modified porous graphene powder into a certain amount of deionized water to be uniformly dispersed, adding a water-based polyurethane resin, and stirring and mixing to obtain a water-based ink binder;
s2 preparation of environment-friendly water-based ink
S2.1, respectively weighing the following components in parts by weight: water-soluble acrylic resin, pigment, water-based ink binder, dispersant, flatting agent, defoaming agent, antistatic agent, pH regulator, wear-resisting agent and deionized water;
s2.2, except for the pH regulator, uniformly mixing the rest raw materials in the step S2.1 according to the weighed parts, grinding and dispersing at a high speed in a dispersion grinder, and dispersing for 13min at 1400 rpm;
and S2.3, adding a pH regulator to adjust the pH value to be 8-9 after the required fineness is reached, and discharging to prepare the environment-friendly water-based ink.
Comparative example 1:
the difference from example 4 is that there is no aqueous ink vehicle, and the rest is the same as example 4.
Comparative example 2:
the difference from example 4 is that there is no porous graphene, and the rest is the same as example 4.
The environmental-friendly aqueous inks for shopping bag printing obtained in examples 2 to 4 of the present invention and comparative examples 1 to 2 and the ordinary aqueous inks were subjected to the performance tests, and the test results are shown in table 1.
The ink tinting strength of the water-based ink is detected by GB/T14624.2-2008; the ink initial drying detection method is carried out according to GB/T13217.5-2008; the ink adhesion fastness detection method is carried out according to GB/T13217.7-2009.
TABLE 1
From the above table analysis, it can be seen that comparative example 1 compares with example 4: the water-based ink binder with a proper proportion is added to be matched with other components to play a good synergistic role, so that the environment-friendly water-based ink for the shopping bag printing has excellent adhesion fastness and tinting strength, and the water-based ink has stronger stability and migration resistance.
From the above table analysis, it can be seen that comparative example 2 compares with example 4: the porous graphene with a proper proportion is added and matched with other components to play a good synergistic effect, so that the drying speed of the environment-friendly water-based ink for printing the shopping bag is remarkably improved.
In conclusion, the environment-friendly water-based ink for printing shopping bags has good performances in all aspects, is remarkably improved, can greatly meet the market demands, and is optimal in performance under the condition of comparison, and the corresponding formula dosage and the preparation method are optimal.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (10)
1. The environment-friendly water-based ink for printing shopping bags is characterized by comprising the following raw materials in parts by weight: 30-35 parts of water-soluble acrylic resin, 15-20 parts of pigment, 35-40 parts of water-based ink binder, 1-5 parts of dispersant, 1-5 parts of flatting agent, 0.2-2 parts of defoaming agent, 0.2-2 parts of antistatic agent, 0.2-2 parts of pH regulator, 1-5 parts of wear-resisting agent and 15-25 parts of deionized water; the water-based ink vehicle comprises the following raw materials in parts by weight: 45-50 parts of aqueous polyurethane resin, 5-10 parts of porous graphene, 35-40 parts of hydrochloric acid solution, 1-5 parts of silane coupling agent and 20-25 parts of ethanol water solution.
2. The environment-friendly water-based ink for printing shopping bags according to claim 1, which is characterized by comprising the following raw materials in parts by weight: 35 parts of water-soluble acrylic resin, 15 parts of pigment, 38 parts of water-based ink binder, 2 parts of dispersant, 3 parts of flatting agent, 1 part of defoaming agent, 1 part of antistatic agent, 1 part of pH regulator, 3 parts of wear-resisting agent and 25 parts of deionized water; the water-based ink vehicle comprises the following raw materials in parts by weight: 45 parts of aqueous polyurethane resin, 8 parts of porous graphene, 40 parts of hydrochloric acid solution, 5 parts of silane coupling agent and 25 parts of ethanol aqueous solution.
3. The eco-friendly aqueous ink for shopping bag printing as claimed in claim 1, wherein the pigment is a mixture of an organic pigment and an inorganic pigment.
4. The eco-friendly aqueous ink for shopping bag printing as claimed in claim 3, wherein the organic pigment is one or more of phthalocyanine green, phthalocyanine blue, permanent red, benzidine yellow and kaolin; the inorganic pigment is one or a combination of titanium dioxide, iron oxide yellow, iron oxide red and calcium carbonate.
5. The environment-friendly water-based ink for shopping bag printing as claimed in claim 1, wherein the dispersant is one or more of sodium dodecyl sulfate, polyacrylamide and sodium polyacrylate.
6. The environmentally friendly aqueous ink for shopping bag printing as defined in claim 1, wherein the leveling agent is one or more of silane-based aqueous leveling wetting leveling agent, anionic perfluorocarbon surfactant or sodium diisooctyl sulfosuccinate solution.
7. The environmentally friendly aqueous ink for shopping bag printing as claimed in claim 1, wherein the defoaming agent is one or more of an aqueous mineral oil type defoaming agent, an aqueous silicone type defoaming agent and a composite type defoaming agent.
8. The eco-friendly aqueous ink for shopping bag printing as claimed in claim 1, wherein the antistatic agent is sodium alkylsulfonate or polyoxyethylene; the pH regulator is ammonia water or diethanolamine; the wear-resisting agent is white emulsified wax.
9. The environment-friendly water-based ink for shopping bag printing as claimed in claim 1, wherein the hydrochloric acid solution is in a mass fraction of 3 to 5%; the mass fraction of the ethanol water solution is 35-40%.
10. A preparation method of the environment-friendly water-based ink for printing shopping bags as defined in any one of claims 1 to 9, comprising the following steps:
s1 preparation of aqueous ink vehicle
S1.1, respectively weighing the following components in parts by weight: the preparation method comprises the following steps of (1) preparing aqueous polyurethane resin, porous graphene, a hydrochloric acid solution, a silane coupling agent and an ethanol aqueous solution;
s1.2, grinding porous graphene, sieving with a sieve of 400-500 meshes, adding into a hydrochloric acid solution, fully stirring at 40-45 ℃ for 1-3 h, filtering and drying to obtain acid-activated porous graphene powder;
s1.3, adding acid activated porous graphene powder into an ethanol water solution, fully and uniformly stirring, adding a silane coupling agent, fully stirring for 2-4 hours at 65-70 ℃, filtering and drying to obtain modified porous graphene powder;
s1.4, adding the modified porous graphene powder into a certain amount of deionized water to be uniformly dispersed, adding a water-based polyurethane resin, and stirring and mixing to obtain a water-based ink binder;
s2 preparation of environment-friendly water-based ink
S2.1, respectively weighing the following components in parts by weight: water-soluble acrylic resin, pigment, water-based ink binder, dispersant, flatting agent, defoaming agent, antistatic agent, pH regulator, wear-resisting agent and deionized water;
s2.2, except for the pH regulator, uniformly mixing the rest raw materials in the step S2.1 according to the weighed parts, grinding and dispersing at a high speed in a dispersion grinder, and dispersing for 10-15 min at 1300-1500 rpm;
and S2.3, adding a pH regulator to adjust the pH value to be 8-9 after the required fineness is reached, and discharging to prepare the environment-friendly water-based ink.
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