CN115583844B - Full-polished ceramic tile with concealed carving decoration dry grains and preparation method thereof - Google Patents
Full-polished ceramic tile with concealed carving decoration dry grains and preparation method thereof Download PDFInfo
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- 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
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- 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
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- 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
- C03C8/02—Frit compositions, i.e. in a powdered or comminuted form
- C03C8/04—Frit compositions, i.e. in a powdered or comminuted form containing zinc
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- 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
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Abstract
The invention discloses a full polished ceramic tile with concealed carving decoration dry grains and a preparation method thereof. The preparation method comprises the following steps: applying a first surface glaze serving as a color surface glaze on the surface of the green brick; ink-jet printing oily ink on the surface of the adobe after the first overglaze is applied; applying a second overglaze serving as a high-whiteness overglaze on the surface of the green brick after the oily ink is printed by ink jet; the dark ground color of the first overglaze is exposed at the position where the second overglaze is pulled out by the oily ink, the high white effect is presented at the position where the second overglaze is not pulled out by the oily ink due to the superposition of the first overglaze and the second overglaze, and the three-dimensional dark carving layer is presented by pulling out the color matching combining the dark ground color and the high white effect; the surface Shi Touming glaze of the adobe after the second overglaze is applied promotes the transparent glaze to cover the stripping position of the overglaze layer so as to have the simulation engraving decoration of a bright surface; and drying, sintering and polishing the green bricks subjected to transparent glaze application to obtain the dark carving decoration dry-grain full-polished ceramic tile.
Description
Technical Field
The invention relates to a full-polished ceramic tile with concealed carving decoration dry grains and a preparation method thereof, belonging to the technical field of ceramic tile production and manufacturing.
Background
The ceramic products with polished glaze are various in the market at present. In order to improve the competitiveness of the product, ceramic manufacturers currently provide more color choices, and many works are also performed in terms of improving the added value of the product. Chinese patent CN113183292a discloses a method for preparing ceramic tile with digital controlled mould effect, which comprises designing mould pattern by computer and printing functional ink with release or poking performance on the plane blank by ceramic inkjet printer to form natural relief decorative effect. The ceramic tile with carved texture formed by pulling out special effect ink is mainly an archaized ceramic tile, and is difficult to clean and easy to store dirt due to concave-convex grooves on the glaze surface in the later use process.
Disclosure of Invention
Aiming at the problems, the invention provides the full-polished ceramic tile with the dry grains for the dark carving decoration and the preparation method, wherein the full-polished ceramic tile with the dry grains for the dark carving decoration, which is obtained by combining the concave-convex relief effect presented between overglaze with the full-polished glaze process, has the simulation carving effect, is a bright-surface product, is convenient to clean in the later period, and has wider application range.
In a first aspect, the invention provides a method for preparing a full polished ceramic tile with concealed carving decoration dry grains. The preparation method comprises the following steps:
applying a first surface glaze serving as a color surface glaze on the surface of the green brick;
ink-jet printing oily ink on the surface of the adobe after the first overglaze is applied;
applying a second overglaze serving as a high-whiteness overglaze on the surface of the green brick after the oily ink is printed by ink jet; the dark ground color of the first overglaze is exposed at the position where the second overglaze is pulled out by the oily ink, the high white effect is presented at the position where the second overglaze is not pulled out by the oily ink due to the superposition of the first overglaze and the second overglaze, and the three-dimensional dark carving layer is presented by pulling out the color matching combining the dark ground color and the high white effect;
the surface Shi Touming glaze of the adobe after the second overglaze is applied promotes the transparent glaze to cover the stripping position of the overglaze layer so as to have the simulation engraving decoration of a bright surface;
and drying, sintering and polishing the green bricks subjected to transparent glaze application to obtain the dark carving decoration dry-grain full-polished ceramic tile.
According to the preparation method, the oily ink is adopted between the two overglazes of the first overglaze and the second overglaze to form the undulating texture with the grooves, so that the color gradation is pulled apart to show the dark carving visual effect while the carving decoration is realized. In addition, the transparent glaze layer is matched with the thick transparent glaze layer, so that the transparent glaze is filled to the poking position, the stereoscopic impression is further improved, and the defects of bubbles and the like on the brick surface are avoided.
Preferably, the chemical composition of the base glaze of the first overglaze comprises: in mass percent, siO 2 ：50～52％、Al 2 O 3 :29 to 32 percent of alkaline earth metal oxide: 2.3 to 3.4 percent of alkali metal oxide: 7.0 to 8.9 percent of ZrO 2 :2.9 to 3.5 percent; preferably, the first overglaze further comprises 3-8% of pigment by mass of the base glaze.
Preferably, the initial melting temperature of the first overglaze is 1190-1210 ℃.
Preferably, the first overglaze is sprayed with glaze and has specific gravity of 1.28-1.33 g/cm 3 The glazing amount is 300-320 g/m 2 。
Preferably, the base glaze of the second overglaze has the same chemical composition as the first overglaze; preferably, the second overglaze further comprises zirconium silicate accounting for 3-5% of the mass of the base overglaze.
Preferably, the second overglaze is sprayed with glaze and has specific gravity of 1.45-1.50 g/cm 3 The glazing amount is 700-750 g/m 2 。
Preferably, the transparent glaze comprises a transparent frit with a chemical composition comprising: in mass percent, siO 2 ：63％～66％、Al 2 O 3 ：11％～14％、CaO：11％～13％、MgO：1％～2％、K 2 O：4.2％～5.1％、Na 2 O：0.2％～0.5％、ZnO：1.8％～2.3％。
Preferably, the application mode of the transparent glaze is that the glaze is sprayed, and the glazing quantity is 1000-1200 g/m 2 。
Preferably, the transparent glaze comprises transparent frit with a particle size of 80-250 meshes.
In a second aspect, the invention also provides the dark carving decorative dry grain full-polished ceramic tile obtained by the preparation method.
Drawings
Fig. 1 shows a tile surface effect diagram of the concealed carving decoration dry grain full polished ceramic tile.
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 full polished ceramic tile with the dark carving decoration dry grain.
Pressing the ceramic base material into green bricks. The chemical composition of the ceramic base material is not limited, and the ceramic base material formula commonly used in the field is adopted. In some embodiments, the ceramic base comprises the chemical composition of: in mass percent, siO 2 ：62.0～67.0％、Al 2 O 3 :20.0 to 25.0 percent of alkaline earth metal oxide: 0.2 to 2 percent of alkali metal oxide: 4-7%. For example, the chemical composition of the ceramic base material includes: in mass percent, siO 2 ：62.0～67.0％、Al 2 O 3 ：20.0～25.0％、Fe 2 O 3 ：0.06～0.10％、TiO 2 ：0.10～0.50％、CaO：0.1～0.5％、MgO：0.1～1.0％、K 2 O：2.0～3.0％、Na 2 O:2.5 to 3.5 percent of the flame-out: 4.5 to 6.5 percent.
The green bricks can be prepared by dry press molding. The green bricks can be flat green bricks.
And drying the green bricks. Drying in a drying kiln may be used. The drying time can be 1-1.2 h, and the moisture of the dried green body is controlled within 0.5 wt%.
And applying a first surface glaze serving as a color surface glaze on the surface of the dried green brick. The first overglaze has the functions of covering the ground color and flaws of the green body, promoting the color development of the inkjet ink and avoiding the phenomenon that oily stripping ink directly acts on the green brick to cause the exposed bottom of the brick surface. And the water content of the green bricks after being discharged from the drying kiln is low, so that the flatness of the brick surfaces is poor, and the flatness is improved by applying the first overglaze. In addition, the temperature of the dried green bricks is higher, so that when the oily ink is printed on the surface of the first surface glaze in a subsequent ink-jet mode, the surface glaze layer formed by the first surface glaze is basically dried by heat, and the first surface glaze is basically not repelled with the oily ink to form a poking effect.
The chemical composition of the base glaze of the first overglaze comprises: in mass percent, siO 2 ：50～52％、Al 2 O 3 :29 to 32 percent of alkaline earth metal oxide: 2.3 to 3.4 percent of alkali metal oxide: 7.0 to 8.9 percent of ZrO 2 :2.9 to 3.5 percent. The zirconia content in the first overglaze is not too high, otherwise, the excessive zirconia leads to high viscosity of the first overglaze in a high-temperature state, so that the exhaust of the green brick has resistance, and bubbles cannot be timely discharged out of the glaze layer and are wrapped and remained in the glaze layer, so that the glaze polishing has a large number of needle hole defects.
As an example, the chemical composition of the base glaze of the first overglaze includes: the burning loss is calculated by mass percent: 3.00 to 4.80 percent of SiO 2 ：50.89～51.78％、Al 2 O 3 ：29.87～31.04％、Fe 2 O 3 ：0.21～0.41％、TiO 2 ：0.06～0.08％、CaO：1.25～1.78％、MgO：1.18～1.59％、K 2 O：4.98～5.61％、Na 2 O：2.18～3.24％、ZrO 2 ：2.93～3.25％、ZnO：0.07～0.10％。
The first overglaze is a color overglaze, in particular a dark color overglaze. The color of the overglaze can be realized by adding the pigment with corresponding color into the first overglaze according to the requirement. As an example, the first overglaze further comprises 3-8%, for example 3%, cobalt black by mass of the base glaze. The addition of cobalt black may form a black ground.
The first overglaze is applied by spraying glaze. Some of the realityIn an embodiment, the first overglaze has a specific gravity of 1.28 to 1.33g/cm 3 The glazing amount is 300-320 g/m 2 . The first surface glaze is applied in a thin spraying mode, so that the flatness is high, and meanwhile, the function of wetting the surface of the green brick is achieved. If the first overglaze is excessively applied, the overglaze layer is excessively thick, which is not beneficial to timely discharging of blank bubbles, and a large number of bubbles exist on the glaze layer.
And (3) ink-jet printing oily ink on the surface of the green brick after the first overglaze is applied. And forming an effect net by using the design vector diagram according to the layout, and printing oily ink according to the effect net to obtain a texture pattern. The composition and source of the oily ink are not limited, and the oily ink commonly used in the art may be used.
Before printing the oily ink, the surface temperature of the green brick can be controlled to be 35-40 ℃ to enhance the stripping effect. Of course, the oily ink may not be dried after printing.
And applying a second overglaze on the surface of the green brick after the oily ink is printed by ink jet. The second overglaze may be stripped off by the oily ink to form an undulating texture. The base glaze of the second overglaze preferably has the same formulation as the first overglaze, which can improve the compatibility between the glaze layers.
The first and second overglazes are both tall Wen Mianyou. The low-temperature overglaze is not suitable for the invention, and the grooves are filled by flowing transparent melt formed by the transparent glaze, so that the low-temperature overglaze with lower melting temperature can fill the poking grooves in a high-temperature melt state, thereby the overglaze layer loses the concave-convex decorative effect. The use of a height Wen Mianyou ensures that in the fully molten state of the transparent glaze, it can flow to the grooves between the overglazes, promoting the formation of a three-dimensional engraving. In some embodiments, the onset temperatures of the first and second overglazes are 1190-1210 ℃.
As an example, the chemical composition of the base glaze of the second overglaze includes: in mass percent, siO 2 ：50～52％、Al 2 O 3 :29 to 32 percent of alkaline earth metal oxide: 2.3 to 3.4 percent of alkali metal oxide: 7.0 to 8.9 percent of ZrO 2 :2.9 to 3.5 percent. In some embodiments, the second overglazeThe chemical composition of the base glaze comprises: the burning loss is calculated by mass percent: 3.00 to 4.80 percent of SiO 2 ：50.89～51.78％、Al 2 O 3 ：29.87～31.04％、Fe 2 O 3 ：0.21～0.41％、TiO 2 ：0.06～0.08％、CaO：1.25～1.78％、MgO：1.18～1.59％、K 2 O：4.98～5.61％、Na 2 O：2.18～3.24％、ZrO 2 ：2.93～3.25％、ZnO：0.07～0.10％。
To pull apart the color gradation of the first and second overglazes, the whiteness of the second overglaze may also be continued to be increased. For example, the second overglaze further comprises zirconium silicate in an amount of 3 to 5% by mass, for example 5% by mass, of the base overglaze. The whiteness of the second overglaze can be increased after zirconium silicate is introduced, so that the color layers of the first overglaze and the second color are improved, and the effect of enriching the dark carving decoration is achieved. The whiteness of the second overglaze can be 75-80 degrees. The range of incorporation of zirconium silicate does not substantially affect the onset of melting temperature of the second overglaze.
The second overglaze is applied by spraying glaze. In some embodiments, the second overglaze has a specific gravity of 1.45 to 1.50g/cm 3 The glazing amount is 700-750 g/m 2 . The glazing amount of the second overglaze is higher, so that the poking effect is more obvious, and the poking position has obvious groove detail texture. If the glazing amount of the second overglaze is lower, the second overglaze can be pulled out smoothly, and the concave-convex relief texture cannot be presented. In view of the relatively high amount of glazing of the second overglaze, a high white effect of the second overglaze will be exhibited at the location of the superposition of the first overglaze and the second overglaze. In contrast, the dark ground color of the first overglaze is exposed at the position where the oily ink pulls out the second overglaze, and the color layers are strongly contrasted, so that the undercarved decorative effect is achieved. In some embodiments, the height of the relief texture formed by the second overglaze being pulled apart by the oily ink is between 0.15 and 0.30mm.
The control of the glazing amount of the second surface glaze can be corresponding to the oily ink vector diagram. If the vector image is composed mainly of fine line spots, the glazing amount of the second overglaze can be properly reduced, and the reduction of the groove effect is avoided, because the oil ink is less used and the pulling-out is more resistant.
In order to avoid the phenomenon that the ink-jet pattern shields the concave-convex relief effect and weakens the dark carving, the invention does not need the working procedure of printing the ink-jet pattern.
It is explained here that the technical effect of the present invention cannot be achieved by applying a single-layer overglaze to the bottom of the oily ink and applying a single-layer overglaze to the surface of the oily ink, because: the single-layer overglaze cannot show the hidden carving layers formed by combining the color layer design and the carving decoration, has the defect of single glaze decoration, and cannot obtain the rich glaze decoration layer obtained by adding colors.
The surface Shi Touming of the green brick after the second overglaze is applied is glazed to increase the glaze penetration. Furthermore, the transparent glaze layer with enough thickness can be formed on the surface covered at the pulling-out position after the transparent glaze is melted.
The transparent glaze comprises the following chemical components of transparent frit: in mass percent, siO 2 ：63％～66％、Al 2 O 3 ：11％～14％、CaO：11％～13％、MgO：1％～2％、K 2 O：4.2％～5.1％、Na 2 O:0.2% -0.5%, znO:1.8 to 2.3 percent. As an example, the transparent glaze comprises a transparent frit having a chemical composition comprising: the burning loss is calculated by mass percent: 0.23 to 0.25 percent of SiO 2 ：63.00％～65.90％、Al 2 O 3 ：11.00％～13.95％、CaO：11.00％～13.00％、Fe 2 O 3 ：0.05％～0.20％、TiO 2 ：0.05％～0.10％、MgO：1.00％～2.00％、K 2 O：4.21％～5.10％、Na 2 O:0.23% -0.35%, znO:1.80 to 2.30 percent. Compared with the raw material transparent glaze, the glaze layer formed by the transparent frit has fewer bubbles, and is beneficial to improving the overall penetration of the glaze layer.
The transparent glaze comprises transparent frit with the particle size of 80-250 meshes.
The initial melting temperature of the transparent glaze is 920-1030 ℃. Because the initial melting temperature of the transparent glaze is lower than that of the overglaze, the phenomenon that the overglaze is melted in advance and then the groove is filled in the overglaze is avoided when the melt is formed. In some embodiments, the initial melting temperature of the overglaze is 250 to 290 ℃ above the clear glaze.
The transparent glaze also includes water and a glaze glue in addition to the transparent frit. In some embodiments, the transparent glaze comprises: 45-52 parts of transparent frit, 8-12 parts of water and 38-43 parts of glaze glue. The transparent glaze can be applied by spraying glaze.
The glazing amount of the transparent glaze is 1000-1200 g/m 2 . Through applying a large amount of transparent glaze, under the cover of transparent glaze layer of high thickness, transparent glaze that high temperature viscosity is lower can fill to the position of dialling to can observe dark carving like suspension effect under the glaze with certain angle, improve the artistry of product greatly, the high content glass looks of transparent glaze layer makes the glaze have the emulation sculpture decoration of bright face simultaneously. However, if the transparent glaze layer is too thick, bubbles are not easy to be discharged in time, the bubbles are wrapped in the glaze layer, even if the bubbles exist at the bottom of the transparent glaze layer and do not affect polishing pinholes on the glaze surface, a large number of bubbles can refract and scatter light rays, so that the transmitted light intensity is greatly weakened, and the transparent feeling of the glaze layer is reduced to a certain extent.
And drying the green bricks after transparent glaze application. Electric kiln drying can be adopted. The drying temperature is 110-120 ℃, and the moisture of the dried green bricks is controlled within 0.3 wt%.
And (5) sintering. For example, entering a roller kiln for low-temperature slow burning. According to the invention, the groove part of the overglaze layer is filled with the transparent glaze layer, and the concave-convex feeling exists on the glaze surface after firing. In order to obtain a glaze with higher flatness, the transparent glaze layer is designed to have a certain thickness. In order to promote the discharge of bubbles, a low-temperature slow firing is adopted in a firing system to ensure the mirror surface and the transparency. For example, the firing period is 107 to 110 minutes. The highest sintering temperature (temperature measuring ring temperature) is 1154-1161 ℃, and correspondingly, the highest sintering temperature (kiln apparent temperature) is 1210-1220 ℃.
According to the preparation method of the dark carving decoration dry grain full polished ceramic tile, one side of the glaze is coated on a green brick Bao Pendi, meanwhile, in order to pull the layer away from the second side of the glaze, oily ink with a pulling-out effect is printed through ink jet, a thicker second overglaze is applied, dark carving is realized between two overglaze layers through color matching to distinguish the layer, and finally, a high thick transparent glaze is applied, so that the layer effect of the layout can be realized without ink jet printing patterns.
In addition, the dark carving decoration dry particle full-polished ceramic tile obtained by the preparation method is not a natural archaized surface product which is not required to be polished, but a bright surface full-polished glaze product which is required to be polished later, and the polished glaze has higher flatness, but visually presents concave-convex carving decoration.
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 concealed carving decoration dry grain full polished ceramic tile comprises the following steps:
step 1, pressing a common ceramic base material into a green brick;
step 2, drying the green bricks in a drying kiln for 1-1.2 h, wherein the moisture of the dried green bricks is controlled within 0.5 wt%;
step 3, applying a first overglaze on the surface of the green brick; the chemical composition of the base glaze of the first overglaze comprises: the burning loss is calculated by mass percent: 3.00 to 4.80 percent of SiO 2 ：50.89～51.78％、Al 2 O 3 ：29.87～31.04％、Fe 2 O 3 ：0.21～0.41％、TiO 2 ：0.06～0.08％、CaO：1.25～1.78％、MgO：1.18～1.59％、K 2 O：4.98～5.61％、Na 2 O：2.18～3.24％、ZrO 2 :2.93 to 3.25 percent of ZnO:0.07 to 0.10 percent; the specific gravity of the first overglaze is 1.28-1.33 g/cm 3 The glazing amount is 300-320 g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the The first surface glaze comprises a base glaze and a cobalt black pigment accounting for 3 percent of the mass of the base glaze;
step 4, ink-jet printing oily ink on the surface of the green brick after the first overglaze is applied;
step 5, applying a second overglaze on the surface of the green brick after the oily ink is printed by ink jet; the chemical composition of the base glaze of the second overglaze is the same as that of the first overglaze; the specific gravity of the second overglaze is 1.45-1.50 g/cm 3 The glazing amount is 700-750 g/m 2 ；
Step 6, spraying transparent glaze on the surface of the green brick after the second surface glaze is applied; the transparent glaze comprises the following chemical components of transparent frit: the burning loss is calculated by mass percent: 0.23 to 0.25 percent of SiO 2 ：63.00％～65.90％、Al 2 O 3 ：11.00％～13.95％、CaO：11.00％～13.00％、Fe 2 O 3 ：0.05％～0.20％、TiO 2 ：0.05％～0.10％、MgO：1.00％～2.00％、K 2 O：4.21％～5.10％、Na 2 O:0.23% -0.35%, znO:1.80 to 2.30 percent; the glazing quantity of the transparent glaze is 1000-1200 g/m 2 ；
Step 7, drying the green bricks subjected to transparent glaze application, wherein the drying temperature is 110-120 ℃, and the moisture of the dried green bricks is controlled within 0.3 wt%;
step 8, low-temperature slow firing in a roller kiln, wherein the firing period is 107-110 min, the highest firing temperature (temperature measuring ring temperature) is 1154-1161 ℃, and correspondingly, the highest firing temperature (kiln apparent temperature) is 1210-1220 ℃;
and 9, polishing.
As can be seen from fig. 1, the white area is the effect of the first overglaze and the second overglaze stacked, and the light gray is the ground color exposed after the oily ink peels off the second overglaze. Because the oily ink has a relatively soft poking edge, the transition among the whole layers is natural and not hard, and the white part can be visually seen to show a dark flower-like decorative effect which is suspended in the glaze layer and appears to be hidden.
Example 2
Substantially the same as in example 1, the only difference is that: the second surface glaze comprises zirconium silicate accounting for 5% of the mass of the base glaze in addition to the base glaze.
Comparative example 1
Substantially the same as in example 1, the only difference is that: the chemical composition of the base glaze of the first and second overglazes comprises: the burning loss is calculated by weight percent: 3.84% of SiO 2 ：52.66％、Al 2 O 3 ：28.69％、Fe 2 O 3 ：0.21％、TiO 2 ：0.08％、CaO：1.20％、MgO：1.45％、K 2 O：4.27％、Na 2 O：2.13％、ZrO 2 :5.38%, znO:0.09%. Whitening is generally carried out in overglazes by adding zirconium silicate. When the zirconium content in the overglaze is too high, it can lead to the introduction of radioactive impurities Ra from the zirconium silicate 226 、Th 232 、K 40 Excessive radioactivity of the product exceeds standard, and meanwhile, the high-temperature viscosity of the overglaze is high, so that the exhaust of green bricks is not facilitated, and bubbles are generated on the glaze surface to influence the decoration of the glaze surface.
Comparative example 2
Substantially the same as in example 1, the only difference is that: the chemical composition of the base glaze of the first and second overglazes comprises: IL (burn loss) in weight percent: 4.69%, siO 2 ：58.79％、Al 2 O 3 ：22.78％、Fe 2 O 3 ：0.29％、TiO 2 ：0.15％、CaO：0.96％、MgO：0.21％、K 2 O：2.83％、Na 2 O：3.05％、P 2 O 5 ：0.31％、ZrO 2 :5.94%. At the moment, the initial melting temperature of the overglaze is lower, the second overglaze is pulled out to collapse to a certain extent, and the concave-convex relief decorative effect is lost.
Claims (8)
1. The preparation method of the concealed carving decoration dry grain full polished ceramic tile is characterized by comprising the following steps of:
applying a first surface glaze serving as a color surface glaze on the surface of the green brick; the initial melting temperature of the first overglaze is 1190-1210 ℃, the first overglaze is sprayed in a mode of specific gravity of 1.28-1.33 g/cm 3 The glazing amount is 300-320 g/m 2 ；
Ink-jet printing oily ink on the surface of the adobe after the first overglaze is applied;
in inkjet printingApplying a second overglaze serving as a high-whiteness overglaze on the surface of the green brick after printing the oily ink; the dark ground color of the first overglaze is exposed at the position where the second overglaze is pulled out by the oily ink, the high white effect is presented at the position where the second overglaze is not pulled out by the oily ink due to the superposition of the first overglaze and the second overglaze, and the three-dimensional dark carving layer is presented by pulling out the color matching combining the dark ground color and the high white effect; the initial melting temperature of the second overglaze is 1190-1210 ℃, the application mode of the second overglaze is spraying glaze, and the specific gravity is 1.45-1.50 g/cm 3 The glazing quantity is 700-750 g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the The height of the relief texture formed by the second surface glaze pulled apart by the oily ink is 0.15-0.30 mm;
the surface Shi Touming glaze of the adobe after the second overglaze is applied promotes the transparent glaze to cover the stripping position of the overglaze layer so as to have the simulation engraving decoration of a bright surface; the initial melting temperature of the overglaze is higher than that of the transparent glaze by 250-290 ℃, the initial melting temperature of the transparent glaze is 920-1030 ℃, the application mode of the transparent glaze is that the glaze is sprayed, and the glazing quantity is 1000-1200 g/m 2 ；
And drying, sintering and polishing the green bricks subjected to transparent glaze application to obtain the dark carving decoration dry-grain full-polished ceramic tile.
2. The method of preparing according to claim 1, characterized in that the chemical composition of the base glaze of the first overglaze comprises: in mass percent, siO 2 ：50～52%、Al 2 O 3 :29 to 32 percent of alkaline earth metal oxide: 2.3 to 3.4 percent of alkali metal oxide: 7.0 to 8.9 percent of ZrO 2 ：2.9～3.5%。
3. The method according to claim 2, wherein the first overglaze further comprises 3 to 8% by mass of a coloring material based on the base glaze.
4. The method of preparing according to claim 2, characterized in that the basic glaze of the second overglaze has the same chemical composition as the first overglaze.
5. The method according to claim 4, wherein the second overglaze further comprises zirconium silicate in an amount of 3 to 5% by mass of the base glaze.
6. The method of claim 1, wherein the transparent glaze comprises a transparent frit having a chemical composition comprising: in mass percent, siO 2 ：63%～66%、Al 2 O 3 ：11%～14%、CaO：11%～13%、MgO：1%～2%、K 2 O：4.2%～5.1%、Na 2 O：0.2%～0.5%、ZnO：1.8%～2.3%。
7. The method according to claim 6, wherein the transparent glaze comprises a transparent frit having a particle size of 80 to 250 mesh.
8. The dark engraving dry-grain full-polished ceramic tile obtained by the preparation method according to claim 1.
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| CN115057728B (en) * | 2022-08-19 | 2022-11-01 | 广东兴辉陶瓷集团有限公司 | Production process of positioning stripping dry grain ceramic tile and product thereof |
| CN115872781A (en) * | 2022-12-19 | 2023-03-31 | 佛山欧神诺陶瓷有限公司 | Method for enhancing color development of ceramic tile, ceramic tile and application thereof |
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