CN113072844A - Aqueous coating liquid, preparation method and application thereof - Google Patents
Aqueous coating liquid, preparation method and application thereof Download PDFInfo
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- CN113072844A CN113072844A CN202110490036.2A CN202110490036A CN113072844A CN 113072844 A CN113072844 A CN 113072844A CN 202110490036 A CN202110490036 A CN 202110490036A CN 113072844 A CN113072844 A CN 113072844A
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- 239000011248 coating agent Substances 0.000 title claims abstract description 73
- 238000000576 coating method Methods 0.000 title claims abstract description 73
- 239000007788 liquid Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 25
- 229920002678 cellulose Polymers 0.000 claims abstract description 21
- 239000001913 cellulose Substances 0.000 claims abstract description 21
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 17
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 16
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 claims abstract description 16
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 16
- 239000002270 dispersing agent Substances 0.000 claims abstract description 14
- 229910021485 fumed silica Inorganic materials 0.000 claims abstract description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 30
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 30
- 229910052737 gold Inorganic materials 0.000 claims description 30
- 239000010931 gold Substances 0.000 claims description 30
- 229910052709 silver Inorganic materials 0.000 claims description 30
- 239000004332 silver Substances 0.000 claims description 30
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 229920001046 Nanocellulose Polymers 0.000 claims description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 9
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 9
- 239000008234 soft water Substances 0.000 claims description 7
- 239000002202 Polyethylene glycol Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 229920001223 polyethylene glycol Polymers 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 229920001228 polyisocyanate Polymers 0.000 claims description 5
- 239000005056 polyisocyanate Substances 0.000 claims description 5
- 229920005862 polyol Polymers 0.000 claims description 5
- 150000003077 polyols Chemical class 0.000 claims description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 4
- 239000005977 Ethylene Substances 0.000 claims description 4
- 229920001661 Chitosan Polymers 0.000 claims description 3
- CNCOEDDPFOAUMB-UHFFFAOYSA-N N-Methylolacrylamide Chemical group OCNC(=O)C=C CNCOEDDPFOAUMB-UHFFFAOYSA-N 0.000 claims description 3
- 229920002873 Polyethylenimine Polymers 0.000 claims description 3
- 230000001580 bacterial effect Effects 0.000 claims description 3
- ACCCMOQWYVYDOT-UHFFFAOYSA-N hexane-1,1-diol Chemical compound CCCCCC(O)O ACCCMOQWYVYDOT-UHFFFAOYSA-N 0.000 claims description 3
- 239000002159 nanocrystal Substances 0.000 claims description 3
- 239000002121 nanofiber Substances 0.000 claims description 3
- 229920000371 poly(diallyldimethylammonium chloride) polymer Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000004132 cross linking Methods 0.000 abstract description 4
- CCJAYIGMMRQRAO-UHFFFAOYSA-N 2-[4-[(2-hydroxyphenyl)methylideneamino]butyliminomethyl]phenol Chemical compound OC1=CC=CC=C1C=NCCCCN=CC1=CC=CC=C1O CCJAYIGMMRQRAO-UHFFFAOYSA-N 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 abstract 1
- 239000011111 cardboard Substances 0.000 description 16
- 239000000123 paper Substances 0.000 description 16
- 238000003756 stirring Methods 0.000 description 15
- 239000002245 particle Substances 0.000 description 9
- 238000001035 drying Methods 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000011247 coating layer Substances 0.000 description 5
- PQTCMBYFWMFIGM-UHFFFAOYSA-N gold silver Chemical compound [Ag].[Au] PQTCMBYFWMFIGM-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- XOFYZVNMUHMLCC-ZPOLXVRWSA-N prednisone Chemical compound O=C1C=C[C@]2(C)[C@H]3C(=O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 XOFYZVNMUHMLCC-ZPOLXVRWSA-N 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 125000004029 hydroxymethyl group Chemical group [H]OC([H])([H])* 0.000 description 4
- 239000011087 paperboard Substances 0.000 description 4
- 235000000177 Indigofera tinctoria Nutrition 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 229940097275 indigo Drugs 0.000 description 3
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000003851 corona treatment Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000007774 anilox coating Methods 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- -1 polyvinylamine Polymers 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000005476 size effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- 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
- C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
- C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D123/04—Homopolymers or copolymers of ethene
- C09D123/08—Copolymers of ethene
- C09D123/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C09D123/0869—Acids or derivatives thereof
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/12—Coatings without pigments applied as a solution using water as the only solvent, e.g. in the presence of acid or alkaline compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention provides an aqueous coating liquid, which comprises the following components in 100 parts by weight: 15-35 parts of ethylene-acrylic acid copolymer, 15-30 parts of polyurethane resin, 5-15 parts of cross-linking agent, 2-5 parts of silicon dioxide, 0.01-0.06 part of nano-cellulose and 3-6 parts of dispersing agent. The application also provides a preparation method and application of the aqueous coating liquid. The technical innovation point of the invention is that the nano-cellulose is applied to disperse fumed silica, so that the silica obtains good dispersion effect, and finally, the printed image is full and bright in color and good in color reducibility, and further, the introduction of the cross-linking agent N-hydroxymethyl acrylamide accelerates the cross-linking speed, thereby solving the problem that the surface and the inside of the ink are not dry easily when the ink is dried.
Description
Technical Field
The invention relates to the technical field of printing, in particular to an aqueous coating liquid, a preparation method and application thereof.
Background
The general gold and silver card paper on the market is applied to a digital printing process, and the following defects can occur when the printing of HP ElectroInk is directly carried out: 1) the digital printing ink or the printing ink can not be dried in time, and the problem of dry surface and dry interior is caused; 2) the digital printing ink or printing ink is on the surface of the gold and silver card paper, and the wetting function is weak, so that local spots are caused; 3) the gold and silver card paper is a non-absorbent printing stock, so that the digital printing ink or the printing ink stays on the surface of the gold and silver card to form serious flow marks, thereby influencing the printing appearance.
Disclosure of Invention
The invention solves the technical problem of providing the aqueous coating liquid for the gold and silver cardboard, and the aqueous coating liquid provided by the application is applied to the surface of the gold and silver cardboard, so that the appearance of the gold and silver cardboard has better leveling property and stronger adhesion.
In view of the above, the present application provides an aqueous coating solution comprising, based on 100 parts by weight:
preferably, the ethylene-acrylic acid copolymer is obtained by copolymerizing 45-85 wt% of ethylene and 20-45 wt% of acrylic acid.
Preferably, the polyurethane resin is prepared from organic polyisocyanate and oligomeric polyol, wherein the organic polyisocyanate is selected from one or more of TDI, MDI and PAPI; the oligomeric polyol is selected from one or more of polyethylene glycol with the molecular weight of 800-1000, ethylene glycol, hexanediol and glycerol.
Preferably, the cross-linking agent is selected from N-methylolacrylamide and the silica is selected from fumed silica.
Preferably, the nanocellulose is selected from one or more of cellulose nanofibers, cellulose nanocrystals and bacterial nanocellulose; the dispersing agent is selected from polyethylene glycol with the molecular weight of 1000-1500; the color fixing agent is selected from one or more of polydiallyl dimethyl ammonium chloride, polyethyleneimine, polyvinylamine and chitosan.
Preferably, the content of the silica is 2 to 3 parts by weight.
Preferably, the content of the nano-cellulose is 0.02-0.05 weight part.
The application also provides a preparation method of the aqueous coating liquid, which comprises the following steps:
mixing the ethylene-acrylic acid copolymer, the polyurethane resin and the soft water according to the proportion, heating, adding the cross-linking agent, adding the silicon dioxide, the nano-cellulose and the dispersing agent, and standing to obtain the aqueous coating liquid.
Preferably, the solid content of the aqueous coating liquid is 10-20%, and the viscosity is 15-25 s.
The application also provides a gold and silver paperboard which is composed of base paper of the gold and silver paperboard and aqueous coating liquid coated on the surface of the base paper of the gold and silver paperboard; the aqueous coating liquid is the aqueous coating liquid or the aqueous coating liquid prepared by the preparation method.
The application provides an aqueous coating liquid for gold and silver cardboard, which comprises an ethylene-acrylic acid copolymer, polyurethane resin, a cross-linking agent, silicon dioxide, nanocellulose, a dispersing agent, a color fixing agent and soft water; in the components, with the addition of the nano-cellulose, the smaller the dispersed particle size of the silicon dioxide in the solution is, the smaller the particle size of the silicon dioxide particles fills up the pores between the fibers, so that the roughness of the surface of the base material is reduced, the leveling property of the aqueous coating liquid is utilized to uniformly fill the silicon dioxide particles in the larger pores on the surface of the paper to form a large number of capillaries, so that the aqueous coating liquid is tightly arranged and the surface is smooth, meanwhile, the printing ink can be more fixed on the surface of the coating, the ink absorption speed is accelerated, the color density value is improved, and further, the color of the printed image is fuller and more bright, and the color reducibility; furthermore, the crosslinking agent is N-hydroxymethyl acrylamide, double bonds conjugated with carbonyl groups and hydroxymethyl rich in reactivity are arranged in molecules, and due to the introduction of the hydroxymethyl with a condensation function, the crosslinking of the ethylene-acrylic acid copolymer and the polyurethane resin is promoted, so that the emulsion can be rapidly crosslinked in the drying process, the effect of simultaneous drying of the surface and the inside is achieved, and the problem that the surface and the inside are not dried easily when the existing ink is dried is solved.
Detailed Description
For a further understanding of the invention, reference will now be made to the preferred embodiments of the invention by way of example, and it is to be understood that the description is intended to further illustrate features and advantages of the invention, and not to limit the scope of the claims.
In view of the problem that the surface of the gold-silver card paper is dry, spots are uniformly distributed and flow marks easily appear in the prior art, the application provides a digital printing water-based coating liquid applied to the gold-silver card paper, the water-based coating is pre-coated on the surface of the gold-silver card paper before digital printing, the local spots or serious flow marks are prevented from being formed on the surface of the digital printing ink by enhancing the wetting and leveling function, the appearance presents better leveling property, and the strong adhesion of the digital printing ink on the surface of the gold-silver card paper is effectively ensured. Specifically, the embodiment of the invention discloses an aqueous coating liquid for gold and silver cardboard, which comprises the following components in 100 parts by weight:
in the aqueous coating liquid provided herein, the ethylene-acrylic acid copolymer is a main component of the aqueous coating liquid, which mainly provides adhesion between the coating layer of the coating liquid and the ink, within which the adhesion between the coating layer and the ink is stronger, resulting in better printing appearance. The ethylene-acrylic acid copolymer is obtained by copolymerizing 45-85 wt% of ethylene and 20-45 wt% of acrylic acid, and particularly is resin obtained by copolymerizing an ethylene monomer and an acrylic acid monomer in a high-pressure reaction kettle by utilizing free radical polymerization reaction. The ethylene-acrylic acid copolymer is contained in an amount of 15 to 35 parts by weight, more specifically 18 to 32 parts by weight, and more specifically 20 parts by weight, 22 parts by weight, 25 parts by weight, 28 parts by weight, or 30 parts by weight.
The polyurethane resin is also a main component of the aqueous coating liquid and is used for providing the adhesion between the gold-silver cardboard base material and the coating layer, so that the coating layer is firmly attached to the base material, and the higher the content of the polyurethane resin is, the stronger the adhesion between the base material and the coating layer is, and the stronger the adhesion of the whole base material after printing is. The polyurethane resin is obtained by reacting organic polyisocyanate and oligomeric polyol, and specifically, the organic polyisocyanate is selected from one or more of TDI, MDI and PAPI; the oligomeric polyol is one or more of polyethylene glycol, ethylene glycol, hexanediol and glycerol with the molecular weight of 800-1000. The content of the polyurethane resin is 15-30 parts by weight, specifically 18-28 parts by weight, more specifically 20 parts by weight, 23 parts by weight, 25 parts by weight or 28 parts by weight.
The crosslinking agent molecule has double bonds conjugated with carbonyl and hydroxymethyl with high reactivity, and due to the introduction of the hydroxymethyl with a condensation function, the crosslinking of the ethylene-acrylic acid copolymer and the polyurethane resin is promoted, so that the ethylene-acrylic acid copolymer and the polyurethane resin can be rapidly crosslinked in the drying process of the aqueous coating liquid, and the effect of simultaneous surface and inside drying is achieved. The content of the cross-linking agent is 5-15 parts by weight, specifically 8-12 parts by weight, more specifically 9 parts by weight, 10 parts by weight or 12 parts by weight. The cross-linking agent has good cross-linking effect in the range and high drying speed. In the present application, the crosslinking agent is chosen in particular from N-methylolacrylamide.
Silica and nanocellulose play a role together, supplement each other, realize that aqueous coating liquid arranges closely, and the surfacing, printing ink can be by more the setting on the coating surface simultaneously, impels the blotting speed to accelerate, improves colour density value, and then makes the color and luster of the image of printing more full bright-colored, and the color reducibility is better. The silicon dioxide is selected from fumed silica, and has the advantages of small particle size, high purity, good dispersibility and the like, and meanwhile, the silicon dioxide can form a microporous structure on the surface of paper, so that the migration of ink to the X direction and the Y direction can be inhibited, and the effects of fixing the ink and quickly drying can be achieved. The content of the silica is 2 to 5 parts by weight, and more specifically, the content of the silica is 2 parts by weight, 3 parts by weight, 4 parts by weight or 5 parts by weight. The nano-cellulose is selected from one or more of cellulose nano-fiber, cellulose nano-crystal and bacterial nano-cellulose. The content of the nanocellulose is 0.01 to 0.06 parts by weight, and more specifically, the content of the nanocellulose is 0.01 parts by weight, 0.02 parts by weight, 0.03 parts by weight, 0.04 parts by weight, 0.05 parts by weight, or 0.06 parts by weight. The nano-cellulose reacts with the silicon dioxide, so that the particle size of silicon dioxide particles is reduced, the porosity is reduced, the particle size of the particles in the solution is reduced, the surface is smooth, the light reflection is more, and the nano-cellulose has a small size effect, so that the printed gold and silver card paper is full in color under the combined action of the nano-cellulose and the silicon dioxide.
The dispersant enables the components in the aqueous coating liquid to be uniformly dispersed, and the stability of the emulsion is improved. The dispersing agent is selected from polyethylene glycol with the molecular weight of 1000-1500. The content of the dispersing agent is 3-6 parts by weight, and specifically, the content of the dispersing agent is 3 parts by weight, 4 parts by weight, 5 parts by weight or 6 parts by weight.
The fixing agent is used for enhancing the color in the whole printing process and the colorability of the ink; the cationic property of the color fixing agent is beneficial to combining the anionic dye in the ink to the surface of the coating, the color fixing agent improves the optical density of the coating while fixing the ink, and the color printing effect is excellent. In the present application, the fixing agent is selected from one or more of polydiallyldimethylammonium chloride, polyethyleneimine, polyvinylamine, and chitosan. The content of the color fixing agent is 0.5-1.5 parts by weight, specifically, the content of the color fixing agent is 0.8-1.2 parts by weight, and more specifically, the content of the color fixing agent is 0.9 parts by weight, 1.0 parts by weight, 1.1 parts by weight or 1.2 parts by weight.
The application also provides a preparation method of the aqueous coating liquid, which comprises the following steps:
mixing the ethylene-acrylic acid copolymer, the polyurethane resin and the soft water according to the proportion, heating, adding the cross-linking agent, adding the silicon dioxide, the nano-cellulose and the dispersing agent, and standing to obtain the aqueous coating liquid.
The solid content of the aqueous coating liquid is 10-20%, and the viscosity is 15-25 s.
The invention also provides gold and silver cardboard which consists of the raw paper of the gold and silver cardboard and the aqueous coating liquid coated on the surface of the raw paper of the gold and silver cardboard.
According to the invention, specifically, an anilox roller is adopted to coat the water-based coating liquid on the surface of the gold and silver cardboard, the raw paper of the gold and silver cardboard is subjected to corona treatment before coating, so that the dyne value of the surface of the gold and silver cardboard is 38dyne/cm, and low-temperature plasma is formed in a corona discharge area, so that the close macromolecules of the surface structure of the gold and silver cardboard are changed into smaller molecules, the surface wettability after activation is greatly improved, the gold and silver cardboard is more easily combined with a water-based coating, and the adhesion strength of the water-based coating can be improved. The coating weight dry weight of the aqueous coating liquid on the surface of the gold and silver paperboard base paper is 0.5-3 g/m2。
For further understanding of the present invention, the following examples are given to illustrate the aqueous coating solution and its application of the present invention, and the scope of the present invention is not limited by the following examples.
In the following examples, the gold and silver cardboard was subjected to corona treatment before coating, so that the dyne value of the surface of the gold and silver cardboard was 38 dyne/cm.
Example 1
Mixing 18 parts of ethylene-acrylic acid copolymer, 15 parts of polyurethane resin and 60 parts of soft water, starting heating and stirring, stirring at 70 ℃ at 100r/min while adding 5 parts of cross-linking agent, continuously stirring for 5min, cooling to normal temperature, sequentially adding 2 parts of silicon dioxide, 0.01 part of nano-cellulose and 3 parts of dispersing agent at normal temperature, continuously stirring for 20min, standing for 24h, adding 0.5 part of color fixing agent under stirring to obtain an aqueous coating liquid, wherein the solid content of the aqueous coating liquid is 10%, the viscosity is 18s, coating the aqueous coating liquid on gold and silver card paper by using a 120-mesh screen roller, and the dry coating weight is 0.5g/m2The sample is obtained after HP Indigo printing, the printing appearance is good, the color is uniform, and the adhesive force reaches the standard GB/T521Grade 1 from 0 to 1985, with a color difference Δ E of 0.42.
Example 2
Mixing 20 parts of ethylene-acrylic acid copolymer, 25 parts of polyurethane resin and 65 parts of soft water, starting heating and stirring, adding 10 parts of cross-linking agent while stirring at 70 ℃ at 100r/min, continuously stirring for 5min, cooling to normal temperature, sequentially adding 4 parts of silicon dioxide, 0.04 part of nano-cellulose and 5 parts of dispersing agent at normal temperature, continuously stirring for 20min, standing for 24h, adding 1 part of color fixing agent while stirring to obtain an aqueous coating liquid, wherein the solid content of the aqueous coating liquid is 20%, the viscosity is 23s, coating the aqueous coating liquid on gold and silver card paper by using a 120-mesh screen roller, and the dry coating weight is 2g/m2And the sample is obtained after HP Indigo printing, the printed appearance is full in color, the adhesive force reaches 0 level of standard GB/T5210-1985, and the color difference value delta E is 0.38.
Example 3
Mixing 35 parts of ethylene-acrylic acid copolymer, 30 parts of polyurethane resin and 85 parts of soft water, starting heating and stirring, stirring at 70 ℃ at 100r/min while adding 15 parts of cross-linking agent, continuously stirring for 5min, cooling to normal temperature, sequentially adding 5 parts of silicon dioxide, 0.06 part of nano-cellulose and 6 parts of dispersing agent at normal temperature, continuously stirring for 20min, standing for 24h, adding 1.5 parts of color fixing agent under stirring to obtain an aqueous coating liquid, wherein the solid content of the aqueous coating liquid is 17%, the viscosity is 22s, coating the aqueous coating liquid on gold and silver card paper by using a 120-mesh screen roller, and the dry coating weight is 1.7g/m2And the sample is obtained after HP Indigo printing, the printed appearance is full in color, the adhesive force reaches 1 level of the standard GB/T5210-1985, and the color difference value delta E is 0.25.
Comparative example 1
The same preparation as in example 2, except that no nanocellulose was added. The experimental result shows that the adhesive force is 2 grades, and the color difference value delta E is 2.0.
Comparative example 2
The same procedure as in example 2 was followed, except that no silica was added. The experimental result shows that the adhesive force is 2 grades, and the color difference value delta E is 3.2.
The above description of the embodiments is only intended to facilitate the understanding of the method of the invention and its core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An aqueous coating liquid comprising, based on 100 parts by weight:
2. the aqueous coating solution as claimed in claim 1, wherein the ethylene-acrylic acid copolymer is obtained by copolymerizing 45 to 85 wt% of ethylene and 20 to 45 wt% of acrylic acid.
3. The aqueous coating solution according to claim 1, wherein the polyurethane resin is prepared from an organic polyisocyanate selected from one or more of TDI, MDI and PAPI; the oligomeric polyol is selected from one or more of polyethylene glycol with the molecular weight of 800-1000, ethylene glycol, hexanediol and glycerol.
4. The aqueous coating solution as claimed in claim 1, wherein the crosslinking agent is selected from N-methylolacrylamide and the silica is selected from fumed silica.
5. The aqueous coating solution according to claim 1, wherein the nanocellulose is selected from one or more of cellulose nanofibers, cellulose nanocrystals and bacterial nanocellulose; the dispersing agent is selected from polyethylene glycol with the molecular weight of 1000-1500; the color fixing agent is selected from one or more of polydiallyl dimethyl ammonium chloride, polyethyleneimine, polyvinylamine and chitosan.
6. The aqueous coating solution according to claim 1, wherein the silica is contained in an amount of 2 to 3 parts by weight.
7. The aqueous coating solution according to claim 1, wherein the nanocellulose is contained in an amount of 0.02 to 0.05 parts by weight.
8. The method for preparing an aqueous coating solution according to claim 1, comprising the steps of:
mixing the ethylene-acrylic acid copolymer, the polyurethane resin and the soft water according to the proportion, heating, adding the cross-linking agent, adding the silicon dioxide, the nano-cellulose and the dispersing agent, and standing to obtain the aqueous coating liquid.
9. The method according to claim 8, wherein the aqueous coating liquid has a solid content of 10 to 20% and a viscosity of 15 to 25 seconds.
10. A gold and silver card paper is composed of a gold and silver card paper base paper and an aqueous coating liquid coated on the surface of the gold and silver card paper base paper; the aqueous coating liquid is the aqueous coating liquid according to any one of claims 1 to 7 or the aqueous coating liquid prepared by the preparation method according to any one of claims 8 to 9.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105026503A (en) * | 2012-12-28 | 2015-11-04 | 艾利丹尼森公司 | Topcoat compositions, coated substrates, and related methods |
| US20170341449A1 (en) * | 2016-05-27 | 2017-11-30 | Neenah Paper, Inc. | Solvent resistant glossy printable substrates and their methods of manufacture and use |
| US20180320018A1 (en) * | 2013-12-13 | 2018-11-08 | Linwood G. Koger | Water Based Printable Coatings |
| CN112239555A (en) * | 2020-09-21 | 2021-01-19 | 深圳市光科全息技术有限公司 | Film for three-dimensional printing and preparation method thereof |
-
2021
- 2021-05-06 CN CN202110490036.2A patent/CN113072844A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105026503A (en) * | 2012-12-28 | 2015-11-04 | 艾利丹尼森公司 | Topcoat compositions, coated substrates, and related methods |
| US20180320018A1 (en) * | 2013-12-13 | 2018-11-08 | Linwood G. Koger | Water Based Printable Coatings |
| US20170341449A1 (en) * | 2016-05-27 | 2017-11-30 | Neenah Paper, Inc. | Solvent resistant glossy printable substrates and their methods of manufacture and use |
| CN112239555A (en) * | 2020-09-21 | 2021-01-19 | 深圳市光科全息技术有限公司 | Film for three-dimensional printing and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 李国华: "《建筑材料》", 30 September 2013, 中国建材工业出版社 * |
| 李杰华: "彩色打印图纸功能涂料制备及涂层结构的研究", 《中国优秀博硕士学位论文全文数据库（硕士） 工程科技Ⅰ辑》 * |
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