CN115519919A - Ink jet material, preparation method and printing device - Google Patents
Ink jet material, preparation method and printing device Download PDFInfo
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- CN115519919A CN115519919A CN202211242539.9A CN202211242539A CN115519919A CN 115519919 A CN115519919 A CN 115519919A CN 202211242539 A CN202211242539 A CN 202211242539A CN 115519919 A CN115519919 A CN 115519919A
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- 239000011248 coating agent Substances 0.000 claims abstract description 262
- 239000001023 inorganic pigment Substances 0.000 claims abstract description 127
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- 230000002378 acidificating effect Effects 0.000 claims description 18
- 239000000126 substance Substances 0.000 claims description 18
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- OIDPCXKPHYRNKH-UHFFFAOYSA-J chrome alum Chemical compound [K]OS(=O)(=O)O[Cr]1OS(=O)(=O)O1 OIDPCXKPHYRNKH-UHFFFAOYSA-J 0.000 claims description 7
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5218—Macromolecular coatings characterised by inorganic additives, e.g. pigments, clays
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The invention discloses an ink-jet material, a preparation method and a printing device, wherein the ink-jet material comprises the following components: a dielectric layer; the first coating is arranged on one side of the dielectric layer and comprises a first inorganic pigment and a first adhesive; the second coating is arranged on one side, far away from the dielectric layer, of the first coating and comprises a pearlescent material, a second inorganic pigment and a second adhesive; and a third coating layer, wherein the third coating layer is arranged on the side of the second coating layer far away from the first coating layer, and the third coating layer comprises a third inorganic pigment and a third adhesive. The ink-jet material provided by the invention realizes the ink fixing effect on ink-jet and the pearlescent effect of ink-jet printing by arranging the multilayer coating, the image does not influence the pearlescent effect, and the detailed expression of the image is not interfered by the pearlescent effect.
Description
Technical Field
The invention belongs to the field of printing consumables, and particularly relates to an ink-jet material, a preparation method and a printing device.
Background
If pearlescent effects are to be achieved by means of ink jet printing, it is generally necessary to achieve such effects by coating the ink jet consumable with a film. The reason why the film is arranged above the image may cause the problems of low image density, low image reflection gloss, poor image detail expression and the like, thereby affecting the image color density and the whole image transparency is mainly that the incident light is blocked and reflected by the gloss pigment contained in the film.
As described in JP5385199B2, the gloss effect is caused by the reflection of incident light from the gloss surface after penetrating the first ink receiving layer, and therefore, too thick the first ink receiving layer inevitably causes too much loss of incident light and makes the gloss effect of the product insignificant; if the first ink receiving layer does not influence light transmission, local reduction of the ink absorption of the picture can occur, the phenomenon that ink absorption is insufficient and spreads to the periphery inevitably occurs in places with large density, so that the picture quality is reduced, the gloss pigment is directly mixed and added into the second ink receiving layer, the gloss pigment is in a random arrangement state at the moment, if the flaky gloss pigment is overlapped, the first ink receiving layer is not influenced by light transmission and is inevitably thin, the ink absorption performance needs to be completed by depending on the second ink receiving layer, and at the moment, the ink absorption performance is influenced by the overlapping of the gloss pigment.
In addition, the printing glossy paper with an electrostatic imaging output mode can also be adopted, the printing layer is prepared by mixing the glossy pigment and the resin, and the image is covered above the printing layer. Ink jet imaging methods are methods in which the ink penetrates into the coating and thus the imaging medium needs to have a certain water absorption, while printed electronic inks are attached first and then to the surface of the coating and there is no requirement for the medium to be absorbent and thus there is no way to jet ink in such a manner.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention aims to provide an ink jet material, a preparation method and a printing device. The ink-jet material provided by the invention realizes the ink fixing effect on ink-jet and the pearlescent effect of ink-jet printing by arranging the multilayer coating, the image does not influence the pearlescent effect, and the detailed expression of the image is not interfered by the pearlescent effect.
In one aspect of the present invention, an inkjet material is presented. According to an embodiment of the present invention, the inkjet material includes:
a dielectric layer;
the first coating is arranged on one side of the medium layer and comprises a first inorganic pigment and a first adhesive;
a second coating layer, wherein the second coating layer is arranged on the side, far away from the dielectric layer, of the first coating layer, and the second coating layer comprises a pearlescent material, a second inorganic pigment and a second adhesive;
a third coating disposed on a side of the second coating distal from the first coating, the third coating comprising a third inorganic pigment and a third binder.
According to the ink-jet material of the embodiment of the invention, the third coating layer ensures that visible light can reach the second coating layer, and the third inorganic pigment of the third coating layer fixes most of the dye or pigment in the ink-jet ink to the third coating layer; the pearlescent material of the second coating realizes the pearlescent effect of the product, and the second inorganic pigment of the second coating ensures the ink absorption of the second coating; the first coating layer can rapidly absorb most of moisture in the ink-jet ink, and the first inorganic pigment of the first coating layer further ensures the ink fixing effect of the ink-jet ink. The ink-jet material provided by the invention realizes the ink fixing effect on ink-jet and the pearl effect of ink-jet printing by arranging the multiple coatings, and the image does not influence the pearl effect and the pearl effect does not influence the ink absorption effect.
In addition, the method according to the above embodiment of the present invention may also have the following additional technical features:
in some embodiments of the invention, the coverage of the pearlescent material on the second coating layer is 20% to 50%.
In some embodiments of the invention, at least a portion of the second inorganic pigment is coated on the surface of the pearlescent material.
In some embodiments of the present invention, the second inorganic pigment is alumina.
In some embodiments of the present invention, the particle size of the second inorganic pigment is 0.01 to 0.5 microns, preferably 0.05 to 0.3 microns.
In some embodiments of the invention, the pearlescent material has a particle size of 1-10 microns, preferably 1-5 microns.
In some embodiments of the present invention, the pearlescent material, the second inorganic pigment and the second binder are in a mass ratio of (1-5): (12-18): (1-5).
In some embodiments of the invention, the second coating thickness is 1 to 5 microns.
In some embodiments of the invention, the first inorganic pigment particle size is 0.01 to 0.5 microns.
In some embodiments of the invention, the third inorganic pigment has a particle size of 0.01 to 0.3 microns.
In some embodiments of the present invention, the first coating thickness is 28-35 microns.
In some embodiments of the present invention, the third coating thickness is 2 to 5 micrometers.
In some embodiments of the present invention, the first inorganic pigment to first binder mass ratio is (5-25): 1.
in some embodiments of the present invention, the third inorganic pigment to third binder mass ratio is (5-25): 1.
in some embodiments of the present invention, the material of the first inorganic pigment is selected from at least one of calcium carbonate and aluminum oxide.
In some embodiments of the present invention, the material of the second inorganic pigment is alumina.
In some embodiments of the present invention, the material of the third inorganic pigment is alumina.
In some embodiments of the invention, the first binder, the second binder, and the third binder are each independently a polyvinyl alcohol solution.
In yet another aspect of the present invention, a method of making an ink jet material is presented. According to an embodiment of the invention, the method comprises:
(1) Coating a first coating liquid on one side of a dielectric layer so as to form a first coating on the dielectric layer;
(2) Coating a second coating liquid on one side of the first coating layer far away from the dielectric layer so as to form a second coating layer on one side of the first coating layer far away from the dielectric layer;
(3) And coating a third coating liquid on the side of the second coating far away from the first coating so as to form a third coating on the side of the second coating far away from the first coating.
According to the method for preparing the ink-jet material, the first coating liquid is used for coating the first coating, the second coating liquid is used for coating the second coating, and the third coating liquid is used for coating the third coating, so that the first inorganic pigment and the first adhesive are more uniformly distributed on the first coating, the pearlescent material, the second inorganic pigment and the second adhesive are more uniformly distributed on the second coating, the third inorganic pigment and the third adhesive are more uniformly distributed on the third coating, and the ink fixing effect of the third coating is further enhanced; the pearl effect of the second coating is further enhanced; the rapid absorption of most of the moisture in the ink-jet ink by the first coating is further enhanced. Therefore, the ink fixing effect of the ink-jet material on ink jet and the pearl effect of ink-jet printing are improved, the density of a printed image is improved, the pearl effect of the printed image is enhanced, and the detail expression of the image is enhanced.
In addition, the method according to the above embodiment of the present invention may further have the following technical solutions:
in some embodiments of the present invention, the first coating liquid is prepared by a method comprising:
mixing a first inorganic pigment, water, a first binder, and a first curing agent to form the first coating liquid;
optionally, the preparation method of the third coating liquid comprises:
mixing a third inorganic pigment, water, a third binder, a third acidic substance, and a third curing agent to form the third coating liquid.
In some embodiments of the present invention, the second coating liquid is prepared by a method comprising:
mixing a coupling agent, an organic solvent, a pearlescent material, water, a dispersion of a second inorganic pigment, a second curing agent, a second binder, and a second acidic substance to form the second coating liquid;
preferably, the preparation method of the second coating liquid comprises:
(a) Mixing the coupling agent, the organic solvent, the pearlescent material and the water to obtain a first mixed solution;
(b) Mixing the first mixed solution and the dispersion liquid of the second inorganic pigment to obtain a second mixed solution;
(c) Mixing the second mixed solution and the second acidic substance for reaction to obtain a third mixed solution;
(d) Mixing the third mixed solution, the second adhesive and the second curing agent to form the second coating liquid.
In some embodiments of the present invention, the mass ratio of the coupling agent, the organic solvent, the pearlescent material, the water, the dispersion of the second inorganic pigment, the second curing agent, and the second binder is (0.1 to 5): (1-10): (1-5): (1-20): (60-88): (0.02-0.1): (1-5).
In some embodiments of the present invention, the dispersion of the second inorganic pigment has a solid content of the second inorganic pigment of 10 to 30wt%.
In some embodiments of the present invention, the average particle size of the second inorganic pigment is 150 nm, and the amount of the second inorganic pigment having a particle size of greater than 220 nm does not exceed 30%.
In some embodiments of the invention, the mixing temperature in step (a) is 40-80 degrees celsius and the mixing time is 40-60 minutes.
In some embodiments of the invention, the reaction temperature in step (c) is 40-80 degrees celsius and the reaction time is 40-60 minutes.
In some embodiments of the invention, the pH of the first coating liquid is 2.0 to 4.0.
In some embodiments of the invention, the pH of the second coating liquid is 2.0 to 4.0.
In some embodiments of the invention, the pH of the third coating liquid is 2.0 to 4.0.
In some embodiments of the present invention, the second acidic substance is selected from at least one of sulfuric acid and nitric acid.
In some embodiments of the present invention, the second curing agent is at least one selected from aldehydes, boric acid, borates, and chrome.
In some embodiments of the invention, the third acidic substance is selected from at least one of sulfuric acid and nitric acid.
In some embodiments of the present invention, the first curing agent is at least one selected from aldehydes, boric acid, borates, and chrome.
In some embodiments of the present invention, the third curing agent is selected from at least one of aldehydes, boric acid, borates, and chrome alum.
In some embodiments of the present invention, the first coating liquid further comprises at least one of a dispersant, a tackifier, a fluidity modifier, a surfactant, a defoaming agent, a fluorescent brightener, and an ultraviolet absorber.
In some embodiments of the present invention, the second coating liquid further comprises at least one of a dispersant, a tackifier, a fluidity modifier, a surfactant, a defoaming agent, a fluorescent brightener, and a uv absorber
In some embodiments of the present invention, the third coating liquid further comprises at least one of a dispersant, a tackifier, a fluidity modifier, a surfactant, a defoaming agent, a fluorescent whitening agent, and an ultraviolet absorber
In a third aspect of the present invention, a printing apparatus is provided. According to an embodiment of the present invention, the printing apparatus has the inkjet material described in the above embodiment or the inkjet material manufactured by the method described in the above embodiment. Thus, the printing device has all the advantages of the ink jet material, and the description is omitted.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of an ink jet material according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method of making an ink-jet material according to one embodiment of the invention;
fig. 3 is a flowchart of a method of preparing a second coating liquid according to an embodiment of the present invention.
Reference numerals:
100-dielectric layer, 110-first coating, 120-second coating, 130-third coating.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In one aspect of the invention, an ink-jet material is provided. According to an embodiment of the present invention, referring to fig. 1, an inkjet material includes: a dielectric layer 100; a first coating layer 110, wherein the first coating layer 110 is arranged on one side of the dielectric layer 100, and the first coating layer 110 comprises a first inorganic pigment and a first adhesive; a second coating layer 120, wherein the second coating layer 120 is arranged on the side, away from the dielectric layer 100, of the first coating layer 110, and comprises a pearlescent material, a second inorganic pigment and a second adhesive; a third coating 130, the third coating 130 being disposed on a side of the second coating 120 remote from the first coating 110, the third coating comprising a third inorganic pigment and a third binder. Therefore, the ink-jet material provided by the invention realizes the ink fixing effect on ink-jet and the pearlescent effect of ink-jet printing by arranging the multilayer coating, the image does not influence the pearlescent effect, and the pearlescent effect does not influence the ink absorption effect.
Wherein the third coating layer ensures visible light to reach the second coating layer, and the third inorganic pigment of the third coating layer fixes most of the dye or pigment in the inkjet ink to the third coating layer. The pearlescent material of the second coating realizes the pearlescent effect of the product, and the second inorganic pigment of the second coating ensures the ink absorption of the second coating; the first coating layer can rapidly absorb most of moisture in the ink-jet ink, and the first inorganic pigment of the first coating layer further ensures the ink fixing effect of the ink-jet ink.
According to some embodiments of the present invention, the first inorganic pigment particle size is 0.01 to 0.5 μm, and thus, limiting the first inorganic pigment particle size to the above range ensures that the first coating layer can absorb most of moisture in the inkjet, thereby ensuring the quality of the printed product and the safety of the printing process, and avoiding a decrease in the ink absorption capacity of the first coating layer.
According to further embodiments of the present invention, the thickness of the first coating layer is 28 to 35 μm, and thus, the thickness of the first coating layer is limited to the above range, which ensures that the first coating layer can rapidly absorb most of moisture in the inkjet, thereby ensuring the quality of the printed product and the safety of the printing process, and avoiding the decrease of the ink absorption capacity of the first coating layer.
According to still other embodiments of the present invention, the ratio of the first inorganic pigment to the first binder is (5-25): 1, thereby, defining the mass ratio of the first inorganic pigment to the first binder within the above range ensures that the first coating layer has good porosity. The inventor finds that if the mass ratio of the first inorganic pigment to the first binder is too small, the porosity of the first coating is low, so that the ink absorption performance of the first coating is reduced, and if the mass ratio of the first inorganic pigment to the first binder is too large, the first coating has the problems of poor adhesion, bending resistance, easy cracking and the like.
In the embodiment of the present invention, the kind of the material of the first inorganic pigment is not particularly limited, and as a specific example, the material of the first inorganic pigment is selected from at least one of calcium carbonate and alumina; similarly, the kind of the first binder is not particularly limited, and as a specific example, the first binder is a polyvinyl alcohol solution.
According to still other embodiments of the present invention, the coverage rate of the pearlescent material on the second coating layer is 20% to 50%, and thus, by limiting the coverage rate of the pearlescent material on the second coating layer to the above range, the ordered arrangement of pearlescent layers has a proper aperture ratio in the second coating layer, so that the second coating layer provides a good pearlescent effect, and simultaneously, further ensures the permeation channel of the ink, and further inhibits the diffusion phenomenon caused by the downward permeation of the ink when the ink is printed by the high-density ink and meets the pearlescent material. The inventors found that if the coverage of the pearlescent material on the second coating layer is too small, the pearlescent effect of the second coating layer cannot be secured, resulting in poor pearlescent effect of the printed product. If the covering rate of the pearlescent material on the second coating is too large (namely, the aperture ratio of the pearlescent layer in the second coating is too small), the permeation channel of the ink cannot be ensured, the ink absorption performance of the second coating is affected, the ink absorption of the second coating is insufficient, and the density of the printed image is reduced; meanwhile, the diffusion phenomenon caused by the fact that ink permeates downwards and meets the pearlescent material when the high-density ink is printed can be caused, and therefore the detailed expression of the image is reduced. It is understood that the larger the covering ratio of the pearlescent material on the second coating layer, the smaller the opening ratio of the pearlescent layer in the second coating layer, and the smaller the covering ratio of the pearlescent material on the second coating layer, the larger the opening ratio of the pearlescent layer in the second coating layer. It should be explained that the coverage of the pearlescent material on the second coating layer refers to the percentage of the area of the orthographic projection of the pearlescent material on the second coating layer to the total area of the second coating layer.
According to still other embodiments of the present invention, at least a portion of the second inorganic pigment is coated on the surface of the pearlescent material, so as to further improve the detail expression of the printed product, and ensure that when the inkjet amount in the inkjet process reaches the maximum, the pearlescent material still does not affect the details of the image. The inventors have found that if the surface of the pearlescent material is not coated with the second inorganic pigment, the printed product may be halated, thereby reducing the density of the printed image and reducing the detail expression of the image.
According to further embodiments of the present invention, the particle size of the second inorganic pigment is 0.01 to 0.5 μm, thereby, the particle size of the second inorganic pigment is limited within a range, which ensures the coating effect of the second inorganic pigment on the surface of the pearlescent material, so that the second coating layer provides a good pearlescent effect while maximally inhibiting the ink diffusion effect at a large ink amount; while further ensuring the ink receptive effect of the second coating. Preferably, the particle size of the second inorganic pigment is 0.05 to 0.3 μm.
According to further embodiments of the present invention, the particle size of the pearlescent material is 1 to 10 μm, whereby the particle size of the pearlescent material is limited to the above range, ensuring good pearlescent effect of the printed product and avoiding reduction of the ink absorption capacity of the second coating layer. The inventor finds that if the granularity of the pearlescent material is too small, the pearlescent effect of the printed product is not obvious, and if the granularity of the pearlescent material is too large, the ink absorption effect of the second coating layer is seriously influenced, so that the density of the printed image is remarkably reduced and the detail expression of the image is remarkably reduced. Preferably, the pearlescent material has a particle size of 1-5 microns.
According to still further embodiments of the present invention, the pearlescent material, the second inorganic pigment and the second binder are in a mass ratio of (1-5): (12-18): (1-5), whereby the porosity of the pearlescent layer of the second coating layer is ensured by limiting the mass ratio of the pearlescent material, the second inorganic pigment and the second binder to the above range. The inventor finds that if the second binder ratio of the mass ratio of the pearlescent material, the second inorganic pigment and the second binder is too large, the porosity of the second coating is reduced, which affects the ink absorption and fixation effect of the second coating, thereby causing the detail of the picture to be reduced, and if the second binder ratio of the mass ratio of the pearlescent material, the second inorganic pigment and the second binder is too small, the appearance defect of the second coating may occur, thereby affecting the yield.
According to further embodiments of the present invention, the thickness of the second coating layer is 1 to 5 μm, whereby the thickness of the second coating layer is limited to the above range, ensuring good pearl effects of the printed product and avoiding a decrease in the ink absorption capacity of the second coating layer. The inventor finds that if the second coating is too thick, the pearlescent material in the second coating may overlap, resulting in a reduction in the ink-receptive channels of the second coating, thereby reducing the ink-receptive properties of the second coating, and if the second coating is too thin, the pearlescent material in the second coating is too little, thereby reducing or eliminating the pearlescent effect.
In the embodiment of the present invention, the kind of the material of the second inorganic pigment is not particularly limited, and as a specific example, the second inorganic pigment is alumina. Likewise, the kind of the second binder is not particularly limited, and as a specific example, the second binder is a polyvinyl alcohol solution.
According to still further embodiments of the present invention, the third inorganic pigment has a particle size of 0.01 to 0.3 μm, and thus, the particle size of the third inorganic pigment is limited to the above range, thereby further ensuring the penetration of visible light while fixing most of the dye or pigment in the inkjet ink to the third coating layer, thereby significantly increasing the density of the printed image and significantly increasing the detailed expression of the image. The inventors have found that if the particle size of the third inorganic pigment is too large, there is a hindrance to the transmission of visible light, which in turn affects the pearl effect of the printed product.
According to further embodiments of the present invention, the thickness of the third coating is 2-5 μm, so that the thickness of the third coating is limited within the above range, which ensures that the third coating has good ink fixing performance and avoids affecting the visible light penetration, thereby affecting the pearly luster effect of the printed product.
According to still other embodiments of the present invention, the mass ratio of the third inorganic pigment to the third binder is (5-25): 1, thereby, the third inorganic pigment to third binder mass ratio is defined within a range, further ensuring that the third coating has good porosity. The inventor finds that if the mass ratio of the third inorganic pigment to the third binder is too small, the porosity of the third coating is low, so that the ink fixing capability of the third coating is poor, and if the mass ratio of the third inorganic pigment to the third binder is too large, the third coating has the problems of poor adhesion, bending resistance, easy cracking and the like.
In the embodiment of the present invention, the kind of the material of the third inorganic pigment is not particularly limited, and as a specific example, the material of the third inorganic pigment is alumina; likewise, the kind of the third binder is not particularly limited, and as a specific example, the third binder is a polyvinyl alcohol solution.
According to the ink jet material of the embodiment, the third coating layer of the invention ensures that visible light can reach the second coating layer, and the third inorganic pigment of the third coating layer fixes most of the dye or pigment in the ink jet ink to the third coating layer; the pearlescent material of the second coating realizes the pearlescent effect of the product, and the second inorganic pigment of the second coating ensures the ink absorption of the second coating; the first coating absorbs most of moisture in the ink-jet ink rapidly, and the first inorganic pigment of the first coating further ensures the ink fixing effect of the ink-jet ink. The ink-jet material provided by the invention realizes the ink fixing effect on ink-jet and the pearlescent effect of ink-jet printing by arranging the multilayer coating, the image does not influence the pearlescent effect, and the detailed expression of the image is not interfered by the pearlescent effect.
In yet another aspect of the present invention, and with reference to FIG. 2, a method of making an ink-jet material is provided. According to an embodiment of the invention, the method comprises:
s100: coating a first coating layer with a first coating liquid
In this step, a first coating liquid is applied to one side of the dielectric layer to form a first coating layer on the dielectric layer.
According to some embodiments of the present invention, a method of preparing a first coating liquid includes:
the first inorganic pigment, water, a first binder, and a first curing agent are mixed to form a first coating liquid.
Preferably, the preparation method of the first coating liquid includes:
mixing the first inorganic pigment with water to obtain a first inorganic pigment mixed solution;
and mixing the first inorganic pigment mixed solution, the first adhesive and the first curing agent to obtain a first coating solution.
According to further embodiments of the present invention, the third coating liquid has a pH of 2.0 to 4.0.
In the embodiment of the present invention, the specific kind of the first curing agent is not particularly limited, and as some specific examples, the first curing agent is selected from at least one of aldehyde compounds, boric acid, borate, and chrome alum.
According to still other embodiments of the present invention, the first coating liquid further includes at least one of a dispersant, a tackifier, a fluidity modifier, a surfactant, an antifoaming agent, a fluorescent brightener and an ultraviolet absorber, wherein the dispersant is used for better dispersing the first inorganic pigment, the tackifier is used for controlling the viscosity of the first coating liquid, the fluidity modifier is used for improving the appearance of the first coating liquid, the surfactant is used for controlling the surface tension, so as to facilitate the first coating liquid coating process, the antifoaming agent is used for eliminating bubbles generated during the preparation process, the fluorescent brightener is used for increasing the whiteness of the printed product, and the ultraviolet absorber is used for absorbing ultraviolet and preventing the printed product from yellowing.
S200: coating the second coating layer with the second coating liquid
In this step, a second coating liquid is applied to the side of the first coating layer remote from the dielectric layer to form a second coating layer on the side of the first coating layer remote from the dielectric layer.
According to further embodiments of the present invention, a method for preparing the second coating liquid includes:
a coupling agent, an organic solvent, a pearlescent material, water, a dispersion of a second inorganic pigment, a second curing agent, a second binder, and a second acidic substance are mixed to form a second coating liquid.
According to still other embodiments of the present invention, referring to fig. 3, a method for preparing a second coating liquid includes:
(a) The coupling agent, the organic solvent, the pearlescent material and water are mixed to obtain a first mixed solution, so that the coupling agent and the pearlescent material firstly undergo a primary reaction, the second inorganic pigment is favorably coated on the surface of the pearlescent material, and the pearlescent material is enabled to obtain the effect of easier dispersion and arrangement.
(b) And mixing the first mixed solution and the dispersion liquid of the second inorganic pigment to obtain a second mixed solution, so that the surface of the pearlescent material is coated with the second inorganic pigment through the coupling agent.
(c) And mixing and reacting the second mixed solution and the second acidic substance to obtain a third mixed solution, so that the thickness of the second inorganic pigment coated on the surface of the pearlescent material and the aggregation size of the second inorganic pigment can be controlled.
(d) And mixing the third mixed solution, the second adhesive and the second curing agent to form a second coating solution, thereby being beneficial to better achieving the purpose of coating a second coating by the second coating solution.
According to still further embodiments of the present invention, the mass ratio of the coupling agent, the organic solvent, the pearlescent material, water, the dispersion of the second inorganic pigment, the second curing agent and the second binder is (0.1-5): (1-10): (1-5): (1-20): (60-88): (0.02-0.1): (1-5), therefore, the mass ratio of the coupling agent, the organic solvent, the pearlescent material, the water, the dispersion liquid of the second inorganic pigment, the second curing agent and the second adhesive is limited in the range, the distribution uniformity of the pearlescent material in the second coating liquid is further ensured, the connectivity and the bending resistance of the second coating obtained by drawing the second coating liquid are further improved, the ink absorption performance of the second coating obtained by drawing the second coating liquid is further enhanced, and the second coating liquid can meet the fluid performance required by coating equipment.
According to still other embodiments of the present invention, the solid content of the second inorganic pigment in the dispersion of the second inorganic pigment is 10 to 30wt%, so that the solid content of the second inorganic pigment in the dispersion of the second inorganic pigment is limited to the above range, thereby ensuring that the second coating has good ink absorption performance, and further ensuring that the second inorganic pigment can be uniformly covered on the pearlescent material, thereby achieving both pearlescent effect of the printed product and better image detail expression.
According to still other embodiments of the present invention, the average particle size of the second inorganic pigment is 150 nm, and the number of the second inorganic pigment having the particle size of more than 220 nm does not exceed 30%, thereby ensuring the covering effect of the second inorganic pigment on the surface of the pearlescent material, allowing the second coating layer to maximally suppress the ink spreading effect at a large ink amount while providing a good pearlescent effect, and further ensuring the ink absorption effect of the second coating layer.
According to still other embodiments of the present invention, the mixing temperature in step (a) is 40-80 ℃ and the mixing time is 40-60 minutes, thereby further controlling the hydrolysis degree of the coupling agent and accelerating the actual production process.
According to still other embodiments of the present invention, the reaction temperature in step (c) is 40-80 ℃ and the reaction time is 40-60 minutes, thereby further controlling the pH of the second coating solution to facilitate the actual production process.
According to further embodiments of the present invention, the second coating liquid has a pH of 2.0 to 4.0.
In the embodiment of the present invention, the kind of the second acidic substance is not particularly limited, and as a specific example, the second acidic substance is selected from at least one of sulfuric acid and nitric acid.
In embodiments of the invention, the second curing agent functions to effect cured crosslinking of the second coating. The specific kind of the second curing agent is not particularly limited, and as some specific examples, the second curing agent is selected from at least one of aldehyde compounds, boric acid, borate, and chrome alum.
According to further embodiments of the present invention, the second coating liquid further includes at least one of a dispersant, a tackifier, a lubricant, a fluidity modifier, a surfactant, an antifoaming agent, a water repellent, a mold release agent, a fluorescent whitening agent, an ultraviolet absorber, and an antioxidant. The dispersant, tackifier, lubricant, fluidity modifier, surfactant, defoamer, water repellent, mold release agent, fluorescent brightener, ultraviolet ray, absorbent and antioxidant in the third coating liquid perform the same functions as in the first coating liquid, and are not described again.
S300: coating a third coating layer by using a third coating liquid
In this step, a third coating liquid is applied to the side of the second coating layer remote from the first coating layer, so as to form a third coating layer on the side of the second coating layer remote from the first coating layer.
According to still other embodiments of the present invention, a method for preparing the third coating liquid includes:
a third inorganic pigment, water, a third binder, a third acidic substance, and a third curing agent are mixed to form a third coating liquid.
Preferably, the preparation method of the third coating liquid comprises:
mixing the third inorganic pigment with water to obtain a third inorganic pigment mixed solution;
and mixing the third inorganic pigment mixed solution, the third acidic substance, the third adhesive and the third curing agent to obtain the first coating solution.
According to further embodiments of the present invention, the third coating liquid has a pH of 2.0 to 4.0.
In the embodiment of the present invention, the kind of the third acidic substance is not particularly limited, and as a specific example, the third acidic substance is selected from at least one of sulfuric acid and nitric acid.
In embodiments of the invention, the third curing agent functions to effect cured crosslinking of the third coating. The specific kind of the third curing agent is not particularly limited, and as some specific examples, the third curing agent is selected from at least one of aldehyde compounds, boric acid, borate, and chrome alum.
According to further embodiments of the present invention, the third coating liquid further includes at least one of a dispersant, a tackifier, a lubricant, a fluidity modifier, a surfactant, an antifoaming agent, a water repellent, a mold release agent, a fluorescent whitening agent, an ultraviolet absorber, and an antioxidant. The dispersant, tackifier, lubricant, fluidity modifier, surfactant, defoamer, water repellent, mold release agent, fluorescent brightener, ultraviolet ray, absorbent and antioxidant in the third coating liquid perform the same functions as in the first coating liquid, and are not described again.
In the embodiment of the present invention, the crushing manner of the first inorganic pigment is not particularly limited, and as a specific example, the crushing manner of the first inorganic pigment is selected from at least one of crusher crushing, bowl grinding, and ball mill grinding; likewise, the crushing manner of the second inorganic pigment is not particularly limited, and as a specific example, the crushing manner of the second inorganic pigment is selected from at least one of pulverizer crushing, bowl milling, and ball milling; also, the crushing manner of the pearlescent material is not particularly limited, and as a specific example, the crushing manner of the pearlescent material is at least one selected from the group consisting of pulverization by a pulverizer, grinding by a mortar mill and ball milling by a ball mill; likewise, the crushing manner of the third inorganic pigment is not particularly limited, and as a specific example, the crushing manner of the third inorganic pigment is selected from at least one of crushing by a crusher, bowl milling, and ball milling by a ball mill.
In the embodiment of the present invention, the apparatus for coating the first coating liquid is not particularly limited, and as a specific example, the apparatus for coating the first coating liquid is selected from at least one of a blade coater, an air knife coater, a roll coater, a curtain coater, a bar coater, a gravure coater, and a die coater; also, the apparatus for coating with the second coating liquid is not particularly limited, and as a specific example, the apparatus for coating with the second coating liquid is selected from at least one of a blade coater, an air knife coater, a roll coater, a curtain coater, a bar coater, a gravure coater, and a die coater; also, the apparatus for coating the third coating liquid is not particularly limited, and as a specific example, the apparatus for coating the third coating liquid is selected from at least one of a blade coater, an air knife coater, a roll coater, a curtain coater, a bar coater, a gravure coater, and a die coater.
According to the method for preparing the inkjet material of the embodiment of the invention, the first coating liquid is used for coating the first coating layer, the second coating liquid is used for coating the second coating layer, and the third coating liquid is used for coating the third coating layer, so that the first inorganic pigment and the first adhesive are more uniformly distributed on the first coating layer, the pearlescent material, the second inorganic pigment and the second adhesive are more uniformly distributed on the second coating layer, the third inorganic pigment and the third adhesive are more uniformly distributed on the third coating layer,
the ink fixing effect of the third coating is further enhanced; the pearl effect of the second coating is further enhanced; the rapid absorption of most of the moisture in the ink-jet ink by the first coating is further enhanced. Therefore, the ink fixing effect of the ink-jet material on ink jet and the pearl effect of ink-jet printing are improved, the density of a printed image is improved, the pearl effect of the printed image is enhanced, and the detail expression of the image is enhanced.
In a third aspect of the present invention, a printing apparatus is presented. According to an embodiment of the present invention, a printing apparatus has the inkjet material of the above embodiment or the inkjet material manufactured by the method of the above embodiment. Thus, the printing device has all the advantages of ink jet materials, which are not described in detail herein.
The invention will now be described with reference to specific examples, which are intended to be illustrative only and not to be limiting in any way.
Example 1
(1) Dispersing and mixing 600 g of water and 300 g of nano alumina in a high-shear disperser with the rotation speed of 8000 rpm and the dispersion time of 20 minutes to form an alumina solution, and mixing sulfuric acid with the alumina solution to adjust the pH value to 3.5 to obtain the nano alumina dispersion solution.
(2) And (3) mixing 100 g of nano-alumina dispersion solution with 11 g of PVA217 at the mixing temperature of 45 ℃ and the mass concentration of the PVA217 of 10%, adding 5 ml of surfactant 1283 at the mass concentration of 1283 of 20% for 10 minutes, and adding 3g of boric acid for mixing, wherein the mass concentration of the boric acid is 2% and the mixing time is 10 minutes, so as to obtain the third coating liquid.
(3) Uniformly mixing 0.5 g of 560 coupling agent and 10 g of polyvinyl alcohol solution, adding the mixture into 5 g of pearl powder, mixing for 5 minutes, then adding 20 g of deionized water, and stirring at the stirring speed of 200 revolutions per minute, the stirring temperature of 40 ℃ and the stirring time of 60 minutes to obtain a first mixed solution; mixing 64.5 grams of the boehmite dispersion with the first mixture to form a second mixture, wherein the boehmite has an average particle size of 150 nm and the number of particles greater than 220 nm is no more than 30%; and mixing the second mixed solution with nitric acid at 40 ℃ for 1 hour, so as to adjust the pH value to 2, thereby obtaining a third mixed solution.
(4) And mixing 15.3 g of the third mixed solution, 5.3 g of PVA217 and 303 g of water, wherein the mass concentration of the PVA217 is 10%, adding 6 g of FS-31, mixing for 10 minutes, and adding 26 g of boric acid, wherein the mass concentration of the boric acid is 2%, thereby obtaining a second coating solution.
(5) Dispersing and mixing 600 g of water and 300 g of nano-alumina in a sand mill, wherein the rotation speed of the sand mill is 8000 rpm, and the dispersing time is 20 minutes to obtain a nano-calcium carbonate dispersion solution.
(6) 100 g of nano calcium carbonate dispersion solution is mixed with 15 g of PVA217, the mass concentration of the PVA217 is 10%, the mixing temperature is 45 ℃, the mixing time is 20 minutes, 15 ml of surfactant 1283 is added for mixing, the mass concentration of the surfactant 1283 is 20%, the mixing time is 10 minutes, 4 g of boric acid is added for mixing, the mass concentration of the boric acid is 2%, and the mixing time is 10 minutes, so that the first coating liquid is obtained.
(7) And (3) respectively and sequentially coating a first coating liquid, a second coating liquid and a third coating liquid on 260 g of plastic-coated paper base by using a quantitative plane coater, and drying at 100 ℃, wherein the thickness of the coating after the first coating is dried is 28 micrometers, the thickness of the coating after the second coating is dried is 1 micrometer, and the thickness of the coating after the third coating is dried is 5 micrometers.
Example 2
(1) Dispersing and mixing 600 g of water and 300 g of nano alumina in a high-shear disperser with the rotation speed of 8000 rpm and the dispersion time of 20 minutes to form an alumina solution, and mixing sulfuric acid and the alumina solution to adjust the pH value to be 3.5 to obtain the nano alumina dispersion solution.
(2) And (3) mixing 100 g of nano-alumina dispersion solution with 11 g of PVA217 at the mixing temperature of 45 ℃ and the mass concentration of the PVA217 of 10%, adding 5 ml of surfactant 1283 at the mass concentration of 1283 of 20% for 10 minutes, and adding 3g of boric acid for mixing, wherein the mass concentration of the boric acid is 2% and the mixing time is 10 minutes, so as to obtain the third coating liquid.
(3) Uniformly mixing 1 g of 560 coupling agent and 10 g of polyvinyl alcohol solution, adding the mixture into 5 g of pearl powder, mixing for 5 minutes, then adding 20 g of deionized water, and stirring at the stirring speed of 200 revolutions per minute, the stirring temperature of 40 ℃ and the stirring time of 60 minutes to obtain a first mixed solution; mixing 64 g of boehmite dispersion with the first mixture, wherein the boehmite has an average particle size of 150 nm and the proportion of particles greater than 220 nm is not more than 30%, so as to form a second mixture; and mixing the second mixed solution with nitric acid at 40 ℃ for 1 hour, so as to adjust the pH value to 2, thereby obtaining a third mixed solution.
(4) 15.3 g of the third mixture, 11.2 g of PVA217, and 153 g of water were mixed, the mass concentration of PVA217 was 10%, 4 g of FS-31 was further added, the mass concentration of FS-31 was 10%, the mixing time was 10 minutes, and 50 g of boric acid was further added, and the mixture was mixed, the mass concentration of boric acid was 2%, thereby obtaining a second coating liquid.
(5) Dispersing and mixing 600 g of water and 300 g of nano-alumina in a sand mill, wherein the rotating speed of the sand mill is 8000 revolutions per minute, and the dispersing time is 20 minutes, so as to obtain the nano-calcium carbonate dispersion solution.
(6) 100 g of nano calcium carbonate dispersion solution is mixed with 15 g of PVA217, the mass concentration of the PVA217 is 10%, the mixing temperature is 45 ℃, the mixing time is 20 minutes, 15 ml of surfactant 1283 is added for mixing, the mass concentration of the surfactant 1283 is 20%, the mixing time is 10 minutes, 4 g of boric acid is added for mixing, the mass concentration of the boric acid is 2%, and the mixing time is 10 minutes, so that the first coating liquid is obtained.
(7) And (3) respectively and sequentially coating a first coating liquid, a second coating liquid and a third coating liquid on 260 g of plastic-coated paper base by using a quantitative plane coater, and drying at 100 ℃, wherein the thickness of the coating after the first coating is dried is 30 micrometers, the thickness of the coating after the second coating is dried is 5 micrometers, and the thickness of the coating after the third coating is dried is 5 micrometers.
Example 3
(1) Dispersing and mixing 600 g of water and 300 g of nano alumina in a high-shear disperser with the rotation speed of 8000 rpm and the dispersion time of 20 minutes to form an alumina solution, and mixing sulfuric acid and the alumina solution to adjust the pH value to be 3.5 to obtain the nano alumina dispersion solution.
(2) And (3) mixing 100 g of nano-alumina dispersion solution with 11 g of PVA217 at the mixing temperature of 45 ℃ and the mass concentration of the PVA217 of 10%, adding 5 ml of surfactant 1283 at the mass concentration of 1283 of 20% for 10 minutes, and adding 3g of boric acid for mixing, wherein the mass concentration of the boric acid is 2% and the mixing time is 10 minutes, so as to obtain the third coating liquid.
(3) Uniformly mixing 0.1 g of 560 coupling agent and 5 g of polyvinyl alcohol solution, adding the mixture into 1 g of pearl powder, mixing for 5 minutes, then adding 5.9 g of deionized water, and stirring at the stirring speed of 200 revolutions per minute, the stirring temperature of 40 ℃ and the stirring time of 60 minutes to obtain a first mixed solution; mixing 88 g of boehmite dispersion with the first mixed solution, wherein the boehmite has an average particle size of 150 nm and the proportion of particles larger than 220 nm is not more than 30%, so as to form a second mixed solution; and mixing the second mixed solution with nitric acid at the temperature of 40 ℃ for 1 hour so as to adjust the pH value to 2 to obtain a third mixed solution.
(4) 15.3 g of the third mixture, 11.2 g of PVA217, and 153 g of water were mixed, the mass concentration of PVA217 was 10%, 4 g of FS-31 was further added, the mass concentration of FS-31 was 10%, the mixing time was 10 minutes, and 50 g of boric acid was further added, and the mixture was mixed, the mass concentration of boric acid was 2%, thereby obtaining a second coating liquid.
(5) Dispersing and mixing 600 g of water and 300 g of nano-alumina in a sand mill, wherein the rotating speed of the sand mill is 8000 revolutions per minute, and the dispersing time is 20 minutes, so as to obtain the nano-calcium carbonate dispersion solution.
(6) 100 g of nano calcium carbonate dispersion solution is mixed with 15 g of PVA217, the mass concentration of the PVA217 is 10%, the mixing temperature is 45 ℃, the mixing time is 20 minutes, 15 ml of surfactant 1283 is added for mixing, the mass concentration of the surfactant 1283 is 20%, the mixing time is 10 minutes, 4 g of boric acid is added for mixing, the mass concentration of the boric acid is 2%, and the mixing time is 10 minutes, so that the first coating liquid is obtained.
(7) And (3) respectively and sequentially coating a first coating liquid, a second coating liquid and a third coating liquid on 260 g of plastic-coated paper base by using a quantitative plane coater, and drying at 100 ℃, wherein the thickness of the coating after the first coating is dried is 30 micrometers, the thickness of the coating after the second coating is dried is 5 micrometers, and the thickness of the coating after the third coating is dried is 2 micrometers.
Comparative example 1
(1) Dispersing and mixing 600 g of water and 300 g of nano alumina in a high-shear disperser with the rotation speed of 8000 rpm and the dispersion time of 20 minutes to form an alumina solution, and mixing sulfuric acid with the alumina solution to adjust the pH value to be 3.5 to obtain the nano alumina dispersion solution.
(2) And (2) mixing 100 g of nano alumina dispersion solution with 11 g of PVA217 at a mixing temperature of 45 ℃ and a mass concentration of 10% of PVA217, adding 5 ml of 1283, mixing for 10 minutes, adding 3g of boric acid at a mass concentration of 2% and mixing for 10 minutes, and thus obtaining the upper ink fixing layer coating solution.
(3) Mixing 100 g of nano calcium carbonate dispersion solution and 0.5 g of pearl powder for 10 minutes, adding 11 g of PVA217 for mixing, wherein the mass concentration of the PVA217 is 10%, the mixing temperature is 45 ℃, the mixing time is 20 minutes, adding 5 ml of surfactant 1283 for mixing, the mass concentration of the surfactant 1283 is 20%, the mixing time is 10 minutes, adding 3g of boric acid for mixing, the mass concentration of the boric acid is 2%, and the mixing time is 10 minutes, thereby obtaining the lower ink absorption layer coating liquid.
(4) Coating the lower-layer ink absorption layer coating liquid on 260 g of plastic-coated paper base by using a wire rod, coating the upper-layer ink fixing layer coating liquid on the lower-layer ink absorption layer far away from the plastic-coated paper base, drying at 100 ℃, wherein the thickness of the coating after the lower-layer ink absorption layer is dried is 15 micrometers, and the thickness of the coating after the upper-layer ink fixing layer is dried is 20 micrometers.
Comparative example 2
(1) 300 g of nano alumina is added into 600 g of water and dispersed for 20 minutes under a high-shear disperser (more than 8000 turns), and then the pH value is adjusted to be between 3.5 by using nitric acid, so as to obtain the nano alumina dispersion.
(2) 100 g of nano alumina dispersion is taken, 11 g of PVA217 (10%) is added at 45 ℃ and stirred for 20 minutes, 5 ml of surfactant 1283 (20%) is added and stirred for 10 minutes, and then 3g of boric acid (2%) is added and stirred for 10 minutes, thus obtaining the upper ink-absorbing layer coating liquid.
(3) 100 g of nano alumina dispersoid is taken, 2 g of pearl powder is added, the mixture is stirred for 10 minutes, 11 g of PVA217 (10%) is added at 45 ℃, the mixture is stirred for 20 minutes, 5 ml of surfactant 1283 (20%) is added, the mixture is stirred for 10 minutes, 3g of boric acid (2%) is added, and the mixture is stirred for 10 minutes to obtain the lower ink absorption layer coating liquid.
(4) And (3) respectively and sequentially coating the ink fixing layer coating liquid and the ink absorption layer coating liquid on 260 g of plastic-coated paper base by using a silk rod, and drying at 100 ℃, wherein the thickness of the coating layer after the lower layer is dried is 25 micrometers, and the thickness of the coating layer after the upper layer is dried is 5 micrometers.
The test method comprises the following steps:
(1) Ink absorption time
A line 3mm wide and 15cm long was printed with cyan and black on the recording body using an ink jet printer (MJ-700V 2C, manufactured by Seiko Epson). After printing, the line is wiped by fingers immediately, and the line is qualified if no ink is on the hand and is unqualified if ink is on the hand. The ink volume at this time was about 0.4. Mu.l/cm 2 。
(2) Surface gloss
The reflectance of 60 degrees of incident light and reflected light was obtained for the recording body using Nippon Denshoku Kogyo co., ltd.
(3) Color density
Printing 5cm on a recording medium by the printer of (1) 2 Cyan (C), magenta (M), yellow (Y) and black (B). Measurement of reflection density with a Macbeth densitometer (TR-927) prints using the no color control conditions.
TABLE 1
From the above comparison, it can be seen that the ink-jet consumable material prepared in comparative example 1 has acceptable ink absorption time but significantly reduced surface gloss and color density compared to the ink-jet consumable materials prepared in examples 1, 2 and 3, and the ink-jet consumable material prepared in comparative example 2 has unacceptable ink absorption time and significantly reduced surface gloss and color density compared to the ink-jet consumable materials prepared in examples 1, 2 and 3.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. An inkjet material comprising:
a dielectric layer;
the first coating is arranged on one side of the dielectric layer and comprises a first inorganic pigment and a first binder;
a second coating layer, wherein the second coating layer is arranged on the side, far away from the dielectric layer, of the first coating layer, and the second coating layer comprises a pearlescent material, a second inorganic pigment and a second adhesive;
a third coating disposed on a side of the second coating distal from the first coating, the third coating comprising a third inorganic pigment and a third binder.
2. The inkjet material of claim 1 wherein the coverage of said pearlescent material on said second coating layer is from 20% to 50%;
optionally, at least a portion of the second inorganic pigment is coated on the surface of the pearlescent material;
optionally, the second inorganic pigment is alumina;
optionally, the particle size of the second inorganic pigment is from 0.01 to 0.5 microns, preferably from 0.05 to 0.3 microns;
optionally, the pearlescent material has a particle size of 1-10 microns, preferably 1-5 microns;
optionally, the mass ratio of the pearlescent material, the second inorganic pigment and the second binder is (1-5): (12-18): (1-5);
optionally, the second coating thickness is 1-5 microns.
3. The inkjet material of claim 1, wherein the first inorganic pigment particle size is 0.01-0.5 micron;
optionally, the third inorganic pigment has a particle size of 0.01 to 0.3 microns;
optionally, the first coating thickness is 28-35 microns;
optionally, the third coating thickness is 2 to 5 microns;
optionally, the mass ratio of the first inorganic pigment to the first binder is (5-25): 1;
optionally, the third inorganic pigment to third binder mass ratio is (5-25): 1.
4. the inkjet material according to claim 1, wherein the material of the first inorganic pigment is selected from at least one of calcium carbonate and alumina;
optionally, the material of the second inorganic pigment is alumina;
optionally, the material of the third inorganic pigment is alumina;
optionally, the first binder, the second binder, and the third binder are each independently a polyvinyl alcohol solution.
5. A method of preparing the inkjet material of any one of claims 1 to 4, comprising:
(1) Coating a first coating liquid on one side of a dielectric layer so as to form a first coating on the dielectric layer;
(2) Coating a second coating liquid on the side, far away from the dielectric layer, of the first coating so as to form a second coating on the side, far away from the dielectric layer, of the first coating;
(3) And coating a third coating liquid on the side of the second coating far away from the first coating so as to form a third coating on the side of the second coating far away from the first coating.
6. The method according to claim 5, wherein the first coating liquid is prepared by a method comprising:
mixing a first inorganic pigment, water, a first binder, and a first curing agent to form the first coating liquid;
optionally, the preparation method of the third coating liquid comprises:
mixing a third inorganic pigment, water, a third binder, a third acidic substance, and a third curing agent to form the third coating liquid.
7. The method according to claim 5, wherein the second coating liquid is prepared by a method comprising:
mixing a coupling agent, an organic solvent, a pearlescent material, water, a dispersion of a second inorganic pigment, a second curing agent, a second binder, and a second acidic substance to form the second coating liquid;
preferably, the preparation method of the second coating liquid comprises:
(a) Mixing the coupling agent, the organic solvent, the pearlescent material and the water to obtain a first mixed solution;
(b) Mixing the first mixed solution and the dispersion liquid of the second inorganic pigment to obtain a second mixed solution;
(c) Mixing the second mixed solution and the second acidic substance for reaction to obtain a third mixed solution;
(d) Mixing the third mixed solution, the second adhesive and the second curing agent to form the second coating liquid.
8. The method according to claim 7, characterized in that the mass ratio of the coupling agent, the organic solvent, the pearlescent material, the water, the dispersion of the second inorganic pigment, the second curing agent and the second binder is (0.1-5): (1-10): (1-5): (1-20): (60-88): (0.02-0.1): (0.5-5);
optionally, the second inorganic pigment has a solid content of 10 to 30wt% in the dispersion of the second inorganic pigment;
optionally, the second inorganic pigment has an average particle size of 150 nm and the number of particle sizes of the second inorganic pigment greater than 220 nm does not exceed 30%;
optionally, the mixing temperature in step (a) is 40-80 ℃ and the mixing time is 40-60 minutes;
optionally, the reaction temperature in step (c) is 40-80 ℃ and the reaction time is 40-60 minutes;
optionally, the pH of the first coating liquid is 2.0-4.0;
optionally, the pH of the second coating liquid is 2.0-4.0;
optionally, the third coating liquid has a pH of 2.0 to 4.0;
optionally, the second acidic substance is selected from at least one of sulfuric acid and nitric acid;
optionally, the second curing agent is at least one selected from aldehydes, boric acid, borates, and chrome alum.
9. The method of claim 6, wherein, optionally, the third acidic substance is selected from at least one of sulfuric acid and nitric acid;
optionally, the first curing agent is selected from at least one of aldehydes, boric acid, borate and chrome alum;
optionally, the third curing agent is selected from at least one of aldehydes, boric acid, borate and chrome alum;
optionally, the first coating liquid further comprises at least one of a dispersant, a tackifier, a fluidity modifier, a surfactant, a defoaming agent, a fluorescent whitening agent and an ultraviolet absorber;
optionally, the second coating liquid further comprises at least one of a dispersant, a tackifier, a fluidity modifier, a surfactant, a defoaming agent, a fluorescent whitening agent and an ultraviolet absorber;
optionally, the third coating liquid further comprises at least one of a dispersant, a tackifier, a fluidity modifier, a surfactant, a defoaming agent, a fluorescent whitening agent, and an ultraviolet absorber.
10. A printing apparatus comprising the inkjet material according to any one of claims 1 to 4 or the inkjet material produced by the method according to any one of claims 5 to 9.
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