A ceramic tile with a simulated dry granule surface effect and its preparation method

Abstract

This invention belongs to the field of architectural ceramics, specifically disclosing a ceramic tile with a simulated dry granular surface effect and its preparation method. The ceramic tile comprises, from bottom to top, a body, a glaze layer, a colored ink layer, a matte micro-engraved ink layer, and a protective glaze layer. The raw materials for preparing the glaze layer, by weight, include: 10-15 parts potassium feldspar, 20-35 parts sodium feldspar, 10-20 parts nepheline, 5-10 parts washed clay, 3-10 parts calcined kaolin, 2-10 parts quartz, 3-10 parts alumina, 8-15 parts barium carbonate, 4-10 parts wollastonite, 0-5 parts calcined talc, 0-4 parts calcined zinc oxide, and 5-15 parts zirconium silicate. The raw materials for preparing the matte micro-engraved ink layer, by weight, include: 40-50 parts inorganic materials, 3-8 parts dispersant, and 40-60 parts ester solvent. The inorganic materials consist of bismuth vanadate and glass powder, with the initial melting temperature of the glass powder being 1130-1220℃.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of building ceramics, and particularly relates to a ceramic tile with a dry particle effect and a preparation method thereof. BACKGROUND

[0002] In recent years, texture tiles have been popular in the ceramic market, such as fine matte dry particle surface, coarse matte dry particle surface, and candy dry particle surface. At present, most of these products are formed by applying dry particles and suspending agents to the surface of ceramic tiles to form a granular concave-convex effect. However, this process is complicated, a large amount of test work is required before the products with different particle effects are put into production, and it is impossible to achieve digital glazing, the effects of different parts of the tile surface are not the same, and it is impossible to switch between different dry particle effect products. While simulating the dry particle effect, it is also impossible to retain other effects of the product surface, such as marble concave lines, embossing and flat jade body, and it is also impossible to achieve different sizes of granular effects in different parts of the same tile.

[0003] Therefore, it is urgent to develop a ceramic tile with a dry particle effect, which can make production more efficient and quick, achieve digital granular effect, save the complicated steps of adjusting dry particles, better retain the texture of dry particle, and retain the effects of concave lines, embossing lines and flat jade body in marble, achieve the rich texture effect of granular surface ceramic tile, and the granular concave-convex effect of different coarse and fine dry particles such as fine matte dry particle, coarse matte dry particle and candy dry particle. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a ceramic tile with a dry particle effect and a preparation method thereof, which is suitable for digital production, can retain the texture of dry particle, and can retain the effects of concave lines, embossing and flat jade body in marble, achieve the rich texture of granular surface ceramic tile and the granular concave-convex effect of different coarse and fine dry particles.

[0005] To solve the above technical problems, the first aspect of the present application provides a ceramic tile, which comprises, from bottom to top, a body, a surface glaze layer, a color ink layer, a matte micro-sculpture ink layer and a protective glaze layer.

[0006] The preparation raw materials of the surface glaze layer include, by weight: 10-15 parts of potassium feldspar, 20-35 parts of sodium feldspar, 10-20 parts of nepheline, 5-10 parts of washed soil, 3-10 parts of calcined kaolin, 2-10 parts of quartz, 3-10 parts of aluminum oxide, 8-15 parts of barium carbonate, 4-10 parts of wollastonite, 0-5 parts of burned talc, 0-4 parts of calcined zinc oxide, and 5-15 parts of zirconium silicate.

[0007] The preparation raw material of the matte micro-sculpture ink layer includes, by weight fraction: inorganic material 40-50 parts, dispersing agent 3-8 parts and ester solvent 40-60 parts; the inorganic material is composed of bismuth vanadate and glass powder, and the initial melting temperature of the glass powder is 1130-1220℃.

[0008] Specifically, the ceramic tile of the present application realizes the effect of imitating dry granular surface by setting the surface glaze layer, color ink layer, matte micro-sculpture ink layer and protective glaze layer, and the raw materials of each layer interact with each other. That is, the effect net corresponding to the channel is designed by Photoshop, the matte micro-sculpture ink is printed on the surface glaze layer in the pattern of the designed effect net by using the ceramic digital inkjet printing equipment, and the pixel size and shape are adjusted so that the matte micro-sculpture ink layer shows the required different dry granular effects (such as fine dry granule, coarse dry granule or candy dry granule, etc.).

[0009] In the present application, the surface glaze layer adopts high calcium, high barium and low silicon glaze material system, CaO and BaO are used as high temperature fluxing agent, and the content of SiO2 is reduced so as to reduce the gloss of the glaze material and achieve the matte effect. At the same time, the water contact angle of the ester solvent in the matte micro-sculpture ink is greater than 90°, showing hydrophobicity; the water contact angle of the protective glaze is less than 90°, showing hydrophilicity; when the matte micro-sculpture ink and the protective glaze contact, they repel each other and peel off to generate the three-dimensional concave-convex lines before firing. At the same time, the bismuth vanadate in the matte micro-sculpture ink reduces the viscosity and surface tension of the surface glaze layer during high temperature firing, causing the glaze surface to sink, and the three-dimensional concave-convex lines generated before firing will be strengthened during high temperature firing. Under the double effects of "peeling off" and "sinking", the final granular effect is formed, like the ceramic dry granule covering on the surface of the product.

[0010] In addition, the inorganic material in the matte micro-sculpture ink is composed of bismuth vanadate and high temperature glass powder, and the high calcium, high barium and low silicon surface glaze and the high temperature glass powder in the matte micro-sculpture ink jointly act on each other, and after high temperature firing, the concave seams in the three-dimensional concave-convex lines show the matte gloss.

[0011] Preferably, the chemical composition of the glass powder includes, by weight percentage: Al2O3 14-18%, SiO2 42-48%, Na2O 2-5%, K2O 1-3%, ZnO 5-9%, BaO 12-15%, CaO 3-6%, MgO 0-2%, SrO 3-7%. The glass powder is high temperature clinker powder, mainly used for controlling the firing temperature of the matte micro-sculpture ink, and cooperatively acting with the surface glaze to realize the matte gloss effect after high temperature firing.

[0012] Preferably, the weight ratio of the bismuth vanadate and the glass powder is (5-15):(85-95).

[0013] Preferably, the ester solvent is selected from isooctyl palmitate and / or isooctyl laurate.

[0014] Preferably, the dispersant is Nipod 17000.

[0015] Preferably, the preparation raw material of the matte micro-engraving ink layer further comprises 0.1-1 parts by weight of a leveling agent.

[0016] Preferably, the leveling agent is BYK-361N.

[0017] Preferably, the preparation raw material of the protective glaze layer comprises, by weight parts, 100 parts of a basic protective glaze and 5-20 parts of a first matte transparent dry particle.

[0018] Preferably, the first matte transparent dry particle comprises, by weight percentage, Al2O3 18-22%, SiO2 50-55%, CaO 3-5%, K2O 3-5%, Na2O 1-4%, BaO 5-7%, ZnO 2-5%, and SrO 2-5%.

[0019] Preferably, the particle size of the first matte transparent dry particle is 200-300 mesh.

[0020] Preferably, the components of the basic protective glaze comprise, by weight parts, 15-25 parts of albite, 15-25 parts of potassium feldspar, 5-15 parts of dolomite, 8-15 parts of washed soil, 8-20 parts of calcined kaolin, 2-8 parts of aluminum oxide, 10-15 parts of barium carbonate, 1-5 parts of calcined zinc oxide, and 10-20 parts of a second matte transparent dry particle; the chemical composition of the second matte transparent dry particle is the same as that of the first matte transparent dry particle.

[0021] Specifically, since the application amount of the protective glaze is large, in order to achieve the matte high-transparency feeling of the protective glaze layer and the low gloss (4-8°) after firing, the present application adds a certain amount of matte transparent dry particles (the second matte transparent dry particle) to the basic protective glaze to improve the transparency of the protective glaze layer, that is, a part of the matte transparent dry particles is added to the basic protective glaze for ball milling to form a basic protective glaze slurry; another part of the matte transparent dry particles (the first matte transparent dry particle) is directly mixed with the basic protective glaze slurry to form the protective glaze. The working principle is that: by adding a certain amount of matte transparent dry particles to the basic protective glaze, the granular matte transparent dry particles can quickly lock the protective glaze slurry after the protective glaze is stripped to form concave-convex textures, maintain the three-dimensional texture effect, and reduce the high-temperature fluidity of the basic protective glaze during high-temperature firing to maintain the shaping of the concave-convex textures during high-temperature firing; at the same time, the second matte transparent dry particle can cover a thin layer on the matte micro-engraving ink layer after the protective glaze is stripped, further reducing the gloss of the concave groove where the matte micro-engraving ink is located.

[0022] It should be noted that the present application does not have special requirements for the components of the body, and the body of ordinary glazed ceramic tiles can be used.

[0023] The second aspect of the present application provides a preparation method of the above-mentioned ceramic tile, comprising the following steps:

[0024] The face glaze, color ink and matte micro-sculpture ink are sequentially applied on the body, and the protective glaze is applied, so as to sequentially form the face glaze layer, the color ink layer, the matte micro-sculpture ink layer and the protective glaze layer; after drying, the body is fired in a kiln to obtain the ceramic tile.

[0025] Preferably, the preparation process of the protective glaze is as follows: first, the second matte transparent dry particles are mixed with other raw materials for preparing the base protective glaze material, and wet ball milling is performed to obtain a base protective glaze slurry; then, the first matte transparent dry particles are added to the base protective glaze slurry and mixed to obtain the protective glaze.

[0026] Preferably, the glazing method of the face glaze is glazing.

[0027] Preferably, the specific gravity of the face glaze is 1.85-1.94 g / cm 3 , and the glazing amount is 400-800 g / m 2 .

[0028] Preferably, the pattern of the color ink layer is a pattern of sandstone, marble or the like.

[0029] Preferably, the matte micro-sculpture ink layer needs to be designed on the Photoshop software to print out the corresponding channel effect net, and the pixel size is 2-30 px; the designed effect net pattern is printed on the face glaze layer by a ceramic digital inkjet printing device, the printing gray scale is 60-100%, and the printing amount is 30-75 g / m 2 .

[0030] Preferably, the glazing method of the protective glaze is spraying.

[0031] Preferably, the specific gravity of the protective glaze is 1.35-1.55 g / cm 3 , and the glazing amount is 300-500 g / m 2 .

[0032] Preferably, the firing temperature is 1160-1220℃, and the firing period is 40-80 min.

[0033] The above technical solutions of the present application have at least the following technical effects or advantages compared with the prior art:

[0034] (1) The present application realizes the imitation dry granular particle surface effect of the product by adjusting the raw material components of each component layer to make them synergize, and combining digital design and printing. Not only the texture of the dry granular particle can be reserved, but also the effects of the concave lines, embossing and plane jade body of the imitation marble can be reserved, greatly enriching the texture and dry granular particle concave effect of the granular surface ceramic tile.

[0035] (2) The surface glaze layer of the present application adopts a high calcium, high barium and low silicon glaze system, uses CaO and BaO as high temperature fluxing agents, and reduces the content of SiO2 to achieve the matte effect of the glaze. At the same time, by taking advantage of the difference in hydrophobicity between the ester solvent in the matte micro-sculpture ink and the protective glaze, when they come into contact, they repel each other and peel off to produce the three-dimensional concave-convex lines before firing. The bismuth vanadate in the matte micro-sculpture ink reduces the viscosity and surface tension of the surface glaze layer during high temperature firing, which strengthens the three-dimensional concave-convex lines produced before firing, and the double effects of "peeling off" and "sinking" form the granular effect of distinct granules, realizing the imitation dry granular particle surface effect. In addition, the high calcium, high barium and low silicon surface glaze and the high temperature glass powder in the matte micro-sculpture ink work together to show a matte luster in the concave seams of the three-dimensional concave-convex texture after high temperature firing.

[0036] (3) The protective glaze of the present application adopts a step-by-step preparation process, that is, a part of the matte transparent dry granules is added to the base protective glaze material for ball milling together to form a base protective glaze slurry; another part of the matte transparent dry granules is directly mixed with the base protective glaze slurry to form a protective glaze. While ensuring the matte high transparency of the protective glaze layer, the matte and concave-convex texture of the glaze surface are realized. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 Effect net for the granular point design of Example 1;

[0038] Figure 2 Actual effect diagram of the ceramic tile prepared in Example 1;

[0039] Figure 3 Actual effect diagram of the ceramic tile prepared in Example 2;

[0040] Figure 4 Actual effect diagram of the ceramic tile prepared in Example 3;

[0041] Figure 5 Actual effect diagram of the ceramic tile prepared in Comparative Example 3;

[0042] Figure 6 Actual effect diagram of the ceramic tile prepared in Comparative Example 4;

[0043] Figure 7 Actual effect diagram of the ceramic tile prepared in Comparative Example 5. DETAILED DESCRIPTION

[0044] The application will be described in detail below with reference to the embodiments, so as to facilitate the understanding of the application by the person skilled in the art. It is necessary to particularly point out here that the embodiments are only used for further illustrating the application and cannot be understood as the limitation of the protection scope of the application. The non-essential improvements and adjustments of the application made by the person skilled in the art according to the above description of the application shall still belong to the protection scope of the application. Meanwhile, the raw materials mentioned below which are not described in detail are all the commercially available products; the process steps or preparation methods which are not mentioned in detail are all the process steps or preparation methods known by the person skilled in the art.

[0045] Embodiment 1

[0046] A ceramic tile sequentially comprises a body, a surface glaze layer, a color ink layer, a matte micro-sculpture ink layer and a protective glaze layer from bottom to top. Wherein:

[0047] The preparation raw materials of the surface glaze layer comprise, by weight fraction: 12 parts of potassium feldspar, 32 parts of sodium feldspar, 15 parts of nepheline, 9 parts of washed soil, 3 parts of calcined kaolin, 8 parts of quartz, 3 parts of aluminum oxide, 10 parts of barium carbonate, 8 parts of wollastonite, 2 parts of calcined zinc oxide and 12 parts of zirconium silicate.

[0048] The preparation raw materials of the matte micro-sculpture ink layer comprise, by weight fraction: 40 parts of inorganic material, 5 parts of dispersant Ningbodi 17000 and 55 parts of isooctyl palmitate; wherein: the inorganic material comprises, by weight fraction: 5 parts of bismuth vanadate and 95 parts of glass powder.

[0049] The chemical composition of the glass powder comprises, by weight percentage: Al2O3 15.41%, SiO2 46.68%, Na2O 3.48%, K2O 2.92%, ZnO 7.28%, BaO 13.05%, CaO 5.35%, MgO 0.45% and SrO 5.05%.

[0050] The preparation raw materials of the protective glaze comprise, by weight fraction: 100 parts of base protective glaze and 8 parts of first matte transparent dry particles.

[0051] The chemical composition of the first matte transparent dry particles comprises, by weight percentage: Al2O3 20.83%, SiO2 52.47%, CaO 4.78%, K2O 4.07%, Na2O 2.03%, BaO 5.44%, ZnO 4.56% and SrO 4.58%; the particle size of the first matte transparent dry particles is 200-300 mesh.

[0052] The components of the base protective glaze include, by weight parts: 20 parts of sodium feldspar, 20 parts of potassium feldspar, 11 parts of dolomite, 9 parts of washed soil, 16 parts of calcined kaolin, 2 parts of aluminum oxide, 14 parts of barium carbonate, 5 parts of calcined zinc oxide, and 15 parts of second matte transparent dry particles; the chemical composition of the second matte transparent dry particles is the same as that of the first matte transparent dry particles.

[0053] A method for preparing a ceramic tile, comprising the following steps:

[0054] (1) The raw materials for preparing the surface glaze layer are weighed according to the mass ratio, and water is added for ball milling (the mass ratio of the material to water is 100:40), to obtain a surface glaze slurry (the specific gravity is 1.90 g / cm 3 ); the bottom glaze slurry is sprayed onto the upper surface of the body by a bell jar spraying device (the amount of application is 600 g / m 2 ), to form a surface glaze layer; then a digital inkjet machine is used to print ceramic color ink on the surface of the surface glaze layer, to form a sandstone pattern layer;

[0055] (2) The effect net is designed to be granular and point-shaped by Photoshop, as shown in Figure 1 ; the pixel size of the effect net point-shaped pattern is adjusted to be 3-5 px, and the interval is 0.20-0.35 mm, to form a granular sandstone texture, and the marble line part and the white plane jade part are superimposed, so as to obtain a marble concave line and a plane jade body; then the raw materials for preparing the matte micro-sculpture ink layer are weighed according to the mass ratio, and are uniformly dispersed, to obtain a matte micro-sculpture ink; the digital inkjet machine is used to print on the pattern layer prepared in step (1), and the amount of printing is 60 g / m 2 , to form a matte micro-sculpture ink layer with point-shaped texture;

[0056] (3) The raw materials for preparing the base protective glaze are weighed according to the mass ratio, and water is added for ball milling (the mass ratio of the material to water is 100:40), to obtain a base protective glaze slurry; then the first matte transparent dry particles are added according to the mass ratio, and are mixed uniformly, to form a protective glaze slurry (the specific gravity is 1.40 g / cm 3 ); the protective glaze slurry is sprayed onto the upper surface of the matte micro-sculpture ink layer prepared in step (2) by a spraying cabinet device (the amount of application is 400 g / m 2 ), to form a protective glaze layer; after drying, it is fired in a kiln at a maximum temperature of 1200℃ for 60 min, to obtain the ceramic tile with a fine matte dry particle granular surface of the embodiment, and the product physical effect diagram is shown in Figure 2 .

[0057] Example 2

[0058] A ceramic tile, which comprises, from bottom to top, a body, a surface glaze layer, a color ink layer, a matte micro-sculpture ink layer, and a protective glaze layer.

[0059] The preparation raw materials of the surface glaze layer include, in terms of weight parts, 12 parts of potassium feldspar, 25 parts of sodium feldspar, 18 parts of nepheline, 9 parts of washed soil, 5 parts of calcined kaolin, 5 parts of quartz, 4 parts of aluminum oxide, 12 parts of barium carbonate, 7 parts of wollastonite, 2 parts of calcined zinc oxide, and 12 parts of zirconium silicate.

[0060] The preparation raw materials of the matte micro-engraving ink layer include, in terms of weight parts, 45 parts of inorganic material, 5 parts of dispersant Ningbodi 17000, and 50 parts of isooctyl palmitate; wherein the inorganic material includes, in terms of weight parts, 10 parts of bismuth vanadate and 90 parts of glass powder.

[0061] The chemical composition of the glass powder includes, in terms of weight percentage, 15.37% of Al2O3, 46.40% of SiO2, 4.08% of Na2O, 2.66% of K2O, 6.86% of ZnO, 13.93% of BaO, 4.01% of CaO, 1.11% of MgO, and 5.02% of SrO.

[0062] The preparation raw materials of the protective glaze include, in terms of weight parts, 100 parts of base protective glaze paste and 12 parts of first matte transparent dry particles.

[0063] The chemical composition of the first matte transparent dry particles includes, in terms of weight percentage, 18.17% of Al2O3, 53.74% of SiO2, 4.59% of CaO, 4.83% of K2O, 1.89% of Na2O, 6.57% of BaO, 4.01% of ZnO, and 4.71% of SrO; the particle size of the first matte transparent dry particles is 200-300 mesh.

[0064] The raw material components of the base protective glaze include, in terms of weight parts, 18 parts of sodium feldspar, 18 parts of potassium feldspar, 10 parts of dolomite, 8 parts of washed soil, 15 parts of calcined kaolin, 2 parts of aluminum oxide, 12 parts of barium carbonate, 5 parts of calcined zinc oxide, and 20 parts of second matte transparent dry particles; the chemical composition of the second matte transparent dry particles is the same as that of the first matte transparent dry particles.

[0065] A preparation method of a ceramic tile, comprising the following steps:

[0066] (1) The raw materials for preparing the surface glaze layer are weighed according to the mass ratio, and water is added for ball milling (the mass ratio of the materials to water is 100:40), to obtain a surface glaze paste (the specific gravity is 1.85 g / cm 3 ); the bottom glaze paste is applied to the upper surface of the body by a bell jar spraying device (the amount of glaze applied is 650 g / m 2 ), to form a surface glaze layer; then a digital inkjet machine is used to print ceramic color ink on the surface of the surface glaze layer, to form a sandstone-like pattern layer;

[0067] (2) Design the effect net into granular point by Photoshop, and adjust the pixel size of the effect net point pattern to 5-10px and the interval to 0.35-0.70mm to form granular sandstone texture, and leave the white marble line part, so as to obtain the marble embossed line; then take the preparation raw materials of the matte micro-sculpture ink layer by mass ratio, disperse uniformly, and obtain the matte micro-sculpture ink; print on the pattern layer prepared in step (1) by using a digital inkjet machine, and the printing amount is 50g / m 2 , to form the matte micro-sculpture ink layer with point texture;

[0068] (3) Take the preparation raw materials of the base protective glaze by mass ratio, add water to perform ball milling (the mass ratio of the materials to water is 100:40), to obtain the base protective glaze slurry, then add the first matte transparent dry particles by mass ratio, mix uniformly, to form the protective glaze slurry (the specific gravity is 1.50g / cm 3 ); spray the protective glaze slurry on the upper surface of the matte micro-sculpture ink layer prepared in step (2) by using a spray glaze cabinet device (the application amount is 350g / m 2 ), to form the protective glaze layer; after drying, enter the kiln to perform firing at the maximum temperature of 1190℃, the firing period is 70min, to obtain the ceramic tile with the imitation coarse matte dry particle surface of the embodiment, and the product actual effect diagram is shown in Figure 3 .

[0069] Example 3

[0070] A ceramic tile sequentially comprises a body, a surface glaze layer, a color ink layer, a matte micro-sculpture ink layer and a protective glaze layer from bottom to top. Wherein:

[0071] The preparation raw materials of the surface glaze layer comprise, by weight fraction: potassium feldspar 12 parts, sodium feldspar 30 parts, nepheline 18 parts, water-washed soil 9 parts, calcined kaolin 6 parts, quartz 5 parts, aluminum oxide 6 parts, barium carbonate 8 parts, wollastonite 4 parts, burned talc 2 parts, calcined zinc oxide 2 parts, zirconium silicate 12 parts.

[0072] The preparation raw materials of the matte micro-sculpture ink layer comprise, by weight fraction: inorganic materials 50 parts, dispersant Ningbodi 17000 5 parts and isooctyl palmitate 45 parts; wherein: the inorganic materials comprise, by weight fraction: bismuth vanadate 15 parts, glass powder 85 parts.

[0073] The chemical composition of the glass powder comprises, by weight percentage: Al2O3 16.21%, SiO2 46.96%, Na2O 2.78%, K2O 1.48%, ZnO 8.16%, BaO 13.14%, CaO 4.73%, MgO 0.74%, SrO 4.90%.

[0074] The preparation raw materials of the protective glaze comprise, by weight fraction: base protective glaze slurry 100 parts and first matte transparent dry particles 18 parts.

[0075] The chemical composition of the first matte transparent dry particles includes, in percentage by weight: Al2O319.42%, SiO251.86%, CaO 4.21%, K2O 4.23%, Na2O 2.31%, BaO 6.92%, ZnO 4.43%, and SrO 4.80%; the particle size of the first matte transparent dry particles is 200-300 mesh.

[0076] The preparation raw materials of the base protective glaze slurry include, in parts by weight: sodium feldspar 20 parts, potassium feldspar 15 parts, dolomite 9 parts, washed soil 9 parts, calcined kaolin 9 parts, aluminum oxide 6 parts, barium carbonate 14 parts, calcined zinc oxide 5 parts, and second matte transparent dry particles 19 parts; the chemical composition of the second matte transparent dry particles is the same as that of the first matte transparent dry particles.

[0077] A preparation method of a ceramic tile, comprising the following steps:

[0078] (1) The raw materials for preparing the surface glaze layer are weighed according to the mass ratio, and water is added for ball milling (the mass ratio of the materials to water is 100:40), to obtain a surface glaze slurry (the specific gravity is 1.94 g / cm 3 ); the bottom glaze slurry is sprayed onto the upper surface of the body (the amount of glaze applied is 650 g / m 2 ) by a bell jar glazing device to form a surface glaze layer; then a digital inkjet machine is used to print ceramic color ink on the surface of the surface glaze layer to form a sandstone-like pattern layer;

[0079] (2) An effect net with granular points is designed by Photoshop, and the pixel size of the effect net point pattern is adjusted to 10-20 px and the interval is 0.70-1.40 mm to form a granular sandstone texture; then the preparation raw materials of the matte micro-sculpture ink layer are weighed according to the mass ratio, and are uniformly dispersed to obtain a matte micro-sculpture ink; a digital inkjet machine is used to print on the pattern layer prepared in step (1), and the amount of printing is 65 g / m 2 to form a matte micro-sculpture ink layer with point-like texture;

[0080] (3) The raw materials for preparing the base protective glaze are weighed according to the mass ratio, and water is added for ball milling (the mass ratio of the materials to water is 100:40) to obtain a base protective glaze slurry, and then the first matte transparent dry particles are added according to the mass ratio and mixed uniformly to form a protective glaze slurry (the specific gravity is 1.50 g / cm 3 ); the protective glaze slurry is sprayed onto the upper surface of the matte micro-sculpture ink layer prepared in step (2) by a glaze spraying cabinet device (the amount of application is 450 g / m 2 ) to form a protective glaze layer; after drying, it is fired in a kiln at a maximum temperature of 1220℃ for a firing period of 50 min to obtain the ceramic tile with a candy-like dry particle surface of the embodiment, and the product physical effect diagram is shown in Figure 4 .

[0081] Comparative Example 1

[0082] Comparative Example 1 differs from Example 1 only in the preparation raw materials of the surface glaze layer, the preparation raw materials of the surface glaze layer of Comparative Example 1 include, by weight: potassium feldspar 12 parts, sodium feldspar 30 parts, nepheline 18 parts, washed soil 9 parts, quartz 15 parts, alumina 4 parts, barium carbonate 8 parts, wollastonite 2 parts, calcined talc 5 parts, calcined zinc oxide 2 parts, zirconium silicate 12 parts.

[0083] Comparative Example 2

[0084] Comparative Example 2 differs from Example 1 only in the preparation raw materials of the surface glaze layer, the preparation raw materials of the surface glaze layer of Comparative Example 2 include, by weight: potassium feldspar 12 parts, sodium feldspar 30 parts, nepheline 18 parts, washed soil 9 parts, quartz 12 parts, alumina 3 parts, barium carbonate 6 parts, wollastonite 3 parts, calcined talc 6 parts, calcined zinc oxide 2 parts, zirconium silicate 12 parts.

[0085] Comparative Example 3

[0086] Comparative Example 3 differs from Example 1 only in the preparation raw materials of the matte micro-sculpture ink layer, Comparative Example 3 uses the bright fine carving ink K3016 produced by Shandong Guocai Kanglai New Material Technology Co., Ltd.

[0087] The product physical effect diagram of the ceramic tile prepared in this comparative example is shown in Figure 5 , and Figure 5 It can be seen that the bright fine carving ink has a too high overall texture gloss when used to make a dot-like effect in a large area, and the color tone is biased red, which is quite different from the natural low gloss effect of natural sandstone.

[0088] Comparative Example 4

[0089] Comparative Example 4 differs from Example 1 only in the preparation raw materials of the matte micro-sculpture ink layer, Comparative Example 4 uses the matte fine carving ink K3028 produced by Shandong Guocai Kanglai New Material Technology Co., Ltd.

[0090] The product physical effect diagram of the ceramic tile prepared in this comparative example is shown in Figure 6 , and Figure 6 It can be seen that the matte fine carving ink has a very shallow concave-convex mold effect when used to make a dot-like effect in a large area, and the color tone is biased blue, which cannot achieve the particle effect of imitated dry particles.

[0091] Comparative Example 5

[0092] Comparative Example 5 differs from Example 1 only in the preparation raw materials of the matte micro-sculpture ink layer, Comparative Example 5 uses the sunken ink K3012 produced by Shandong Guocai Kanglai New Material Technology Co., Ltd.

[0093] The product effect diagram of the ceramic tile prepared in the present comparative example is shown in Figure 7 , the Figure 7 It can be seen that the concave-convex effect of the sunken ink is the best, but the content of bismuth vanadate is too high, and the vanadate is easy to form new vanadium salt with other oxides during high temperature sintering, resulting in yellowing at the concave-convex part of the sunken ink and too high gloss.

[0094] Comparative example 6

[0095] The difference between comparative example 6 and example 1 is only that the components of the base protective glaze in the protective glaze layer are different. The components of the base protective glaze in comparative example 6 include, by weight parts: 20 parts of sodium feldspar, 25 parts of potassium feldspar, 11 parts of dolomite, 9 parts of washed soil, 9 parts of calcined kaolin, 6 parts of aluminum oxide, 14 parts of barium carbonate, 5 parts of calcined zinc oxide, and 5 parts of second matte transparent dry particles.

[0096] Comparative example 7

[0097] The difference between comparative example 7 and example 1 is only that the components of the base protective glaze in the protective glaze layer are different. The components of the base protective glaze in comparative example 7 include, by weight parts: 20 parts of sodium feldspar, 25 parts of potassium feldspar, 11 parts of dolomite, 9 parts of washed soil, 9 parts of calcined kaolin, 6 parts of aluminum oxide, 14 parts of barium carbonate, 5 parts of calcined zinc oxide, and 5 parts of second matte transparent dry particles.

[0098] Comparative example 8

[0099] The difference between comparative example 8 and example 1 is only that the chemical composition of the matte transparent dry particles in the protective glaze layer is different. The chemical composition of the matte transparent dry particles in comparative example 8 includes, by weight percentage: Al2O3 20.13%, SiO2 51.84%, CaO 8.70%, K2O 1.73%, Na2O 1.52%, BaO 10.06%, ZnO 3.58%, and MgO 2.35%.

[0100] Comparative example 9

[0101] The difference between comparative example 9 and example 1 is only that the preparation process of the protective glaze slurry is different. The base protective glaze in comparative example 9 does not contain second matte transparent dry particles. When preparing, the base protective glaze slurry without matte transparent dry particles is directly mixed with the first matte transparent dry particles to form the protective glaze slurry.

[0102] Performance test

[0103] The gloss of the concave-convex part of the ceramic tile samples prepared in examples 1-3 and comparative examples 1-9 was tested respectively, and the visual effect and three-dimensional touch of the glaze surface were recorded. The results are shown in Table 1. The gloss was tested by a gloss meter.

[0104] Table 1: Performance comparison table of samples prepared in Examples 1-3 and Comparative Examples 1-9

[0105]

[0106] As can be seen from Table 1, the ceramic tile samples prepared in Examples 1-3 have a surface glossiness of 4-6°, a matte texture, and similar glossiness at the concave and convex parts of the glaze surface, strong three-dimensionality of the concave-convex particles, and no obvious glaze defects. By designing the effect net and adjusting the pitch and pixel size of the dot pattern of the effect net, the imitation fine matte dry particle surface (see Figure 2 ), imitation coarse dry particle surface (see Figure 3 ), and imitation coarse dry particle surface (see Figure 4 ) are presented.

[0107] Comparative Example 1-2 relative to Example 1, due to the difference in the raw materials for preparing the surface glaze layer, results in too high glossiness at the concave part, and the texture is quite different from that of natural stone.

[0108] Comparative Example 3-5 relative to Example 1, due to the use of conventional bright engraving ink, matte engraving ink, and sunken ink instead of matte micro-engraving ink, results in serious color deviation or shallow three-dimensionality of the glaze surface. Among them: the bright engraving ink results in red color deviation at the concave part, high glossiness at the concave part, and shallow three-dimensionality (see Figure 5 ), the matte engraving ink results in blue color deviation at the concave part and shallow three-dimensionality (see Figure 6 ), and the sunken ink results in high glossiness at the concave part and yellow color deviation (see Figure 7 ).

[0109] Comparative Examples 6-8 relative to Example 1, due to the difference in the raw materials for preparing the base protective glaze or the matte transparent dry particles therein, results in too high glossiness of the protective glaze surface or the concave part, and the imitation dry particle surface effect cannot be achieved.

[0110] Comparative Example 9 relative to Example 1, due to the absence of the second matte transparent dry particles in the base protective glaze material, results in increased glossiness at the concave part and shallow three-dimensionality, and the imitation dry particle surface effect cannot be achieved.

[0111] For those skilled in the art to which the present application belongs, without departing from the concept of the present application, a number of simple deductions or substitutions can be made without having to undergo creative labor. Therefore, simple improvements made by those skilled in the art to the present application based on the disclosure of the present application should be within the protection scope of the present application. The above examples are preferred embodiments of the present application, and any similar processes and equivalent changes made thereto should be within the protection scope of the present application.

Claims

1. A ceramic tile, characterized in that, From bottom to top, it includes the body, the surface glaze layer, the colored ink layer, the matte micro-carved ink layer, and the protective glaze layer; The raw materials for preparing the surface glaze layer include, by weight: 10-15 parts potassium feldspar, 20-35 parts sodium feldspar, 10-20 parts nepheline, 5-10 parts washed clay, 3-10 parts calcined kaolin, 2-10 parts quartz, 3-10 parts alumina, 8-15 parts barium carbonate, 4-10 parts wollastonite, 0-5 parts calcined talc, 0-4 parts calcined zinc oxide, and 5-15 parts zirconium silicate. The raw materials for preparing the matte micro-engraved ink layer include, by weight: 40-50 parts of inorganic materials, 3-8 parts of dispersant, and 40-60 parts of ester solvent; the inorganic materials are composed of bismuth vanadate and glass powder, and the initial melting temperature of the glass powder is 1130-1220℃; and the water contact angle of the ester solvent in the matte micro-engraved ink is greater than 90°, exhibiting hydrophobicity; The chemical composition of the glass powder, by weight percentage, includes: Al2O3 14-18%, SiO2 42-48%, Na2O 2-5%, K2O 1-3%, ZnO 5-9%, BaO 12-15%, CaO 3-6%, MgO 0-2%, SrO 3-7%; The raw materials for preparing the protective glaze layer include, by weight, 100 parts of basic protective glaze and 5-20 parts of first matte transparent dry granules; and the water contact angle of the protective glaze is less than 90°, exhibiting hydrophilicity. The chemical composition of the first matte transparent dry granules, by weight percentage, includes: Al2O3 18-22%, SiO2 50-55%, CaO 3-5%, K2O 3-5%, Na2O 1-4%, BaO 5-7%, ZnO 2-5%, SrO 2-5%; The components of the basic protective glaze, by weight, include: 15-25 parts of sodium feldspar, 15-25 parts of potassium feldspar, 5-15 parts of dolomite, 8-15 parts of washed clay, 8-20 parts of calcined kaolin, 2-8 parts of alumina, 10-15 parts of barium carbonate, 1-5 parts of calcined zinc oxide, and 10-20 parts of second matte transparent dry granules; the second matte transparent dry granules have the same chemical composition as the first matte transparent dry granules.

2. The ceramic tile according to claim 1, characterized in that, The weight ratio of bismuth vanadate to glass powder is (5-15):(85-95).

3. The ceramic tile according to claim 1, characterized in that, The ester solvent is selected from isooctyl palmitate and / or isooctyl laurate.

4. The ceramic tile according to claim 1, characterized in that, The particle size of the first matte transparent dry granules is 200-300 mesh.

5. A method for preparing ceramic tiles as described in any one of claims 1 to 4, characterized in that, Includes the following steps: A surface glaze, inkjet-printed colored ink and matte micro-carving ink are applied sequentially to the ceramic body, followed by a protective glaze, forming a surface glaze layer, a colored ink layer, a matte micro-carving ink layer and a protective glaze layer. After drying, the ceramic brick is fired in a kiln to obtain the ceramic brick.

6. The method for preparing ceramic bricks according to claim 5, characterized in that, The preparation process of the protective glaze is as follows: First, the second matte transparent dry particles are mixed with other raw materials for preparing the basic protective glaze, and then wet ball milled to obtain the basic protective glaze slurry; then the first matte transparent dry particles are added to the basic protective glaze slurry and mixed to obtain the glaze.

7. The method for preparing ceramic bricks according to claim 5, characterized in that, The specific gravity of the glaze is 1.85-1.94 g / cm³. 3 The glaze application rate is 400-800g / m². 2 ; And / or, the specific gravity of the protective glaze is 1.35-1.55 g / cm³. 3 The glaze application rate is 300-500g / m². 2 .

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