Transparent glaze, concave-convex micro-mold texture ceramic plate and preparation method thereof

Abstract

The application provides a transparent glaze, a concave-convex micro-mold texture ceramic plate and a preparation method thereof. The transparent glaze comprises transparent dry particles and glaze slurry with a mass ratio of 1:(4-5.3). Through a specific transparent glaze formula, the melting performance is better, the exhaust is facilitated, the glaze is more dense after firing, the pores are fewer, and after multi-dimensional three-dimensional soft polishing, the ceramic plate can also have good stain resistance without wax treatment. The concave-convex texture effect is formed on the surface of the ceramic plate through the joint action of the ink and the surface glaze layer, and the vertical distance between the concave and convex textures is controlled within the range of 0.35mm, solving the problem that the concave texture is easy to be dirty and difficult to be cleaned during use. In addition, the multi-dimensional soft polishing technology is used in the preparation process of the concave-convex micro-mold texture ceramic plate, a combination of various types of polishing abrasive blocks is adopted, the mesh number is accurately controlled, and the three-dimensional multi-angle polishing treatment is carried out under different polishing pressure conditions, so that the gloss and the roughness of the touch are changed richly.

Description

Technical Field

[0001] This invention relates to the field of building ceramics technology, and in particular to transparent glaze, textured ceramic slabs with concave and convex micro-molds and their preparation methods. Background Technology

[0002] Based on modern designers' pursuit of the ultimate in material texture: disliking pure flatness, monotonous light and shadow, and a singular tactile feel, and advocating the beauty of nature, ceramic tiles with textured surfaces, offering tactile and three-dimensional effects as well as glossy and matte finishes, are increasingly used in modern decoration. The method of creating this textured effect typically involves the interaction between a pre-printed pattern using functional ink and the glaze. The grayscale (ink volume) of the printed pattern and the thickness of the glaze jointly determine the depth of the texture. However, if the texture is too deep, it can easily trap dirt and grime, making it difficult to clean. The resulting glossy and matte finish is also created using functional ink. Because products producing this textured effect are generally not pressure-polished, the surface of the tile is relatively rough to the touch, lacking variations in tactile feel and gloss.

[0003] CN110746203A discloses a ceramic product with a mold-effect texture created using digital technology. The product surface has a three-dimensional, raised mold-effect texture, which is created digitally. The mold-effect texture is formed by a glaze layer, including a pattern layer, creating a textured shape with a depth of 0.5–3 mm on the product surface. This novel digital process replaces traditional physical molds with a mold-effect texture featuring a controllable depth of 0.5–3 mm. Further, the depth of the mold-effect texture is 1–3 mm. More specifically, the depth of the mold-effect texture is 0.5–2 mm.

[0004] CN109574711A discloses a porcelain tile with a finely textured surface and its manufacturing method, comprising a body layer, a glaze layer, a decorative layer, a peelable glaze layer, and a transparent glaze layer. The glaze layer is applied above the body layer, the decorative layer is positioned above the glaze layer, and the peelable glaze layer is positioned above the decorative layer. The manufacturing method of the porcelain tile with a finely textured surface includes the following steps: Step 1, manufacturing the body layer; Step 2, applying glaze to the surface; Step 3, printing the decorative layer; Step 4, printing the peelable glaze layer; Step 5, applying a transparent glaze; Step 6, firing and polishing. This solution, through the rational use of peelable ink, yields a low-cost marble-patterned ceramic tile and its preparation process, where the width and depth of the texture can be strictly controlled through process conditions.

[0005] Therefore, how to achieve ceramic slab products with textured surfaces that offer variations in tactile feel and gloss, while also being easy to clean and stain-resistant, through technological innovation is a key area of ​​research and development in the industry.

[0006] In view of this, the present invention is hereby proposed. Summary of the Invention

[0007] One of the objectives of this invention is to provide a transparent glaze. This invention, through a specific transparent glaze formula, has better melting performance, facilitates air venting, and makes the glaze denser and less pore-filled after firing. After multi-dimensional three-dimensional soft polishing, it can also have good anti-fouling properties without waxing.

[0008] The second objective of this invention is to provide a method for preparing a transparent glaze, the method comprising the following steps: preparing a glaze slurry: mixing the protective glaze, barium slurry, and suspending agent to obtain a glaze slurry; preparing a transparent glaze: mixing the transparent dry particles and the glaze slurry to obtain the transparent glaze.

[0009] The third objective of this invention is to provide a ceramic slab with a textured surface, which creates a textured effect on the surface of the ceramic slab by peeling off the ink and the surface glaze layer. In particular, the vertical distance between the depressions and protrusions of the texture is controlled within 0.35mm, solving the problem that the texture depressions are easy to get dirty and difficult to clean during use. Moreover, the transparent glaze adopts the above-mentioned specific transparent glaze formula, which makes the glaze layer denser after firing and has fewer pores. After multi-dimensional three-dimensional soft polishing, it can also have good anti-fouling performance without waxing.

[0010] The fourth objective of this invention is to provide a method for preparing ceramic slabs with a textured surface, which employs multi-dimensional soft polishing technology. This method combines various types of polishing blocks and controls the mesh size precisely. Under different polishing pressures, the slabs undergo three-dimensional multi-angle polishing to create rich variations in gloss and tactile texture.

[0011] In order to achieve the above-mentioned objectives of the present invention, the following technical solution is adopted:

[0012] In a first aspect, the present invention provides a transparent glaze, the transparent glaze comprising transparent dry granules and glaze slurry in a mass ratio of 1:(4-5.3);

[0013] The translucent dry granules comprise the following components by mass percentage: SiO2 51-54%, Al2O3 17.2-19.5%, CaO 5-6%, MgO 1-1.6%, K2O 3-3.6%, Na2O 3.1-4.2%, ZnO 7-9%, SrO 6-6.6%, with the remainder being loss on ignition and impurities;

[0014] The glaze slurry comprises the following components by mass percentage: 57.5-61.5% suspending agent, 36-39% protective glaze, and 2.5-3.5% barium paste;

[0015] The protective glaze comprises the following components by mass percentage: SiO2 46-48%, Al2O3 16-18%, CaO 4.3-5.5%, MgO 3.2-4%, K2O 3.2-4.3%, Na2O 2.2-3%, BaO 8.5-10%, ZnO 5.8-6.6%, SrO 0.7-1.1%, with the remainder being loss on ignition and impurities.

[0016] In this invention, the aforementioned specific transparent glaze formula is used, in which the transparent dry granule glaze allows for a wider color gamut, purer colors, and a higher aesthetic appeal, ensuring that even dark-colored products remain clear and transparent. The special glaze formula has better melting properties, facilitates air venting, and makes the glaze denser after firing with fewer pores. After multi-dimensional soft polishing, it can achieve excellent stain resistance without the need for waxing.

[0017] In this invention, the specific transparent glaze formula described above maintains greater stability during the production process. The 6-6.6% strontium oxide in the transparent dry granules triggers the formation of eutectic compounds in the glaze slurry at a low melting temperature, resulting in a liquid phase and effectively reducing the firing temperature. Furthermore, the strontium carbonate and barium carbonate in the transparent glaze formula decompose at low temperatures during firing, promoting rapid degassing in the glaze layer. This results in fewer pores, higher density, and better anti-fouling properties. Moreover, the transparent glaze formula of this invention forms more crystalline substances (approximately 90%) after firing. Since the content of crystalline substances determines the surface wear resistance of the product, this invention offers superior wear resistance. The higher content of alkaline earth metals such as calcium, barium, and magnesium effectively increases the high-temperature viscosity of the glaze during the low-temperature firing process, reducing its fluidity, preventing the melting and leveling of uneven areas, and maintaining a better three-dimensional textured effect.

[0018] The mass ratio of the translucent dry particles to the glaze slurry is 1:(4-5.3), for example, 1:4, 1:4.2, 1:4.4, 1:4.6, 1:4.8, 1:5, 1:5.2, 1:5.3, etc. This ratio is limited to this range to prevent the unevenness of the glaze layer, maintain a better three-dimensional effect, and ensure a denser glaze layer with fewer pores after firing. If the proportion of translucent dry particles is too low and the glaze slurry content is too high, the dry particles, being amorphous, require more reaction time for the crystalline phase in the glaze layer to transform from crystalline to amorphous during firing. This increases the firing temperature, making the glaze surface dull and leading to increased melting and a poor three-dimensional effect. Conversely, if the proportion of translucent dry particles is too high and the glaze slurry content is too low, the glaze melting time will be too early and mismatched with the firing curve of the base, easily leading to overfiring, large deformation of the body, and numerous surface quality defects such as pinholes.

[0019] Based on the total mass of the chemical composition of the translucent dry granules as 100%, the SiO2 content is 51-54%, for example, it can be 51%, 51.5%, 52%, 52.5%, 53%, 53.5%, 54%, etc.

[0020] Based on the total mass of the chemical composition of the translucent dry granules as 100%, the content of Al2O3 is 17.2% to 19.5%, for example, it can be 17.2%, 17.5%, 18%, 18.5%, 19%, 19.5%, etc.

[0021] Based on the total mass of the chemical composition of the translucent dry granules as 100%, the content of CaO is 5-6%, for example, it can be 5%, 5.2%, 5.4%, 5.6%, 5.8%, 6%, etc.

[0022] Based on the total mass of the chemical composition of the translucent dry granules as 100%, the content of MgO is 1 to 1.6%, for example, it can be 1%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, etc.

[0023] Based on the total mass of the chemical composition of the translucent dry granules as 100%, the K2O content is 3-3.6%, for example, it can be 3%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, etc.

[0024] Based on the total mass of the chemical composition of the translucent dry granules as 100%, the content of Na2O is 3.1% to 4.2%, for example, it can be 3.1%, 3.2%, 3.4%, 3.6%, 3.8%, 4%, 4.2%, etc.

[0025] Based on the total mass of the chemical composition of the translucent dry granules as 100%, the ZnO content is 7-9%, for example, it can be 7%, 7.5%, 8%, 8.5%, 9%, etc.

[0026] Based on the total mass of the chemical composition of the translucent dry granules as 100%, the content of SrO is 6-6.6%, for example, it can be 6%, 6.1%, 6.2%, 6.3%, 6.4%, 6.5%, 6.6%, etc.

[0027] Based on the total mass of the glaze slurry as 100%, the content of the suspending agent is 57.5% to 61.5%, for example, it can be 57.5%, 58%, 59%, 60%, 60.5%, 61.5%, etc.

[0028] Based on the total mass of the glaze slurry as 100%, the content of the protective glaze is 36-39%, for example, it can be 36%, 36.5%, 37%, 37.5%, 38%, 38.5%, 39%, etc.

[0029] Based on the total mass of the glaze slurry as 100%, the content of the barium slurry is 2.5% to 3.5%, for example, it can be 2.5%, 2.6%, 2.8%, 3%, 3.2%, 3.5%, etc.

[0030] Based on the total mass of the chemical composition of the protective glaze as 100%, the SiO2 content is 46-48%, for example, it can be 46%, 46.5%, 47%, 47.5%, 48%, etc.

[0031] Based on the total mass of the chemical composition of the protective glaze as 100%, the content of Al2O3 is 16-18%, for example, it can be 16%, 16.5%, 17%, 17.5%, 18%, etc.

[0032] Based on the total mass of the chemical composition of the protective glaze as 100%, the content of CaO is 4.3% to 5.5%, for example, it can be 4.3%, 4.6%, 4.8%, 5%, 5.2%, 5.3%, 5.5%, etc.

[0033] Based on the total mass of the chemical composition of the protective glaze as 100%, the content of MgO is 3.2% to 4%, for example, it can be 3.2%, 3.4%, 3.6%, 3.8%, 4%, etc.

[0034] Based on the total mass of the chemical composition of the protective glaze as 100%, the K2O content is 3.2% to 4.3%, for example, it can be 3.2%, 3.4%, 3.6%, 3.8%, 4%, 4.3%, etc.

[0035] Based on the total mass of the chemical composition of the protective glaze as 100%, the content of Na2O is 2.2% to 3%, for example, it can be 2.2%, 2.4%, 2.6%, 2.8%, 3%, etc.

[0036] Based on the total mass of the chemical composition of the protective glaze as 100%, the content of BaO is 8.5% to 10%, for example, it can be 8.5%, 8.6%, 8.8%, 9%, 9.5%, 10%, etc.

[0037] Based on the total mass of the chemical composition of the protective glaze as 100%, the ZnO content is 5.8% to 6.6%, for example, it can be 5.8%, 6%, 6.2%, 6.4%, 6.6%, etc.

[0038] Based on the total mass of the chemical composition of the protective glaze as 100%, the content of SrO is 0.7% to 1.1%, for example, it can be 0.7%, 0.8%, 0.9%, 1%, 1.1%, etc.

[0039] Preferably, the transparent glaze comprises, by weight percentage: 16-20% transparent dry particles and 80-84% glaze slurry.

[0040] Based on the total mass of the transparent glaze as 100%, the content of the transparent dry particles is 16% to 20%, for example, it can be 16%, 17%, 18%, 19%, 20%, etc.

[0041] Based on the total mass of the transparent glaze as 100%, the content of the glaze slurry is 80-84%, for example, it can be 80%, 81%, 82%, 83%, 84%, etc.

[0042] Preferably, the transparent glaze comprises the following components by mass percentage: SiO2 45-48.2%, Al2O3 16-17.6%, CaO 4.4-5.3%, MgO 2.1-2.8%, K2O 2.9-3.6%, Na2O 2.6-3.2%, BaO 9-10.2%, ZnO 6-7%, SrO 2.7-3.2%, with the remainder being loss on ignition and impurities.

[0043] Based on the total mass of the chemical composition of the transparent glaze as 100%, the SiO2 content is 45-48.2%, for example, it can be 45%, 46%, 47%, 48%, 48.2%, etc.

[0044] Based on the total mass of the chemical composition of the transparent glaze as 100%, the content of Al2O3 is 16-17.6%, for example, it can be 16%, 16.2%, 16.5%, 17%, 17.4%, 17.6%, etc.

[0045] Based on the total mass of the chemical composition of the transparent glaze as 100%, the content of CaO is 4.4% to 5.3%, for example, it can be 4.4%, 4.6%, 4.8%, 5%, 5.1%, 5.3%, etc.

[0046] Based on the total mass of the chemical composition of the transparent glaze as 100%, the content of MgO is 2.1% to 2.8%, for example, it can be 2.1%, 2.2%, 2.4%, 2.6%, 2.8%, etc.

[0047] Based on the total mass of the chemical composition of the transparent glaze as 100%, the K2O content is 2.9% to 3.6%, for example, it can be 2.9%, 3%, 3.2%, 3.4%, 3.6%, etc.

[0048] Based on the total mass of the chemical composition of the transparent glaze as 100%, the content of Na2O is 2.6% to 3.2%, for example, it can be 2.6%, 2.8%, 3%, 3.2%, etc.

[0049] Based on the total mass of the chemical composition of the transparent glaze as 100%, the content of BaO is 9 to 10.2%, for example, it can be 9%, 9.2%, 9.4%, 9.6%, 9.8%, 10%, 10.2%, etc.

[0050] Based on the total mass of the chemical composition of the transparent glaze as 100%, the ZnO content is 6-7%, for example, it can be 6%, 6.2%, 6.4%, 6.6%, 6.8%, 7%, etc.

[0051] Based on the total mass of the chemical composition of the transparent glaze as 100%, the content of SrO is 2.7% to 3.2%, for example, it can be 2.7%, 2.8%, 2.9%, 3%, 3.1%, 3.2%, etc.

[0052] Preferably, the raw materials for preparing the translucent dry granules include, by weight, 13-17 parts quartz, 34-38 parts potassium feldspar, 6-8 parts kaolin, 4-6 parts calcined talc, 9-11 parts limestone, 5-6 parts calcite, 6-8 parts alumina, 7-9 parts zinc oxide, and 6-7 parts strontium carbonate.

[0053] In the raw materials for preparing the translucent dry granules, the content of quartz is 13 to 17 parts, for example, it can be 13 parts, 14 parts, 14.5 parts, 15 parts, 15.5 parts, 16 parts, 17 parts, etc.

[0054] In the raw materials for preparing the translucent dry granules, the content of potassium feldspar is 34 to 38 parts, for example, it can be 34 parts, 35 parts, 35.5 parts, 36 parts, 36.5 parts, 37 parts, 38 parts, etc.

[0055] In the raw materials for preparing the translucent dry granules, the content of kaolin is 6 to 8 parts, for example, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, etc.

[0056] In the raw materials for preparing the translucent dry granules, the content of calcined talc is 4 to 6 parts, for example, 4 parts, 4.5 parts, 5 parts, 5.5 parts, 6 parts, etc.

[0057] In the raw materials for preparing the translucent dry granules, the content of limestone is 9 to 11 parts, for example, it can be 9 parts, 9.5 parts, 10 parts, 10.5 parts, 11 parts, etc.

[0058] In the raw materials for preparing the translucent dry granules, the content of calcite is 5 to 6 parts, for example, 5 parts, 5.2 parts, 5.4 parts, 5.6 parts, 5.8 parts, 6 parts, etc.

[0059] In the raw materials for preparing the translucent dry granules, the content of alumina is 6 to 8 parts, for example, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, etc.

[0060] In the raw materials for preparing the translucent dry granules, the content of zinc oxide is 7 to 9 parts, for example, 7 parts, 7.5 parts, 8 parts, 8.5 parts, 9 parts, etc.

[0061] In the raw materials for preparing the translucent dry granules, the content of strontium carbonate is 6 to 7 parts, for example, 6 parts, 6.2 parts, 6.4 parts, 6.6 parts, 6.8 parts, 7 parts, etc.

[0062] Preferably, the raw materials for preparing the protective glaze include, by weight, 26-30 parts potassium feldspar, 18-22 parts sodium feldspar, 7-9 parts dolomite, 6-8 parts calcite, 8-10 parts kaolin, 6-7 parts calcined kaolin, 4-6 parts calcined talc, 9-11 parts barium carbonate, and 6-7 parts zinc oxide.

[0063] In the raw materials for preparing the protective glaze, the content of potassium feldspar is 26 to 30 parts, for example, 26 parts, 27 parts, 27.5 parts, 28 parts, 28.5 parts, 29 parts, 30 parts, etc.

[0064] In the raw materials for preparing the protective glaze, the content of albite is 18 to 22 parts, for example, it can be 18 parts, 19 parts, 19.5 parts, 20 parts, 20.5 parts, 21 parts, 22 parts, etc.

[0065] In the raw materials for preparing the protective glaze, the content of dolomite is 7 to 9 parts, for example, 7 parts, 7.5 parts, 8 parts, 8.5 parts, 9 parts, etc.

[0066] In the raw materials for preparing the protective glaze, the content of calcite is 6 to 8 parts, for example, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, etc.

[0067] In the raw materials for preparing the protective glaze, the content of kaolin is 8 to 10 parts, for example, 8 parts, 8.5 parts, 9 parts, 9.5 parts, or 10 parts.

[0068] In the raw materials for preparing the protective glaze, the content of calcined kaolin is 6 to 7 parts, for example, 6 parts, 6.2 parts, 6.4 parts, 6.6 parts, 6.8 parts, 7 parts, etc.

[0069] In the raw materials for preparing the protective glaze, the content of calcined talc is 4 to 6 parts, for example, 4 parts, 4.5 parts, 5 parts, 5.5 parts, 6 parts, etc.

[0070] In the raw materials for preparing the protective glaze, the content of barium carbonate is 9 to 11 parts, for example, it can be 9 parts, 9.5 parts, 10 parts, 10.5 parts, 11 parts, etc.

[0071] In the raw materials for preparing the protective glaze, the content of zinc oxide is 6 to 7 parts, for example, 6 parts, 6.2 parts, 6.4 parts, 6.6 parts, 6.8 parts, 7 parts, etc.

[0072] Preferably, the raw materials for preparing the barium slurry include, by weight, 100 parts barium carbonate, 40-44 parts water, and 0.1-1 parts suspending agent.

[0073] In the raw materials for preparing the barium slurry, the water content is 40 to 44 parts, for example, 40 parts, 41 parts, 42 parts, 43 parts, 44 parts, etc.

[0074] In the raw materials for preparing the barium slurry, the content of the suspending agent is 0.1 to 1 part, for example, it can be 0.1 part, 0.2 part, 0.4 part, 0.6 part, 0.8 part, 1 part, etc.

[0075] In a second aspect, the present invention provides a method for preparing a transparent glaze as described in the first aspect, the method comprising the following steps:

[0076] Preparation of glaze slurry: The protective glaze, barium paste, and suspending agent are mixed to obtain the glaze slurry;

[0077] Preparation of transparent glaze: The transparent glaze is obtained by mixing the transparent dry granules and glaze slurry.

[0078] Preferably, the translucent dry granules are prepared by the following steps: according to the element ratio of the translucent dry granules, raw materials of corresponding elements are mixed and calcined to obtain the translucent dry granules.

[0079] Preferably, during the preparation process of the translucent dry granules, the calcination temperature is 1400-1500℃, for example, 1400℃, 1420℃, 1440℃, 1460℃, 1480℃, 1500℃, etc.

[0080] Preferably, the calcination of the translucent dry granules includes a cooling step after calcination (i.e., rapidly cooling the calcined glass melt through a water bath and / or water-cooled metal rollers to produce coarse products of broken glass flakes and / or granules).

[0081] Preferably, the calcination of the translucent dry granules includes a crushing step after cooling during the preparation process (that is, crushing the crude product obtained after cooling into powder particles with a particle size of 100-200 mesh, such as 100 mesh, 120 mesh, 140 mesh, 160 mesh, 180 mesh, 200 mesh, etc.).

[0082] Preferably, the translucent dry granules are prepared by the following steps:

[0083] Mixing: Weigh out quartz, potassium feldspar, kaolin, calcined talc, limestone, calcite, alumina, zinc oxide and strontium carbonate according to the element ratio of the transparent dry granules, and mix them.

[0084] Calcination: The above mixture is calcined and melted at a high temperature of 1400-1500℃ to obtain glass melt;

[0085] Cooling: The above-mentioned glass melt is rapidly cooled to produce coarse products in the form of broken glass flakes and / or granules;

[0086] Crushing: The above coarse product is crushed into powder particles with a particle size of 100-200 mesh to obtain the translucent dry particles.

[0087] Preferably, the protective glaze is prepared by the following steps: according to the element ratio of the protective glaze, the raw materials of the corresponding elements are added to a ball mill with water, suspending agent and degumming agent, mixed, ball milled and aged to obtain the protective glaze.

[0088] Preferably, the raw materials for preparing the protective glaze include, by weight, 26-30 parts potassium feldspar, 18-22 parts sodium feldspar, 7-9 parts dolomite, 6-8 parts calcite, 8-10 parts kaolin, 6-7 parts calcined kaolin, 4-6 parts calcined talc, 9-11 parts barium carbonate, and 6-7 parts zinc oxide.

[0089] Preferably, the raw materials for preparing the protective glaze further include, by weight, 24-32 parts water, 0.05-0.5 parts suspending agent, and 0.1-0.6 parts desiccant.

[0090] In the raw materials for preparing the protective glaze, the water content is 24 to 32 parts, for example, 24 parts, 26 parts, 28 parts, 30 parts, 32 parts, etc.

[0091] In the raw slurry for preparing the protective glaze, the content of the suspending agent is 0.05 to 0.5 parts, for example, it can be 0.05 parts, 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, etc.

[0092] In the raw materials for preparing the protective glaze, the content of the degumming agent is 0.1 to 0.6 parts, for example, it can be 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, etc.

[0093] Preferably, during the preparation of the protective glaze, the ball milling time is 8 to 10 hours (using a 10T ball mill), for example, 8 hours, 8.5 hours, 9 hours, 9.5 hours, 10 hours, etc., and the ball milling speed is 16 to 18 r / min.

[0094] Preferably, during the preparation of the protective glaze, a sieving step is required after ball milling (i.e., the ball-milled slurry is passed through a 325-mesh sieve).

[0095] Preferably, the protective glaze is aged for 30 to 35 hours during preparation, for example, 30 hours, 31 hours, 32 hours, 33 hours, 34 hours, or 35 hours, and the aging temperature is room temperature.

[0096] Preferably, the protective glaze is prepared by the following steps:

[0097] Mixing: According to the element ratio of the protective glaze, weigh out potassium feldspar, sodium feldspar, dolomite, calcite, kaolin, calcined kaolin, calcined talc, barium carbonate, zinc oxide, water, suspending agent and desiccant, and add them to a ball mill for mixing;

[0098] Ball milling: The above mixture is ball milled at a speed of 16-18 r / min for 8-10 hours;

[0099] Sieving: Pass the ball-milled slurry through a 325-mesh sieve;

[0100] Aging: The sieved slurry is aged at room temperature for 30-35 hours to obtain the protective glaze.

[0101] Preferably, the barium slurry is prepared by the following steps: mixing barium carbonate, a suspending agent, and water, and then ball milling the mixture to obtain the barium slurry.

[0102] Preferably, during the preparation of the barium slurry, the ball milling time is 0.5 to 2 hours (using a 0.5T ball mill), for example, 0.5 hours, 0.6 hours, 0.8 hours, 1 hour, 1.2 hours, 1.5 hours, 2 hours, etc., and the ball milling speed is 21 to 23 r / min, for example, 21 r / min, 21.5 r / min, 22 r / min, 22.5 r / min, 23 r / min, etc.

[0103] Preferably, the barium slurry requires a sieving step after ball milling during preparation (i.e., the ball-milled slurry is passed through a 325-mesh sieve).

[0104] Preferably, the barium slurry is prepared by the following steps:

[0105] Mixing: Weigh out barium carbonate, suspending agent and water according to the formula and add them to the ball mill for mixing;

[0106] Ball milling: The above mixture is ball milled at a speed of 21-23 r / min for 0.5-2 h;

[0107] Sieving: The ball-milled slurry is passed through a 325-mesh sieve to obtain the barium slurry.

[0108] Thirdly, the present invention provides a ceramic plate with a concave-convex micro-mold texture, the ceramic plate comprising a body layer, a surface glaze layer, an inkjet pattern layer and a transparent glaze layer stacked sequentially.

[0109] The transparent glaze layer includes the transparent glaze as described in the first aspect;

[0110] The body layer and the glaze layer also include a peeling ink layer, which includes peeling ink. The peeling ink and the glaze layer work together to form a textured surface. The maximum vertical distance between the convex and concave surfaces of the texture is less than 0.35 mm, for example, it can be 0.35 mm, 0.3 mm, 0.25 mm, 0.2 mm, 0.15 mm, 0.1 mm, 0.05 mm, etc.

[0111] In this invention, firstly, the peeled ink and the surface glaze layer work together to form a textured surface, and the vertical distance between the depressions and protrusions of the texture is controlled within 0.35mm, solving the problem of dirt easily getting trapped and difficult to clean during use. Secondly, the transparent glaze layer includes the transparent glaze described in the first aspect, that is, it adopts the specific glaze formula and transparent dry particle technology of the first aspect. The transparent dry particles allow for a wider color gamut, purer color, and higher product aesthetics. Even dark products can remain transparent and not appear cloudy. Furthermore, through innovative improvements to the glaze formula, the glaze layer becomes denser after firing with fewer pores. After multi-dimensional three-dimensional soft polishing, it can also have good anti-fouling properties without the need for waxing.

[0112] Preferably, the peeling ink comprises, by weight, 20-24 parts of peeling glaze and 68-72 parts of organic solvent.

[0113] In the peeling ink, the content of the peeling glaze is 20 to 24 parts, for example, 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, etc.

[0114] The content of organic solvent in the peeling ink is 68 to 72 parts, for example, 68 parts, 69 parts, 70 parts, 71 parts, 72 parts, etc.

[0115] Preferably, the peeling ink also includes optional functional additives.

[0116] Preferably, the functional additive is selected from any one or a combination of at least two of the dispersants, defoamers, or antisettling agents.

[0117] Preferably, the peeling ink further comprises, by weight, 3-7 parts of dispersant, 1-2 parts of defoamer, and 1-2 parts of anti-settling agent.

[0118] In the peeling ink, the content of dispersant is 3 to 7 parts, for example, it can be 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts, 5.5 parts, 6 parts, 7 parts, etc.

[0119] In the peeled ink, the content of defoamer is 1 to 2 parts, for example, it can be 1 part, 1.2 parts, 1.4 parts, 1.6 parts, 1.8 parts, 2 parts, etc.

[0120] In the peeled ink, the content of the anti-settling agent is 1 to 2 parts, for example, it can be 1 part, 1.2 parts, 1.4 parts, 1.6 parts, 1.8 parts, 2 parts, etc.

[0121] Preferably, the stripping glaze comprises the following components by mass percentage: 70-76% SiO2, 16-22% Al2O3, 4-6% Na2O, with the remainder being loss on ignition and impurities.

[0122] Based on the total mass of the chemical composition of the peeling glaze as 100%, the SiO2 content is 70-76%, for example, it can be 70%, 71%, 72%, 73%, 74%, 75%, 76%, etc.

[0123] Based on the total mass of the chemical composition of the peeling glaze as 100%, the Al2O3 content is 16-22%, for example, it can be 16%, 17%, 18%, 19%, 20%, 21%, 22%, etc.

[0124] Based on the total mass of the chemical composition of the peeling glaze as 100%, the Na2O content is 4-6%, for example, it can be 4%, 4.5%, 5%, 5.5%, 6%, etc.

[0125] Preferably, the raw materials for preparing the peeling glaze include, by weight, 51-55 parts quartz, 18-22 parts calcined kaolin, 7-9 parts corundum, 9-11 parts kaolin, and 8-10 parts sodium carbonate.

[0126] In the raw materials for preparing the peeling glaze, the content of quartz is 51 to 55 parts, for example, it can be 51 parts, 51.5 parts, 52 parts, 52.5 parts, 53 parts, 53.5 parts, 54 parts, 54.5 parts, 55 parts, etc.

[0127] In the raw materials for preparing the peeling glaze, the content of calcined kaolin is 18 to 22 parts, for example, it can be 18 parts, 18.5 parts, 19 parts, 19.5 parts, 20 parts, 20.5 parts, 21 parts, 22 parts, etc.

[0128] In the raw materials for preparing the peeling glaze, the content of corundum is 7 to 9 parts, for example, it can be 7 parts, 7.2 parts, 7.5 parts, 7.8 parts, 8 parts, 8.2 parts, 8.5 parts, 8.8 parts, 9 parts, etc.

[0129] In the raw materials for preparing the peeling glaze, the content of kaolin is 9 to 11 parts, for example, it can be 9 parts, 9.2 parts, 9.5 parts, 9.8 parts, 10 parts, 10.2 parts, 10.5 parts, 10.8 parts, 11 parts, etc.

[0130] In the raw materials for preparing the peeling glaze, the content of sodium carbonate is 8 to 10 parts, for example, it can be 8 parts, 8.2 parts, 8.5 parts, 8.8 parts, 9 parts, 9.2 parts, 9.5 parts, 9.8 parts, 10 parts, etc.

[0131] Preferably, the surface glaze layer comprises a surface glaze, which, by mass percentage, comprises the following components: SiO2 48-52%, Al2O3 19-21%, K2O 3.3-4%, Na2O 4.8-5.5%, CaO 2.1-2.8%, MgO 0.5-1%, BaO 3.8-4.5%, ZnO 0.8-1.3%, ZrO2 5-6%, with the remainder being loss on ignition and impurities.

[0132] Based on the total mass of the chemical composition of the glaze as 100%, the SiO2 content is 48-52%, for example, it can be 48%, 49%, 50%, 51%, 52%, etc.

[0133] Based on the total mass of the chemical composition of the glaze as 100%, the content of Al2O3 is 19-21%, for example, it can be 19%, 19.5%, 20%, 20.5%, 21%, etc.

[0134] Based on the total mass of the chemical composition of the glaze as 100%, the K2O content is 3.3% to 4%, for example, it can be 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, 4%, etc.

[0135] Based on the total mass of the chemical composition of the glaze as 100%, the content of Na2O is 4.8% to 5.5%, for example, it can be 4.8%, 5%, 5.1%, 5.2%, 5.3%, 5.4%, 5.5%, etc.

[0136] Based on the total mass of the chemical composition of the glaze as 100%, the CaO content is 2.1% to 2.8%, for example, it can be 2.1%, 2.2%, 2.4%, 2.6%, 2.8%, etc.

[0137] Based on the total mass of the chemical composition of the glaze as 100%, the content of MgO is 0.5% to 1%, for example, it can be 0.5%, 0.6%, 0.8%, 0.9%, 1%, etc.

[0138] Based on the total mass of the chemical composition of the glaze as 100%, the content of MgO is 0.5% to 1%, for example, it can be 0.5%, 0.6%, 0.8%, 0.9%, 1%, etc.

[0139] Based on the total mass of the chemical composition of the glaze as 100%, the content of BaO is 3.8% to 4.5%, for example, it can be 3.8%, 3.9%, 4%, 4.1%, 4.2%, 4.5%, etc.

[0140] Based on the total mass of the chemical composition of the glaze as 100%, the ZnO content is 0.8% to 1.3%, for example, it can be 0.8%, 0.9%, 1%, 1.2%, 1.3%, etc.

[0141] Based on the total mass of the chemical composition of the glaze as 100%, the ZrO2 content is 5-6%, for example, it can be 5%, 5.2%, 5.4%, 5.6%, 5.8%, 6%, etc.

[0142] Preferably, the raw materials for preparing the glaze include, by weight, 32-36 parts of potassium feldspar, 15-19 parts of sodium feldspar, 6-8 parts of wollastonite, 7-9 parts of calcite, 12-16 parts of kaolin, 5-7 parts of calcined talc, 3-5 parts of barium carbonate, and 9-11 parts of zirconium silicate.

[0143] In the raw materials for preparing the glaze, the content of potassium feldspar is 32 to 36 parts, for example, 32 parts, 33 parts, 33.5 parts, 34 parts, 34.5 parts, 35 parts, 36 parts, etc.

[0144] In the raw materials for preparing the glaze, the content of albite is 15 to 19 parts, for example, 15 parts, 16 parts, 16.5 parts, 17 parts, 17.5 parts, 18 parts, 19 parts, etc.

[0145] In the raw materials for preparing the glaze, the content of wollastonite is 6 to 8 parts, for example, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, etc.

[0146] In the raw materials for preparing the glaze, the content of calcite is 7 to 9 parts, for example, 7 parts, 7.5 parts, 8 parts, 8.5 parts, 9 parts, etc.

[0147] In the raw materials for preparing the glaze, the content of kaolin is 12 to 16 parts, for example, 12 parts, 13 parts, 13.5 parts, 14 parts, 14.5 parts, 15 parts, 16 parts, etc.

[0148] In the raw materials for preparing the glaze, the content of calcined talc is 5 to 7 parts, for example, 5 parts, 5.5 parts, 6 parts, 6.5 parts, 7 parts, etc.

[0149] In the raw materials for preparing the glaze, the content of barium carbonate is 3 to 5 parts, for example, 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts, etc.

[0150] In the raw materials for preparing the glaze, the content of zirconium silicate is 9 to 11 parts, for example, it can be 9 parts, 9.5 parts, 10 parts, 10.5 parts, 11 parts, etc.

[0151] Preferably, the raw materials for preparing the glaze further include, by weight, 24-32 parts water, 0.05-0.3 parts suspending agent, and 0.1-0.5 parts desiccant.

[0152] In the raw materials for preparing the glaze, the water content is 24 to 32 parts, for example, 24 parts, 25 parts, 26 parts, 28 parts, 30 parts, 32 parts, etc.

[0153] In the raw materials for preparing the glaze, the content of the suspending agent is 0.05 to 0.3 parts, for example, it can be 0.05 parts, 0.1 parts, 0.2 parts, 0.3 parts, etc.

[0154] In the raw materials for preparing the glaze, the content of the degumming agent is 0.1 to 0.5 parts, for example, it can be 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, etc.

[0155] Preferably, the green body comprises the following components by mass percentage: SiO2 63-67%, Al2O3 20.5-23.5%, CaO 1-1.6%, MgO 0.7-1.1%, K2O 1.5-2.1%, Na2O 3-3.6%, with the remainder being loss on ignition and impurities.

[0156] Based on the total mass of the chemical composition of the blank as 100%, the SiO2 content is 63-67%, for example, it can be 63%, 64%, 65%, 66%, 67%, etc.

[0157] Based on the total mass of the chemical composition of the blank as 100%, the content of Al2O3 is 20.5% to 23.5%, for example, it can be 20.5%, 21%, 21.5%, 22%, 22.5%, 23.5%, etc.

[0158] Based on the total mass of the chemical composition of the blank as 100%, the CaO content is 1 to 1.6%, for example, it can be 1%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, etc.

[0159] Based on the total mass of the chemical composition of the blank as 100%, the MgO content is 0.7% to 1.1%, for example, it can be 0.7%, 0.8%, 0.9%, 1%, 1.1%, etc.

[0160] Based on the total mass of the chemical composition of the blank as 100%, the K2O content is 1.5% to 2.1%, for example, it can be 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2%, 2.1%, etc.

[0161] Based on the total mass of the chemical composition of the blank as 100%, the Na2O content is 3-3.6%, for example, it can be 3%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, etc.

[0162] Preferably, the raw materials for preparing the blank include, by weight, 20-24 parts of ball clay, 8-12 parts of silica sand, 18-22 parts of potassium sodium sand, 8-12 parts of potassium sodium stone powder, 4-6 parts of polishing clay, 4-8 parts of medium-temperature sand, 4-6 parts of bauxite, 4-6 parts of pyrophyllite, 4-8 parts of bentonite, 4-8 parts of diopside, 4-6 parts of high-clay, 0.1-0.5 parts of optional degumming agent, 0.1-0.5 parts of optional water-reducing agent, and 0.1-0.8 parts of optional reinforcing agent.

[0163] In the raw materials for preparing the blank, the content of the ball clay is 20 to 24 parts, for example, it can be 20 parts, 20.5 parts, 21 parts, 21.5 parts, 22 parts, 22.5 parts, 23 parts, 23.5 parts, 24 parts, etc.

[0164] In the raw materials for preparing the blank, the content of silica sand is 8 to 12 parts, for example, it can be 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, etc.

[0165] In the raw materials for preparing the blank, the content of potassium sodium sand is 18 to 22 parts, for example, it can be 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, etc.

[0166] In the raw materials for preparing the blank, the content of potassium sodium stone powder is 8 to 12 parts, for example, it can be 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, etc.

[0167] In the raw materials for preparing the blank, the content of polishing clay is 4 to 6 parts, for example, 4 parts, 4.5 parts, 5 parts, 5.5 parts, 6 parts, etc.

[0168] In the raw materials for preparing the blank, the content of medium-temperature sand is 4 to 8 parts, for example, it can be 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, etc.

[0169] In the raw materials for preparing the blank, the content of bauxite is 4 to 6 parts, for example, 4 parts, 4.5 parts, 5 parts, 5.5 parts, 6 parts, etc.

[0170] In the raw materials for preparing the blank, the content of pyrophyllite is 4 to 6 parts, for example, 4 parts, 4.5 parts, 5 parts, 5.5 parts, 6 parts, etc.

[0171] In the raw materials for preparing the blank, the content of bentonite is 4 to 8 parts, for example, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, etc.

[0172] In the raw materials for preparing the blank, the content of diopside is 4 to 8 parts, for example, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, etc.

[0173] In the raw materials for preparing the blank, the content of high clay is 4 to 6 parts, for example, 4 parts, 4.5 parts, 5 parts, 5.5 parts, 6 parts, etc.

[0174] In the raw materials for preparing the preform, the content of the optional degumming agent is 0.1 to 0.5 parts, for example, 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, etc.

[0175] In the raw materials for preparing the green body, the content of the optional water-reducing agent is 0.1 to 0.5 parts, for example, 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, etc.

[0176] In the raw materials for preparing the green body, the content of the optional reinforcing agent is 0.1 to 0.8 parts, for example, it can be 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, etc.

[0177] In the above-described raw material formulation of the present invention, the suspending agent is preferably methylcellulose.

[0178] In the above-mentioned raw material formulation of the present invention, the degumming agent is preferably sodium tripolyphosphate and / or acrylic polymer.

[0179] In the above-mentioned raw material formulation of the present invention, the water-reducing agent is preferably sodium silicate.

[0180] In the above-described raw material formulation of the present invention, the reinforcing agent is preferably vinyl acetate.

[0181] In the above-described raw material formulation of the present invention, the organic solvent is preferably ethyl acetate.

[0182] In the above-described raw material formulation of the present invention, the dispersant is preferably polyacrylamide.

[0183] In the above-mentioned raw material formulation of the present invention, the defoamer is preferably a polyether-modified organosilicon.

[0184] In the above-described raw material formulation of the present invention, the anti-settling agent is preferably an aluminate ester.

[0185] Fourthly, the present invention provides a method for preparing a ceramic plate with a concave-convex micro-mold texture as described in the first aspect, the method comprising the following steps:

[0186] The surface of the blank is digitally printed to peel off the ink, apply a surface glaze, inkjet print a pattern, and apply a transparent glaze in sequence to obtain a blank with glaze.

[0187] The glazed body is fired to obtain a semi-finished product;

[0188] The semi-finished product is polished to obtain the ceramic slab with the concave-convex micro-mold texture.

[0189] Preferably, the polishing process includes the following steps:

[0190] Install 1000-mesh elastic abrasive blocks on 4 to 6 groups (e.g., 4, 5, 6 groups) of grinding heads respectively, install 400-mesh fiber abrasive blocks on 7 to 9 groups (e.g., 7, 8, 9 groups) of grinding heads respectively, and install 400-mesh brush abrasive blocks on 4 to 6 groups (e.g., 4, 5, 6 groups) of grinding heads respectively.

[0191] The grinding head rotates at a speed of 1400–1500 r / min, for example, 1400 r / min, 1420 r / min, 1440 r / min, 1460 r / min, 1480 r / min, 1500 r / min, etc., and the downward pressure is 2–4 kg / cm². 2 For example, it could be 2kg / cm 2 2.5kg / cm 2 3kg / cm 2 3.5kg / cm 2 4kg / cm 2The transmission speed of the polishing machine belt is 8 to 12 m / min, for example, it can be 8 m / min, 8.5 m / min, 9 m / min, 9.5 m / min, 10 m / min, 10.5 m / min, 11 m / min, 11.5 m / min, 12 m / min, etc.

[0192] In the preparation method of the ceramic slab with concave-convex micro-mold texture of the present invention, firstly, digital printing technology is used to generate a controllable texture, controllable positioning, and controllable depth of engraved concave-convex texture effect on the flat blank; secondly, the above-mentioned specific multi-dimensional soft polishing technology is adopted, through the combination of various types of polishing grinding blocks and precise grit control, elastic grinding blocks are used to grind the surface smooth and glossy, fiber grinding blocks are used to grind the flat surface to form a smooth feel, and brush-type grinding blocks are used to expand the contact area between the grinding blocks and the concave-convex surface, and three-dimensional multi-angle polishing treatment is performed. Under different polishing pressure conditions, the gloss gradually changes within the range of 5 to 25°, while forming a rich variation in the texture of the touch.

[0193] Preferably, the method for preparing the concave-convex micro-mold textured ceramic sheet includes the following steps:

[0194] (1) Digitally print peeling ink on the surface of the blank to form a peeling ink layer containing a predetermined pattern;

[0195] (2) Apply a top glaze to the peeled ink layer to form a top glaze layer;

[0196] (3) Print a colored pattern on the surface of the glaze layer to form an inkjet pattern layer;

[0197] (4) Apply a transparent glaze to the surface of the inkjet pattern layer to form a transparent glaze layer;

[0198] (5) The semi-finished product is obtained by firing, and then the ceramic plate is obtained by using a predetermined polishing mode.

[0199] Preferably, the green body is prepared by the following method: according to the element ratio of the green body, the raw materials of the corresponding elements and water are added to a ball mill and mixed, and then ball milled, spray-dried, sieved, pressed and dried to obtain the green body.

[0200] Preferably, during the preparation of the green body, the raw materials are ball-milled using a 60T ball mill.

[0201] Preferably, during the preparation of the green body, the raw material is ball-milled for 14 to 16 hours (e.g., 14 hours, 14.5 hours, 15 hours, 15.5 hours, 16 hours, etc.), and the ball milling speed is 11 to 13 r / min (e.g., 11 r / min, 11.5 r / min, 12 r / min, 12.5 r / min, 13 r / min, etc.).

[0202] Preferably, during the preparation of the blank, the mass ratio of the raw material to water is (2.7 to 3.3):1, for example, it can be 2.7:1, 2.8:1, 3:1, 3.2:1, 3.3:1, etc.

[0203] Preferably, during the preparation of the blank, the powder is sieved using a sieve with a mesh size of 100 or higher.

[0204] Preferably, the blank is prepared by the following method:

[0205] Mixing: Add the ball clay, silica sand, potassium sodium sand, potassium sodium stone powder, polishing clay, medium-temperature sand, bauxite, pyrophyllite, bentonite, diopside, high clay, degumming agent, water-reducing agent, reinforcing agent and water to the ball mill according to the proportion;

[0206] Preparation of green body material: The above mixture is ball-milled at a speed of 14-16 r / min for 11-13 h (using a 60T ball mill), and then the green body material is obtained by spray tower;

[0207] Post-processing: The above-mentioned green body material is sequentially sieved, pressed, and dried to obtain the green body.

[0208] Preferably, the surface glaze is prepared by the following method: according to the element ratio of the surface glaze, the raw materials of the corresponding elements are added to a ball mill with water, suspending agent and degumming agent, mixed, ball milled and aged to obtain the surface glaze.

[0209] Preferably, during the preparation of the surface glaze, the ball milling time is 8 to 10 hours (using a 10T ball mill), for example, 8 hours, 8.5 hours, 9 hours, 9.5 hours, 10 hours, etc., and the ball milling speed is 16 to 18 r / min.

[0210] Preferably, during the preparation of the surface glaze, after ball milling, a sieving step is required (i.e., the ball-milled slurry is passed through a 325-mesh sieve).

[0211] Preferably, the aging time of the glaze during preparation is 30-35 hours, for example, 30 hours, 31 hours, 32 hours, 33 hours, 34 hours, or 35 hours, and the aging temperature is room temperature.

[0212] Preferably, the surface glaze is prepared by the following method:

[0213] Mixing: According to the element ratio of the glaze, weigh potassium feldspar, sodium feldspar, wollastonite, calcite, kaolin, calcined talc, barium carbonate, zirconium silicate, water, suspending agent and desiccant and add them to the ball mill for mixing.

[0214] Ball milling: The above mixture is ball milled at a speed of 16-18 r / min for 8-10 hours (using a 10T ball mill);

[0215] Sieving: Pass the ball-milled slurry through a 325-mesh sieve;

[0216] Aging: The sieved slurry is aged at room temperature for 30-35 hours to obtain the surface glaze.

[0217] Compared with the prior art, the present invention has the following beneficial effects:

[0218] (1) The transparent glaze formula of the present invention uses a specific ratio of transparent dry granules and glaze slurry, mainly composed of chemical materials, which can better maintain the stability of the production process. The strontium oxide contained in the transparent dry granules has a low melting temperature that triggers the various components in the glaze slurry to form eutectic substances more quickly and generate a liquid phase, effectively reducing the firing temperature.

[0219] (2) The strontium carbonate and barium carbonate in the transparent glaze formula of the present invention have low decomposition temperature during firing, which can promote the degassing in the glaze layer at the fastest speed. Therefore, the glaze layer has fewer pores and higher density, resulting in better anti-fouling effect. Furthermore, the transparent glaze formula of the present invention forms more crystalline phase substances (about 90%) after firing. Since the amount of crystalline phase substances determines the quality of the wear resistance of the product surface, its wear resistance is better.

[0220] (3) The presence of more alkaline earth metals such as calcium, barium, and magnesium in the transparent glaze formula of this invention effectively increases the high-temperature viscosity of the glaze during the melting process, reduces its fluidity, prevents the melting and leveling of uneven areas, and maintains a better three-dimensional uneven effect.

[0221] (4) The present invention also provides a ceramic slab with a textured surface, wherein the textured surface is formed by peeling off the ink and the surface glaze layer together on the surface of the ceramic slab, and the vertical distance between the depressions and protrusions of the texture is specifically limited to within 0.35mm, thereby solving the problem that the textured surface is easy to get dirty and difficult to clean during use.

[0222] (5) This invention also provides a method for preparing the aforementioned textured ceramic slab with concave and convex micro-molds. Digital engraving technology is used to create controllable textures, controllable positioning, and controllable depth of engraving on a planar blank. Simultaneously, multi-dimensional soft polishing technology is employed, using a combination of various types of polishing blocks and precise grit control, and performing three-dimensional multi-angle polishing under different polishing pressures to create rich variations in gloss and tactile texture. Furthermore, through innovative improvements to the glaze formula, the glaze layer becomes denser and has fewer pores after firing. After multi-dimensional soft polishing, it does not require waxing and still possesses good anti-fouling properties. Attached Figure Description

[0223] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0224] Figure 1 This is a partial view of the surface of the ceramic plate with concave-convex micro-mold texture prepared in Example 1.

[0225] Figure 2 This is a phase diagram of the transparent glaze layer of the ceramic slab with concave-convex micro-mold texture prepared in Example 1.

[0226] Figure 3 The image shows the phase composition of the transparent glaze layer of the ceramic slab with the uneven micro-mold texture prepared in Comparative Example 1.

[0227] Figure 4 This is a partial view of the surface of the ceramic plate with concave-convex micro-mold texture prepared in Comparative Example 1.

[0228] Figure 5 This is a partial view of the surface of the ceramic plate with concave-convex micro-mold texture prepared in Comparative Example 3.

[0229] Figure 6 This is a partial view of the surface of the ceramic plate with concave-convex micro-mold texture prepared in Comparative Example 10. Detailed Implementation

[0230] Unless otherwise defined herein, the scientific and technical terms used in conjunction with this invention shall have the meanings commonly understood by one of ordinary skill in the art. The meaning and scope of terms shall be clear; however, in any case of potential ambiguity, the definitions provided herein shall prevail over any dictionary or foreign definitions. In this application, unless otherwise stated, the use of "or" means "and / or". Furthermore, the use of the term "comprising" and other forms is non-limiting.

[0231] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0232] The present invention will be further illustrated by the following examples. Unless otherwise specified, the materials in the examples are prepared according to existing methods or purchased directly from the market.

[0233] Example 1

[0234] This embodiment provides a ceramic sheet with a textured surface using a micro-mold pattern, which is prepared by the following method:

[0235] (1) Preparation of the blank:

[0236] Weigh the following raw materials according to their composition: 22 parts ball clay, 10 parts silica sand, 20 parts potassium sodium sand, 10 parts potassium sodium stone powder, 5 parts polishing clay, 6 parts medium-temperature sand, 5 parts bauxite, 5 parts pyrophyllite, 6 parts bentonite, 6 parts diopside, 5 parts high clay, 0.3 parts degumming agent (Duramax D-3019), 0.3 parts water-reducing agent (sodium silicate), and 0.4 parts reinforcing agent (vinyl acetate). Add the above raw materials to a ball mill (60T), then add water (the mass ratio of raw materials to water is 3:1) and mix. Ball mill at 15 r / min for 12 h. After ball milling, the green body material is obtained through a spray tower. The moisture content of the green body material is 6.5% by mass, and the particle size of the green body material is such that more than 95% of the residue passes through a 100-mesh sieve. Then, the green body material is pressed and dried under a ceramic press to obtain the green body.

[0237] The chemical composition of the above-mentioned blank, by mass percentage, includes: SiO2 65%, Al2O3 22%, CaO 1.3%, MgO 0.9%, K2O 1.8%, Na2O 3.3%, with the remainder being loss on ignition and impurities.

[0238] (2) Preparation of the surface glaze: Weigh the following components according to the composition of the surface glaze raw materials: 34 parts potassium feldspar, 17 parts sodium feldspar, 7 parts wollastonite, 8 parts calcite, 14 parts kaolin, 6 parts calcined talc, 4 parts barium carbonate, and 10 parts zirconium silicate. Add 100 parts of the above raw materials, 28 parts of water, 0.15 parts of methylcellulose, and 0.35 parts of sodium tripolyphosphate to a ball mill (10T) and mix. Ball mill at 17 r / min for 9 hours. Pass through a 325-mesh sieve; the residue is measured to be 0.3%. Then, pass through another 325-mesh sieve and age for 32 hours to obtain the surface glaze with a specific gravity of 1.4 g / cm³. 3 ;

[0239] The chemical composition of the above-mentioned glaze, by mass percentage, includes: SiO2 50.2%, Al2O3 20%, K2O 3.8%, Na2O 5.2%, CaO 2.5%, MgO 0.7%, BaO 4%, ZnO 1.1%, ZrO 5.5%, with the remainder being loss on ignition and impurities.

[0240] (3) Preparation of transparent glaze:

[0241] ① Preparation of transparent dry granules: Weigh the following raw materials by weight: 15 parts quartz, 36 parts potassium feldspar, 7 parts kaolin, 5 parts calcined talc, 10 parts limestone, 5.5 parts calcite, 7 parts alumina, 8 parts zinc oxide, and 6.5 parts strontium carbonate; mix the above raw materials, put them into a furnace and calcine and melt them at a high temperature of about 1450℃, clarify them, and then rapidly cool the glass melt by water bath or water-cooled metal rollers to make glass-like flakes or granules, and then crush them into 150-mesh powder to obtain the transparent dry granules;

[0242] The chemical composition of the above-mentioned translucent dry granules, by mass percentage, includes: SiO2 52.66%, Al2O3 18.35%, CaO 5.49%, MgO 1.29%, K2O 3.31%, Na2O 3.66%, ZnO 7.96%, SrO 6.32%, with the remainder being loss on ignition and impurities.

[0243] ② Preparation of protective glaze: Weigh the following raw materials by weight: 28 parts potassium feldspar, 20 parts sodium feldspar, 8 parts dolomite, 7 parts calcite, 9 parts kaolin, 6.5 parts calcined kaolin, 5 parts calcined talc, 10 parts barium carbonate, and 6.5 parts zinc oxide. Add 100 parts of the above raw materials, 27 parts of water, 0.15 parts of methylcellulose, and 0.35 parts of sodium tripolyphosphate to a ball mill (10T) and mix. Ball mill at 17 r / min for 9 hours, then pass through a 325-mesh sieve. The residue on the sieve is measured to be 0.3%. After passing through another 325-mesh sieve, age for 32 hours to obtain the protective glaze with a specific gravity of 1.2 g / cm³. 3 ;

[0244] The chemical composition of the aforementioned protective glaze, by mass percentage, includes: SiO2 47.05%, Al2O3 16.92%, CaO 4.89%, MgO 3.63%, K2O 3.73%, Na2O 2.63%, BaO 10.1%, ZnO 6.24%, with the remainder being loss on ignition and impurities;

[0245] ③ Preparation of barium slurry: 100 parts barium carbonate, 0.6 parts methylcellulose, and 42 parts water were placed in a ball mill (0.5T) and milled for 1 hour. The mixture was then passed through a 325-mesh sieve, and the residue was measured to be 0.4%, yielding a barium slurry with a specific gravity of 1.88 g / cm³. 3 The main component of the barium slurry is BaCO3;

[0246] ④ Preparation of glaze slurry: Mix 37.5% of the protective glaze, 3% of the barium paste and 59.5% of the F310 suspending agent obtained above evenly to obtain the glaze slurry (Note: F310 suspending agent is a conventional material purchased, and its composition is methylcellulose).

[0247] ⑤ Preparation of transparent glaze: 18% transparent dry particles and 82% glaze slurry are uniformly mixed to obtain transparent glaze, wherein the mass ratio of transparent dry particles to glaze slurry is 1:4.56;

[0248] The chemical composition of the aforementioned transparent glaze, by mass percentage, includes: SiO2 46.61%, Al2O3 16.82%, CaO 4.87%, MgO 2.43%, K2O 3.27%, Na2O 2.9%, BaO 9.57%, ZnO 6.55%, SrO 2.94%, with the remainder being loss on ignition and impurities.

[0249] (4) Dissecting the preparation of ink and digital printing

[0250] ① Preparation of peeling ink: Weigh the raw materials by weight: 53 parts quartz, 20 parts calcined kaolin, 8 parts corundum, 10 parts kaolin, and 9 parts sodium carbonate. Mix the above raw materials evenly and calcine them at 1100℃ until they melt. Then quickly pour them into cold water to cool them into flocs. Grind them into powder particles with a particle size of 300nm to obtain peeling glaze.

[0251] The chemical composition of the peeling glaze, by mass percentage, includes: 73% SiO2, 19% Al2O3, 5% Na2O, with the remainder being loss on ignition and impurities. Then, 22 parts of the above peeling glaze, 70 parts of organic solvent (name: ethyl acetate), 5 parts of dispersant (name: polyacrylamide), 1.5 parts of defoamer (name: polyether-modified silicone), and 1.5 parts of anti-settling agent (name: aluminate) are uniformly mixed to obtain the peeling ink.

[0252] ② Digital printing: Digital printing peel-off functional ink is used on the surface of the blank to form a peel-off functional ink layer containing a predetermined pattern.

[0253] (5) Apply the above-mentioned surface glaze to the peeled functional ink layer to form a surface glaze layer; wherein the amount of surface glaze applied is 420g / m 2 ;

[0254] (6) Print a colored pattern on the surface of the glaze layer to form an inkjet pattern layer;

[0255] (7) Apply the above-mentioned transparent glaze to the surface of the inkjet pattern layer to form a transparent glaze layer; wherein the amount of transparent glaze applied is 280g / m 2 ;

[0256] (8) The glazed body is fired in a kiln at a maximum temperature of 1180℃ for 50 minutes to produce a semi-finished product. Then, the semi-finished product is polished using a predetermined polishing mode: 1000-grit elastic abrasive blocks are installed on the five sets of grinding heads at the front of the polishing machine, and the downward pressure of the grinding heads is set to 3 kg / cm. 2The middle section has 8 sets of grinding heads equipped with 400-mesh fiber grinding blocks, and the grinding head downward pressure is set to 3 kg / cm. 2 The rear five grinding heads are equipped with 400-grit brush grinding blocks, and the grinding head downward pressure is set to 3 kg / cm. 2 The rotation speed of all grinding heads was set to 1450 r / min, and the transmission speed of the polishing machine belt was set to 10 m / min. After polishing, the ceramic slab (such as...) was obtained. Figure 1 As shown, the maximum vertical distance between the convex and concave surfaces of the texture is 0.3 mm.

[0257] Example 2

[0258] This embodiment provides a ceramic slab with a textured surface and a concave-convex micro-mold. The only difference from Embodiment 1 is the proportion of transparent glaze. ⑤ Preparation of transparent glaze: The mass fraction ratio of the transparent dry particles to the glaze slurry is 1:5.25, that is, 16% of the transparent dry particles and 84% of the glaze slurry are uniformly mixed to obtain a transparent glaze; wherein, the glaze slurry contains 36% protective glaze, 3.5% barium slurry and 60.5% F310 suspending agent;

[0259] The chemical composition of the aforementioned transparent glaze, by mass percentage, includes: SiO2 45.23%, Al2O3 16.11%, CaO 4.44%, MgO 2.13%, K2O 3%, Na2O 2.63%, BaO 10%, ZnO 6.04%, SrO 2.72%, with the remainder being loss on ignition and impurities.

[0260] Example 3

[0261] This embodiment provides a ceramic slab with a textured surface and a concave-convex micro-mold. The only difference from Embodiment 1 is the proportion of transparent glaze. ⑤ Preparation of transparent glaze: The mass fraction ratio of the transparent dry particles to the glaze slurry is 1:4, that is, 20% of the transparent dry particles and 80% of the glaze slurry are uniformly mixed to obtain a transparent glaze; wherein, the glaze slurry contains 39% protective glaze, 2.5% barium slurry and 58.5% F310 suspending agent;

[0262] The chemical composition of the aforementioned transparent glaze, by mass percentage, includes: SiO2 48%, Al2O3 17.5%, CaO 5.23%, MgO 2.78%, K2O 3.57%, Na2O 3.16%, BaO 9.15%, ZnO 6.95%, SrO 3.14%, with the remainder being loss on ignition and impurities.

[0263] Example 4

[0264] This embodiment provides a ceramic slab with a textured surface and a concave-convex pattern. The only difference from Embodiment 1 is the polishing mode in step (8): 1000-grit elastic abrasive blocks are installed on the four sets of grinding heads at the front of the polishing machine, and the downward pressure of the grinding heads is set to 4 kg / cm.2 The middle section has 9 sets of grinding heads equipped with 400-mesh fiber grinding blocks, and the grinding head downward pressure is set to 2 kg / cm. 2 The rear four sets of grinding heads are equipped with 400-grit brush grinding blocks, and the grinding head downward pressure is set to 4 kg / cm. 2 The rotation speed of all grinding heads was set to 1400 r / min, and the transmission speed of the polishing machine belt was set to 12 m / min. After polishing, the ceramic plate was obtained.

[0265] Example 5

[0266] This embodiment provides a ceramic slab with a textured surface and a concave-convex pattern. The only difference from Embodiment 1 is the polishing mode in step (8): 1000-grit elastic abrasive blocks are installed on the six grinding heads at the front of the polishing machine, and the downward pressure of the grinding heads is set to 2 kg / cm. 2 The middle section has 7 sets of grinding heads equipped with 400-mesh fiber grinding blocks, and the grinding head downward pressure is set to 4 kg / cm. 2 The rear six grinding heads are equipped with 400-grit brush grinding blocks, and the grinding head downward pressure is set to 2 kg / cm. 2 The rotation speed of all grinding heads was set to 1500 r / min, and the transmission speed of the polishing machine belt was set to 8 m / min. After polishing, the ceramic plate was obtained.

[0267] Comparative Example 1

[0268] This comparative example provides a ceramic slab with a textured surface and a concave-convex micro-mold. The only difference from Example 1 is the proportion of transparent glaze. ⑤ Preparation of transparent glaze: The mass fraction ratio of the transparent dry particles to the glaze slurry is 1:9, that is, 10% of the transparent dry particles and 90% of the glaze slurry are uniformly mixed to obtain transparent glaze.

[0269] As can be seen from Example 1 and this comparative example, the proportion of translucent dry particles in this comparative example is relatively small. Since the dry particles are amorphous, the insufficient content means that the crystalline substances in the glaze layer need more reaction time to transform from crystalline to amorphous during the firing process, which will increase the firing temperature, make the glaze surface dull, and cause the melting to increase, resulting in poor three-dimensional effect.

[0270] Comparative Example 2

[0271] This comparative example provides a ceramic slab with a textured surface and a concave-convex micro-mold. The only difference from Example 1 is the proportion of transparent glaze. ⑤ Preparation of transparent glaze: The mass fraction ratio of the transparent dry particles to the glaze slurry is 1:2.33, that is, 30% of the transparent dry particles and 70% of the glaze slurry are uniformly mixed to obtain a transparent glaze.

[0272] As can be seen from Example 1 and this comparative example, the proportion of translucent dry particles in this comparative example is too large, which causes the glaze melting time to be too early and mismatched with the firing curve of the base, making it easy to overfire, resulting in large deformation of the body and many surface quality defects such as prickly heat and pores.

[0273] Comparative Example 3

[0274] This comparative example provides a ceramic slab with a concave-convex micro-mold texture. The only difference between this comparative example and Example 1 is that the polishing mode is different: all the grinding heads of the polishing machine are equipped with 1000-grit elastic grinding blocks.

[0275] As can be seen from Example 1 and this comparative example, the polishing abrasive blocks in this comparative example are of a single type. Because the elastic abrasive blocks are relatively hard, the surface gloss is high after polishing, the depth of the uneven texture becomes shallower, and it is easy to be polished flat. There is no smooth touch. In addition, the surface of the elastic abrasive blocks cannot be bent and deformed, so the edge at the intersection of the plane and the texture depression is relatively sharp. Furthermore, the depression cannot be polished, which makes it easy for dirt to be trapped in the rough gaps such as burrs in the depression and difficult to clean.

[0276] Comparative Example 4

[0277] This comparative example provides a ceramic slab with a concave-convex micro-mold texture. The only difference between this comparative example and Example 1 is that the polishing mode is different: all the grinding heads of the polishing machine are equipped with 400-mesh fiber grinding blocks.

[0278] As can be seen from Example 1 and this comparative example, the polishing abrasive blocks in this comparative example are of a single type. Although the abrasive surface of the fiber abrasive block has a certain degree of elasticity and the surface has a certain smooth feel after polishing, the gloss is low and the deep recesses of the texture cannot be polished, which makes it easy for dirt to be trapped in the rough gaps such as burrs in the recesses and difficult to clean.

[0279] Comparative Example 5

[0280] This comparative example provides a ceramic slab with a textured surface and a concave-convex pattern. The only difference between this comparative example and Example 1 is the polishing mode: all the grinding heads of the polishing machine are equipped with 400-grit brush blocks.

[0281] As can be seen from Example 1 and this comparative example, the polishing abrasive blocks in this comparative example are of a single type. Although the bristles of the brush-type abrasive blocks can be bent and can perform three-dimensional multi-dimensional polishing on the surface and depressions of the board, the surface after polishing has a smooth touch, but the gloss is very low, and the overall effect is only one kind of gloss and touch, without a variety of gloss and touch textures.

[0282] Comparative Example 6

[0283] This comparative example provides a ceramic slab with a concave-convex micro-mold texture. The only difference from Example 1 is that the vertical distance between the concave and convex textures is controlled to be 0.5 mm.

[0284] Comparative Example 7

[0285] This comparative example provides a ceramic slab with a textured surface and a concave-convex pattern. The only difference from Example 1 is that the translucent dry particles, by mass percentage, include the following components: SiO2 56.0%, Al2O3 14.0%, CaO 7.0%, MgO 6.0%, K2O 5.5%, Na2O 4.5%, ZnO 6.5%, with the remainder being loss on ignition and impurities.

[0286] Comparative Example 8

[0287] This comparative example provides a ceramic slab with a textured surface and a concave-convex pattern. The only difference from Example 1 is that the chemical composition of the protective glaze, by mass percentage, includes: SiO2 42.0%, Al2O3 15.0%, CaO 9%, MgO 8.0%, K2O 7.0%, Na2O 7.5%, ZnO 8.5%, with the remainder being loss on ignition and impurities.

[0288] Comparative Example 9

[0289] This comparative example provides a ceramic slab with a textured surface and a concave-convex pattern. The only difference from Example 1 is that the glaze does not contain barium paste, and the content of the protective glaze is increased to 40.5%.

[0290] Comparative Example 10

[0291] This comparative example provides a ceramic slab with a textured surface and a concave-convex pattern. The only difference between this comparative example and Example 1 is the polishing mode: the front 6 sets of grinding heads of the polishing machine are equipped with 800-mesh elastic grinding blocks, the middle 6 sets of grinding heads are equipped with 320-mesh fiber grinding blocks, and the rear 6 sets of grinding heads are equipped with 320-mesh brush grinding blocks.

[0292] Comparative Example 11

[0293] This comparative example provides a ceramic slab with a textured surface and a concave-convex pattern. The only difference between this comparative example and Example 1 is the polishing mode: the grinding head pressure is set to 4 kg / cm. 2 The belt speed of the polishing machine is 6m / min, and the rotation speed of the grinding head is 1600r / min.

[0294] Test Example 1

[0295] Semi-quantitative analysis of phases in transparent glaze layer

[0296] Test samples: ceramic slabs with concave-convex micro-mold texture provided in Examples 1-3, and ceramic slabs with concave-convex micro-mold texture provided in Comparative Examples 1-2 and 7-9;

[0297] Testing standard: Semi-quantitative phase analysis using X-ray diffraction (XRD);

[0298] The test results are shown in Table 1 below:

[0299] Table 1

[0300]

[0301] As shown in the test data in Table 1, the transparent glaze prepared by this invention has a low melting temperature that triggers the formation of eutectic substances in the glaze slurry more quickly, resulting in the formation of a liquid phase, which effectively reduces the firing temperature. In addition, the strontium carbonate and barium carbonate in the transparent glaze formula have low decomposition temperatures during firing, and more crystalline substances (about 90%) are formed after firing. Since the amount of crystalline substances determines the quality of the wear resistance of the product surface, its wear resistance is better.

[0302] Test Example 2

[0303] Gloss, stain resistance and surface quality testing

[0304] Test samples: ceramic plates with concave-convex micro-mold texture provided in Examples 1-5 and ceramic plates with concave-convex micro-mold texture provided in Comparative Examples 1-11;

[0305] Testing standards: Gloss is tested using a gloss meter; surface stain resistance and surface quality are tested using the methods in GB / T3810.14.

[0306] The test results are shown in Table 2 below:

[0307] Table 2

[0308]

[0309]

[0310] As shown in Table 2, the ceramic slabs prepared using the technical solution of this invention have a gloss level between 5 and 25°, good stain resistance (level 5), strong transparency, good color development, and rich variations in gloss and tactile texture, resulting in excellent surface quality.

[0311] Based on Example 1, Comparative Examples 1-2, and Table 1, it can be seen that when the proportion of translucent dry particles in the transparent glaze is small, since the dry particles are amorphous, insufficient content leads to the crystalline substances in the glaze layer requiring more reaction time to transform from crystalline to amorphous during firing. This increases the firing temperature, making the glaze surface dull and resulting in increased melting and poor three-dimensional effect. When the proportion of translucent dry particles is too large, the melting time of the glaze layer is too early and does not match the firing curve of the base, making it easy to overfire, resulting in large deformation of the body and many surface quality defects such as pores.

[0312] Combining Example 1, Comparative Examples 3-5, and Table 1, it can be seen that when a single type of 1000-grit elastic abrasive block is used for polishing, the surface gloss is high after polishing due to the hardness of the elastic abrasive block. The depth of the uneven texture becomes shallower, making it easier to flatten, and there is no smooth feel. Furthermore, the inability of the elastic abrasive block to bend or deform results in sharp edges at the intersection of the flat surface and the textured depressions, and the depressions are not polished effectively, leading to burrs and other rough crevices within the depressions easily trapping dirt and making them difficult to clean. When a single type of 400-grit fiber abrasive block is used for polishing, although... While fiber abrasive blocks have a certain degree of elasticity in their abrasive surface, resulting in a smooth feel after polishing, they have low gloss and cannot reach deep into the textured recesses, making it easy for dirt to accumulate in the rough gaps and burrs within these recesses, making them difficult to clean. When a single type of 400-grit brush abrasive block is used for polishing, although the bristles of the brush-type abrasive block can be bent and can perform three-dimensional multi-dimensional polishing on the surface and recesses of the board, resulting in a smooth feel after polishing, the gloss is very low, and the overall effect is only one type of gloss and feel, without any variation in gloss or texture.

[0313] This invention's ceramic slabs utilize digital engraving technology to create controllable textures, positioning, and depth of embossed relief on a flat ceramic body, solving the problem of dirt accumulation and difficulty in cleaning during use. Furthermore, it employs multi-dimensional soft polishing technology, combining various types of polishing blocks and precisely controlling the grit size, while applying different polishing pressures to perform three-dimensional, multi-angle polishing, resulting in rich variations in gloss and tactile texture. Simultaneously, through innovative improvements to the glaze formula, the glaze layer becomes denser and has fewer pores after firing. After multi-dimensional soft polishing, it exhibits excellent stain resistance without the need for waxing.

[0314] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A transparent glaze, characterized by, The transparent glaze comprises transparent dry particles and glaze slurry in a mass ratio of 1:(4-5.3); The transparent dry particles comprise the following components in percentage by mass: SiO2 51-54%, Al2O3 17.2-19.5%, CaO 5-6%, MgO 1-1.6%, K2O 3-3.6%, Na2O 3.1-4.2%, ZnO 7-9%, SrO 6-6.6%, and the rest is ignition loss and impurities; The particle size of the transparent dry particles is 100-200 mesh; The glaze slurry comprises the following components in percentage by mass: suspending agent 57.5-61.5%, protective glaze 36-39%, and barium slurry 2.5-3.5%; wherein the barium slurry is prepared from the following raw materials in parts by weight: barium carbonate 100 parts, water 40-44 parts, and suspending agent 0.1-1 part; and the suspending agent is methyl cellulose; The protective glaze comprises the following components in percentage by mass: SiO2 46-48%, Al2O3 16-18%, CaO 4.3-5.5%, MgO 3.2-4%, K2O 3.2-4.3%, Na2O 2.2-3%, BaO 8.5-10%, ZnO 5.8-6.6%, and SrO 0.7-1.1%, and the rest is ignition loss and impurities.

2. The clear glaze of claim 1, wherein, The transparent glaze comprises transparent dry particles 16-20% and glaze slurry 80-84% in percentage by mass.

3. The clear glaze according to claim 1, wherein The transparent glaze comprises the following components in percentage by mass: SiO2 45-48.2%, Al2O3 16-17.6%, CaO 4.4-5.3%, MgO 2.1-2.8%, K2O 2.9-3.6%, Na2O 2.6-3.2%, BaO 9-10.2%, ZnO 6-7%, and SrO 2.7-3.2%, and the rest is ignition loss and impurities.

4. The clear glaze of claim 1, wherein, The raw materials for preparing the transparent dry particles comprise the following in parts by weight: quartz 13-17 parts, potassium feldspar 34-38 parts, kaolin 6-8 parts, calcined talc 4-6 parts, limestone 9-11 parts, calcite 5-6 parts, alumina 6-8 parts, zinc oxide 7-9 parts, and strontium carbonate 6-7 parts.

5. The clear glaze of claim 1, wherein, The raw materials for preparing the protective glaze comprise the following in parts by weight: potassium feldspar 26-30 parts, sodium feldspar 18-22 parts, dolomite 7-9 parts, calcite 6-8 parts, kaolin 8-10 parts, calcined kaolin 6-7 parts, calcined talc 4-6 parts, barium carbonate 9-11 parts, and zinc oxide 6-7 parts.

6. A method of producing the transparent glaze according to any one of claims 1 to 5, characterized by, The preparation method comprises the following steps: Preparation of glaze slurry: mixing the protective glaze, barium slurry, and suspending agent to obtain the glaze slurry; Preparation of transparent glaze: mixing the transparent dry particles and the glaze slurry to obtain the transparent glaze.

7. The method of claim 6, wherein the transparent glaze is prepared by the steps of: The transparent dry particles are prepared by the following steps: mixing the raw materials of corresponding elements according to the element proportion of the transparent dry particles, and calcining to obtain the transparent dry particles.

8. The method of claim 6, wherein the transparent glaze is prepared by the steps of: The protective glaze is prepared by the following steps: adding the raw materials of corresponding elements, water, suspending agent, and deagglomerating agent into a ball mill, ball milling, and aging to obtain the protective glaze.

9. The method of claim 6, wherein the transparent glaze is prepared by the steps of: The barium slurry is prepared by mixing barium carbonate, suspending agent and water, and ball milling to obtain the barium slurry.

10. A concave-convex micro-molding ceramic plate material, characterized by, The concave-convex micro-molding texture ceramic plate comprises a body layer, a surface glaze layer, an inkjet pattern layer and a transparent glaze layer which are sequentially stacked; The transparent glaze layer comprises the transparent glaze according to any one of claims 1-5. The body layer and the surface glaze layer further comprise a stripping ink layer, the stripping ink layer comprises stripping ink, and the stripping ink and the surface glaze layer jointly form a concave-convex texture, the maximum vertical distance between the convex surface and the concave surface of the texture is less than or equal to 0.35 mm.

11. The concave-convex micro-molding textured ceramic slab according to claim 10, characterized in that, The stripping ink comprises, by weight fraction, 20-24 parts of stripping glaze and 68-72 parts of organic solvent.

12. The concave-convex micro-molding textured ceramic slab according to claim 11, characterized in that, The stripping glaze comprises, by mass percentage, 70-76% of SiO2, 16-22% of Al2O3, 4-6% of Na2O, and the balance of loss on ignition and impurities.

13. The concave-convex micro-molding textured ceramic slab according to claim 10, characterized in that, The surface glaze layer comprises surface glaze, and the surface glaze comprises, by mass percentage, 48-52% of SiO2, 19-21% of Al2O3, 3.3-4% of K2O, 4.8-5.5% of Na2O, 2.1-2.8% of CaO, 0.5-1% of MgO, 3.8-4.5% of BaO, 0.8-1.3% of ZnO, and 5-6% of ZrO2, and the balance of loss on ignition and impurities.

14. A method of manufacturing the concave-convex micro-molding ceramic plate according to any one of claims 10 to 13, characterized in that, The preparation method comprises the following steps: The surface of the body is sequentially subjected to digital printing of stripping ink, application of surface glaze, inkjet printing of pattern, and application of transparent glaze to obtain a glaze-applied body; The glaze-applied body is fired to obtain a semi-finished product; The semi-finished product is polished and ground to obtain the concave-convex micro-molding texture ceramic plate.

15. The method for preparing the concave-convex micro-mold textured ceramic sheet according to claim 14, characterized in that, The polishing and grinding comprise the following procedures: 4-6 groups of grinding heads are respectively installed with 1000-mesh elastic grinding blocks, 7-9 groups of grinding heads are installed with 400-mesh fiber grinding blocks, and 4-6 groups of grinding heads are installed with 400-mesh brush grinding blocks.

16. The method for preparing the concave-convex micro-mold textured ceramic sheet according to claim 15, characterized in that, The rotation speed of the grinding head is 1400-1500 r / min, the pressing force is 2-4 kg / cm 2 , and the transmission speed of the polishing machine belt is 8-12 m / min.

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