CN112680026A - Scraping ink and preparation method and application thereof - Google Patents
Scraping ink and preparation method and application thereof Download PDFInfo
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- CN112680026A CN112680026A CN202011568405.7A CN202011568405A CN112680026A CN 112680026 A CN112680026 A CN 112680026A CN 202011568405 A CN202011568405 A CN 202011568405A CN 112680026 A CN112680026 A CN 112680026A
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- 238000007790 scraping Methods 0.000 title claims abstract description 56
- 238000002360 preparation method Methods 0.000 title abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000011347 resin Substances 0.000 claims abstract description 29
- 229920005989 resin Polymers 0.000 claims abstract description 29
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 25
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 23
- 239000002994 raw material Substances 0.000 claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 28
- 239000002041 carbon nanotube Substances 0.000 claims description 28
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 28
- 239000006229 carbon black Substances 0.000 claims description 27
- 239000002270 dispersing agent Substances 0.000 claims description 17
- 239000003960 organic solvent Substances 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 16
- 229920003169 water-soluble polymer Polymers 0.000 claims description 12
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 6
- 229920002635 polyurethane Polymers 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 6
- 239000003381 stabilizer Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 239000003002 pH adjusting agent Substances 0.000 claims description 2
- 238000007639 printing Methods 0.000 abstract description 17
- 239000002562 thickening agent Substances 0.000 abstract description 9
- 238000003860 storage Methods 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 abstract description 2
- 239000000976 ink Substances 0.000 description 50
- 239000010410 layer Substances 0.000 description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 15
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 15
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 10
- 238000007650 screen-printing Methods 0.000 description 6
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 5
- 239000001768 carboxy methyl cellulose Substances 0.000 description 5
- 239000004205 dimethyl polysiloxane Substances 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 5
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 5
- 238000000227 grinding Methods 0.000 description 5
- 239000002480 mineral oil Substances 0.000 description 5
- 235000010446 mineral oil Nutrition 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 5
- -1 polydimethylsiloxane Polymers 0.000 description 5
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 5
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 5
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 5
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 5
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 5
- 229920005552 sodium lignosulfonate Polymers 0.000 description 5
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 description 4
- 230000003749 cleanliness Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000011087 paperboard Substances 0.000 description 3
- 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 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 235000010489 acacia gum Nutrition 0.000 description 2
- 239000013530 defoamer Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229920000159 gelatin Polymers 0.000 description 2
- 239000008273 gelatin Substances 0.000 description 2
- 235000019322 gelatine Nutrition 0.000 description 2
- 235000011852 gelatine desserts Nutrition 0.000 description 2
- 238000007646 gravure printing Methods 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 235000010413 sodium alginate Nutrition 0.000 description 2
- 239000000661 sodium alginate Substances 0.000 description 2
- 229940005550 sodium alginate Drugs 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000230 xanthan gum Substances 0.000 description 2
- 235000010493 xanthan gum Nutrition 0.000 description 2
- 229920001285 xanthan gum Polymers 0.000 description 2
- 229940082509 xanthan gum Drugs 0.000 description 2
- 229920000084 Gum arabic Polymers 0.000 description 1
- 241000978776 Senegalia senegal Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000205 acacia gum Substances 0.000 description 1
- 239000001785 acacia senegal l. willd gum Substances 0.000 description 1
- UDMBCSSLTHHNCD-KQYNXXCUSA-N adenosine 5'-monophosphate Chemical compound C1=NC=2C(N)=NC=NC=2N1[C@@H]1O[C@H](COP(O)(O)=O)[C@@H](O)[C@H]1O UDMBCSSLTHHNCD-KQYNXXCUSA-N 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000007647 flexography Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The invention provides scraping ink and a preparation method and application thereof. The scraping printing ink is prepared from raw materials including color paste, water-based resin, a flatting agent, a thickening agent and a defoaming agent. The water-based scraping ink is prepared by compounding the color paste, the water-based resin, the flatting agent, the thickening agent and the defoaming agent, is green and environment-friendly, and can be suitable for various printing modes. The scratch layer obtained by printing has good covering property, has excellent covering property even if the scratch layer is as thin as 1-5 mu m, and meets the requirements of national standards and cold light source irradiation. In addition, the prepared scraping layer is balanced in wear resistance and easy scraping property, and is not easy to wear and fall off in production and circulation links while being easy to scrape. When the prepared scraping layer is scraped, the ink is agglomerated and cannot be pulverized, and the cleaning degree is high. The scraping ink has stable performance and can not be obviously difficult to scrape due to longer storage time.
Description
Technical Field
The invention belongs to the technical field of printing ink, and particularly relates to scraping ink as well as a preparation method and application thereof.
Background
Scratch ink is an ink used in the printing of scratch layers for scratch cards, invoices, consumer tickets and the like. The scraping layer is a coating layer for covering the image-text information on the base material, and the information covered by the scraping layer can be seen by scraping with a nail or a hard object.
For the scratch-off layer, abrasion resistance and easy scratch-off are relatively contradictory. The actual product is a result of the mutual balance of the two indexes of wear resistance and easy scraping. The scraping layer is easy to scrape but not too easy to scrape, otherwise, the scraping layer is easy to abrade and fall off in the production and circulation links; but also not too wear resistant, otherwise difficult to scrape.
At present, mature scraping ink basically belongs to an oily system, the pollution in the printing process is serious, screen printing is mostly adopted, and the application range is narrow.
Disclosure of Invention
The present invention is directed to solving at least one of the above problems in the prior art. Therefore, the invention provides scraping ink, which solves the problems that the existing scraping ink belongs to an oily system, the pollution is serious in the printing process, and the application range is narrow.
The invention also provides a preparation method and application of the scraping ink.
The invention provides a scraping ink which comprises color paste, water-based resin, a flatting agent and a defoaming agent.
According to some embodiments of the invention, the composition comprises the following components in parts by weight:
color paste: 80-120 parts of (a) a water-soluble polymer,
aqueous resin: 50 to 100 parts of a water-soluble polymer,
leveling agent: 0.01 to 2 parts by weight of a stabilizer,
defoaming agent: 0.01-2 parts.
According to some embodiments of the present invention, the raw materials for preparing the color paste comprise carbon nanotubes and/or carbon black.
According to some embodiments of the invention, the color paste is prepared from the following raw materials in parts by weight:
carbon nanotube: 4 to 10 parts of (A) a water-soluble polymer,
carbon black: 0.01 to 5 parts by weight of a stabilizer,
dispersing agent: 0.5 to 5 parts by weight of a stabilizer,
organic solvent: 5 to 25 parts of a solvent, and a solvent,
water: 60-100 parts.
According to some embodiments of the invention, in the raw materials for preparing the color paste, the tube diameter of the carbon nanotube is 1-100 nm.
According to some embodiments of the invention, in the raw materials for preparing the color paste, the tube diameter of the carbon nanotube is 10-30 nm.
The carbon nanotubes act as pigments and toners, providing hiding power for the scratch ink.
According to some embodiments of the invention, in the raw materials for preparing the color paste, the particle size of the carbon black is 10-100 nm.
Carbon black acts as a pigment and toner, providing hiding power for the scratch ink.
In the raw materials for preparing the color paste, a coating film formed by the carbon nano tube slurry has excellent covering performance. And the carbon black is added to increase the concentration.
According to some embodiments of the present invention, in the raw materials for preparing the color paste, the dispersant is at least one of polyvinylpyrrolidone, sodium carboxymethylcellulose, sodium dodecylbenzenesulfonate and sodium lignosulfonate.
The dispersant plays a dispersing role, so that the carbon nano tube or the carbon black is suspended without sedimentation and agglomeration.
According to some embodiments of the present invention, the organic solvent in the raw materials for preparing the color paste is ethanol, isopropanol or ethylene glycol.
The organic solvent plays a role in adjusting viscosity, leveling property and drying speed.
According to some embodiments of the invention, the color paste is prepared by: adding a dispersing agent into an organic solvent, adding the carbon nano tube and the carbon black after the carbon nano tube and the carbon black are completely dissolved, stirring for 20-60 min by using a dispersion disc at the rotating speed of 300-1800 rpm, and then grinding for 2-5 h by using a circulating sand mill at the speed of 900-1800 rpm.
According to some embodiments of the present invention, in the raw material for preparing the scratch ink, the aqueous resin is an aqueous acrylate or an aqueous polyurethane.
According to some embodiments of the invention, the aqueous resin has an elongation of 900 to 1200%.
The addition of the water-based resin endows the ink with the performances of wear resistance, easy scraping, no pulverization of ink clusters during scraping and no obvious scraping difficulty due to prolonged storage time.
According to some embodiments of the present invention, in the preparation raw material of the doctor-blading ink, the leveling agent is acrylate or modified polydimethylsiloxane.
The addition of the leveling agent has the function of enhancing the leveling property, so that the phenomena of sagging, pinholes and the like cannot be formed in the printing process.
When the screen printing is performed, a thickening agent needs to be added because the screen printing needs to have higher ink viscosity.
According to some embodiments of the present invention, the thickener is an equal proportion mixture of xanthan gum, gum arabic, gelatin, and sodium alginate in the raw material for making the doctor ink.
According to some embodiments of the invention, the defoamer comprises a silica-containing mineral oil type defoamer.
According to some embodiments of the invention, the composition further comprises 0.01 to 5 parts by weight of a pH regulator.
According to some embodiments of the invention, the pH adjusting agent comprises one of ammonia, ethanolamine, and AMP.
The second aspect of the present invention provides a preparation method of the above scraping ink, wherein the preparation method comprises: and under the stirring state, the water-based resin, the flatting agent, the defoaming agent and the pH regulator are sequentially added into the color paste and uniformly dispersed.
According to some embodiments of the invention, the stirring is performed at a speed of 300 to 800rpm for 30 to 60 min.
A third aspect of the invention provides the use of a scratch ink as described above for the preparation of a scratch layer.
The scraping ink disclosed by the invention at least has the following beneficial effects:
the water-based scraping ink is prepared by compounding the color paste, the water-based resin, the flatting agent, the thickening agent and the defoaming agent, is green and environment-friendly, and can be suitable for various printing modes.
The scraping ink disclosed by the invention can be used for regulating the viscosity by using a thickening agent, is thinner when not used, can be used for gravure printing and flexographic printing, is proper in viscosity after being added, and can be used for screen printing; the scraping ink in the related technology has poor shading capability, and can meet the shading requirement only by being printed with a very thick (10-20 mu m) by silk screen printing, and if the scraping ink is printed by gravure printing or flexography, the printed thickness is very small, and the shading capability is unqualified.
The scraping layer obtained by printing of the scraping ink disclosed by the invention is good in covering property, has excellent covering property even if the thickness is 1-5 mu m, and meets the requirements of national standards and cold light source irradiation.
The scraping layer prepared by the scraping ink provided by the invention is balanced in wear resistance and easy scraping property, and is not easy to wear and fall off in production and circulation links while being easy to scrape.
According to the scraping ink disclosed by the invention, when the prepared scraping layer is scraped, the ink is agglomerated and cannot be pulverized, and the cleaning degree is high.
The scraping ink disclosed by the invention is stable in performance and cannot be obviously difficult to scrape due to longer storage time.
Detailed Description
The following are specific examples of the present invention, and the technical solutions of the present invention will be further described with reference to the examples, but the present invention is not limited to the examples.
Example 1
This example prepared a doctor ink comprising the following components in parts by weight:
color paste: 80 parts of (a) a water-soluble polymer,
aqueous resin: 50 parts of (a) a mixture of (b),
leveling agent: 0.05 part by weight of a reaction kettle,
defoaming agent: 0.05 part.
Wherein the water-based resin is water-based acrylate or water-based polyurethane.
The leveling agent is acrylate or modified polydimethylsiloxane.
The antifoaming agent includes silica-containing mineral oil type antifoaming agent.
The scraping printing ink also contains a proper amount of pH regulator ammonia water, and the pH value is regulated to 7-8, so that the resin can be stably dispersed in the solution.
The preparation method of the scraping ink comprises the following steps: and under the stirring state, sequentially adding the water-based resin, the flatting agent, the defoaming agent and the pH regulator into the color paste, and uniformly dispersing. The stirring speed was 500rpm for 45 min.
The color paste comprises the following raw materials in parts by weight:
carbon nanotube: 4 parts of carbon black: 0.05 part, dispersant: 0.5 part, organic solvent: 5 parts, water: 60 parts.
In the raw materials for preparing the color paste, the pipe diameter of the carbon nano tube is 20 nm. The particle size of the carbon black was 50 nm.
The dispersant is at least one of polyvinylpyrrolidone, sodium carboxymethylcellulose, sodium dodecylbenzenesulfonate and sodium lignosulfonate.
The organic solvent is ethanol, isopropanol or ethylene glycol.
The preparation method of the color paste comprises the following steps: adding a dispersing agent into an organic solvent, adding the carbon nano tube and the carbon black after the carbon nano tube and the carbon black are completely dissolved, stirring for 40min by using a dispersion disc at the rotating speed of 500rpm, and then grinding for 3h by using a circulating sand mill at the speed of 1300 rpm.
Example 2
This example prepared a doctor ink comprising the following components in parts by weight:
color paste: 100 parts of (a) a water-soluble polymer,
aqueous resin: 75 parts of (a) a water-soluble polymer,
leveling agent: 1 part of (A) and (B),
defoaming agent: 1 part.
Wherein the water-based resin is water-based acrylate or water-based polyurethane.
The leveling agent is acrylate or modified polydimethylsiloxane.
The antifoaming agent includes silica-containing mineral oil type antifoaming agent.
The scraping printing ink also contains a proper amount of pH regulator ammonia water, and the pH value is regulated to 7-8, so that the resin can be stably dispersed in the solution.
The preparation method of the scraping ink comprises the following steps: and under the stirring state, sequentially adding the water-based resin, the flatting agent, the defoaming agent and the pH regulator into the color paste, and uniformly dispersing. The stirring speed was 500rpm for 45 min.
The color paste comprises the following raw materials in parts by weight:
carbon nanotube: 7 parts of carbon black: 2 parts, dispersant: 2 parts, organic solvent: 15 parts, water: 80 parts of the raw materials.
In the raw materials for preparing the color paste, the pipe diameter of the carbon nano tube is 20 nm. The particle size of the carbon black was 50 nm.
The dispersant is at least one of polyvinylpyrrolidone, sodium carboxymethylcellulose, sodium dodecylbenzenesulfonate and sodium lignosulfonate.
The organic solvent is ethanol, isopropanol or ethylene glycol.
The preparation method of the color paste comprises the following steps: adding a dispersing agent into an organic solvent, adding the carbon nano tube and the carbon black after the carbon nano tube and the carbon black are completely dissolved, stirring for 40min by using a dispersion disc at the rotating speed of 500rpm, and then grinding for 3h by using a circulating sand mill at the speed of 1300 rpm.
Example 3
This example prepared a doctor ink comprising the following components in parts by weight:
color paste: 120 parts of (a) to (b),
aqueous resin: 100 parts of (a) a water-soluble polymer,
leveling agent: 2 parts of (a) to (b),
defoaming agent: and 2 parts.
Wherein the water-based resin is water-based acrylate or water-based polyurethane.
The leveling agent is acrylate or modified polydimethylsiloxane.
The antifoaming agent includes silica-containing mineral oil type antifoaming agent.
The scraping printing ink also contains a proper amount of pH regulator ammonia water, and the pH value is regulated to 7-8, so that the resin can be stably dispersed in the solution.
The preparation method of the scraping ink comprises the following steps: and under the stirring state, sequentially adding the water-based resin, the flatting agent, the defoaming agent and the pH regulator into the color paste, and uniformly dispersing. The stirring speed was 500rpm for 45 min.
The color paste comprises the following raw materials in parts by weight:
carbon nanotube: 10 parts of carbon black: 5 parts, dispersant: 5 parts, organic solvent: 25 parts of water: 100 parts.
In the raw materials for preparing the color paste, the pipe diameter of the carbon nano tube is 20 nm. The particle size of the carbon black was 50 nm.
The dispersant is at least one of polyvinylpyrrolidone, sodium carboxymethylcellulose, sodium dodecylbenzenesulfonate and sodium lignosulfonate.
The organic solvent is ethanol, isopropanol or ethylene glycol.
The preparation method of the color paste comprises the following steps: adding a dispersing agent into an organic solvent, adding the carbon nano tube and the carbon black after the carbon nano tube and the carbon black are completely dissolved, stirring for 40min by using a dispersion disc at the rotating speed of 500rpm, and then grinding for 3h by using a circulating sand mill at the speed of 1300 rpm.
Example 4
This example prepared a doctor ink comprising the following components in parts by weight:
color paste: 100 parts of (a) a water-soluble polymer,
aqueous resin: 80 parts of (a) a water-soluble polymer,
leveling agent: 0.2 part by weight of a reaction kettle,
thickening agent: 1 part of (A) and (B),
defoaming agent: 0.2 part.
Wherein the water-based resin is water-based acrylate or water-based polyurethane.
The leveling agent is acrylate or modified polydimethylsiloxane.
The thickener is a mixture of xanthan gum, arabic gum, gelatin and sodium alginate in equal proportion.
The antifoaming agent includes silica-containing mineral oil type antifoaming agent.
The scraping printing ink also contains a proper amount of pH regulator ammonia water, and the pH value is regulated to 7-8, so that the resin can be stably dispersed in the solution.
The preparation method of the scraping ink comprises the following steps: and under the stirring state, sequentially adding the water-based resin, the flatting agent, the thickening agent, the defoaming agent and the pH regulator into the color paste, and uniformly dispersing. The stirring speed was 500rpm for 45 min.
The color paste comprises the following raw materials in parts by weight:
carbon nanotube: 5 parts of carbon black: 2.5 parts, dispersant: 2 parts, organic solvent: 10 parts of water: 80.5 parts.
In the raw materials for preparing the color paste, the pipe diameter of the carbon nano tube is 20 nm. The particle size of the carbon black was 50 nm.
The dispersant is at least one of polyvinylpyrrolidone, sodium carboxymethylcellulose, sodium dodecylbenzenesulfonate and sodium lignosulfonate.
The organic solvent is ethanol, isopropanol or ethylene glycol.
The preparation method of the color paste comprises the following steps: adding a dispersing agent into an organic solvent, adding the carbon nano tube and the carbon black after the carbon nano tube and the carbon black are completely dissolved, stirring for 40min by using a dispersion disc at the rotating speed of 500rpm, and then grinding for 3h by using a circulating sand mill at the speed of 1300 rpm.
Test example 1
The scratch ink prepared in example 4 was used as a test object and two commercially available scratch inks were used as a control in this example to prepare a scratch card having a scratch layer thickness of 15 μm. The preparation method comprises the steps of printing ink on paperboard in a screen printing mode, preprinting UV gloss oil on the paperboard, placing the paperboard in an oven after printing, drying and cooling to room temperature for later use. The scratch cards were tested for scratch ease, cleanliness, stability and hiding performance.
The scratchability is carried out according to GB/T6739-2006, a 6B pencil is used, the coating can be scratched when the load is 50-200g, and the bottom penetration is qualified. If the load is smaller, the steel can be scraped, and the steel is considered to be too easy to scrape and not wear-resistant; if the load is greater to scrape, it is considered too wear resistant to scrape. Meanwhile, when the 3M adhesive tape is used for removing the tearing scraping layer, the layer is required not to be removed.
The degree of cleanliness means that the ink does not become powdery when scraped off.
The stability refers to that the pencil can be scratched when the pencil is stored for more than 6 months under normal temperature and normal humidity conditions or stored for 12 days at 50 ℃, and the 6B pencil can be loaded by 50-120 g. Or the pencil is stored for 72 hours at the humidity of 80% at the temperature of 80 ℃, the pencil is taken out and then is recovered to the room temperature state, and the 6B pencil can be scratched under the load of 150-200 g.
The covering performance refers to that the medical cold light source of a 250W xenon lamp irradiates the part with the scraping coating on the finished scraping card, the covered image-text information cannot be seen, and the number of light spots with the allowed pinhole size is less than 1/cm2。
The results are shown in Table 1.
TABLE 1 test results for a scratch layer thickness of 15 μm
Test example 2
In this example, the scratch ink prepared in example 4 was tested in the same manner as in test example 1, and two commercially available scratch inks were used to prepare a scratch card. Except that the thickness of the scratch layer was 2 μm in this example. The test results are shown in table 2.
TABLE 2 test results for a scratch layer thickness of 2 μm
| Test items | Example 4 | Commercial scratch ink 1 | Commercial scratch ink 2 |
| Easy scraping property | Qualified | Qualified | Qualified |
| Degree of cleanliness | Qualified | Qualified | Qualified |
| Stability of | Qualified | Qualified | Fail to be qualified |
| Hiding Properties | Qualified | Fail to be qualified | Fail to be qualified |
The present invention has been described in detail with reference to the embodiments, but the present invention is not limited to the embodiments described above, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. The scraping ink is characterized by comprising color paste, water-based resin, a flatting agent and a defoaming agent.
2. The doctoring ink of claim 1, comprising the following components in parts by weight:
color paste: 80-120 parts of (a) a water-soluble polymer,
aqueous resin: 50 to 100 parts of a water-soluble polymer,
leveling agent: 0.01 to 2 parts by weight of a stabilizer,
defoaming agent: 0.01-2 parts.
3. The scraping ink as claimed in claim 1 or 2, wherein the raw material for preparing the color paste comprises carbon nanotubes and/or carbon black.
4. The scraping ink as claimed in claim 3, wherein the raw materials for preparing the color paste comprise the following components in parts by weight:
carbon nanotube: 4 to 10 parts of (A) a water-soluble polymer,
carbon black: 0.01 to 5 parts by weight of a stabilizer,
dispersing agent: 0.5 to 5 parts by weight of a stabilizer,
organic solvent: 5 to 25 parts of a solvent, and a solvent,
water: 60-100 parts.
5. The scraping ink as claimed in claim 3, wherein the carbon nanotubes have a tube diameter of 1 to 100 nm.
6. The doctor ink according to claim 3, wherein the carbon black has a particle size of 10 to 100 nm.
7. The scraping ink according to claim 1 or 2, wherein the aqueous resin is an aqueous acrylate or an aqueous polyurethane.
8. The scraping ink according to claim 1 or 2, further comprising 0.01 to 5 parts by weight of a pH adjuster.
9. The method of making the doctoring ink of claim 8, wherein the method comprises: and under the stirring state, the water-based resin, the flatting agent, the defoaming agent and the pH regulator are sequentially added into the color paste and uniformly dispersed.
10. Use of the doctor ink of any one of claims 1 to 8 for producing a doctor layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011568405.7A CN112680026A (en) | 2020-12-25 | 2020-12-25 | Scraping ink and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011568405.7A CN112680026A (en) | 2020-12-25 | 2020-12-25 | Scraping ink and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112680026A true CN112680026A (en) | 2021-04-20 |
Family
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Cited By (2)
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| CN114015098A (en) * | 2021-12-28 | 2022-02-08 | 上海佳美佳艺术品经营有限公司 | Light-transmitting scratch picture material and application thereof |
| CN114410150A (en) * | 2022-01-27 | 2022-04-29 | 广东阿诺捷喷墨科技有限公司 | UV-LED digital ink-jet silver scraping ink and spraying process thereof |
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| CN114410150A (en) * | 2022-01-27 | 2022-04-29 | 广东阿诺捷喷墨科技有限公司 | UV-LED digital ink-jet silver scraping ink and spraying process thereof |
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Application publication date: 20210420 |