CN116516699A - Printing adhesive cement and preparation method and application thereof - Google Patents
Printing adhesive cement and preparation method and application thereof Download PDFInfo
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- CN116516699A CN116516699A CN202310405456.5A CN202310405456A CN116516699A CN 116516699 A CN116516699 A CN 116516699A CN 202310405456 A CN202310405456 A CN 202310405456A CN 116516699 A CN116516699 A CN 116516699A
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- printing
- coating
- thickener
- coupling agent
- silane coupling
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- 238000007639 printing Methods 0.000 title claims abstract description 75
- 239000000853 adhesive Substances 0.000 title claims abstract description 48
- 239000004568 cement Substances 0.000 title claims abstract description 35
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000004814 polyurethane Substances 0.000 claims abstract description 42
- 229920002635 polyurethane Polymers 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 33
- 229920000715 Mucilage Polymers 0.000 claims abstract description 24
- 239000002562 thickening agent Substances 0.000 claims description 44
- 239000002270 dispersing agent Substances 0.000 claims description 41
- 239000000839 emulsion Substances 0.000 claims description 27
- -1 titanate modified calcium carbonate Chemical class 0.000 claims description 23
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 22
- 239000006185 dispersion Substances 0.000 claims description 19
- 239000012188 paraffin wax Substances 0.000 claims description 17
- 239000002518 antifoaming agent Substances 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 11
- 239000003513 alkali Substances 0.000 claims description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- WPKYZIPODULRBM-UHFFFAOYSA-N azane;prop-2-enoic acid Chemical compound N.OC(=O)C=C WPKYZIPODULRBM-UHFFFAOYSA-N 0.000 claims description 8
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 claims description 7
- 239000007822 coupling agent Substances 0.000 claims description 7
- 239000003431 cross linking reagent Substances 0.000 claims description 7
- 230000004048 modification Effects 0.000 claims description 7
- 238000012986 modification Methods 0.000 claims description 7
- 229940047670 sodium acrylate Drugs 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 7
- 239000004408 titanium dioxide Substances 0.000 claims description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 239000004753 textile Substances 0.000 claims description 5
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 3
- 241001481833 Coryphaena hippurus Species 0.000 claims description 3
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 3
- 229920000058 polyacrylate Polymers 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract description 40
- 238000000576 coating method Methods 0.000 abstract description 40
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005187 foaming Methods 0.000 abstract description 5
- 238000004132 cross linking Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 229910052710 silicon Inorganic materials 0.000 abstract description 3
- 239000010703 silicon Substances 0.000 abstract description 3
- 239000011159 matrix material Substances 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 description 36
- 239000004744 fabric Substances 0.000 description 13
- 238000012360 testing method Methods 0.000 description 9
- 239000008367 deionised water Substances 0.000 description 7
- 229910021641 deionized water Inorganic materials 0.000 description 7
- 235000010215 titanium dioxide Nutrition 0.000 description 7
- 239000004677 Nylon Substances 0.000 description 6
- 229920002125 Sokalan® Polymers 0.000 description 6
- 239000013530 defoamer Substances 0.000 description 6
- 229920001778 nylon Polymers 0.000 description 6
- 239000004584 polyacrylic acid Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 238000007650 screen-printing Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- 239000002480 mineral oil Substances 0.000 description 4
- 235000010446 mineral oil Nutrition 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 150000003863 ammonium salts Chemical class 0.000 description 3
- 159000000000 sodium salts Chemical class 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229920002334 Spandex Polymers 0.000 description 1
- 229920004933 Terylene® Polymers 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000004759 spandex Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/52—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
- D06P1/5264—Macromolecular compounds obtained otherwise than by reactions involving only unsaturated carbon-to-carbon bonds
- D06P1/5285—Polyurethanes; Polyurea; Polyguanides
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/52—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
- D06P1/5207—Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- D06P1/525—Polymers of unsaturated carboxylic acids or functional derivatives thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
- D06P1/651—Compounds without nitrogen
- D06P1/6515—Hydrocarbons
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/673—Inorganic compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/673—Inorganic compounds
- D06P1/67333—Salts or hydroxides
- D06P1/6735—Salts or hydroxides of alkaline or alkaline-earth metals with anions different from those provided for in D06P1/67341
Abstract
The invention provides printing mucilage and a preparation method and application thereof, and belongs to the technical field of printing. According to the invention, the silane coupling agent modified waterborne polyurethane is used as a film forming material, the stretchability and elasticity of the prepared coating are enhanced due to the self-crosslinking characteristic, the surface tension of the coating is reduced due to the introduction of silicon, and the surface of the coating is not soaked by water, so that the water resistance of the coating is enhanced, and the problem of insufficient adhesive force due to the bridging effect of the silane coupling agent on the coating and a matrix is also improved. The invention enhances the structure of the coating by adjusting the types and the amounts of the components, thereby improving the elasticity, the tensile property and the friction resistance. The results of the examples show that the coating prepared from the printing cement of the application has no shedding and foaming after being washed for 20 times at the temperature of 60 ℃, the elastic elongation is more than 150, the wet wiping is of grade 4, and the hand feeling of the coating is dry and soft.
Description
Technical Field
The invention belongs to the technical field of printing, and particularly relates to printing mucilage and a preparation method and application thereof.
Background
The printing adhesive cement is a chemical coating for textile surface modification and functionalization, and the printing coating is transferred to the textile surface mainly through a screen printing process.
The aqueous polyurethane has the characteristics of high strength, good elasticity, good stretching rebound resilience and soft hand feeling of the formed film, and has a great development prospect in printing mucilage. However, the water-based polyurethane has poor water resistance, insufficient binding power and unsatisfactory friction resistance, and especially the binding power on fabrics such as hydrophobic nylon, terylene, spandex and the like can not meet the requirement.
At present, the property of the aqueous polyurethane is improved by adding a cross-linking agent into printing mucilage in the market generally, but the problems of troublesome operation, exhaustion in a specified time, hand feeling change of a printing coating and the like exist.
Disclosure of Invention
The invention aims to provide a printing adhesive cement, a preparation method and application thereof, wherein an external cross-linking agent is not used in the printing adhesive cement, and a printing coating prepared by using the printing adhesive cement has the advantages of good water resistance, good elasticity, strong binding power, soft and smooth hand feeling and excellent friction resistance.
The invention provides printing adhesive cement which comprises the following components in parts by mass:
the solid content of the silane coupling agent modified waterborne polyurethane emulsion is 40-45 wt%;
the printing mucilage does not contain a cross-linking agent.
Preferably, the silane coupling agent modified aqueous polyurethane emulsion comprises Dolphin 1052r and/or Dolphin1486 r.
Preferably, the filler comprises titanium dioxide and titanate modified calcium carbonate;
the mass ratio of the titanium dioxide to the titanate modified calcium carbonate is 1:0.2-2.5.
Preferably, the preparation method of the titanate modified calcium carbonate comprises the following steps: spraying titanate coupling agent solution onto the preheated calcium carbonate for modification to obtain the titanate modified calcium carbonate.
Preferably, the thickener includes an alkali thickener, a polyurethane thickener, and a PTF thickener.
Preferably, the alkali thickener comprises Dow 8W, the polyurethane thickener comprises ASE-60, and the PTF thickener comprises RheovesAS 1189 and/or Loongrun TS 275.
Preferably, the dispersant includes an ammonium acrylate dispersant and a sodium acrylate dispersant;
the mass ratio of the ammonium acrylate dispersing agent to the sodium acrylate dispersing agent is 0.3-3:1.
Preferably, the ammonium polyacrylate dispersant comprises basf 4141; the sodium polyacrylate dispersant includes nopodiaceae 5040.
The invention also provides a preparation method of the printing adhesive cement, which comprises the following steps: sequentially mixing the silane coupling agent modified aqueous polyurethane emulsion with a dispersing agent and a filler to obtain a dispersion;
and mixing the dispersion liquid with water, a defoaming agent, emulsified paraffin and a thickening agent in sequence to obtain the printing mucilage.
The invention also provides application of the printing mucilage according to the scheme or the printing mucilage prepared by the preparation method according to the scheme in textile printing.
The invention provides printing adhesive cement which comprises the following components in parts by mass: 40-65 parts of silane coupling agent modified waterborne polyurethane emulsion; 15-50 parts of filler; 0.5-5 parts of thickening agent; 1-3 parts of dispersing agent; 0.5-1 part of defoaming agent; 3-5 parts of emulsified paraffin; 5-30 parts of water; the solid content in the silane coupling agent modified waterborne polyurethane emulsion is 40-45 wt%; the printing mucilage does not contain a cross-linking agent. According to the invention, the silane coupling agent modified waterborne polyurethane is used as a film forming material, the stretchability and elasticity of the prepared coating are enhanced due to the self-crosslinking characteristic, the surface tension of the coating is reduced due to the introduction of silicon, and the surface of the coating is not soaked by water, so that the water resistance of the coating is enhanced, and the problem of insufficient adhesive force due to the bridging effect of the silane coupling agent on the coating and a matrix is also improved. The invention enhances the structure of the coating by adjusting the types and the amounts of the components, thereby improving the elasticity, the tensile property and the friction resistance. The results of the examples show that the coating prepared from the printing cement of the application has no shedding and foaming after being washed for 20 times at the temperature of 60 ℃, the elastic elongation is more than 150, the wet wiping is of grade 4, and the hand feeling of the coating is dry and soft.
Furthermore, the invention selects titanate modified calcium carbonate, enhances the compatibility of the titanate modified calcium carbonate and silane coupling agent modified waterborne polyurethane, and improves the coating performance.
Further, the invention selects the combination of the acrylic acid ammonium salt dispersing agent and the acrylic acid sodium salt dispersing agent, and balances the dispersing effect of the filler and the water resistance of the coating.
Furthermore, the multiple thickeners of the invention balance the rheological property of the printing mucilage, so that the prepared coating has good form, and the elasticity, the cohesive force, the water resistance and the friction resistance of the coating are further improved.
In addition, the adhesive cement has good printing effect on nylon cloth, and the printed patterns and various performances meet the requirements. Compared with the scheme of adding the cross-linking agent to enhance and improve the performance of the printing adhesive cement part, the printing adhesive cement has the advantages of simple operation, no need of running out in a specified time and no change of the hand feeling of the fabric.
Detailed Description
The invention provides printing adhesive cement which comprises the following components in parts by mass:
the solid content of the silane coupling agent modified waterborne polyurethane emulsion is 40-45 wt%;
the printing mucilage does not contain a cross-linking agent.
The silane coupling agent modified waterborne polyurethane emulsion is 40-65 parts by weight, preferably 45-50 parts by weight.
In the invention, the solid content of the silane coupling agent modified aqueous polyurethane emulsion is 45-50 wt%, preferably 48-50 wt%. In the present invention, the silane coupling agent modified aqueous polyurethane emulsion preferably includes Dolphin 1052r and/or Dolphin1486 r. According to the invention, the silane coupling agent modified waterborne polyurethane is used as a film forming material, the self-crosslinking property of the silane coupling agent modified waterborne polyurethane can enhance the stretchability and elasticity of the coating, the introduction of silicon also reduces the surface tension of the coating, and water cannot infiltrate the surface of the coating, so that the water resistance of the coating is enhanced, and the problem of insufficient adhesive force caused by the bridging effect of the silane coupling agent on the coating and a substrate is also improved.
Based on the mass parts of the silane coupling agent modified aqueous polyurethane emulsion, the printing mucilage comprises 15-50 parts of filler, preferably 20-40 parts, and more preferably 30-35 parts. In the invention, the filler comprises titanium dioxide and titanate modified calcium carbonate, and the mass ratio of the titanium dioxide to the titanate modified calcium carbonate is preferably 1:0.2-2.5, more preferably 1:0.5-2, and even more preferably 1:1-1.5. In the present invention, the titanium white powder is preferably rutile titanium white powder, and the titanium white powder preferably comprises An Nada 312,312. In the present invention, the particle size of the titanate-modified calcium carbonate is preferably 1000 to 1500 mesh. The invention adopts titanate modified calcium carbonate, enhances the compatibility with silane coupling agent modified waterborne polyurethane, and improves the coating performance
In the present invention, the preparation method of the titanate modified calcium carbonate preferably comprises the following steps: spraying titanate coupling agent solution onto the preheated calcium carbonate for modification to obtain the titanate modified calcium carbonate. In the invention, the mass ratio of the titanate coupling agent solution to the calcium carbonate is preferably 1.6:100. In the present invention, the temperature of the preheating is preferably 80℃and the time is preferably 5 to 10 minutes. In the present invention, the mass concentration of the titanate coupling agent solution is preferably 50%. In the present invention, the titanate coupling agent solution is preferably obtained by dissolving titanate in water. In the present invention, the number of spraying times is preferably 3, the time of each spraying is preferably 5min, and the interval time of spraying is preferably 2min. In the present invention, the time for the modification is preferably 5 minutes. The modification is preferably carried out with stirring at a rotational speed of 30 to 50 rpm. In the present invention, the modification is preferably performed in a high-speed mixer.
Based on the mass parts of the silane coupling agent modified aqueous polyurethane emulsion, the printing mucilage comprises 0.5 to 5 parts of thickener, preferably 1 to 4 parts, and more preferably 2 to 3 parts. In the present invention, the thickener preferably includes an alkali thickener, a polyurethane thickener, and a PTF thickener. In the present invention, the alkali thickener preferably comprises 8W, the polyurethane thickener preferably comprises ASE-60, and the PTF thickener preferably comprises RheovesAS 1189 and/or Loongrun TS 275. The various thickening agents balance the rheological property of the printing mucilage, so that the prepared coating has good form, and the elasticity, the cohesive force, the water resistance and the friction resistance of the coating are further improved.
Based on the mass parts of the silane coupling agent modified aqueous polyurethane emulsion, the printing mucilage comprises 1 to 3 parts of dispersing agent, preferably 1.5 to 2.5 parts. In the present invention, the dispersant preferably includes an ammonium acrylate dispersant and a sodium acrylate dispersant. In the present invention, the mass ratio of the ammonium acrylate dispersant to the sodium acrylate dispersant is preferably 0.3 to 3:1, more preferably 0.5 to 2:1, and even more preferably 1 to 1.5:1. In the present invention, the ammonium polyacrylate dispersant preferably includes basf 4141; the sodium polyacrylate dispersant preferably comprises nopodiaceae 5040. The invention selects the combination of the ammonium acrylate dispersing agent and the sodium acrylate dispersing agent, and balances the dispersing effect of the filler and the water resistance of the coating.
Based on the mass portion of the silane coupling agent modified aqueous polyurethane emulsion, the printing mucilage comprises 0.5 to 1 portion of defoamer, and preferably 0.6 to 0.8 portion. In the present invention, the antifoaming agent preferably includes a mineral oil antifoaming agent preferably includes blackbook 245 or a silicone-based antifoaming agent preferably includes BYK-028.
Based on the mass parts of the silane coupling agent modified aqueous polyurethane emulsion, the printing mucilage comprises 3-5 parts of emulsified paraffin, and preferably 4-4.5 parts of emulsified paraffin. The emulsified paraffin can play a role in resisting adhesion and increasing flexibility.
Based on the mass parts of the silane coupling agent modified aqueous polyurethane emulsion, the printing mucilage comprises 5-30 parts of water, preferably 10-25 parts, and more preferably 15-20 parts. In the present invention, the water is preferably deionized water.
In the present invention, the viscosity of the printing cement is preferably 100000 ～ 140000mpas, more preferably 110000 ～ 120000mpas.
The invention also provides a preparation method of the printing adhesive cement, which comprises the following steps: sequentially mixing the silane coupling agent modified waterborne polyurethane emulsion with the dispersing agent and the filler to obtain a dispersion liquid;
and mixing the dispersion liquid with ionized water, a defoaming agent, emulsified paraffin and a thickening agent in sequence to obtain the printing mucilage.
The invention sequentially mixes the silane coupling agent modified waterborne polyurethane emulsion with the dispersing agent and the filler to obtain dispersion liquid. In the present invention, the fineness of the powder in the dispersion is preferably less than 40 μm. If the fineness of the powder in the dispersion is more than 40 μm, the coating layer has a rough hand feeling and poor screen printing operability, and the effect of the powder cannot be fully exerted. Specifically, in the embodiment of the present invention, the preparation process of the dispersion liquid is: and (3) putting the silane coupling agent modified waterborne polyurethane emulsion into a dispersing kettle, starting stirring at a rotating speed of 300-400 r/min, adding a dispersing agent into the dispersing kettle, continuously stirring for 5min, slowly adding a filler in a stirring state, and after uniformly mixing, accelerating the stirring speed to 1000-1200 r/min and stirring for 10-20 min to obtain a dispersion liquid.
After the dispersion liquid is obtained, the dispersion liquid is sequentially mixed with ionized water, a defoaming agent, emulsified paraffin and a thickening agent to obtain the printing mucilage. The invention is not particularly limited, and the dispersion liquid, the ionized water, the defoamer, the emulsified paraffin and the thickener are mixed in sequence and uniformly by a mode well known to a person skilled in the art. In the present invention, water, an antifoaming agent, an emulsifier, emulsified paraffin and a thickener are preferably added to the dispersion in this order to be mixed in this order. In the mixing process, one substance is preferably added in the invention, and the next substance is added after the substances are uniformly stirred.
The invention mixes the dispersion liquid with ion water, defoamer, emulsified paraffin and thickener in turn, and filters the mixture. The filtration is not particularly limited in the present invention, and impurities may be removed by means well known to those skilled in the art.
The invention adopts the feeding sequence to facilitate the preparation of finished products.
The invention also provides application of the printing mucilage according to the scheme or the printing mucilage prepared by the preparation method according to the scheme in textile printing. In the present invention, the fabric preferably comprises one of elastic nylon, polyester and cotton cloth.
In order to further illustrate the present invention, the printing paste and the method for preparing the same according to the present invention will be described in detail with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
The printing adhesive cement comprises the following components: 45 parts of Dolphin1486r, 0.9 part of a polyacrylic acid ammonium salt dispersing agent (basf 4141), 0.3 part of a polyacrylic acid sodium salt dispersing agent (nopaceae 5040), 25 parts of rutile titanium dioxide (An Nada) and 1500-mesh titanate modified calcium carbonate, 8.7 parts of deionized water, 1 part of a mineral oil defoamer (brix 245), 3 parts of emulsified paraffin, 0.3 part of an alkali thickener (dow 8W), 0.3 part of a polyurethane thickener (ASE-60) and 11890.5 parts of a PTF thickener Rheovis.
The preparation method of the titanate modified calcium carbonate comprises the following steps:
100 parts of 1500 mesh calcium carbonate was put into a high speed mixer at a speed of 30rpm and preheated at 80℃for 5min. 1.6 parts of titanate coupling agent solution with the mass content of 50% is sprayed for 3 times, wherein the spraying time is 5min each time, and the interval is 2min each time. And (5) uniformly mixing at a high speed for 5min to obtain the titanate modified calcium carbonate.
The preparation method of the printing adhesive cement comprises the following steps:
(1) Weighing silane coupling agent modified aqueous polyurethane emulsion according to the formula amount, putting the emulsion into a dispersion kettle, and starting stirring at a rotating speed of 400r/min;
(2) Sequentially adding the two dispersants into a dispersing kettle according to the formula amount, stirring for 5min, and uniformly stirring;
(3) Slowly adding the rutile titanium dioxide and the titanate modified calcium carbonate into a dispersing kettle under the stirring state, uniformly mixing, accelerating the stirring speed to 1100r/min, and stirring at a high speed for 15min; dispersing until the fineness is qualified: less than 40 μm;
(4) Adding deionized water and uniformly stirring;
(5) Adding a defoaming agent and uniformly stirring;
(6) Adding emulsified paraffin and stirring uniformly;
(7) Adding a metered thickener and uniformly stirring;
(8) Filtration gives a printing cement with a consistency of 130000 mpas.
Coating of printing paste obtained in example 1 on nylon cloth: screen printing for 3 times, three knives each time, and then drying at 100deg.C for 1min. The water resistance, elastic elongation, wet rub resistance, hand feel and reverse tack were tested.
The test method is as follows: 1. water resistance: washing in a washing machine at 60 ℃ for 1h for 20 times, and observing the bubbling and falling-off conditions;
2 elastic elongation: the cloth plate printed by the slurry is cut into cloth strips with the width of 2cm and the length of 5cm, and the cloth strips are slowly elongated under constant tension until the coating cracks. Calculating elongation;
3. wet rub resistance: testing by adopting a scratch resistance tester;
4 hand feeling: hand touch;
5. and (3) anti-sticking: folding the cloth plate, pressing for 24 hours under the pressure of 5kg, and observing the adhesion damage condition of the cloth plate.
The test results are shown in table 1:
TABLE 1 results of testing the coating for Water resistance, elastic elongation, wet rub resistance, hand feel and reverse tack
| Aqueous 60 DEG C | Elastic elongation | Wet-erase resistant | Hand feel | Anti-sticking |
| 20 times without falling off | 200％ | Grade 4 | Dry and comfortable | Without any means for |
As can be seen from Table 1, the obtained printing cement is washed with water at 60 ℃ for 20 times without falling off and foaming; an elastic elongation of 200; wet wiping 4 grades; dry and soft hand feeling. The performance can completely meet the application requirements.
Example 2
The printing adhesive cement comprises the following components: 65 parts of Dolphin1486r, 0.7 part of a polyacrylic acid ammonium salt dispersing agent (basf 4141), 0.3 part of a polyacrylic acid sodium salt dispersing agent (nopaceae 5040), 15 parts of rutile titanium dioxide (An Nada) and 10 parts of titanate modified calcium carbonate prepared in 1500-mesh example 1, 3.9 parts of deionized water, 1 part of a mineral oil defoamer (blakeslet 245), 3 parts of emulsified paraffin, 0.3 part of an alkali thickener (ceramic 8W), 0.3 part of a polyurethane thickener (ASE-60) and 0.5 part of a PTF thickener (longgrunts 275).
The preparation method of the printing adhesive cement comprises the following steps:
(1) Weighing silane coupling agent modified aqueous polyurethane emulsion according to the formula amount, putting the emulsion into a dispersion kettle, starting stirring, and rotating at 300r/min;
(2) Sequentially adding the two dispersants into a dispersing kettle according to the formula amount, stirring for 5min, and uniformly stirring;
(3) Slowly adding the rutile titanium dioxide and the titanate modified calcium carbonate into a dispersing kettle under the stirring state, uniformly mixing, accelerating the stirring speed to 1100r/min, and stirring at a high speed for 15min; dispersing until the fineness is qualified: less than 40 μm;
(4) Adding deionized water and uniformly stirring;
(5) Adding a defoaming agent and uniformly stirring;
(6) Adding emulsified paraffin and stirring uniformly;
(7) Adding a metered thickener and uniformly stirring;
(8) Filtration gives a printing cement with a consistency of 140000 mpas.
Coating of printing paste obtained in example 2 on nylon cloth: screen printing was performed 3 times, three knives each, and then dried at 100 ℃ for 1min to test water resistance, elastic elongation, wet rub resistance, hand feel and reverse tack. The test results are shown in table 2:
TABLE 2 results of testing the coating for Water resistance, elastic elongation, wet rub resistance, hand feel and reverse tack
| Aqueous 60 DEG C | Elastic elongation | Wet-erase resistant | Hand feel | Anti-sticking |
| 20 times without falling off | 350％ | Grade 4 | Dry and comfortable | Without any means for |
As is clear from Table 2, the product was washed with water at 60℃for 20 times without falling off and foaming; an elastic elongation of 350%; wet wiping 4 grades; dry and soft hand feeling. Can meet the requirements.
Example 3
The printing adhesive cement comprises the following components: 55 parts of Dolphin1486r, 0.7 part of a polyacrylic acid ammonium salt dispersing agent (basf 4141), 0.3 part of a polyacrylic acid sodium salt dispersing agent (nopaceae 5040), 20 parts of rutile titanium dioxide (An Nada) and 1500 meshes of titanate modified calcium carbonate prepared in example 1, 9.2 parts of deionized water, 1 part of a mineral oil defoamer (Blackton 245), 3 parts of emulsified paraffin, 0.3 part of an alkali thickener (ceramic 8W), 0.2 part of a polyurethane thickener (ASE-60) and 0.5 part of a PTF thickener (LoonggrunTS 275).
The preparation method of the printing adhesive cement comprises the following steps:
(1) Weighing silane coupling agent modified aqueous polyurethane emulsion according to the formula amount, putting the emulsion into a dispersion kettle, starting stirring, and rotating at 300r/min;
(2) Sequentially adding the two dispersants into a dispersing kettle according to the formula amount, stirring for 5min, and uniformly stirring;
(3) Slowly adding the rutile titanium dioxide and the titanate modified calcium carbonate into a dispersing kettle under the stirring state, uniformly mixing, accelerating the stirring speed to 1100r/min, and stirring at a high speed for 15min; dispersing until the fineness is qualified: less than 40 μm;
(4) Adding deionized water and uniformly stirring;
(5) Adding a defoaming agent and uniformly stirring;
(6) Adding emulsified paraffin and stirring uniformly;
(7) Adding a metered thickener and uniformly stirring;
(8) Filtration gives a printing cement with a consistency of 105000 mpas.
Coating of printing paste obtained in example 3 on nylon cloth: screen printing was performed 3 times, three knives each, and then dried at 100 ℃ for 1min to test water resistance, elastic elongation, wet rub resistance, hand feel and reverse tack.
The test results are shown in table 3:
TABLE 3 results of testing the coating for Water resistance, elastic elongation, wet rub resistance, hand feel and reverse tack
| Washing with water at 60deg.C | Elastic elongation | Wet-erase resistant | Hand feel | Anti-sticking |
| 20 times without falling off | 300 | Grade 4 | Dry and comfortable | Without any means for |
As can be seen from Table 3, the obtained printing cement is washed with water at 60 ℃ for 20 times without falling off and foaming; an elastic elongation of 300%; wet wiping 4 grades; dry and soft hand feeling. The performance can completely meet the application requirements.
Although the foregoing embodiments have been described in some, but not all embodiments of the invention, other embodiments may be obtained according to the present embodiments without departing from the scope of the invention.
Claims (10)
1. The printing adhesive cement is characterized by comprising the following components in parts by mass:
the solid content of the silane coupling agent modified waterborne polyurethane emulsion is 40-45 wt%;
the printing mucilage does not contain a cross-linking agent.
2. Printing cement according to claim 1, wherein the silane coupling agent modified aqueous polyurethane emulsion comprises Dolphin 1052r and/or Dolphin1486 r.
3. The printing paste of claim 1 wherein the filler comprises titanium dioxide and titanate modified calcium carbonate;
the mass ratio of the titanium dioxide to the titanate modified calcium carbonate is 1:0.2-2.5.
4. A printing paste according to claim 3 wherein the process for preparing the titanate modified calcium carbonate comprises the steps of: spraying titanate coupling agent solution onto the preheated calcium carbonate for modification to obtain the titanate modified calcium carbonate.
5. Printing cement according to claim 1, wherein the thickener comprises an alkali thickener, a polyurethane thickener and a PTF thickener.
6. A printing paste according to claim 5 wherein the alkali thickener comprises 8W, the polyurethane thickener comprises ASE-60 and the PTF thickener comprises RheovisAS 1189 and/or loonggrun TS 275.
7. Printing cement according to claim 1, wherein the dispersant comprises an ammonium acrylate dispersant and a sodium acrylate dispersant;
the mass ratio of the ammonium acrylate dispersing agent to the sodium acrylate dispersing agent is 0.3-3:1.
8. The printing paste of claim 7 wherein the ammonium polyacrylate dispersant comprises basf 4141; the sodium polyacrylate dispersant includes nopodiaceae 5040.
9. A process for the preparation of a printing cement according to any one of claims 1 to 8, characterized in that it comprises the following steps: sequentially mixing the silane coupling agent modified aqueous polyurethane emulsion with a dispersing agent and a filler to obtain a dispersion;
and mixing the dispersion liquid with water, a defoaming agent, emulsified paraffin and a thickening agent in sequence to obtain the printing mucilage.
10. Use of a printing cement according to any one of claims 1 to 8 or a printing cement prepared by a method according to claim 9 in textile printing.
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