CN115466130B - Diffusion preventing method for ceramic ink-jet printing, diffusion preventing agent and green body powder - Google Patents
Diffusion preventing method for ceramic ink-jet printing, diffusion preventing agent and green body powder Download PDFInfo
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Abstract
The invention relates to a diffusion preventing method for ceramic ink-jet printing, a diffusion preventing agent and green body powder. The diffusion prevention method comprises the following steps: preparing green body powder, namely ball-milling raw materials in a formula according to a proportion for pulping, separately ball-milling needle-shaped wollastonite to obtain a slurry mixture with qualified fineness and needle-shaped wollastonite slurry, putting the slurry mixture and the needle-shaped wollastonite slurry into a slurry tank for uniform mixing, and then conveying the mixture to a spray drying tower to prepare green body powder, and storing for later use; secondly, pressing and forming, namely sending the prepared powder into a die cavity of a pressing machine for pressing to obtain a ceramic green body; thirdly, drying the green body, and conveying the formed ceramic green body into a roller kiln for drying; applying the cosmetic soil to the dried green bricks, and spraying the cosmetic soil to the green bricks; spraying an anti-diffusion agent; drying the glaze and drying by infrared rays; decoration of patterns; drying, namely drying green bricks decorated by pattern ink-jet printing; firstly, applying protective glaze; and (3) sintering at high temperature, and polishing or polishing and edging the fired ceramic tile semi-finished product to obtain the finished ceramic tile.
Description
Technical Field
The invention belongs to the technical field of ceramic ink-jet printing, and particularly relates to a ceramic ink-jet printing diffusion preventing method, a diffusion preventing agent and green body powder.
Background
The ceramic ink-jet printing technology is a novel technology combining ceramic surface decoration technology and computer technology, and utilizes the full-automatic computer numerical control technology to control an ink-jet printer, and the designed file information is directly printed on the ceramic surface by the multicolor ceramic ink through the ink-jet printer, so that the pattern decoration effect with vivid texture and rich colors is realized.
The ceramic ink used in the current ink-jet printing mainly comprises ceramic components, a solvent, a dispersing agent and a binding agent, contains more oil-soluble and lipid substances, and when the ink-jet printer directly sprays the ceramic ink onto the surface of a ceramic glaze layer, the ink can diffuse along capillary holes on the surface, so that the decorative pattern of a product is unclear, especially the product with deep color and large ink usage amount is more obvious, and the high-definition decorative effect of the product pattern is seriously affected. The main reasons for the diffusion of the ceramic ink-jet printing patterns are that the pressed blank is compact, the ink absorption performance is poor, the specific surface wettability of the interior of the cosmetic soil applied to the surface of the blank is high, the liquid ceramic ink cannot be quickly and longitudinally infiltrated downwards in the wetting process, the surface of the glaze layer is excessively long in residence time, the ink patterns cannot be timely solidified and shaped, the conditions that the patterns of the product become thicker and virtual and the patterns are blurred due to the fact that the ink is transversely diffused and is spread out can occur, the requirements of high-definition ink-jet decoration of ceramic products cannot be met, and the development and production of the ink-jet ceramic tiles are restricted.
Disclosure of Invention
In view of the defects existing in the prior art, the invention provides the method, the diffusion preventing agent and the green body powder for preventing the diffusion of the ceramic ink-jet printing, which are used for improving the water permeability between the cosmetic soil layer and the green body layer by adjusting and controlling the water permeability of the green body, reducing the water content of the cosmetic soil layer, and spraying the diffusion preventing agent on the surface of the cosmetic soil layer for ink-jet printing to solve the problem of the blurring of decorative patterns caused by the diffusion of ink-jet ink, improving the ink adhesion capability, accelerating the curing and shaping speed of the ink-jet patterns and realizing the high-definition ink-jet printing and diffusion preventing of ceramic products.
The first technical solution of the invention is the method for preventing diffusion of ceramic ink-jet printing, which is characterized by comprising the following steps:
preparing green body powder, namely ball-milling raw materials except needle-shaped wollastonite in a formula in proportion for pulping, simultaneously performing independent ball milling on the needle-shaped wollastonite to respectively obtain a slurry mixture with qualified fineness and needle-shaped wollastonite slurry, putting the slurry mixture and the needle-shaped wollastonite slurry into a slurry tank according to the mass portion ratio of the formula, uniformly mixing the slurry mixture and the needle-shaped wollastonite slurry, and then delivering the mixture to a spray drying tower to prepare green body powder, and storing and aging the green body powder for later use;
pressing and forming the ceramic green body, wherein the prepared powder is sent into a die cavity of a pressing machine to be pressed, and the ceramic green body is obtained, and the density of the ceramic green body is 1.70-1.75 g/cm 3 The strength is 1.5-2.0 Mpa;
thirdly, drying the green body, and conveying the formed ceramic green body into a roller kiln for drying, wherein the strength of the dried ceramic green body is 1.8-2.4 Mpa;
applying the cosmetic soil to the dried green bricks by adopting bell jar type or straight line glazing type, wherein the specific gravity of the cosmetic soil is 1.79+/-0.02, and the glazing amount is 500-600 g/m 2 ；
Spraying a diffusion preventing agent, wherein the adobe with the cosmetic soil is sprayed with the diffusion preventing agent, and the spraying amount of the diffusion preventing agent is 50-100 g/m 2 ；
Drying the glaze, namely performing infrared drying on the green bricks sprayed with the anti-diffusion agent, wherein the drying temperature is 100-200 ℃ and the drying time is 1-2 min;
decoration of the patterns, namely carrying out multichannel digital ink-jet decoration patterns according to the requirements of product effects;
drying the green bricks decorated by pattern ink-jet printing, wherein the drying mode is that the drying temperature of electric infrared drying is 150-250 ℃ and the drying time is 60-150 s; or flame firing and drying, wherein the drying temperature is 450-650 ℃ and the drying time is 30-60 s;
the protective glaze is sprayed/sprayed with transparent protective glaze or digital transparent protective glaze spray printing decoration is carried out, and the spraying amount of the transparent protective glaze is 100-450 g/m 2 ；
And (3) sintering at high temperature, namely feeding the green bricks subjected to all the decoration step procedures into a roller kiln for sintering, polishing or polishing and edging the semi-finished ceramic tile after sintering, and finally obtaining the finished ceramic tile.
As preferable: the formula of the green body powder comprises the following raw material components in parts by weight: 10-15 parts of needle wollastonite, 15-20 parts of strong plastic clay, 10-15 parts of quartz, 2-5 parts of calcined talcum, 25-35 parts of potassium feldspar, 10-25 parts of albite, 0.5-1.0 part of dispergator and 1-3 parts of modified lignin; the needle-shaped wollastonite slurry is prepared from industrial wollastonite, and the preparation method comprises the following steps: preparing industrial wollastonite into fine powder with the average particle size of 50-80 mu m by using a dry grinding method, respectively weighing water, wollastonite fine powder and methyl according to the proportion of 35:65:0.5, and inputting the fine powder into a tower type stirring mill for stirring and fine grinding to finally form needle-shaped wollastonite slurry with the average particle size of 5-10 mu m and the average length-diameter ratio of 6-10; the strength of the strong plastic mud is 7.0-10 Mpa.
As preferable: the formula of the green body powder comprises the following chemical components in parts by weight: al (Al) 2 O 3 15～18、SiO 2 60.0～70.0、K 2 O 3.5～5.0、Fe 2 O 3 0.1～0.5、Na 2 1.0 to 3.0 portions of O, 3 to 8 portions of CaO, 0.5 to 2.0 portions of MgO, and 2.0 to 3.0 portions of loss on ignition.
As preferable: the components of the diffusion inhibitor comprise carboxymethyl cellulose, water and sodium tripolyphosphate, and the preparation method comprises the following steps: carboxymethylcellulose, water and sodium tripolyphosphate are mixed according to a mass ratio of 5:95: mixing and adding into a ball mill for stirring and grinding after 0.5, so as to form uniform dispersing agent suspension;
controlling the specific gravity of the anti-diffusion agent suspension: 1.05 to 1.10g/cm 3 Controlling the flow rate of Hall for 20-30 s; a diffusion preventing layer is formed on the cosmetic soil layer through the diffusion preventing agent suspension, so that the fluidity of the ink for post-process jet printing is reduced, and excessive transverse diffusion of the ink is avoided.
As preferable: and the step F is to burn and dry the flame, namely, baking the glaze surface of the ceramic tile after the ink-jet printing by adopting open flame generated by a burning mechanism, and burning oil-soluble and lipid substances in the ceramic ink completely, so that the ink-jet pattern of the ceramic tile is quickly dried, solidified and shaped, the diffusion of the ink in a cosmetic soil layer and a later-procedure protective glaze layer is effectively inhibited, the edges of ink drops are smooth and clear, and the high-definition decorative effect of the ceramic tile pattern is further improved.
The second technical proposal of the invention is that the ceramic inkjet printing anti-diffusion agent is characterized by comprising the following components in parts by weight: 4-6 parts of carboxymethyl cellulose, 90-100 parts of water and 0.3-0.8 part of sodium tripolyphosphate.
As preferable: controlling the specific gravity of the anti-diffusion agent suspension: 1.05 to 1.10g/cm 3 And controlling the Hall flow rate for 20-30 s.
The third technical proposal of the invention is that the ceramic ink-jet printing diffusion-proof green body powder is characterized by comprising the following components in parts by weight: 10 to 15 parts of needle wollastonite, 15 to 20 parts of superplastic clay, 10 to 15 parts of quartz, 2 to 5 parts of calcined talcum, 25 to 35 parts of potassium feldspar, 10 to 25 parts of albite, 0.5 to 1.0 part of dispergator and 1 to 3 parts of modified lignin.
As preferable: the green body powder further comprises the following raw materials in parts by weight: 10 parts of needle wollastonite, 15 parts of superplastic clay, 10 parts of quartz, 2 parts of calcined talc, 35 parts of potassium feldspar, 25 parts of albite, 0.5 part of dispergator and 2.5 parts of modified lignin; the green body powder comprises the following chemical components: calculated in parts by weight, al 2 O 3 15.73、SiO 2 69.08、K 2 O 4.73、Fe 2 O 3 0.35、Na 2 O2.59, caO 4.85, mgO 0.53 and loss on ignition 2.14.
The fourth technical proposal of the invention is that the ceramic ink-jet printing diffusion-proof green body powder is characterized by comprising the following components in parts by weight: the blank powder formula comprises the following chemical components in parts by weight: al (Al) 2 O 3 15～18、SiO 2 60.0～70.0、K 2 O 3.5～5.0、Fe 2 O 3 0.1～0.5、Na 2 1.0 to 3.0 portions of O, 3 to 8 portions of CaO, 0.5 to 2.0 portions of MgO, and 2.0 to 3.0 portions of loss on ignition.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a ceramic ink-jet printing diffusion-preventing process method, which comprises the steps of adjusting a formula structure of a green body, reducing clay in the green body, increasing the consumption of barren materials to improve the water permeability of the green body, improving the permeability between the green body and a cosmetic layer, enabling moisture of the cosmetic soil applied on the green body to be absorbed and permeated into the green body rapidly, reducing the moisture content of the cosmetic layer, and simultaneously covering a layer of diffusion-preventing agent on the cosmetic layer of the green body to seal fine pores on the surface of the cosmetic soil, so that the condition that patterns are blurred due to overlong stay time of ink-jet ink on a glaze surface, good ink adhesion capability and smooth and clear edges of ink drops are avoided, and the ceramic product high-definition ink-jet decoration is realized.
According to the invention, needle-shaped wollastonite is introduced into the green brick, and is separately ball-milled with other materials in the formula, so that the integrity of the needle-shaped wollastonite structure in the green brick is ensured, and modified lignin and strong plastic mud are introduced, so that the problem of insufficient green brick strength caused by the reduction of clay consumption and excessive ridging material consumption is solved, the green brick strength of the green brick is effectively improved, the production quality and the high-quality rate are improved, and the large-scale stable production of the inkjet ceramic brick product is satisfied.
According to the invention, the ceramic tile blank with the cosmetic soil and the diffusion preventing agent applied before the ink jet is dried, so that the moisture of the cosmetic soil is effectively reduced, the difference between the surface layer and the internal moisture of the cosmetic soil layer is reduced, the diffusion speed of ink jet printing ink in the subsequent process is reduced, the ceramic tile after the ink jet decoration is subjected to secondary drying in an infrared drying or flame burning drying mode, oil-soluble and lipid substances in the ceramic ink are completely combusted, the ink jet printing pattern of the ceramic tile is quickly dried, solidified and shaped, the diffusion of the ink in the cosmetic soil layer and the transparent glaze layer in the subsequent process is favorably inhibited, and finally, the ink jet decoration pattern with vivid effect and high color saturation is formed, and the high-level ink jet printing decoration quality of the product is further improved.
Drawings
FIG. 1 is a schematic flow chart of a process method for preventing diffusion of ceramic ink-jet printing;
FIG. 2 is a diagram showing the structure of a ceramic tile prepared by the process method for printing the ceramic ink-jet printing diffusion prevention technology.
Description of main reference numerals:
| highly water permeable green body layer 1 | Cosmetic soil layer 2 | Diffusion preventive layer 3 |
| Inkjet decorative layer 4 | Transparent protective glaze layer 5 |
Detailed Description
The invention will be further described in detail below with reference to the accompanying drawings:
[ example 1 ]
Referring to fig. 1, the method for preparing the diffusion-proof ceramic ink-jet printing process comprises the following steps:
preparing powder, namely ball-milling raw materials except needle-shaped wollastonite in a formula in proportion for pulping, simultaneously performing independent ball milling on the needle-shaped wollastonite to respectively obtain a slurry mixture with qualified fineness and needle-shaped wollastonite slurry, putting the slurry mixture and the needle-shaped wollastonite slurry into a slurry tank according to the mass portion ratio of the formula, uniformly mixing the slurry mixture and the needle-shaped wollastonite slurry, and then delivering the mixture to a spray drying tower to prepare blank powder, and storing and aging the blank powder for later use;
the green body powder comprises the following raw materials in parts by weight: 10 parts of needle wollastonite, 15 parts of superplastic mud, 10 parts of quartz, 2 parts of calcined talc, 35 parts of potassium feldspar, 25 parts of albite, 0.5 part of dispergator and 2.5 parts of modified lignin; the chemical composition of the green body powder comprises: calculated in parts by weight, al 2 O 3 15.73、SiO 2 69.08、K 2 O 4.73、Fe 2 O 3 0.35、Na 2 O2.59, caO 4.85, mgO 0.53 and loss on ignition 2.14.
The needle-shaped wollastonite slurry is prepared from industrial wollastonite, and the preparation method comprises the following steps: the industrial wollastonite is prepared into fine powder with the average particle size of 60 mu m by a dry grinding method, then water, wollastonite fine powder and methyl are weighed according to the proportion of 35:65:0.5 respectively, and the fine powder is input into a tower type stirring mill for stirring and fine grinding, and finally needle-shaped wollastonite slurry with the average particle size of 6 mu m and the average length-diameter ratio of 9 is formed.
The strength of the strong plastic mud is 9.7Mpa.
Pressing and forming the ceramic green body, namely sending the prepared powder into a die cavity of a pressing machine for pressing to obtain the ceramic green body with the density of 1.71g/cm 3 The strength is 1.6Mpa;
thirdly, drying the green body, and conveying the formed ceramic green body into a roller kiln for drying, wherein the strength of the dried ceramic green body is 1.8Mpa;
applying the cosmetic soil to the dried green bricks by using a bell jar, wherein the specific gravity of the cosmetic soil is 1.78, and the glazing amount is 500g/m 2 ；
Spraying an anti-diffusion agent, wherein the adobe with the cosmetic soil is sprayed with the anti-diffusion agent, and the spraying amount of the anti-diffusion agent is 60g/m 2 Specific gravity 1.10g/cm 3 Hall flow rate 29s;
the anti-diffusion agent comprises the following components of carboxymethyl cellulose, water and sodium tripolyphosphate, and the preparation method comprises the following steps: carboxymethylcellulose, water and sodium tripolyphosphate are mixed according to a mass ratio of 5:95: mixing and adding into a ball mill for stirring and grinding to form uniform dispersing agent suspension. A diffusion preventing layer is formed on the cosmetic soil layer through the diffusion preventing agent suspension, so that the fluidity of the ink for post-process jet printing is reduced, and excessive transverse diffusion of the ink is avoided.
Performing drying on the glaze, namely performing infrared drying on the green bricks sprayed with the anti-diffusion agent, wherein the green bricks are used for controlling the dry humidity of the glaze layer, the drying temperature is 120 ℃, and the drying time is 2min;
decoration of the patterns, namely carrying out multichannel digital ink-jet decoration patterns according to the requirements of product effects;
drying, namely performing electric infrared drying shaping on the green bricks decorated by pattern ink-jet printing, wherein the drying temperature is 150 ℃ and the drying time is 150s;
shi Bao of (E)Protecting glaze, spraying transparent protecting glaze with the spraying amount of 100g/m 2 Specific gravity 1.45g/cm 3 ；
And (3) sintering at high temperature, namely feeding the green bricks subjected to all the decoration step procedures into a roller kiln for sintering, and edging the ceramic tile semi-finished products after sintering to finally obtain the finished ceramic tiles.
[ example 2 ]
The ceramic ink-jet printing diffusion-preventing process method comprises the following steps:
preparing powder, namely ball-milling raw materials except needle-shaped wollastonite in a formula in proportion for pulping, simultaneously performing independent ball milling on the needle-shaped wollastonite to respectively obtain a slurry mixture with qualified fineness and needle-shaped wollastonite slurry, uniformly mixing the slurry mixture and the needle-shaped wollastonite slurry in a slurry tank according to the mass fraction ratio of the formula, uniformly mixing the slurry mixture and the needle-shaped wollastonite slurry in the slurry tank according to a certain mass fraction ratio, and then conveying the slurry mixture and the slurry tank to a spray drying tower to prepare blank powder, and storing the blank powder for later use;
the green body powder comprises the following raw materials in parts by weight: 13 parts of needle wollastonite, 17 parts of superplastic mud, 12 parts of quartz, 3.5 parts of calcined talc, 35 parts of potassium feldspar, 17 parts of albite, 0.7 part of dispergator and 2.5 parts of modified lignin; the chemical composition of the green body powder comprises: calculated in parts by weight, al 2 O 3 16.31、SiO 2 67.46、K 2 O 4.77、Fe 2 O 3 0.39、Na 2 O2.01, caO 5.90, mgO 0.73 and loss on ignition 2.43.
The needle-shaped wollastonite slurry is prepared from industrial wollastonite, and the preparation method comprises the following steps: the industrial wollastonite is prepared into fine powder with the average particle size of 60 mu m by a dry grinding method, then water, wollastonite fine powder and methyl are weighed according to the proportion of 35:65:0.5 respectively, and the fine powder is input into a tower type stirring mill for stirring and fine grinding, and finally needle-shaped wollastonite slurry with the average particle size of 6 mu m and the average length-diameter ratio of 8 is formed.
The strength of the strong plastic mud is 8.5Mpa.
Pressing and forming, namely sending the prepared powder into a die cavity of a pressing machine for pressing to obtain a ceramic green body, wherein the density of the ceramic green body is 1.72g/cm 3 Strength, strength of1.8Mpa;
thirdly, drying the green body, and conveying the formed ceramic green body into a roller kiln for drying, wherein the strength of the dried ceramic green body is 2.0Mpa;
applying cosmetic soil to the dried green bricks by using a bell jar, wherein the specific gravity of the cosmetic soil is 1.81, and the glazing amount is 560g/m 2 ；
Spraying an anti-diffusion agent, wherein the adobe with the cosmetic soil is sprayed with the anti-diffusion agent, and the spraying amount of the anti-diffusion agent is 70g/m 2 Specific gravity 1.07g/cm 3 Hall flow rate 25s;
the anti-diffusion agent comprises the following components of carboxymethyl cellulose, water and sodium tripolyphosphate, and the preparation method comprises the following steps: carboxymethylcellulose, water and sodium tripolyphosphate are mixed according to a mass ratio of 5:95: mixing and adding into a ball mill for stirring and grinding to form uniform dispersing agent suspension. A diffusion preventing layer is formed on the cosmetic soil layer through the diffusion preventing agent suspension, so that the fluidity of the ink for post-process jet printing is reduced, and excessive transverse diffusion of the ink is avoided.
Performing drying on the glaze, namely performing infrared drying on the green bricks sprayed with the anti-diffusion agent, wherein the drying temperature is 140 ℃ and the drying time is 1min;
decoration of the patterns, namely carrying out multichannel digital ink-jet decoration patterns according to the requirements of product effects;
drying, namely performing flame burning, drying and shaping on the green bricks decorated by the pattern ink-jet printing, wherein the drying temperature is 450 ℃ and the drying time is 60 seconds;
the flame burns and dries, adopts the open flame that combustion mechanism produced, toasts the glaze after the ceramic tile inkjet printing, and oil solubility and lipid material in the ceramic ink are burnt completely, makes its inkjet pattern quick drying solidification design, effectively suppresses the diffusion of ink in cosmetic soil layer and later procedure protection glaze layer, and the ink drop edge is slick and clear, and then improves ceramic tile pattern high definition decorative effect.
Is coated with a protective glaze, and the transparent protective glaze is sprayed with the spraying amount of 450g/m 2 Specific gravity 1.75g/cm 3 ；
And (3) sintering at high temperature, namely feeding the green bricks subjected to all the decoration step procedures into a roller kiln for sintering, and polishing and edging the semi-finished ceramic tile after sintering to finally obtain the finished ceramic tile.
[ example 3 ]
The ceramic ink-jet printing diffusion-preventing process method comprises the following steps:
preparing powder, namely ball-milling raw materials except needle-shaped wollastonite in a formula in proportion for pulping, simultaneously performing independent ball milling on the needle-shaped wollastonite to respectively obtain a slurry mixture with qualified fineness and needle-shaped wollastonite slurry, uniformly mixing the slurry mixture and the needle-shaped wollastonite slurry in a slurry tank according to the mass fraction ratio of the formula, uniformly mixing the slurry mixture and the needle-shaped wollastonite slurry in the slurry tank according to a certain mass fraction ratio, and then conveying the slurry mixture and the slurry tank to a spray drying tower to prepare blank powder, and storing the blank powder for later use;
the green body powder comprises the following raw materials in parts by weight: 15 parts of needle wollastonite, 20 parts of superplastic mud, 15 parts of quartz, 5 parts of calcined talc, 28 parts of potassium feldspar, 13 parts of albite, 1 part of a dispergator and 3 parts of modified lignin; the chemical composition of the green body powder comprises: calculated in parts by weight, al 2 O 3 16.05、SiO 2 68.02、K 2 O 3.13、Fe 2 O 3 0.45、Na 2 O1.78, caO 6.21, mgO 1.68 and loss on ignition 2.68.
The needle-shaped wollastonite slurry is prepared from industrial wollastonite, and the preparation method comprises the following steps: the industrial wollastonite is prepared into fine powder with the average particle size of 80 mu m by a dry grinding method, then water, wollastonite fine powder and methyl are weighed according to the proportion of 35:65:0.5 respectively, and the fine powder is input into a tower type stirring mill for stirring and fine grinding, and finally needle-shaped wollastonite slurry with the average particle size of 8 mu m and the average length-diameter ratio of 9 is formed.
The strength of the strong plastic mud is 8.5Mpa.
Pressing and forming the ceramic green body, wherein the prepared powder is sent into a die cavity of a pressing machine to be pressed, and the ceramic green body is obtained, and the density of the ceramic green body is 1.75g/cm 3 The strength is 2.0Mpa;
thirdly, drying the green body, and conveying the formed ceramic green body into a roller kiln for drying, wherein the strength of the dried ceramic green body is 2.3Mpa;
applying the cosmetic soil to the dried green bricks by adopting linear glaze spraying, wherein the specific gravity of the cosmetic soil is 1.79, and the glaze application amount is 600g/m 2 ；
Spraying an anti-diffusion agent, wherein the adobe with the cosmetic soil is sprayed with the anti-diffusion agent, and the spraying amount of the anti-diffusion agent is 90g/m 2 Specific gravity 1.09g/cm 3 Hall flow rate 21s;
the anti-diffusion agent comprises the following components of carboxymethyl cellulose, water and sodium tripolyphosphate, and the preparation method comprises the following steps: carboxymethylcellulose, water and sodium tripolyphosphate are mixed according to a mass ratio of 5:95: mixing and adding into a ball mill for stirring and grinding to form uniform dispersing agent suspension. A diffusion preventing layer is formed on the cosmetic soil layer through the diffusion preventing agent suspension, so that the fluidity of the ink for post-process jet printing is reduced, and excessive transverse diffusion of the ink is avoided.
Performing drying on the glaze, namely performing infrared drying on the green bricks sprayed with the anti-diffusion agent, wherein the green bricks are used for controlling the dry humidity of the glaze layer, the drying temperature is 180 ℃, and the drying time is 1min;
decoration of the patterns, namely carrying out multichannel digital ink-jet decoration patterns according to the requirements of product effects;
drying, namely performing flame burning, drying and shaping on the green bricks decorated by the pattern ink-jet printing, wherein the drying temperature is 650 ℃ and the drying time is 30s;
the flame burns and dries, adopts the open flame that combustion mechanism produced, toasts the glaze after the ceramic tile inkjet printing, and oil solubility and lipid material in the ceramic ink are burnt completely, makes its inkjet pattern quick drying solidification design, effectively suppresses the diffusion of ink in cosmetic soil layer and later procedure protection glaze layer, and the ink drop edge is slick and clear, and then improves ceramic tile pattern high definition decorative effect.
The protective glaze is applied, digital transparent protective glaze spray printing decoration is carried out, and the spraying amount of the digital transparent protective glaze is 270g/m 2 ；
And (3) sintering at high temperature, namely feeding the green bricks subjected to all the decoration step procedures into a roller kiln for sintering, and polishing and edging the semi-finished ceramic tile after sintering to finally obtain the finished ceramic tile.
[ example 4 ]
This embodiment differs from the foregoing embodiments 1 to 3 in that:
the method for preventing diffusion of ceramic ink-jet printing comprises the following steps:
pressing and forming the ceramic green body, namely sending the prepared powder into a die cavity of a pressing machine for pressing to obtain the ceramic green body with the density of 1.70g/cm 3 、1.70～1.72g/cm 3 、1.73～1.75g/cm 3 Examples of the strength of the alloy are 1.5Mpa, 1.75Mpa, 1.5-1.75 Mpa and 1.75-2.0 Mpa;
drying the green body, namely conveying the formed ceramic green body into a roller kiln for drying, wherein the strength of the dried ceramic green body is 1.8Mpa, 1.9Mpa, 2.1Mpa, 2.2Mpa, 2.4Mpa, 1.8-2.0 Mpa, 2.0-2.4 Mpa and 1.9-2.3 Mpa;
applying the cosmetic soil to the dried green bricks by using a bell jar, wherein the specific gravity of the cosmetic soil is 1.80+/-0.02 and 1.81+/-0.02; glazing amount is 500g/m 2 The glazing amount is 550g/m 2 The glazing quantity is 500-550 g/m 2 The glazing quantity is 550-600 g/m 2 Is described herein;
spraying an anti-diffusion agent, wherein the adobe with the cosmetic soil is sprayed with the anti-diffusion agent, and the spraying amount of the anti-diffusion agent is 50g/m 2 、60g/m 2 、80g/m 2 、100g/m 2 ；50～60g/m 2 、60～70g/m 2 、70～80g/m 2 、80～90g/m 2 、90～100g/m 2 、55～65g/m 2 、75～85g/m 2 、85～95g/m 2 Is described herein;
performing drying on the glaze, namely performing infrared drying on the green bricks sprayed with the anti-diffusion agent, wherein the drying temperature is 100 ℃, 120 ℃, 130 ℃, 150 ℃, 160 ℃, 170 ℃, 190 ℃,200 ℃, 100-120 ℃, 130-140 ℃, 150-160 ℃, 170-190 ℃, 190-200 ℃, 100-150 ℃ and 15-200 ℃ for controlling the dry humidity of the glaze layer; drying time is 1.5min, 2min, 1-1.5 min, 1.5-2 min;
drying the green bricks decorated by pattern ink-jet printing, wherein the drying mode is electric infrared drying, the drying temperature is 150 ℃,200 ℃, 250 ℃, 155-200 ℃, 200-240 ℃, and the drying time is 70s, 80s, 90s, 100s, 110s, 120s, 130s, 140s, 150s, 60-70 s, 70-80 s, 80-90 s, 90-100 s, 100-110 s, 110-120 s, 120-130 s, 130-140 s, 140-150 s, 65-145 s, 70-110 s, 90-120 s, 110-150 s, 130-150 s;
performing flame burning drying shaping on the green bricks decorated by pattern ink-jet printing, wherein the drying temperature is 500 ℃ and 550 ℃, 600 ℃, 450-500 ℃, 500-550 ℃, 550-600 ℃, 600-650 ℃, and the drying time is 40, 50s, 60s, 30-40 s, 40-50 s, 50-60 s, 35-55 s;
is coated with a protective glaze, and the transparent protective glaze is sprayed with the spraying amount of 100g/m 2 、200g/m 2 、300g/m 2 、400g/m 2 、150g/m 2 、250g/m 2 、350g/m 2 、100～200g/m 2 、200～300g/m 2 、300～450g/m 2 、150～250g/m 2 、250～350g/m 2 、350～450g/m 2 、100～300g/m 2 、300～450g/m 2 、200～400g/m 2 Is described herein;
the foregoing description is only of the preferred embodiments of the invention, and all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (3)
1. A method for preventing diffusion of ceramic ink-jet printing, which is characterized by comprising the following steps:
preparing green body powder, namely ball-milling raw materials except needle-shaped wollastonite in a formula in proportion for pulping, simultaneously performing independent ball milling on the needle-shaped wollastonite to respectively obtain a slurry mixture with qualified fineness and needle-shaped wollastonite slurry, putting the slurry mixture and the needle-shaped wollastonite slurry into a slurry tank according to the mass portion ratio of the formula, uniformly mixing the slurry mixture and the needle-shaped wollastonite slurry, and then delivering the mixture to a spray drying tower to prepare green body powder, and storing and aging the green body powder for later use; the formula of the green body powder comprises the following raw material components in parts by weight: 10-15 parts of needle wollastonite, 15-20 parts of strong plastic clay, 10-15 parts of quartz, 2-5 parts of calcined talcum, 25-35 parts of potassium feldspar, 10-25 parts of albite, 0.5-1.0 part of dispergator and 1-3 parts of modified lignin;
pressing and forming the ceramic green body, wherein the prepared powder is sent into a die cavity of a pressing machine to be pressed, and the ceramic green body is obtained, and the density of the ceramic green body is 1.70-1.75 g/cm 3 The strength is 1.5-2.0 Mpa;
thirdly, drying the green body, and conveying the formed ceramic green body into a roller kiln for drying, wherein the strength of the dried ceramic green body is 1.8-2.4 Mpa;
applying the cosmetic soil to the dried green bricks by adopting bell jar type or straight line glazing type, wherein the specific gravity of the cosmetic soil is 1.79+/-0.02, and the glazing amount is 500-600 g/m 2 ；
Spraying a diffusion preventing agent, wherein the adobe with the cosmetic soil is sprayed with the diffusion preventing agent, and the spraying amount of the diffusion preventing agent is 50-100 g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the Step five, the diffusion inhibitor is composed of carboxymethyl cellulose, water and sodium tripolyphosphate, and the preparation method comprises the following steps: carboxymethylcellulose, water and sodium tripolyphosphate are mixed according to a mass ratio of 5:95: mixing and adding into a ball mill for stirring and grinding after 0.5, so as to form uniform dispersing agent suspension; controlling the specific gravity of the anti-diffusion agent suspension: 1.05 to 1.10g/cm 3 Controlling the flow rate of Hall for 20-30 s; forming an anti-diffusion layer on the cosmetic soil layer through the anti-diffusion agent suspension, so that the fluidity of the ink for post-process jet printing is reduced, and excessive transverse diffusion of the ink is avoided;
drying the glaze, namely performing infrared drying on the green bricks sprayed with the anti-diffusion agent, wherein the drying temperature is 100-200 ℃ and the drying time is 1-2 min;
decoration of the patterns, namely carrying out multichannel digital ink-jet decoration patterns according to the requirements of product effects;
drying the green bricks decorated by pattern ink-jet printing, wherein the drying mode is electric infrared drying, the drying temperature is 150-250 ℃, and the drying time is 60-150 s; or flame firing and drying, wherein the drying temperature is 450-650 ℃ and the drying time is 30-60 s; the flame firing and drying are carried out by adopting open flame generated by a burning mechanism, baking the glaze surface of the ceramic tile after ink-jet printing, and completely burning oil-soluble and lipid substances in ceramic ink, so that the ink-jet pattern of the ceramic tile is quickly dried, solidified and shaped, the diffusion of the ink in a cosmetic soil layer and a later-procedure protective glaze layer is effectively inhibited, the edges of ink drops are smooth and clear, and the high-definition decorative effect of the ceramic tile pattern is further improved;
the protective glaze is sprayed/sprayed with transparent protective glaze or digital transparent protective glaze spray printing decoration is carried out, and the spraying amount of the transparent protective glaze is 100-450 g/m 2 ；
And (3) sintering at high temperature, namely feeding the green bricks subjected to all the decoration step procedures into a roller kiln for sintering, polishing or polishing and edging the semi-finished ceramic tile after sintering, and finally obtaining the finished ceramic tile.
2. The method for preventing diffusion of ceramic ink-jet printing according to claim 1, wherein the needle-shaped wollastonite slurry is prepared from industrial wollastonite, and the preparation method comprises the following steps: preparing industrial wollastonite into fine powder with the average particle size of 50-80 mu m by using a dry grinding method, respectively weighing water, wollastonite fine powder and methyl according to the proportion of 35:65:0.5, and inputting the fine powder into a tower type stirring mill for stirring and fine grinding to finally form needle-shaped wollastonite slurry with the average particle size of 5-10 mu m and the average length-diameter ratio of 6-10; the strength of the strong plastic mud is 7.0-10 Mpa.
3. The method for preventing diffusion of ceramic ink-jet printing according to claim 1, wherein the formula of the green body powder comprises the following chemical components in parts by weight: al (Al) 2 O 3 15～18、SiO 2 60.0～70.0、K 2 O 3.5～5.0、Fe 2 O 3 0.1～0.5、Na 2 1.0 to 3.0 portions of O, 3 to 8 portions of CaO, 0.5 to 2.0 portions of MgO, and 2.0 to 3.0 portions of loss on ignition.
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