CN113185633A - Acrylic acid copolymer emulsion, water-based ink and preparation method thereof - Google Patents
Acrylic acid copolymer emulsion, water-based ink and preparation method thereof Download PDFInfo
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- CN113185633A CN113185633A CN202110500089.8A CN202110500089A CN113185633A CN 113185633 A CN113185633 A CN 113185633A CN 202110500089 A CN202110500089 A CN 202110500089A CN 113185633 A CN113185633 A CN 113185633A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
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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
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
- C09D11/033—Printing inks characterised by features other than the chemical nature of the binder characterised by the solvent
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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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Abstract
The invention provides an acrylic acid copolymer emulsion, which is prepared by copolymerizing methyl methacrylate, n-butyl acrylate, isooctyl acrylate, acrylic acid and hydroxyethyl methacrylate monomers.
Description
Technical Field
The invention relates to the field of water-based ink, and particularly relates to acrylic acid copolymer emulsion, water-based ink and a preparation method thereof.
Background
The ink is divided into solvent type ink and water-based ink, the solvent type ink has the characteristics of large smell and high VOC (volatile organic compound) and is not beneficial to human health and environment, therefore, the water-based ink becomes a market trend, the binder of the water-based ink mainly comprises water-based resin, including colloidal dispersoid, emulsion polymer and water-diluted polymer, at present, part of the binder can be applied to plastics with stronger polarity, such as PC and ABS, but the binder is poorer in adhesion to PMMA plastics, mainly applied to paper printing, and part of the binder can be applied to spraying of metal materials.
The physical and chemical properties of the binder have important influence on the water-based ink, and the combination of the binder and the auxiliary agent has important influence on the appearance of the water-based ink.
At present, amino monomer copolymerization or amino resin addition, styrene copolymerization, epoxy resin copolymerization or mixing, polyurethane mixing or monomer copolymerization introduction polyurethane or inorganic nano ion modification are mainly adopted for solving the problems, but at present, the technical problems cannot be solved only by acrylic monomer copolymerization emulsion.
Therefore, it is necessary to provide an acrylic copolymer emulsion as a binder, which has boiling resistance, alcohol scrub resistance and excellent adhesion to PMMA, and to provide a water-based ink with good properties by combining the provided acrylic copolymer emulsion binder, an assistant and a color paste, and to satisfy the properties of boiling resistance, alcohol scrub resistance, strong acid resistance and good adhesion to PMMA.
Disclosure of Invention
The first purpose of the present invention is to provide an acrylic copolymer emulsion to solve the disadvantages of the prior art.
In order to achieve the above object, the present invention provides an acrylic copolymer emulsion, which is characterized by being prepared by the following preparation method:
adding the A component primer into a reaction kettle at room temperature, stirring at 400r/Min under 300-;
stirring the component B in a pre-emulsification kettle for 15 +/-5 minutes to prepare a pre-emulsification monomer at the rotating speed of 300 +/-50 r/min;
heating and controlling the temperature to be 81-83 ℃, simultaneously dripping pre-emulsified monomers and the rest C component initiator liquid into the reaction kettle filled with the A component base material, finishing dripping within 3-3.5 hours, and continuously carrying out heat preservation and copolymerization for 1-1.5 hours;
cooling to 60 ℃, adjusting the pH value to 7-8, cooling to below 45 ℃, filtering and discharging to prepare the acrylic copolymer emulsion;
the A-component base material comprises the following components: deionized water, methyl methacrylate, n-butyl acrylate, isooctyl acrylate, acrylic acid, hydroxyethyl methacrylate, a buffering agent, an anionic emulsifier and a nonionic emulsifier;
the component B comprises the following components: deionized water; methyl methacrylate, n-butyl acrylate, isooctyl acrylate, hydroxyethyl methacrylate, acrylic acid, an anionic emulsifier, a nonionic emulsifier;
the C-component initiator liquid comprises the following components: a peroxysulfuric acid free radical initiator and deionized water;
the acrylic acid copolymerization emulsion comprises the following comonomers, emulsifier, initiator, buffering agent and deionized water in percentage by mass:
the mass fraction of the comonomer of the component A backing material is 10-20% of that of the comonomer of the acrylic acid copolymerization emulsion, and the mass ratio of the nonionic emulsifier to the anionic emulsifier is 1.5-2.
Preferably, the peroxysulfuric free radical initiator comprises one or a combination of three of ammonium persulfate, potassium persulfate, and sodium persulfate.
Preferably, the nonionic emulsifier is polyoxyethylene octyl phenol ether, and the anionic emulsifier is sodium dodecyl benzene sulfonate.
Preferably, the buffer comprises one or a combination of sodium bicarbonate and disodium hydrogen phosphate.
The invention also aims to provide a water-based ink comprising the acrylic copolymer emulsion, which comprises the following components in percentage by mass:
the acrylic acid copolymer emulsion is characterized by also comprising the acrylic acid copolymer emulsion, wherein the mass fraction of the acrylic acid copolymer emulsion is 40-75%.
Preferably, the film-forming aid consists of 1-5% of diethylene glycol ethyl ether and 2-10% of dipropylene glycol butyl ether by mass.
Preferably, the anti-foaming agent comprises one or a combination of TEGO 902W and TEGO 904W.
Preferably, the leveling agent includes BYK-333.
Preferably, the matting agent comprises OK 500.
Preferably, the thickener comprises PS 166.
Preferably, the wetting agent includes one or a combination of both TEGO 4100 and TEGO 270.
Preferably, the neutralizing agent comprises one or a combination of several of dimethylethanolamine, ammonia, 2-aminomethyl-1-propanol and AN-130.
Another object of the present invention is to provide a method for preparing the aqueous ink, which comprises the steps of:
taking acrylic acid copolymer emulsion as a main body, adding deionized water, color paste, film forming auxiliary agent, defoaming agent, flatting agent, wetting agent, neutralizing agent, thickening agent and matting powder, stirring and dispersing uniformly at 800r/min for 600 plus materials, discharging and filtering to prepare the finished product of the water-based ink.
Compared with the prior art, the invention has the beneficial effects that:
the acrylic acid copolymerization emulsion is prepared by reasonably blending the proportion of the comonomer and copolymerizing by adopting a semi-continuous reaction method, has strong acid resistance, boiling resistance and alcohol scrub resistance, has the polarity and the structure similar to those of PMMA and has the solubility parameter similar to those of PMMA due to the fact that the comonomer adopts acrylic substances, has good adhesive force to the PMMA, solves the problem of paint or ink dropping after painting or printing ink on the surface of the PMMA, and has the vitrification temperature of 80 ℃.
Based on the acrylic acid copolymer emulsion, the water-based ink with boiling resistance, alcohol scrubbing resistance, low odor, low VOC, convenient operation, strong acid resistance and excellent adhesion to PMMA is prepared.
The invention also provides a preparation method of the water-based ink, which is simple and convenient to operate, and the water-based ink prepared by the method has the excellent performances of boiling resistance, alcohol scrubbing resistance, low odor, low VOC, convenience in operation and excellent adhesion to PMMA.
Detailed Description
The present invention is further illustrated by the following specific examples, but it should be noted that the specific material ratios, process conditions, results, etc. described in the examples of the present invention are only for illustrating the present invention and are not to be construed as limiting the scope of the present invention, and all equivalent changes and modifications according to the spirit of the present invention should be covered by the scope of the present invention.
Example 1:
an acrylic copolymer emulsion, which is characterized by being prepared by the following preparation method:
adding the A component primer into a reaction kettle at room temperature, stirring at 400r/Min under 300-;
stirring the component B in a pre-emulsification kettle for 15 minutes to prepare a pre-emulsification monomer, wherein the rotating speed is 300 r/min;
heating and controlling the temperature to be 81 ℃, simultaneously dripping the pre-emulsified monomer and the rest C component initiator liquid into the reaction kettle filled with the A component base material, finishing dripping within 3 hours, and continuing to carry out heat preservation and copolymerization for 1 hour;
cooling to 60 ℃, adding ammonia water, adjusting the pH to 7-8, cooling to below 45 ℃, filtering and discharging to prepare acrylic copolymer emulsion;
the A-component base material comprises the following components: deionized water, methyl methacrylate, n-butyl acrylate, isooctyl acrylate, acrylic acid, hydroxyethyl methacrylate and a buffering agent, wherein the buffering agent is sodium bicarbonate and an anionic emulsifier, the anionic emulsifier is sodium dodecyl benzene sulfonate and a non-anionic emulsifier, and the non-anionic emulsifier is polyoxyethylene octyl phenol ether;
the component B comprises the following components: deionized water, methyl methacrylate, n-butyl acrylate, isooctyl acrylate, hydroxyethyl methacrylate, acrylic acid and an anionic emulsifier, wherein the anionic emulsifier is sodium dodecyl benzene sulfonate and a nonionic emulsifier, and the nonionic emulsifier is polyoxyethylene octyl phenol ether;
the C-component initiator liquid comprises the following components: ammonium persulfate and deionized water;
the acrylic acid copolymerization emulsion comprises the following comonomers, emulsifier, initiator, buffering agent and deionized water in percentage by mass:
the mass fraction of the comonomer of the component A backing material is 11.93 percent of that of the comonomer of the acrylic acid copolymerization emulsion, and the mass ratio of the polyoxyethylene octyl phenol ether to the sodium dodecyl benzene sulfonate is 1.7.
In other embodiments of the present invention, the mass fractions of the comonomer, emulsifier, initiator, buffer and deionized water of the acrylic copolymer emulsion are other ratios, for example, the mass fraction of methyl methacrylate is 31%, 32%, 33%, 34%, 35%, 37%, 38%; the mass fraction of the n-butyl acrylate is 10%, 11%, 12%, 13%, 15%, 16%; the mass fraction of the isooctyl acrylate is 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.4%, 1.5%, the mass fraction of the acrylic acid is 0.6%, 0.7%, 0.8%, 0.9%, the mass fraction of the hydroxyethyl methacrylate is 0.4%, 0.5%, the mass fraction of the anionic emulsifier is 0.75%, 0.95%, 1.05%, the mass fraction of the nonionic emulsifier is 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, other anionic emulsifiers, such as sodium dodecyl sulfate, may implement the present invention in addition to the sodium dodecyl benzene sulfonate, and other nonionic emulsifiers, such as the isomeric alcohol polyoxyethylene ether 710, may implement the present invention in addition to the polyoxyethylene octyl phenol ether.
In other embodiments of the present invention, other persulfate free-radical initiators may be used in addition to ammonium persulfate, e.g., potassium persulfate, sodium persulfate, and other buffers may be used in addition to sodium bicarbonate, e.g., disodium hydrogen phosphate, in other embodiments of the present invention, other agents may be used to adjust the pH of the copolymerization system, e.g., AMP-95, and the choice of pH adjuster is not intended to limit the scope of the present invention.
In other embodiments of the invention, the mass ratio of the nonionic emulsifier to the anionic emulsifier is 1.7, which includes 1.6, 1.8 and 1.9.
The reaction is semi-continuous emulsion polymerization, the conversion rate of monomers is mainly influenced according to the common knowledge temperature of the emulsion polymerization, the monomer conversion rate is not greatly different in a small range, and the influence on the performance of the copolymer is small, in other embodiments, the component A base material is added into a reaction kettle at room temperature, the stirring speed is 310r/Min, 320r/Min, 330r/Min, 340r/Min, 350r/Min, 360r/Min, 370r/Min, 380r/Min and 390r/Min, the temperature is increased to 71 ℃, 72 ℃, 73 ℃ and 74 ℃, and the temperature is increased to 82 ℃ before the pre-emulsified monomers are added.
In emulsion polymerization, the particle size and the particle size distribution of the final product are influenced by the amount and the proportion of the emulsifier, the mass ratio of the nonionic emulsifier to the anionic emulsifier is 1.5-2, the selection of the comonomer and the selection of the monomer mass ratio are related to the performance of the copolymer, and the boiling resistance, the acid resistance and the alcohol scouring resistance are influenced by exceeding a certain range.
The glass transition temperature of the acrylic copolymer obtained in example 1 was 80 ℃ and the test standard was GB 11998-89.
Based on the acrylic acid copolymerization emulsion, the water-based ink is also provided.
Example 2:
the water-based ink comprises the following components in percentage by mass:
the acrylic acid copolymer emulsion is characterized by further comprising the acrylic acid copolymer emulsion in the embodiment 1, wherein the mass fraction of the acrylic acid copolymer emulsion is 40.5%, the film-forming additive is composed of 1-5% by mass of diethylene glycol ethyl ether and 2-10% by mass of dipropylene glycol butyl ether, in the embodiment, the mass fraction of the diethylene glycol ethyl ether is 5%, the mass fraction of the dipropylene glycol butyl ether is 9%, the defoaming agent is composed of 0.2% by mass of TEGO 902W and 0.2% by mass of TEGO 904W, the leveling agent is BYK-333, the wetting agent is TEGO 4100, the neutralizing agent is dimethylethanolamine, the thickening agent is PS 166, and the matting powder is OK 500.
Example 3:
the water-based ink comprises the following components in percentage by mass:
the acrylic acid copolymer emulsion is characterized by further comprising the acrylic acid copolymer emulsion in the embodiment 1, wherein the mass fraction of the acrylic acid copolymer emulsion is 45.5%, the film-forming additive is composed of 1-5% by mass of diethylene glycol ethyl ether and 2-10% by mass of dipropylene glycol butyl ether, in the embodiment, the mass fraction of the diethylene glycol ethyl ether is 5%, the mass fraction of the dipropylene glycol butyl ether is 9%, the defoaming agent is composed of 0.2% by mass of TEGO 902W and 0.2% by mass of TEGO 904W, the leveling agent is BYK-333, the wetting agent is TEGO 4100, the neutralizing agent is dimethylethanolamine, the thickening agent is PS 166, and the matting powder is OK 500.
Example 4:
the water-based ink comprises the following components in percentage by mass:
the acrylic acid copolymer emulsion is characterized by further comprising the acrylic acid copolymer emulsion in the embodiment 1, wherein the mass fraction of the acrylic acid copolymer emulsion is 50.5%, the film-forming additive is composed of 1-5% by mass of diethylene glycol ethyl ether and 2-10% by mass of dipropylene glycol butyl ether, in the embodiment, the mass fraction of the diethylene glycol ethyl ether is 5%, the mass fraction of the dipropylene glycol butyl ether is 9%, the defoaming agent is composed of 0.2% by mass of TEGO 902W and 0.2% by mass of TEGO 904W, the leveling agent is BYK-333, the wetting agent is TEGO 4100, the neutralizing agent is dimethylethanolamine, the thickening agent is PS 166, and the matting powder is OK 500.
Example 5:
the water-based ink comprises the following components in percentage by mass:
the acrylic acid copolymer emulsion is characterized by further comprising the acrylic acid copolymer emulsion in the embodiment 1, wherein the mass fraction of the acrylic acid copolymer emulsion is 55.5%, the film-forming additive is composed of 1-5% by mass of diethylene glycol ethyl ether and 2-10% by mass of dipropylene glycol butyl ether, in the embodiment, the mass fraction of the diethylene glycol ethyl ether is 5%, the mass fraction of the dipropylene glycol butyl ether is 9%, the defoaming agent is composed of 0.2% by mass of TEGO 902W and 0.2% by mass of TEGO 904W, the leveling agent is BYK-333, the wetting agent is TEGO 4100, the neutralizing agent is dimethylethanolamine, the thickening agent is PS 166, and the matting powder is OK 500.
Example 6:
the water-based ink comprises the following components in percentage by mass:
the acrylic acid copolymer emulsion is characterized by further comprising the acrylic acid copolymer emulsion in the embodiment 1, wherein the mass fraction of the acrylic acid copolymer emulsion is 60.5%, the film-forming additive is composed of 1-5% by mass of diethylene glycol ethyl ether and 2-10% by mass of dipropylene glycol butyl ether, in the embodiment, the mass fraction of the diethylene glycol ethyl ether is 5%, the mass fraction of the dipropylene glycol butyl ether is 9%, the defoaming agent is composed of 0.2% by mass of TEGO 902W and 0.2% by mass of TEGO 904W, the leveling agent is BYK-333, the wetting agent is TEGO 4100, the neutralizing agent is dimethylethanolamine, the thickening agent is PS 166, and the matting powder is OK 500.
The aqueous inks described in the above examples were tested using the following method:
and (3) testing the adhesive force: GB/T9286-1998, testing the adhesive force before boiling, boiling for 2 hours at 100 ℃, and testing the adhesive force after standing for 2 hours;
alcohol scrub resistance test: GB/T23989-2009;
boiling resistance: boiling the mixture in water at 100 ℃ for two hours, and observing whether the water-based ink has a foreign body or not;
acid resistance: soaking for 48 hours at the concentration of 1mol/L hydrochloric acid, and observing whether the film falls off or changes color;
abrasion resistance: 500g force, 60 cycles to observe whether the paint film is abnormal and exposed to the substrate;
testing the hand perspiration resistance: wrapping the sample with soaked dust-free cloth and sealing with a plastic bag, placing in an environment of 45 ℃/95% RH for 48 hours, and recovering at normal temperature for 4 hours, and then checking the color, the falling condition and the adhesive force of the sample;
before the performance test, the prepared ink is coated on a PMMA substrate (the thickness of a dry film is 20-30 microns), placed for about 10 minutes, baked for 1 hour at the temperature of 70 ℃ in an oven, and placed for half an hour to test the performance of the ink.
And (3) testing results:
the boiling resistance, alcohol scrub resistance and acid resistance of the water-based ink are mainly related to the structure of an acrylic acid copolymer emulsion, the film forming property, smoothness, surface tension, glossiness and the like of the water-based ink are mainly related to a film forming auxiliary agent, a defoaming agent, a leveling agent, a wetting agent, a neutralizing agent, a thickening agent and matting powder, in the embodiment, the two film forming auxiliary agents adopt diethylene glycol ethyl ether and dipropylene glycol butyl ether, and the MFFT is effectively reduced by the two film forming auxiliary agents, so that the film forming property of a paint film is better; the defoaming agent adopts TEGO 902W and TEGO 904W, bubbles in the printing ink can be well eliminated, the leveling agent adopts BYK-333, the surface tension of the coating can be effectively reduced, the leveling property and uniformity are improved, and a flat, smooth and uniform coating film is formed in the drying and film-forming process of the printing ink; the TEGO 4100 is used as the wetting agent, so that the surface tension of the water-based paint is reduced, the sensitivity of the paint to substrate pollutants is reduced, the ink can be better spread on the substrate, and the probability of paint film defects such as shrinkage cavity, needle holes and the like of the paint film is reduced; dimethyl ethanolamine is used as a neutralizer, and the pH value of the ink is adjusted to be 8-9; PS 166 is adopted as a thickening agent to adjust the viscosity of the ink; the matting powder was OK500, which was used to change the gloss of the ink.
It should be noted that: the resin of the water-based ink has important influence on the performance of the water-based ink, the glass transition temperature of the resin has important influence on the performances of the water-based ink, such as water boiling resistance, no after-tack when being heated, and the like, and the water-based ink which is not modified by functional monomers, such as styrene, epoxy, nano particles, polyurethane, amino resin, and the like, has lower glass transition temperature, generally below 40 ℃, even below 20 ℃, and cannot meet the performances of water boiling resistance, alcohol scrubbing resistance, and the like.
In other embodiments, the mass fraction of the acrylic copolymer emulsion in the aqueous ink further includes 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, 70%, 71%, 72%, 73% and 74%, but is not limited to the examples.
In other embodiments, the mass fraction of deionized water in the aqueous ink further includes 4%, 5%, 7%, 8%, 10%, 11%, 13%, 14%, and is not limited to the examples described herein.
In other embodiments, the mass fraction of the color paste in the aqueous ink further includes 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 18%, 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, and is not limited to the following examples.
There is also provided a method of preparing the aqueous ink of examples 2-6 above:
example 7:
taking acrylic acid copolymer emulsion as a main body, adding deionized water, color paste, film forming auxiliary agent, defoaming agent, flatting agent, wetting agent, neutralizing agent, thickening agent and matting powder, stirring and dispersing uniformly at 800r/min for 600 plus materials, discharging and filtering to prepare the finished product of the water-based ink.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the present specification and directly/indirectly applied to other related technical fields within the spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. An acrylic copolymer emulsion, which is characterized by being prepared by the following preparation method:
adding the A component primer into a reaction kettle at room temperature, stirring at 400r/Min under 300-;
stirring the component B in a pre-emulsification kettle for 15 +/-5 minutes to prepare a pre-emulsification monomer at the rotating speed of 300 +/-50 r/min;
heating and controlling the temperature to be 81-83 ℃, simultaneously dripping pre-emulsified monomers and the rest C component initiator liquid into the reaction kettle filled with the A component base material, finishing dripping within 3-3.5 hours, and continuously carrying out heat preservation and copolymerization for 1-1.5 hours;
cooling to 60 ℃, adjusting the pH value to 7-8, cooling to below 45 ℃, filtering and discharging to prepare the acrylic copolymer emulsion;
the A-component base material comprises the following components: deionized water, methyl methacrylate, n-butyl acrylate, isooctyl acrylate, acrylic acid, hydroxyethyl methacrylate, a buffering agent, an anionic emulsifier and a nonionic emulsifier;
the component B comprises the following components: deionized water; methyl methacrylate, n-butyl acrylate, isooctyl acrylate, hydroxyethyl methacrylate, acrylic acid, an anionic emulsifier, a nonionic emulsifier;
the C-component initiator liquid comprises the following components: a peroxysulfuric acid free radical initiator and deionized water;
the acrylic acid copolymerization emulsion comprises the following comonomers, emulsifier, initiator, buffering agent and deionized water in percentage by mass:
the mass fraction of the comonomer of the component A backing material is 10-20% of that of the comonomer of the acrylic acid copolymerization emulsion, and the mass ratio of the nonionic emulsifier to the anionic emulsifier is 1.5-2.
2. The acrylic copolymer emulsion of claim 1 wherein said peroxydisulfate-type free radical initiator comprises one or a combination of three of ammonium persulfate, potassium persulfate and sodium persulfate.
3. The acrylic acid copolymer emulsion as claimed in claim 1, wherein the nonionic emulsifier is polyoxyethylene octylphenol ether, and the anionic emulsifier is sodium dodecylbenzene sulfonate.
4. The water-based ink comprises the following components in percentage by mass:
characterized in that the acrylic acid copolymerization emulsion is further provided according to any one of claims 1 to 3, and the mass fraction of the acrylic acid copolymerization emulsion is 40-75%.
5. The water-based ink according to claim 4, wherein the film forming aid comprises 1-5% by mass of diethylene glycol ethyl ether and 2-10% by mass of dipropylene glycol butyl ether.
6. The aqueous ink of claim 4, wherein the defoamer comprises one or a combination of TEGO 902W and TEGO 904W.
7. The aqueous ink of claim 4, wherein the leveling agent comprises BYK-333.
8. The aqueous ink according to claim 4, wherein the matting powder comprises OK 500.
9. The aqueous ink of claim 4, wherein the thickener comprises PS 166.
10. A method for producing an aqueous ink according to any one of claims 4 to 9, comprising the steps of:
taking acrylic acid copolymer emulsion as a main body, adding deionized water, color paste, film forming auxiliary agent, defoaming agent, flatting agent, wetting agent, neutralizing agent, thickening agent and matting powder, stirring and dispersing uniformly at 800r/min for 600 plus materials, discharging and filtering to prepare the finished product of the water-based ink.
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| CN108912832A (en) * | 2018-08-15 | 2018-11-30 | 芜湖扬展新材料科技服务有限公司 | A kind of modified aqueous acrylic acid resin flexible version water-based ink and preparation method thereof |
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| CN108912832A (en) * | 2018-08-15 | 2018-11-30 | 芜湖扬展新材料科技服务有限公司 | A kind of modified aqueous acrylic acid resin flexible version water-based ink and preparation method thereof |
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Application publication date: 20210730 |