CN115286243B - Rock plate with shale surface effect and preparation method thereof - Google Patents
Rock plate with shale surface effect and preparation method thereof Download PDFInfo
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- CN115286243B CN115286243B CN202210816184.3A CN202210816184A CN115286243B CN 115286243 B CN115286243 B CN 115286243B CN 202210816184 A CN202210816184 A CN 202210816184A CN 115286243 B CN115286243 B CN 115286243B
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- 230000000694 effects Effects 0.000 title claims abstract description 70
- 239000011435 rock Substances 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000011449 brick Substances 0.000 claims abstract description 74
- 238000007641 inkjet printing Methods 0.000 claims abstract description 30
- 238000005498 polishing Methods 0.000 claims abstract description 16
- 238000010304 firing Methods 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 7
- 238000000576 coating method Methods 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims description 38
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 31
- 239000000126 substance Substances 0.000 claims description 31
- 238000005507 spraying Methods 0.000 claims description 28
- 229910052708 sodium Inorganic materials 0.000 claims description 25
- 230000005484 gravity Effects 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 13
- 238000002844 melting Methods 0.000 claims description 11
- 230000008018 melting Effects 0.000 claims description 11
- 229910000272 alkali metal oxide Inorganic materials 0.000 claims description 6
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 claims description 6
- 238000007639 printing Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 description 38
- 238000005245 sintering Methods 0.000 description 16
- 229910004298 SiO 2 Inorganic materials 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 239000002585 base Substances 0.000 description 9
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- 230000007704 transition Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 206010027627 Miliaria Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
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- 230000002209 hydrophobic effect Effects 0.000 description 1
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- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/89—Coating or impregnation for obtaining at least two superposed coatings having different compositions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The invention discloses a rock plate with shale surface effect and a preparation method thereof. The preparation method comprises the following steps: applying a first overglaze on the surface of the green brick; ink-jet printing carving ink on the surface of the adobe after the first overglaze is applied; applying a second overglaze on the surface of the green brick after the ink is printed and carved; ink-jet printing a design pattern on the surface of the adobe after the second surface glaze is applied; coating glaze on the surface of the green brick after the design pattern is printed by ink jet; and firing and polishing the green bricks after the glaze coating is applied to obtain the rock plate with the shale surface effect.
Description
Technical Field
The invention relates to a rock plate with shale surface effect and a preparation method thereof, and belongs to the technical field of ceramic rock plate production and manufacturing.
Background
With the change of informatization and intellectualization in the ceramic industry, the age of the rock plate in the ceramic industry has come, the cognition of consumers on traditional ceramics is broken along with the age, and the application of the rock plate in the household field is widened gradually. The rock plate is used as a large-area decorative material, can form a certain stone texture effect, and can also have rich colors. However, according to current market feedback, stone-like rock slabs still face the problems of insufficient texture, stone glaze level and detail to be further improved.
The large specification of the rock plate makes it difficult to perform superposition and accumulation of multiple layers of glaze materials while guaranteeing the comprehensive physical and chemical properties of the rock plate. So at present, the rock plate is usually selected to form visual effects on the plane glaze layer through dry grain polishing, soft polishing, transparent polishing glaze application, matte fine dry grain application and the like. For example, chinese invention CN113321536a discloses a process for preparing a rock plate with a simulated engraving die effect, which comprises the steps of printing engraving ink on green bricks, spraying glaze, printing patterns, spraying protective glaze, and firing. The preparation method does not use an expensive engraving die, and only obtains the rock plate with rich layers by specially making glaze and utilizing the characteristic of ink to fuse water and oil under high-temperature sintering. However, the glaze mold obtained by the method has a shallow effect, and the presented mold has an insufficient level.
Disclosure of Invention
In view of the above problems, the invention provides a rock plate with shale surface effect and a preparation method thereof, wherein concave-convex texture is formed through a digital process, and convex parts are smooth transition through polishing (half polishing light brush), and the polished glaze has a natural stepped shale layer-like effect due to the fact that an effect network of ink jet printing engraving ink has a gradient-clear gray level difference.
In a first aspect, the present invention provides a method for preparing a rock board having a shale surface effect, the method comprising the steps of:
applying a first overglaze on the surface of the green brick; the chemical composition of the overglaze comprises: in mass percent, siO 2 ：54～56％、Al 2 O 3 : 22-26%, alkaline earth metal oxide: 0.4 to 0.6 percent of alkali metal oxide: 6 to 8 percent of ZrO 2 : 8-10%; ink-jet printing carving ink on the surface of the adobe after the first overglaze is applied;
applying a second overglaze on the surface of the green brick after the ink is printed and carved;
ink-jet printing a design pattern on the surface of the adobe after the second surface glaze is applied;
coating glaze on the surface of the green brick after the design pattern is printed by ink jet; the dry grain composition of the cover glaze comprises: in mass percent, siO 2 ：48～55％、Al 2 O 3 : 16-20%, alkaline earth metal oxide: 14-21%, alkali metal oxide: 6-10%, znO:4 to 6 percent;
and firing and polishing the green bricks after the glaze coating is applied to obtain the rock plate with the shale surface effect.
Preferably, the initial melting temperature of the overglaze is 1150-1180 ℃; preferably, the chemical composition of the overglaze comprises: in mass percent, siO 2 ：54～56％、Al 2 O 3 ：22～26％、CaO：0.3～0.4％、MgO：0.1～0.2％、K 2 O：4～5％、Na 2 O：2～3％、ZrO 2 ：8～10％。
Preferably, the first overglaze is sprayed, preferably the specific gravity of the first overglaze is 1.25-1.35, and the glazing amount is 200-300 g/m 2 。
Preferably, the second overglaze is sprayed, preferably the specific gravity of the second overglaze is 1.45-1.5, and the glazing amount is 450-600 g/m 2 。
Preferably, the texture of the engraving ink is presented by a gradient effect screen having a plurality of gray levels; preferably, the gray scale range of the effect mesh is 10-80%; more preferably, the gray scale difference between the different gray scale levels is 20 to 60%.
Preferably, the preparation method further comprises the step of performing inkjet printing on the surface of the green brick after the design pattern is subjected to inkjet printing again before the covering glaze is applied; preferably, the effect screen gray of the ink jet printing engraving ink is 20 to 40%.
Preferably, the initial melting temperature of the cover glaze is 880-920 ℃; preferably, the dry-grain chemical composition of the cover glaze comprises: in mass percent, siO 2 ：48～55％、Al 2 O 3 ：16～20％、BaO：6～8％、CaO：4～6％、SrO：3.5～4.5％、MgO：1～2％、K 2 O：3.5～5.5％、Na 2 O：3～4％、ZnO：4～6％。
Preferably, the application mode of the cover glaze is spraying glaze, preferably, the specific gravity of the cover glaze is 1.20-1.22, and the glazing amount is 160-250 g/m 2 。
Preferably, the highest sintering temperature is 1220-1230 ℃, and the sintering period is 105-120 min.
In a second aspect, the present invention provides a rock board with shale surface effect obtainable by the method of any one of the above.
Drawings
FIG. 1 is a graph of the tile surface effect of example 1;
FIG. 2 is a diagram of the tile surface effect of a conventional mold product;
FIG. 3 is a graph of the tile surface effect of comparative example 1;
fig. 4 is an effect screen gray scale of an ink jet printing engraving ink.
Detailed Description
The invention is further illustrated by the following embodiments, which are to be understood as merely illustrative of the invention and not limiting thereof. Unless otherwise specified, each percentage refers to a mass percent. The following illustrates the preparation method of the rock plate with shale surface effect according to the present invention.
Pressing the rock plate base material into a green brick. The green brick is a planar green brick. The chemical composition and the raw material composition of the rock plate base material are not limited, and the rock plate base material commonly used in the field can be adopted. Low shrinkage rock laminate binders are preferred. As an example, the chemical composition of the low shrinkage rock laminate base may include: in mass percent, IL:5 to 6 percent of SiO 2 ：63～68％、Al 2 O 3 ：18～20％、CaO：3～4％、MgO：0.5～1％、K 2 O：2.5～3.5％、Na 2 O：2～3％、Fe 2 O 3 :0.5 to 1 percent. The rock plate base material with the composition can reduce the shrinkage rate of the product, reduce the unit energy consumption, and especially improve the alignment accuracy of (ink jet) for the close-joint continuous-grain product. The firing shrinkage of the green bricks can be controlled to 8-9%. Firing shrinkage refers to the percentage of dimensional change of the green bricks before and after firing.
And drying the green bricks. Drying may be performed in a drying kiln. For example, the drying temperature is 120 to 160℃and the drying time is 50 to 65 minutes. The moisture of the dried green bricks can be controlled within 0.5 wt%.
And applying a first overglaze on the surface of the dried green brick, thereby covering the color of the green brick and avoiding the influence of the green brick color to the pattern decoration. The initial melting temperature of the overglaze is 1150-1180 ℃. In some embodiments, the chemical composition of the overglaze comprises: in mass percent, siO 2 ：54～56％、Al 2 O 3 : 22-26%, alkaline earth metal oxide: 0.4 to 0.6 percent of alkali metal oxide: 6 to 8 percent of ZrO 2 : 8-10%. As an example, the chemical composition of the overglaze includes: in mass percent, siO 2 ：54～56％、Al 2 O 3 ：22～26％、CaO：0.3～0.4％、MgO：0.1～0.2％、K 2 O：4～5％、Na 2 O：2～3％、ZrO 2 : 8-10%. The overglaze with high initial melting temperature can prevent gas overflow of green bricks caused by burning loss in a high-temperature environment, which is beneficial to shale effect presentation and glaze quality improvement, and meanwhile, overglaze with high initial melting temperature can avoid the influence on the die effect caused by the fact that the glaze is melted flat. If the initial melting temperature of the overglaze is too high, prickly heat or bubbles are likely to occur on the glaze surface.
The first overglaze is applied by spraying. Glaze can be sprayed through a swing arm type high-pressure glaze spraying cabinet. In some embodiments, the first overglaze has a specific gravity of 1.25 to 1.35 and a glazing amount of 200 to 300g/m 2 . The glazing amount of the first overglaze is not too high, otherwise the effect network of the engraving ink becomes blurred due to the too high moisture content of the surface of the green brick.
And (3) carrying out ink-jet printing on the surface of the green brick after the first overglaze is applied. The texture of the engraving ink is presented by a gradient effect mesh having a plurality of gray levels. Preferably, the effect mesh has a gray scale in the range of 10 to 80%. The number of gray levels and the gray differences of each adjacent gray level are adaptively changed according to shale texture effects. The fewer the number of gray levels, the greater the gray level difference between each adjacent gray level, and the stronger the slice jump of the shale texture. In some technical schemes, the number of gray levels of the effect network is 2-4. The gradient grey scale of the effect mesh shows an increasing or decreasing trend. The printing quantity of the carving ink at the corresponding position can be controlled by controlling the gradient gray level of the effect net, so that the gradient transition effect is formed. In some embodiments, the gray level difference between (adjacent) different gray levels is 20-60%.
The engraving ink is preferably a matte engraving ink. The composition of the engraving ink is not limited, and the engraving ink commonly used in the art can be used. In some embodiments, the composition of the engraving ink includes: the organic solvent comprises the following components in percentage by mass: 65-75 percent of hydrophobic coupling agent:2-4% of a polymer dispersing agent: 5-10% of powder: 20-35%. The chemical composition of the powder comprises: in mass percent, IL:3.5 to 4.5 percent of SiO 2 ：43～46％、Al 2 O 3 ：24～26％、BaO：5～6％、CaO：4～6％、MgO：2～3％、K 2 O：2.5～3.5％、Na 2 O：3.5～4.5％、B 2 O 3 ：3～4％、SrO：3～4％、ZnO：3～4％。
And applying a second overglaze on the surface of the green brick after the carving ink is printed by ink-jet. The second overglaze physically reacts with the engraving ink. The position of the ink jet printing engraving ink is piled up with different amounts of glaze according to the gray level of the ink. The positions without carving ink show glaze accumulation effect, and the positions with carving ink form pits due to the repulsion of water and oil, so that the positions show hierarchical mould effect. Specifically, the oily carving ink and the aqueous overglaze layer have a release effect due to a large difference in surface tension, the positions where the carving ink is not formed form glaze layer accumulation, the positions where the carving ink is provided with a few glaze layers, and the sintered glaze surface has a natural relief effect like that of natural rock. The matte carving ink enables the concave part to present a matte effect, and the concave part after half polishing is matched with the convex part to have bright and matte contrast. The chemical composition of the second overglaze may be the same as the first overglaze. The initial melting temperature of the overglaze is 1150-1180 ℃. In some embodiments, the chemical composition of the overglaze comprises: in mass percent, siO 2 ：54～56％、Al 2 O 3 : 22-26%, alkaline earth metal oxide: 0.4 to 0.6 percent of alkali metal oxide: 6 to 8 percent of ZrO 2 : 8-10%. As an example, the chemical composition of the overglaze includes: in mass percent, siO 2 ：54～56％、Al 2 O 3 ：22～26％、CaO：0.3～0.4％、MgO：0.1～0.2％、K 2 O：4～5％、Na 2 O：2～3％、ZrO 2 ：8～10％。
The second overglaze is applied by spraying. Glaze is sprayed through a swing arm type high-pressure glaze spraying cabinet. In some embodiments, the second overglaze has a specific gravity of 1.45 to 1.5 and a glazing amount of 450 to 600g/m 2 . The specific gravity of the second overglaze is increased, the moisture content is reduced, the definition of the mould effect is improved, the glazing quantity is increased, and the better protruding mould effect can be obtained when the engraving ink is discharged.
If the glazing parameters of the first overglaze and the second overglaze are replaced, the moisture content of the second overglaze is too high, the glaze surface contacted with the engraving ink is easy to be blurred, and meanwhile, the glazing amount of the second overglaze is smaller, and even at the position where the gray level of the engraving ink is very high, the excellent die effect cannot be presented because the glaze is less accumulated and the surface bulge feeling is very poor.
And (3) carrying out ink-jet printing on the surface of the green brick after the second surface glaze is applied. The texture and the flower color of the design pattern can be adaptively changed according to the needs. Preferably, after the design pattern is ink-jet printed, the (second) ink-jet printing of the engraving ink is continued. This can further enhance the mold effect. Preferably, the effect web gray of the engraving ink of the second ink-jet printing is the same as that of the first ink-jet printing, more preferably 20-40%. For example, an inkjet machine with twelve channels is adopted, one channel is used for inkjet printing design patterns, and the last channel is used for inkjet printing low-gray engraving ink, so that the defects that the patterns are blurred due to large gray ink on the whole layout, the glazed surface cannot be dried quickly, and the glazed surface defects are generated in the product can be avoided.
And (5) coating glaze on the surface of the green brick to form a protective layer. The dry grain initial melting temperature of the cover glaze is 880-920 ℃. The chemical composition of the cover glaze comprises: in mass percent, siO 2 ：48～55％、Al 2 O 3 : 16-20%, alkaline earth metal oxide: 14-21%, alkali metal oxide: 6-10%, znO:4 to 6 percent. The high-temperature dry particles can increase the texture of the glaze, and the flaky effect of the glaze after semi-polishing is better and more outstanding. Conversely, melting of low temperature dry pellets during firing can reduce the product mold effect. As an example, the dry grain composition of the cover glaze may include: in mass percent, siO 2 ：48～55％、Al 2 O 3 ：16～20％、BaO：6～8％、CaO：4～6％、SrO：3.5～4.5％、MgO：1～2％、K 2 O：3.5～5.5％、Na 2 O：3～4％、ZnO：4～6％。
The raw material composition of the cover glaze can comprise: dry particles in percentage by mass: 23-26% of suspending agent: 45-50% of stamp-pad ink: 20-24 percent of protective glaze: 0.5 to 1 percent of calcined kaolin slurry: 1 to 2 percent.
The particle size distribution of the dry particles may include: the mass percentage is more than 200 meshes: 0-8%; 200-325 mesh: 28% -40%; 325 mesh below: 60% -70%. 200 mesh or more refers to the portion resting on a 200 mesh screen. The 325 mesh screen hereinafter refers to a portion passing through the 325 mesh screen. The adoption of the superfine dry particles with the particle size distribution can enhance the texture of the glaze surface and increase the antifouling property of the glaze surface of the product.
The covering glaze is applied by spraying glaze. Glaze is sprayed through a swing arm type high-pressure glaze spraying cabinet. In some technical schemes, the specific gravity of the cover glaze is 1.20-1.22, and the glazing quantity is 160-250 g/m 2 . If the covering glaze is excessively applied, the mold effect is not good, and the green bricks with the covering glaze are easy to fry after entering the kiln. The glaze spraying is difficult to be suitable for the occasion with lower glaze application amount, is unfavorable for the discharging action with engraving ink, and can reduce the effect of a product die.
And drying the green bricks after the covering glaze is applied. A drying kiln, such as a seven layer drying kiln, may be used. For example, the drying temperature is 110 to 130℃and the drying time is 50 to 60 minutes. The moisture of the dried green bricks can be controlled within 0.5 wt%.
And (5) sintering. The highest firing temperature is 1220-1230 ℃, and the firing period is 105-120 min.
Polishing. Preferably a half-parabola. The glaze is treated by adopting a multi-combination continuous semi-polishing light brush, and the surface layer is smooth and flat, so that the rock plate surface is more similar to the natural shale stone effect.
According to the preparation method of the rock plate with the shale surface effect, disclosed by the invention, the matte engraving ink is combined with two overglaze spraying procedures, and a layered effect net is matched, so that flexible customization of shale textures by a full-digital process is realized, and the obtained product has a layered shale effect with concave-convex shape, and can be used as an alternative scheme of a traditional mold forming process. Furthermore, the method combines the design of the color of the ink-jet pattern and is assisted with the treatment of a half-polishing process, so that the texture of the product is more natural, and the uniqueness of the product is remarkably improved.
The present invention will be further illustrated by the following examples. It is also to be understood that the following examples are given solely for the purpose of illustration and are not to be construed as limitations upon the scope of the invention, since numerous insubstantial modifications and variations will now occur to those skilled in the art in light of the foregoing disclosure. The specific process parameters and the like described below are also merely examples of suitable ranges, i.e., one skilled in the art can make a suitable selection from the description herein and are not intended to be limited to the specific values described below.
Example 1
The preparation method of the rock plate with the shale surface effect comprises the following steps:
and step 1, pressing the low-shrinkage rock plate base material into green bricks.
And 2, drying the green bricks in a drying kiln. The drying temperature is 125 ℃, the drying time is 60min, and the moisture of the dried green bricks is controlled within 0.5 wt%.
And step 3, applying a first overglaze on the surface of the dried green brick. The chemical composition of the overglaze comprises: in mass percent, IL:3.5% of SiO 2 ：55％、Al 2 O 3 ：25％、CaO：0.4％、MgO：0.1％、K 2 O：4.5％、Na 2 O:2.5%, znO:9%. The overglaze is applied by spraying glaze, the specific gravity is 1.28, and the glazing quantity is 210g/m 2 。
And 4, performing ink-jet printing on the brick surface to which the first surface glaze is applied to form matte engraving ink. The chemical composition of the powder of the matte engraving ink comprises: in mass percent, IL:3%, siO 2 ：45％、Al 2 O 3 ：24％、BaO：5％、CaO：5％、MgO：2.5％、K 2 O：2.5％、Na 2 O：3.5％、B 2 O 3 ：3％、SrO：3％、ZnO：3.5％。
Step 5, engraving ink in the inkjet printingAnd applying a second overglaze on the surface of the green brick. The chemical composition of the overglaze comprises: in mass percent, IL:3.5% of SiO 2 ：55％、Al 2 O 3 ：25％、CaO：0.4％、MgO：0.1％、K 2 O：4.5％、Na 2 O:2.5%, znO:9%. The overglaze is applied by spraying glaze, the specific gravity is 1.48, and the glazing quantity is 500g/m 2 。
And 6, carrying out ink-jet printing on the surface of the green brick sprayed with the second overglaze to form a design pattern.
And 7, applying a cover glaze on the surface of the green brick with the designed pattern printed by the ink jet. The chemical composition of the dry grains of the cover glaze comprises: in mass percent, siO 2 ：48％、Al 2 O 3 ：16％、BaO：6％、CaO：4％、SrO：3.5％、MgO：1％、K 2 O：3.5％、Na 2 O:3%, znO:4%. The application mode of the cover glaze is glaze spraying, the specific gravity is 1.22, and the glaze spraying amount is 190g/m 2 。
And 8, drying the green bricks after the covering glaze is applied in a drying kiln. The drying temperature is 120 ℃, and the moisture of the dried green bricks is controlled within 0.5 weight percent.
And 9, sintering at high temperature in a roller kiln. The highest sintering temperature is 1220 ℃, and the sintering period is 105min.
And 10, performing semi-polishing treatment on the sintered rock plate.
FIG. 1 is a graph of the tile effect of example 1. It can be seen that the product has a lamellar shale effect with concave-convex effect.
Comparative example 1
The preparation method of the rock plate with the shale surface effect comprises the following steps:
and step 1, pressing the low-shrinkage rock plate base material into green bricks.
And 2, drying the green bricks in a drying kiln. The drying temperature is 125 ℃, the drying time is 60min, and the moisture of the dried green bricks is controlled within 0.5 wt%.
And step 3, applying a first overglaze on the surface of the dried green brick. The chemical composition of the overglaze comprises: in mass percent, IL:3.5% of SiO 2 ：55％、Al 2 O 3 ：25％、CaO：0.4％、MgO：0.1％、K 2 O：4.5％、Na 2 O:2.5%, znO:9%. The overglaze is applied by spraying glaze, the specific gravity is 1.20, and the glazing quantity is 210g/m 2 。
And 4, performing ink-jet printing on the brick surface to which the first surface glaze is applied to form matte engraving ink. The chemical composition of the powder of the matte engraving ink comprises: in mass percent, IL:3%, siO 2 ：45％、Al 2 O 3 ：24％、BaO：5％、CaO：5％、MgO：2.5％、K 2 O：2.5％、Na 2 O：3.5％、B 2 O 3 ：3％、SrO：3％、ZnO：3.5％。
And 5, applying a second overglaze on the surface of the green brick with the matte engraving ink printed by the ink jet. The chemical composition of the overglaze comprises: in mass percent, IL:3.5% of SiO 2 ：55％、Al 2 O 3 ：25％、CaO：0.4％、MgO：0.1％、K 2 O：4.5％、Na 2 O:2.5%, znO:9%. The overglaze is applied by spraying glaze, the specific gravity is 1.35, and the glazing quantity is 500g/m 2 。
And 6, carrying out ink-jet printing on the surface of the green brick after the second surface glaze is applied.
And 7, applying a cover glaze on the surface of the green brick with the designed pattern printed by the ink jet. The chemical composition of the dry grains of the cover glaze comprises: in mass percent, siO 2 ：48％、Al 2 O 3 ：16％、BaO：6％、CaO：4％、SrO：3.5％、MgO：1％、K 2 O：3.5％、Na 2 O:3%, znO:4%. The application mode of the cover glaze is glaze spraying, the specific gravity is 1.22, and the glaze spraying amount is 190g/m 2 。
And 8, drying the green bricks after the covering glaze is applied in a drying kiln. The drying temperature is 120 ℃, and the moisture of the dried green bricks is controlled within 0.5 weight percent.
And 9, sintering at high temperature in a roller kiln. The highest sintering temperature is 1220 ℃, and the sintering period is 105min.
And 10, performing semi-polishing treatment on the sintered rock plate.
Although the total overglaze glazing of comparative example 1 was comparable to example 1, it was found during the production process that the overglaze was too slowly water-receiving to result in an unsatisfactory shale layering effect of the rock board, nor to show a grey scale difference of the effect net. In addition, the high-temperature overglaze layer has less blocking of the blank bubbles at the high-gray level position of the engraving ink, so that more closed bubbles are formed at the engraving ink position.
Comparative example 2
The preparation method of the rock plate with the shale surface effect comprises the following steps:
and step 1, pressing the low-shrinkage rock plate base material into green bricks.
And 2, drying the green bricks in a drying kiln. The drying temperature is 125 ℃, the drying time is 60min, and the moisture of the dried green bricks is controlled within 0.5 wt%.
And step 3, applying a first overglaze on the surface of the dried green brick. The chemical composition of the overglaze comprises: in mass percent, IL:7 to 8 percent of SiO 2 ：45～47％、Al 2 O 3 ：17～18％、BaO：0.3～0.4％、CaO：7～8％、MgO：4～5％、K 2 O：2～3％、Na 2 O：4～5％、ZrO 2 :5 to 6 percent. The overglaze is applied by spraying glaze, the specific gravity is 1.28, and the glazing quantity is 210g/m 2 。
And 4, performing ink-jet printing on the brick surface to which the first surface glaze is applied to form matte engraving ink. The chemical composition of the powder of the matte engraving ink comprises: in mass percent, IL:3%, siO 2 ：45％、Al 2 O 3 ：24％、BaO：5％、CaO：5％、MgO：2.5％、K 2 O：2.5％、Na 2 O：3.5％、B 2 O 3 ：3％、SrO：3％、ZnO：3.5％。
And 5, applying a second overglaze on the surface of the green brick with the ink-jet printing engraving ink. The chemical composition of the overglaze comprises: in mass percent, IL:7 to 8 percent of SiO 2 ：45～47％、Al 2 O 3 ：17～18％、BaO：0.3～0.4％、CaO：7～8％、MgO：4～5％、K 2 O：2～3％、Na 2 O：4～5％、ZrO 2 :5 to 6 percent. The overglaze is applied by spraying glaze with the ratio ofThe weight is 1.48, and the glazing quantity is 500g/m 2 。
And 6, carrying out ink-jet printing on the surface of the green brick sprayed with the second overglaze to form a design pattern.
And 7, applying a cover glaze on the surface of the green brick with the designed pattern printed by the ink jet. The chemical composition of the dry grains of the cover glaze comprises: in mass percent, siO 2 ：48％、Al 2 O 3 ：16％、BaO：6％、CaO：4％、SrO：3.5％、MgO：1％、K 2 O：3.5％、Na 2 O:3%, znO:4%. The application mode of the cover glaze is glaze spraying, the specific gravity is 1.22, and the glaze spraying amount is 190g/m 2 。
And 8, drying the green bricks after the covering glaze is applied in a drying kiln. The drying temperature is 120 ℃, and the moisture of the dried green bricks is controlled within 0.5 weight percent.
And 9, sintering at high temperature in a roller kiln. The highest sintering temperature is 1220 ℃, and the sintering period is 105min.
And 10, performing semi-polishing treatment on the sintered rock plate.
In comparative example 2, the initial melting temperature is low due to the high flux content of the overglaze, the die effect is unclear, the edge of the engraved ink is smooth, and the shale effect is poor.
Example 2
The preparation method of the rock plate with the shale surface effect comprises the following steps:
and step 1, pressing the low-shrinkage rock plate base material into green bricks.
And 2, drying the green bricks in a drying kiln. The drying temperature is 125 ℃, the drying time is 60min, and the moisture of the dried green bricks is controlled within 0.5 wt%.
And step 3, applying a first overglaze on the surface of the dried green brick. The chemical composition of the overglaze comprises: in mass percent, IL:3.5% of SiO 2 ：55％、Al 2 O 3 ：25％、CaO：0.4％、MgO：0.1％、K 2 O：4.5％、Na 2 O:2.5%, znO:9%. The overglaze is applied by spraying glaze, the specific gravity is 1.28, and the glazing quantity is 210g/m 2 。
Step 4. Applying a first overglazeIs used for printing matte engraving ink on the brick surface. The chemical composition of the powder of the matte engraving ink comprises: in mass percent, IL:3%, siO 2 ：45％、Al 2 O 3 ：24％、BaO：5％、CaO：5％、MgO：2.5％、K 2 O：2.5％、Na 2 O：3.5％、B 2 O 3 ：3％、SrO：3％、ZnO：3.5％。
And 5, applying a second overglaze on the surface of the green brick with the ink-jet printing engraving ink. The chemical composition of the overglaze comprises: in mass percent, IL:3.5% of SiO 2 ：55％、Al 2 O 3 ：25％、CaO：0.4％、MgO：0.1％、K 2 O：4.5％、Na 2 O:2.5%, znO:9%. The overglaze is applied by spraying glaze, the specific gravity is 1.48, and the glazing quantity is 500g/m 2 。
And 6, carrying out ink-jet printing on the surface of the green brick sprayed with the second overglaze to form a design pattern, and then continuing to carry out ink-jet printing on carving ink. The effect screen gray of the ink jet printing engraving ink at this time was 30%.
And 7, applying a cover glaze on the surface of the green brick with the designed pattern printed by the ink jet. The chemical composition of the dry grains of the cover glaze comprises: in mass percent, siO 2 ：48％、Al 2 O 3 ：16％、BaO：6％、CaO：4％、SrO：3.5％、MgO：1％、K 2 O：3.5％、Na 2 O:3%, znO:4%. The application mode of the cover glaze is glaze spraying, the specific gravity is 1.22, and the glaze spraying amount is 190g/m 2 。
And 8, drying the green bricks after the covering glaze is applied in a drying kiln. The drying temperature is 120 ℃, and the moisture of the dried green bricks is controlled within 0.5 weight percent.
And 9, sintering at high temperature in a roller kiln. The highest sintering temperature is 1220 ℃, and the sintering period is 105min.
And 10, performing semi-polishing treatment on the sintered rock plate.
Embodiment 2 can further enhance the mold effect as compared with embodiment 1. This is because supplementing the inkjet printing engraving ink prior to the application of the cover glaze can reduce the impact of the cover glaze on the mold effect and enhance the shale texture presentation.
Claims (6)
1. A method for preparing a rock plate with shale surface effect, which is characterized by comprising the following steps:
applying a first overglaze on the surface of the green brick; the chemical composition of the overglaze comprises: in mass percent, siO 2 ：54～56%、Al 2 O 3 : 22-26%, alkaline earth metal oxide: 0.4 to 0.6 percent of alkali metal oxide: 6 to 8 percent of ZrO 2 : 8-10%; the initial melting temperature of the overglaze is 1150-1180 ℃; the first overglaze is sprayed in a mode that the specific gravity of the first overglaze is 1.25-1.35, and the glazing quantity is 200-300 g/m 2 ；
Printing carving ink on the surface of the adobe after the first overglaze is applied in an ink-jet way, wherein the texture of the carving ink is represented by a gradient effect net with a plurality of gray levels, the gray scale range of the effect net is 10-80%, and the gray scale difference between different gray levels is 20-60%;
applying a second overglaze on the surface of the green brick after the ink is printed and carved; the second overglaze is sprayed in a mode that the specific gravity of the second overglaze is 1.45-1.5, and the glazing quantity is 450-600 g/m 2 ；
Ink-jet printing a design pattern on the surface of the adobe after the second surface glaze is applied;
continuing to print carving ink on the surface of the green brick after the design pattern is printed by ink jet, wherein the gray scale of the effect net of the carving ink is 20-40%;
coating glaze on the surface of the green brick after the design pattern is printed by ink jet; the dry grain composition of the cover glaze comprises: in mass percent, siO 2 ：48～55%、Al 2 O 3 ：16～20%、BaO：6～8%、CaO：4～6%、SrO：3.5～4.5%、MgO：1～2%、K 2 O：3.5～5.5%、Na 2 O：3～4%、ZnO：4～6%；
And firing and polishing the green bricks after the glaze coating is applied to obtain the rock plate with the shale surface effect.
2. According to claim 1The preparation method is characterized in that the chemical composition of the overglaze comprises the following steps: in mass percent, siO 2 ：54～56%、Al 2 O 3 ：22～26%、CaO：0.3～0.4%、MgO：0.1～0.2%、K 2 O：4～5%、Na 2 O：2～3%、ZrO 2 ：8～10%。
3. The method according to claim 1, wherein the cover glaze has an onset temperature of 880-920 ℃.
4. The preparation method according to claim 1, wherein the application mode of the cover glaze is spraying, the specific gravity of the cover glaze is 1.20-1.22, and the glazing amount is 160-250 g/m 2 。
5. The method according to claim 1, wherein the maximum firing temperature is 1220 to 1230 ℃ and the firing period is 105 to 120 minutes.
6. A rock plate with shale surface effect obtained by the preparation method according to claim 1.
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