CN117186690A - Preparation method of water-based ink for flexible package - Google Patents
Preparation method of water-based ink for flexible package Download PDFInfo
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- CN117186690A CN117186690A CN202311139396.3A CN202311139396A CN117186690A CN 117186690 A CN117186690 A CN 117186690A CN 202311139396 A CN202311139396 A CN 202311139396A CN 117186690 A CN117186690 A CN 117186690A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 90
- 238000002360 preparation method Methods 0.000 title claims abstract description 31
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 56
- QILXPCHTWXAUHE-UHFFFAOYSA-N [Na].NCCN Chemical compound [Na].NCCN QILXPCHTWXAUHE-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000009459 flexible packaging Methods 0.000 claims abstract description 20
- 239000000049 pigment Substances 0.000 claims abstract description 18
- 239000002562 thickening agent Substances 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 239000013530 defoamer Substances 0.000 claims abstract description 13
- 239000008367 deionised water Substances 0.000 claims abstract description 13
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 13
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 claims abstract description 13
- QKZIVVMOMKTVIK-UHFFFAOYSA-M anilinomethanesulfonate Chemical compound [O-]S(=O)(=O)CNC1=CC=CC=C1 QKZIVVMOMKTVIK-UHFFFAOYSA-M 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims description 46
- 239000007788 liquid Substances 0.000 claims description 45
- 239000000243 solution Substances 0.000 claims description 28
- 238000002156 mixing Methods 0.000 claims description 26
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 19
- 239000000047 product Substances 0.000 claims description 15
- 238000000227 grinding Methods 0.000 claims description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 10
- 238000001704 evaporation Methods 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 10
- 229920006217 cellulose acetate butyrate Polymers 0.000 claims description 8
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 8
- KNKRKFALVUDBJE-UHFFFAOYSA-N 1,2-dichloropropane Chemical compound CC(Cl)CCl KNKRKFALVUDBJE-UHFFFAOYSA-N 0.000 claims description 5
- JDQDSEVNMTYMOC-UHFFFAOYSA-N 3-methylbenzenesulfonic acid Chemical compound CC1=CC=CC(S(O)(=O)=O)=C1 JDQDSEVNMTYMOC-UHFFFAOYSA-N 0.000 claims description 5
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 5
- CNCOEDDPFOAUMB-UHFFFAOYSA-N N-Methylolacrylamide Chemical compound OCNC(=O)C=C CNCOEDDPFOAUMB-UHFFFAOYSA-N 0.000 claims description 5
- 239000004115 Sodium Silicate Substances 0.000 claims description 5
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 5
- 230000032683 aging Effects 0.000 claims description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 5
- 239000002518 antifoaming agent Substances 0.000 claims description 5
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 5
- 239000000706 filtrate Substances 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 4
- 235000010413 sodium alginate Nutrition 0.000 claims description 4
- 239000000661 sodium alginate Substances 0.000 claims description 4
- 229940005550 sodium alginate Drugs 0.000 claims description 4
- 229920001661 Chitosan Polymers 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 3
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 229920001451 polypropylene glycol Polymers 0.000 claims description 3
- OSNILPMOSNGHLC-UHFFFAOYSA-N 1-[4-methoxy-3-(piperidin-1-ylmethyl)phenyl]ethanone Chemical compound COC1=CC=C(C(C)=O)C=C1CN1CCCCC1 OSNILPMOSNGHLC-UHFFFAOYSA-N 0.000 claims description 2
- 239000006229 carbon black Substances 0.000 claims description 2
- 238000004108 freeze drying Methods 0.000 claims description 2
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 18
- 238000004806 packaging method and process Methods 0.000 abstract description 6
- 230000002708 enhancing effect Effects 0.000 abstract description 4
- 239000000976 ink Substances 0.000 description 63
- 230000000052 comparative effect Effects 0.000 description 20
- 238000012360 testing method Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 229920000298 Cellophane Polymers 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
Landscapes
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The invention relates to the technical field of water-based ink, in particular to a preparation method of water-based ink for flexible packaging; the water-based ink is prepared from the following raw materials in parts by weight: 50 to 60 parts of water-based epoxy acrylate, 8 to 12 parts of functional auxiliary agent, 5 to 7 parts of auxiliary agent, 10 to 14 parts of sodium ethylenediamine sulfonate, 3 to 5 parts of defoamer, 5 to 8 parts of thickener, 6 to 8 parts of pigment and 25 to 35 parts of deionized water; the water-based ink prepared by the invention not only can effectively reduce friction coefficient and improve gloss, but also has the function of enhancing adhesion strength, and meets the requirements on food packaging and other packaging.
Description
Technical Field
The invention relates to the technical field of water-based ink, in particular to a preparation method of water-based ink for flexible packaging.
Background
Flexible packages are widely used for the outer packaging of goods due to a number of advantageous properties, and the true reproduction of colors increases the purchasing desire of consumers. The common soft packaging materials mainly comprise paper, plastic film, cellophane, composite film, vacuum degree aluminum film and the like.
The ink is used as a printing material for food packaging, and the environmental protection performance requirement of the ink is gradually improved. The existing flexible package water-based ink on the market has the problems of poor gloss and weak adhesive strength, and influences the use experience.
Therefore, the invention provides a preparation method of water-based ink for flexible packaging, which is used for solving the related technical problems.
Disclosure of Invention
The invention aims to provide a preparation method of water-based ink for flexible packages, which not only can effectively reduce friction coefficient and improve gloss, but also has the function of enhancing adhesion strength, and meets the requirements on food packages and other packages.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the invention provides a preparation method of water-based ink for flexible packaging, which is prepared from the following raw materials in parts by weight: 50 to 60 parts of water-based epoxy acrylate, 8 to 12 parts of functional auxiliary agent, 5 to 7 parts of auxiliary agent, 10 to 14 parts of sodium ethylenediamine sulfonate, 3 to 5 parts of defoamer, 5 to 8 parts of thickener, 6 to 8 parts of pigment and 25 to 35 parts of deionized water;
the preparation method of the water-based ink for the flexible package comprises the following steps:
accurately weighing aqueous epoxy acrylate, ethylenediamine sodium sulfonate, pigment and deionized water, and uniformly stirring and mixing to obtain a solution A;
II, grinding the solution A in a grinder until the granularity is 100-120 mu m to obtain a solution B;
and III, adding a functional auxiliary agent, an auxiliary agent, sodium ethylenediamine sulfonate, a defoaming agent and a thickening agent into the solution B, and uniformly stirring and mixing to obtain the water-based ink.
The invention is further provided with: the preparation method of the functional auxiliary agent comprises the following steps:
putting proper amount of nano titanium dioxide into proper amount of 70% ethanol water solution according to solid-liquid ratio of 0.02-0.03 g/mL, and mixing for 60-70 min at 70-72 ℃ under 340-360 r/min to obtain slurry;
and then according to 6-8: 1, adding proper amount of wrapping liquid into the slurry in a dropwise manner, controlling the pH value to 9-10 by dilute sulfuric acid, aging for 90-120 min, centrifuging, washing, drying and grinding the aged product to obtain the functional auxiliary agent.
The invention is further provided with: the wrapping liquid is prepared by mixing sodium silicate, tetraethoxysilane and ammonia water according to the solid-liquid ratio of 0.06-0.08:0.12-0.16:1 g/mL.
The invention is further provided with: the preparation method of the auxiliary agent comprises the following steps:
placing a proper amount of cellulose acetate butyrate into a proper amount of propylene chloride according to a solid-to-liquid ratio of 0.01-0.02 g/mL, and stirring for 20-30 min at a temperature of 30-32 ℃ and a speed of 80-82 r/min to obtain a mixed solution;
according to the weight ratio of 0.3-0.6: 1, placing the compound liquid into the mixed liquid according to the volume ratio, treating for 40-60 min at 60-70 ℃, evaporating the filtrate, and then deionizing and washing the evaporation product for 4-5 times;
freeze drying the washed product, and crushing to 100-200 mesh to obtain auxiliary agent.
The invention is further provided with: the compound liquid is prepared by mixing m-toluenesulfonic acid and N, N-2 methylol acrylamide according to the solid-liquid ratio of 0.4-0.6:1 g/mL.
The invention is further provided with: the defoamer is selected from any one of polyethylene glycol, polyethylene oxide alcohol and polypropylene glycol.
The invention is further provided with: the thickening agent is any one of sodium alginate and chitosan.
The invention is further provided with: the pigment is one or a mixture of more of phthalocyanine blue, phthalocyanine green, permanent red, benzidine yellow and carbon black.
The invention is further provided with: the stirring speed in the step I is 360-380 r/min, the stirring temperature is 50-60 ℃, and the stirring time is 30-40 min.
The invention is further provided with: the stirring speed in the step III is 680-720 r/min, the stirring temperature is 30-40 ℃, and the stirring time is 60-70 min.
Compared with the prior art, the invention has the beneficial effects that:
the preparation method of the water-based ink for the flexible package provided by the invention takes water-based epoxy acrylate, functional auxiliary agent, auxiliary agent, sodium ethylenediamine sulfonate, defoamer, thickener, pigment, deionized water and the like as raw materials, the water-based epoxy acrylate, the sodium ethylenediamine sulfonate, the pigment and the deionized water are stirred and mixed uniformly, then the mixture is put into a grinder for grinding, and then the functional auxiliary agent, the auxiliary agent, the sodium ethylenediamine sulfonate, the defoamer and the thickener are added for stirring and mixing uniformly, so that the water-based ink is obtained; the prepared water-based ink not only can effectively reduce friction coefficient and improve gloss, but also has the function of enhancing adhesion strength, and meets the requirements on food packaging and other packaging; the water-based ink prepared by the invention has wider market prospect and is more suitable for popularization.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a statistical plot of gloss of the present invention;
FIG. 2 is a statistical plot of the attachment fastness of the present invention;
FIG. 3 is a statistical graph of peel force of the present invention.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The embodiment provides a preparation method of water-based ink for flexible packaging, which is prepared from the following raw materials in parts by weight: 50 parts of aqueous epoxy acrylate, 8 parts of functional auxiliary agents, 5 parts of auxiliary agents, 10 parts of sodium ethylenediamine sulfonate, 3 parts of defoamer, 5 parts of thickener, 6 parts of pigment and 25 parts of deionized water.
The preparation method of the functional auxiliary agent comprises the following steps:
putting a proper amount of nano titanium dioxide into a proper amount of 70% ethanol water solution according to a solid-liquid ratio of 0.02g/mL, and mixing for 60min at 70 ℃ under the condition of 340r/min to obtain slurry;
and then according to 6:1, adding proper amount of wrapping liquid into the slurry in a dropwise manner, controlling the pH value to 9 by dilute sulfuric acid, aging for 90min, centrifuging, washing, drying and grinding the aged product to obtain the functional auxiliary agent.
Further, the wrapping liquid is prepared by mixing sodium silicate, tetraethoxysilane and ammonia water according to the solid-liquid ratio of 0.06:0.12:1 g/mL.
In addition, the preparation method of the auxiliary agent comprises the following steps:
placing a proper amount of cellulose acetate butyrate into a proper amount of propylene chloride according to a solid-to-liquid ratio of 0.01g/mL, and stirring for 20min at 30 ℃ under the condition of 80r/min to obtain a mixed solution;
according to 0.3:1, placing the compound liquid into the mixed liquid according to the volume ratio, treating for 40min at 60 ℃, evaporating the filtrate, and deionizing and washing the evaporation product for 4 times;
the washed product is freeze-dried and then crushed to 100 meshes, and the auxiliary agent is obtained.
Wherein the compound liquid is prepared by mixing m-toluenesulfonic acid and N, N-2 methylol acrylamide according to the solid-liquid ratio of 0.4:1 g/mL.
The defoamer is polyethylene glycol.
The invention is further provided with: the thickening agent is sodium alginate.
The pigment is phthalocyanine blue.
The preparation method of the water-based ink for the flexible package comprises the following steps:
and I, accurately weighing the aqueous epoxy acrylate, the ethylenediamine sodium sulfonate, the pigment and the deionized water, and uniformly stirring and mixing to obtain a solution A.
Wherein the stirring speed is 360r/min, the stirring temperature is 50 ℃, and the stirring time is 30min.
And II, grinding the solution A in a grinder until the granularity is 100 mu m, and obtaining a solution B.
And III, adding a functional auxiliary agent, an auxiliary agent, sodium ethylenediamine sulfonate, a defoaming agent and a thickening agent into the solution B, and uniformly stirring and mixing to obtain the water-based ink.
Wherein the stirring speed is 680r/min, the stirring temperature is 30 ℃, and the stirring time is 60min.
Example two
The embodiment provides a preparation method of water-based ink for flexible packaging, which is prepared from the following raw materials in parts by weight: 55 parts of aqueous epoxy acrylate, 10 parts of functional auxiliary agents, 6 parts of auxiliary agents, 12 parts of sodium ethylenediamine sulfonate, 4 parts of defoamer, 6 parts of thickener, 7 parts of pigment and 30 parts of deionized water.
The preparation method of the functional auxiliary agent comprises the following steps:
putting a proper amount of nano titanium dioxide into a proper amount of 70% ethanol water solution according to a solid-liquid ratio of 0.03g/mL, and mixing for 65min at 71 ℃ under the condition of 350r/min to obtain slurry;
and then according to 7:1, adding proper amount of wrapping liquid into the slurry in a dropwise manner, controlling the pH value to be 10 by dilute sulfuric acid, aging for 105 minutes, centrifuging, washing, drying and grinding the aged product to obtain the functional auxiliary agent.
Further, the wrapping liquid is prepared by mixing sodium silicate, tetraethoxysilane and ammonia water according to the solid-liquid ratio of 0.07:0.14:1 g/mL.
In addition, the preparation method of the auxiliary agent comprises the following steps:
placing a proper amount of cellulose acetate butyrate into a proper amount of propylene chloride according to a solid-to-liquid ratio of 0.02g/mL, and stirring for 25min at 31 ℃ under the condition of 81r/min to obtain a mixed solution;
according to 0.4:1, placing the compound liquid into the mixed liquid according to the volume ratio, treating for 50min at the temperature of 5 ℃, evaporating filtrate, and then deionizing and washing the evaporation product for 5 times;
the washed product is freeze-dried and then crushed to 200 meshes, and the auxiliary agent is obtained.
Wherein the compound liquid is prepared by mixing m-toluenesulfonic acid and N, N-2 methylol acrylamide according to the solid-liquid ratio of 0.5:1 g/mL.
The defoamer is polyethylene oxide alcohol.
The invention is further provided with: the thickening agent is chitosan.
The pigment is phthalocyanine blue.
The preparation method of the water-based ink for the flexible package comprises the following steps:
and I, accurately weighing the aqueous epoxy acrylate, the ethylenediamine sodium sulfonate, the pigment and the deionized water, and uniformly stirring and mixing to obtain a solution A.
Wherein the stirring speed is 370r/min, the stirring temperature is 55 ℃, and the stirring time is 35min.
And II, grinding the solution A in a grinder until the granularity is 120 mu m, and obtaining a solution B.
And III, adding a functional auxiliary agent, an auxiliary agent, sodium ethylenediamine sulfonate, a defoaming agent and a thickening agent into the solution B, and uniformly stirring and mixing to obtain the water-based ink.
Wherein the stirring speed is 700r/min, the stirring temperature is 35 ℃, and the stirring time is 65min.
Example III
The embodiment provides a preparation method of water-based ink for flexible packaging, which is prepared from the following raw materials in parts by weight: 60 parts of aqueous epoxy acrylate, 12 parts of functional auxiliary agents, 7 parts of auxiliary agents, 14 parts of sodium ethylenediamine sulfonate, 5 parts of defoamer, 8 parts of thickener, 8 parts of pigment and 35 parts of deionized water.
The preparation method of the functional auxiliary agent comprises the following steps:
putting a proper amount of nano titanium dioxide into a proper amount of 70% ethanol water solution according to a solid-liquid ratio of 0.03g/mL, and mixing for 70min at 72 ℃ under the condition of 360r/min to obtain slurry;
and then 8:1, adding proper amount of wrapping liquid into the slurry in a dropwise manner, controlling the pH value to be 10 by dilute sulfuric acid, aging for 120min, centrifuging, washing, drying and grinding the aged product to obtain the functional auxiliary agent.
Further, the wrapping liquid is prepared by mixing sodium silicate, tetraethoxysilane and ammonia water according to the solid-liquid ratio of 0.08:0.16:1 g/mL.
In addition, the preparation method of the auxiliary agent comprises the following steps:
placing a proper amount of cellulose acetate butyrate into a proper amount of propylene chloride according to a solid-to-liquid ratio of 0.02g/mL, and stirring for 30min at the temperature of 32 ℃ under the condition of 82r/min to obtain a mixed solution;
according to 0.6:1, placing the compound liquid into the mixed liquid according to the volume ratio, treating for 60min at 70 ℃, evaporating the filtrate, and deionizing and washing the evaporation product for 5 times;
the washed product is freeze-dried and then crushed to 200 meshes, and the auxiliary agent is obtained.
Wherein the compound liquid is prepared by mixing m-toluenesulfonic acid and N, N-2 methylol acrylamide according to the solid-liquid ratio of 0.6:1 g/mL.
The defoamer is polypropylene glycol.
The invention is further provided with: the thickening agent is sodium alginate.
The pigment is phthalocyanine blue.
The preparation method of the water-based ink for the flexible package comprises the following steps:
and I, accurately weighing the aqueous epoxy acrylate, the ethylenediamine sodium sulfonate, the pigment and the deionized water, and uniformly stirring and mixing to obtain a solution A.
Wherein the stirring speed is 380r/min, the stirring temperature is 60 ℃, and the stirring time is 40min.
And II, grinding the solution A in a grinder until the granularity is 120 mu m, and obtaining a solution B.
And III, adding a functional auxiliary agent, an auxiliary agent, sodium ethylenediamine sulfonate, a defoaming agent and a thickening agent into the solution B, and uniformly stirring and mixing to obtain the water-based ink.
Wherein the stirring speed is 720r/min, the stirring temperature is 40 ℃, and the stirring time is 70min.
Comparative example one: the preparation method of the water-based ink for flexible packaging, the specific proportion of the raw materials and the first embodiment are approximately the same, and the main differences are that: in the embodiment, the functional auxiliary agent is replaced by nano titanium dioxide.
Comparative example two: the preparation method of the water-based ink for flexible packaging, the specific proportion of the raw materials and the first embodiment are approximately the same, and the main differences are that: in the embodiment, the auxiliary agent is replaced by cellulose acetate butyrate.
Comparative example three: the preparation method of the water-based ink for flexible packaging, the specific proportion of the raw materials and the first embodiment are approximately the same, and the main differences are that: sodium ethylenediamine sulfonate was not included in this example.
Effect testing
The aqueous inks prepared by examples one to three in the present invention were respectively referred to as experimental examples 1 to 3; the aqueous inks prepared by comparative examples one to three were designated as comparative examples 1 to 3; the performance of each set of equal amounts of aqueous ink samples was then separately tested.
Test 1, gloss, abrasion resistance test and result analysis:
carrying out glossiness test on each group of water-based ink according to the detection standard of GB/T13217.2-2009;
performing wear resistance test on each group of water-based ink according to the detection standard of GB/T3960-83;
the relevant data are recorded in table 1.
Table 1: data record table for test
From table 1 and fig. 1, it is understood that the gloss and abrasion resistance of the aqueous inks of examples 1 to 3 are superior to those of the comparative group, and the difference between the respective example groups is not significant. The above results indicate that the aqueous inks of examples 1 to 3 have remarkable effects of reducing friction coefficient and improving gloss function.
To verify the effect of the components of the present additive, tests of comparative examples 1 to 3 were set up.
The main difference between the raw material ratios of the water-based ink of the comparison group 1 and the water-based ink of the example 1 is that the functional auxiliary agent is replaced by nano titanium dioxide. The gloss was found to be reduced by 20Gu and the coefficient of friction was increased by 0.02 in the comparative group 1 as compared to the group 1. The result shows that the functional auxiliary agent plays an important role in improving the glossiness of the water-based ink, and has little influence on the wear resistance of the water-based ink.
The main difference between the raw material ratios of the water-based ink of the comparison group 2 and the water-based ink of the example 1 is that the auxiliary agent is replaced by cellulose acetate butyrate. The gloss was found to be reduced by 20Gu and the coefficient of friction was increased by 0.02 for the comparative group 2 as compared to the example 1 group. The result shows that the auxiliary agent plays an important role in improving and reducing the glossiness of the water-based ink, and has little influence on the wear resistance of the water-based ink.
The main difference between the raw material ratios of the water-based ink of the comparative group 3 and the water-based ink of the example 1 is that the water-based ink does not contain sodium ethylenediamine sulfonate. The gloss was found to be reduced by 3Gu and the coefficient of friction was increased by 0.25 for the comparative group 3 as compared to the group of example 1. The result shows that the sodium ethylenediamine sulfonate has little influence on improving the glossiness of the water-based ink, but has influence on the wear resistance of the water-based ink.
Test 2, adhesion, peel force test and results analysis:
the water-based inks of each group were tested for adhesion and peel strength according to the test standard of GB/T26394-2011, and the relevant data were recorded in Table 2.
Table 2: data record table for test
Group of | Attachment fastness (%) | Stripping force (N/15 mm) |
Example group 1 | 95 | 1.2 |
Example group 2 | 95 | 1.2 |
Example 3 group | 95 | 1.2 |
Comparative group 1 | 75 | 0.4 |
Comparative group 2 | 90 | 1.0 |
Comparative group 3 | 85 | 0.8 |
From table 2 and fig. 2 to 3, it is understood that the adhesion fastness and the peel strength of the aqueous inks of examples 1 to 3 are superior to those of the comparative group, and the difference between the respective example groups is not significant. The above results indicate that the aqueous inks of examples 1 to 3 have a remarkable effect of adhesion strength.
To verify the effect of the components of the present additive, tests of comparative examples 1 to 3 were set up.
The main difference between the raw material ratios of the water-based ink of the comparison group 1 and the water-based ink of the example 1 is that the functional auxiliary agent is replaced by nano titanium dioxide. The adhesion was found to be 20% lower in the comparative group 1 and 0.8N lower in peel force compared to the example 1 group. The result shows that the functional auxiliary agent plays an important role in improving the adhesive strength performance of the water-based ink.
The main difference between the raw material ratios of the water-based ink of the comparison group 2 and the water-based ink of the example 1 is that the auxiliary agent is replaced by cellulose acetate butyrate. It was found that the adhesion was reduced by 5% and the peel force was reduced by 0.2N in the comparative group 2 as compared to the example 1 group. The result shows that the auxiliary agent has an effect on improving the adhesive strength performance of the water-based ink.
The main difference between the raw material ratios of the water-based ink of the comparative group 3 and the water-based ink of the example 1 is that the water-based ink does not contain sodium ethylenediamine sulfonate. It was found that the adhesion was reduced by 10% and the peel force was reduced by 0.4N in the comparative group 3 as compared to the example 1 group. The result shows that the sodium ethylenediamine sulfonate has a certain effect on improving the adhesive strength performance of the water-based ink.
According to the preparation method of the water-based ink for the flexible package, the obtained water-based ink not only can effectively reduce friction coefficient and improve gloss function; but also has the effect of enhancing the adhesive strength. Therefore, the water-based ink prepared by the invention has wider market prospect and is more suitable for popularization.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (10)
1. A preparation method of water-based ink for flexible packaging is characterized by comprising the following steps: the water-based ink is prepared from the following raw materials in parts by weight: 50 to 60 parts of water-based epoxy acrylate, 8 to 12 parts of functional auxiliary agent, 5 to 7 parts of auxiliary agent, 10 to 14 parts of sodium ethylenediamine sulfonate, 3 to 5 parts of defoamer, 5 to 8 parts of thickener, 6 to 8 parts of pigment and 25 to 35 parts of deionized water;
the preparation method of the water-based ink for the flexible package comprises the following steps:
accurately weighing aqueous epoxy acrylate, ethylenediamine sodium sulfonate, pigment and deionized water, and uniformly stirring and mixing to obtain a solution A;
II, grinding the solution A in a grinder until the granularity is 100-120 mu m to obtain a solution B;
and III, adding a functional auxiliary agent, an auxiliary agent, sodium ethylenediamine sulfonate, a defoaming agent and a thickening agent into the solution B, and uniformly stirring and mixing to obtain the water-based ink.
2. The method for preparing the water-based ink for flexible packaging according to claim 1, wherein the method comprises the following steps: the preparation method of the functional auxiliary agent comprises the following steps:
putting proper amount of nano titanium dioxide into proper amount of 70% ethanol water solution according to solid-liquid ratio of 0.02-0.03 g/mL, and mixing for 60-70 min at 70-72 ℃ under 340-360 r/min to obtain slurry;
and then according to 6-8: 1, adding proper amount of wrapping liquid into the slurry in a dropwise manner, controlling the pH value to 9-10 by dilute sulfuric acid, aging for 90-120 min, centrifuging, washing, drying and grinding the aged product to obtain the functional auxiliary agent.
3. The method for preparing the water-based ink for flexible packaging according to claim 2, wherein the method comprises the following steps: the wrapping liquid is prepared by mixing sodium silicate, tetraethoxysilane and ammonia water according to the solid-liquid ratio of 0.06-0.08:0.12-0.16:1 g/mL.
4. The method for preparing the water-based ink for flexible packaging according to claim 1, wherein the method comprises the following steps: the preparation method of the auxiliary agent comprises the following steps:
placing a proper amount of cellulose acetate butyrate into a proper amount of propylene chloride according to a solid-to-liquid ratio of 0.01-0.02 g/mL, and stirring for 20-30 min at a temperature of 30-32 ℃ and a speed of 80-82 r/min to obtain a mixed solution;
according to the weight ratio of 0.3-0.6: 1, placing the compound liquid into the mixed liquid according to the volume ratio, treating for 40-60 min at 60-70 ℃, evaporating the filtrate, and then deionizing and washing the evaporation product for 4-5 times;
freeze drying the washed product, and crushing to 100-200 mesh to obtain auxiliary agent.
5. The method for preparing the water-based ink for flexible packaging according to claim 4, wherein the method comprises the following steps: the compound liquid is prepared by mixing m-toluenesulfonic acid and N, N-2 methylol acrylamide according to the solid-liquid ratio of 0.4-0.6:1 g/mL.
6. The method for preparing the water-based ink for flexible packaging according to claim 1, wherein the method comprises the following steps: the defoamer is selected from any one of polyethylene glycol, polyethylene oxide alcohol and polypropylene glycol.
7. The method for preparing the water-based ink for flexible packaging according to claim 1, wherein the method comprises the following steps: the thickening agent is any one of sodium alginate and chitosan.
8. The method for preparing the water-based ink for flexible packaging according to claim 1, wherein the method comprises the following steps: the pigment is one or a mixture of more of phthalocyanine blue, phthalocyanine green, permanent red, benzidine yellow and carbon black.
9. The method for preparing the water-based ink for flexible packaging according to claim 1, wherein the method comprises the following steps: the stirring speed in the step I is 360-380 r/min, the stirring temperature is 50-60 ℃, and the stirring time is 30-40 min.
10. The method for preparing the water-based ink for flexible packaging according to claim 1, wherein the method comprises the following steps: the stirring speed in the step III is 680-720 r/min, the stirring temperature is 30-40 ℃, and the stirring time is 60-70 min.
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