High-precision textured soft-light ceramic tile and its manufacturing process

Abstract

The application relates to the field of glazed tiles, in particular to a high-fine-texture soft-light-sensation surface ceramic tile. The ceramic tile comprises, from bottom to top, a body layer, a bottom glaze layer and a surface glaze layer, wherein the body layer is a ceramic tile body; the bottom glaze, in terms of mass parts, comprises the following raw materials: 12-20 parts of power plant cinder ash, 5-10 parts of white gangue, 10-15 parts of quartz sand, 10-15 parts of kaolin, 2-3 parts of high-alumina bauxite, 4-6 parts of magnesite, 12-15 parts of ball clay, 1-3 parts of black clay, 3-5 parts of montmorillonite, 12-18 parts of pyrophyllite, 10-15 parts of albite, 10-15 parts of potassium feldspar, 3-5 parts of zirconium silicate and 1-3 parts of high-boron glass powder. The application provides a high-fine-texture soft-light-sensation surface ceramic tile and a preparation process thereof, which can have self-cleaning effect, surface fineness and soft-light-sensation surface effect while having excellent anti-skid performance, thereby solving the problem that the performance of the existing glazed tile cannot be comprehensive.

Description

Technical Field

[0001] This application relates to the field of ceramic tiles, and in particular to high-fine textured soft-light ceramic tiles and their manufacturing process. Background Technology

[0002] With industrial development and improved living standards, people are paying more attention to health and safety. Consumers' demands for building decoration materials are no longer limited to aesthetics; they also place greater emphasis on product performance, especially performance related to their own safety, such as anti-slip and anti-fouling properties. Therefore, how to meet consumers' aesthetic needs while also providing excellent anti-slip and anti-fouling safety performance has become an important issue for practitioners in the building decoration materials industry.

[0003] Glazed tiles, as a building decoration material with excellent gloss and beautiful texture, can greatly satisfy consumers' aesthetic needs. However, simultaneously achieving the desired anti-slip and stain-resistant properties remains a significant challenge. Existing technologies for glazed tiles offer two solutions to this problem: one is to increase the surface roughness of the glazed tile, typically achieved through firing temperature, thereby increasing surface roughness to achieve an anti-slip effect. However, over long-term use, the rough surface structure easily traps dirt and grime, affecting the stain-resistant performance and making it difficult to meet the requirement of a smooth, glossy surface. The other approach involves adding porous particles to the glaze, creating surface pores during the glaze's preparation. While this improves stain resistance, the pores themselves offer poor anti-slip properties, actually reducing overall slip resistance. Therefore, balancing the anti-slip, smooth surface, and stain-resistant properties of glazed tiles has become a major challenge.

[0004] Therefore, in order to solve the above problems, this application provides high-fine texture soft light textured ceramic tile and its preparation process, which can have excellent anti-slip performance, as well as self-cleaning function and fine surface effect, thereby solving the problem that existing glazed tiles cannot fully combine the properties. Summary of the Invention

[0005] To address the aforementioned issues, the first aspect of this application provides a high-fineness textured soft-light ceramic tile and its preparation process, wherein the ceramic tile comprises, from bottom to top, a body layer, a base glaze layer, and a surface glaze layer.

[0006] As a preferred embodiment, the green body layer is a ceramic brick green body.

[0007] As a preferred embodiment, the base glaze layer is formed by applying a base glaze to the surface of the body layer.

[0008] As a preferred embodiment, the base glaze, by weight, comprises the following raw materials: 12-20 parts power plant slag ash, 5-10 parts white gangue, 10-15 parts quartz sand, 10-15 parts kaolin, 2-3 parts high-alumina bauxite, 4-6 parts magnesite, 12-15 parts ball clay, 1-3 parts black mud, 3-5 parts montmorillonite, 12-18 parts pyrophyllite, 10-15 parts albite, 10-15 parts potassium feldspar, 3-5 parts zirconium silicate, and 1-3 parts high borosilicate glass powder.

[0009] As a preferred embodiment, the aluminum content of the power plant slag ash is 20–60 wt%.

[0010] As a preferred embodiment, the aluminum content of the power plant slag ash is 45–60 wt%.

[0011] As a preferred embodiment, the whiteness of the white gangue is 70-85°.

[0012] As a preferred embodiment, the whiteness of the white gangue is 75-80°.

[0013] As a preferred embodiment, the surface roughness of the base glaze layer is Ra: 0.45~0.60μm.

[0014] As a preferred embodiment, the mass ratio of the power plant slag ash, white gangue, and pyrophyllite is (15-18):(6-8):(12-16).

[0015] As a preferred embodiment, the mass ratio of the power plant slag ash, white gangue, and pyrophyllite is (16-17):(6-8):(13-15).

[0016] As a preferred embodiment, the mass ratio of the power plant slag ash, white gangue, and pyrophyllite is 16:6:14.

[0017] The applicant discovered that when the mass ratio of power plant slag ash, white gangue, and pyrophyllite is (15-18):(6-8):(12-16), the glazed tiles can be guaranteed to have good surface anti-slip and anti-fouling properties, as well as a fine texture and soft gloss. Furthermore, the performance is optimal when the mass ratio of power plant slag ash, white gangue, and pyrophyllite is 16:6:14.

[0018] As a preferred embodiment, the average particle size of the base glaze is 200-400 mesh.

[0019] As a preferred embodiment, the average particle size of the base glaze is 250–350 mesh.

[0020] As a preferred embodiment, the surface glaze layer is formed by applying a surface glaze to the surface of the base glaze layer.

[0021] As a preferred embodiment, the raw materials for the surface glaze include at least a base glaze, filler particles, and corundum.

[0022] As a preferred embodiment, the mass ratio of the matrix glaze, filler particles and corundum is (8-12):(1-3):(1-3).

[0023] As a preferred embodiment, the mass ratio of the matrix glaze, filler particles and corundum is (10-12):(2-3):(1-2).

[0024] As a preferred embodiment, the mass ratio of the matrix glaze, filler particles, and corundum is 11:2.5:1.5.

[0025] As a preferred embodiment, the base glaze, by weight, comprises the following raw materials: 16-22 parts high-alumina bauxite, 5-8 parts diopside, 10-14 parts barium feldspar, 10-12 parts calcined talc, 30-40 parts sodium feldspar, 15-20 parts potassium feldspar, 3-5 parts calcite, and 3-5 parts borate.

[0026] The calcined talc has also undergone modification treatment, specifically the following modification method:

[0027] S11: First, place the calcined talc in a sodium dodecylbenzenesulfonate solution with a total volume of 3 to 5 times the calcined talc and mix thoroughly to obtain a calcined talc solution;

[0028] S12: Add 2-4 parts of yttrium nitrate solution to 6-10 parts of 6% chitosan solution and mix thoroughly. Then add 1-3 parts of stearic acid and 1-2 parts of nano-silica sol and continue to mix thoroughly to obtain the modifier.

[0029] S13: Mix the calcined talc solution and modifier at a weight ratio of (5-7):2 and ball mill. After ball milling, wash with water and dry. The mass fraction of the sodium dodecylbenzenesulfonate solution is 5-8% and the mass fraction of the yttrium nitrate solution is 2-4%. The ball milling speed for the mixed ball milling process is 1500 r / min and the ball milling time is 1 h.

[0030] As a preferred embodiment, the average particle size of the corundum is 200-300 mesh.

[0031] As a preferred embodiment, the average particle size of the corundum is 250 mesh.

[0032] As a preferred embodiment, the filler particles, by mass percentage, comprise: 90-95% filler particle A and 5-10% filler particle B.

[0033] As a preferred embodiment, the filler particles A include: silicon dioxide, aluminum oxide, iron oxide, calcium oxide, magnesium oxide, sodium oxide, potassium oxide, and barium oxide.

[0034] As a preferred embodiment, the average particle size of the filler particles A is 50 to 250 mesh.

[0035] As a preferred embodiment, the filler particle B is a modified composite particle.

[0036] As a preferred embodiment, the preparation method of the modified composite particles includes the following steps: S1: Zinc oxide is mixed and stirred with 25wt% ammonia water, and then added to ethanol for later use; S2: Tetraethyl orthosilicate is added dropwise to the solution obtained in S1, with a dropwise addition time of 1-2.5 h and a dropwise addition temperature of 40-45 °C; S3: After the dropwise addition is completed, multi-walled carbon nanotubes and zinc compounds are added, ethanol is added through a reflux tube, and the temperature is raised to 60-65 °C and kept at that temperature for 30-60 min; S4: Then, an ethanol solution containing 2-methylimidazole is added dropwise to the solution obtained in S3, with a dropwise addition time of 2.5-3.5 h, accompanied by stirring at a stirring speed of 50-100 r / min. After completion, the particles are centrifuged, washed, and vacuum dried to obtain the final product.

[0037] As a preferred embodiment, the mass ratio of zinc oxide, multi-walled carbon nanotubes, zinc compounds, and 2-methylimidazole is (1-2):(0.5-1.5):(2-3):(6-10).

[0038] As a preferred embodiment, the mass ratio of zinc oxide, multi-walled carbon nanotubes, zinc compounds and 2-methylimidazole is (1-1.5):(0.8-1.2):2.5:7.5.

[0039] As a preferred embodiment, the outer diameter of the multi-walled carbon nanotubes is 5–20 nm; the specific surface area of ​​the multi-walled carbon nanotubes is 220–300 m². 2 / g.

[0040] As a preferred embodiment, the average particle size of the modified composite particles is 300–600 nm.

[0041] As a preferred embodiment, the average particle size of the modified composite particles is 450–500 nm.

[0042] In this application, by incorporating the aforementioned modified composite particles into the surface glaze layer, the anti-slip and anti-fouling properties of glazed tiles can be effectively improved, while also further enhancing their weather resistance, especially their self-cleaning, weather-resistant, and anti-fouling effects outdoors. This is mainly because, through the aforementioned modification technology, a square-structured particle with surface multi-walled carbon nanotubes bonded together and internally encapsulated zinc oxide particles can be actually produced. The presence of these particles allows for the connection between the internal zinc oxide and the external multi-walled carbon nanotubes through coordination bonds, thereby forming a long transport pathway for photogenerated particles composed of the three substances. Furthermore, because the valence bands and conduction bands of the three substances are not at the same position, it can promote the formation of a heterojunction structure of photogenerated particles and particle-hole aggregation, thus keeping the surface in a highly active oxidized state for a long time. When pollutants accumulate, they can be directly decomposed, and under the action of rainwater and other liquids, the pollutant decomposition products can be directly dissolved and removed, thereby forming excellent self-cleaning properties.

[0043] The second aspect of this application provides a preparation process for the above-mentioned high-fine textured soft-light ceramic tile. The preparation method includes the following steps: S1: applying a base glaze to the surface of the body layer to form a base glaze layer; S2: applying a surface glaze layer to the surface of the base glaze layer to form a surface glaze layer, thus forming a glazed tile structure; S3: drying and firing the obtained glazed tile to obtain the final product.

[0044] Beneficial effects:

[0045] 1. This application provides a high-fine textured soft-light ceramic tile and its preparation process, which can have excellent anti-slip performance, self-cleaning function, and surface fineness and soft-light textured surface effect, thereby solving the problem that the performance of existing glazed tiles cannot be fully combined.

[0046] 2. This application provides a high-fineness textured soft-light ceramic tile, which limits the mass ratio of white gangue to power plant slag ash and pyrophyllite in the base glaze. This avoids the accumulation of pollutants in deep pits and the formation of an excessively thick covering layer on the surface of the base glaze due to too little or too much white gangue, which would cover the uneven surface formed by other materials. This ensures a balance of anti-slip performance, surface fineness, textured soft-light surface, and stain resistance of the glazed tile. The performance is optimal when the mass ratio of power plant slag ash, white gangue, and pyrophyllite is 16:6:14.

[0047] 3. This application provides a high-fine textured soft-light ceramic tile. By adding modified composite particles to the surface glaze layer, the anti-slip and anti-fouling performance of the glazed tile can be effectively improved, while also further improving the weather resistance of the glazed tile, especially the self-cleaning and anti-fouling effect outdoors. The photogenerated particles formed by the three substances have a long transport pathway, which makes the surface of the tile in a highly active oxidized state for a long time. When pollutants accumulate, they can be directly decomposed, and under the action of rainwater and other liquids, the pollutant decomposition products are directly dissolved and removed, thus forming excellent self-cleaning performance.

[0048] 4. The calcined talc is also modified by using sodium dodecylbenzene sulfonate solution to form a calcined talc liquid. Then, through the mutual adjustment of yttrium nitrate solution, chitosan solution, stearic acid and nano silica sol in the modifier, the calcined talc works together to optimize the improvement effect. The modified calcined talc in the system can assist the coordination effect between the base glaze, enhance the anti-slip, anti-fouling and high-quality texture of the product.

[0049] 5. This application provides a high-fine textured soft-light ceramic tile, which is simple to prepare and easy to operate. The resulting glazed tile does not have the surface burr feel of existing glazed tiles and has a high-fine textured soft-light surface effect. While ensuring the aesthetic appearance, it also improves its practicality and has a very good market prospect. Detailed Implementation

[0050] The following will further illustrate and demonstrate the technical solutions described above in this application through specific implementation schemes. Furthermore, the following embodiments are merely practical examples used to illustrate and explain the content of the technical solutions in the specification, and should not limit the scope of the claims to be protected by this application. All technical products based on the technical solutions described in this application should be covered within the scope of protection of this application.

[0051] In the following embodiments, unless otherwise specified, the raw materials are all commercially available products or can be prepared by methods known to those skilled in the art.

[0052] Example 1

[0053] Example 1 provides a high-fine textured soft-light ceramic tile, which, from bottom to top, includes a body layer, a base glaze layer, and a surface glaze layer.

[0054] The body layer is a ceramic brick body.

[0055] The base glaze layer is formed by applying the base glaze to the surface of the body layer; the base glaze, by weight, includes the following raw materials: 16 parts power plant slag ash, 6 parts white gangue, 12 parts quartz sand, 12 parts kaolin, 2 parts high-alumina bauxite, 5 parts magnesite, 13 parts ball clay, 2 parts black mud, 4 parts montmorillonite, 14 parts pyrophyllite, 12 parts sodium feldspar, 13 parts potassium feldspar, 4 parts zirconium silicate, and 2 parts high borosilicate glass powder.

[0056] The power plant slag ash comes from boiler ash from a power plant in Nantong, with an aluminum content of 53 wt%. The white gangue has a whiteness of 75°. The high borosilicate glass powder is a 200-mesh grade product sold by Hebei Huishun Mining Co., Ltd.

[0057] The base glaze has an average particle size of 300 mesh and is prepared by passing it through a 300-mesh sieve.

[0058] The surface roughness of the resulting base glaze layer is Ra: 0.55 μm.

[0059] The surface glaze is formed by coating the base glaze layer with a surface glaze. The raw materials of the surface glaze include the base glaze, filler particles and corundum, and the mass ratio of the base glaze, filler particles and corundum is 11:2.5:1.5.

[0060] The base glaze, by weight, comprises the following raw materials: 20 parts high-alumina bauxite, 6 parts diopside, 12 parts barium feldspar, 12 parts calcined talc, 40 parts sodium feldspar, 18 parts potassium feldspar, 4 parts calcite, and 4 parts borate; the calcined talc has also undergone modification treatment, the specific modification method being as follows:

[0061] S11: First, place the calcined talc in a sodium dodecylbenzenesulfonate solution with a volume of 3 times the total amount of calcined talc and mix thoroughly to obtain a calcined talc solution;

[0062] S12: Add 2 parts of yttrium nitrate solution to 6 parts of 6% chitosan solution and mix thoroughly. Then add 1 part of stearic acid and 1 part of nano-silica sol and continue to mix thoroughly to obtain the modifier.

[0063] S13: Mix the calcined talc solution and the modifier at a weight ratio of 5:2 and ball mill them. After ball milling, wash with water and dry. The mass fraction of the sodium dodecylbenzenesulfonate solution is 5% and the mass fraction of the yttrium nitrate solution is 2%. The ball milling speed for the mixed ball milling process is 1500 r / min and the ball milling time is 1 h.

[0064] The average particle size of corundum is 250 mesh.

[0065] The filler particles, by mass percentage, comprise: 90% filler particle A and 10% filler particle B.

[0066] Filler particles A include: 22% silica, 0.4% iron oxide, 5% calcium oxide, 2% magnesium oxide, 1% sodium oxide, 1% potassium oxide, 4% barium oxide, and aluminum oxide as a supplementary balance.

[0067] Filler particle B is a modified composite particle. The preparation method of the modified composite particle includes the following steps, by mass: S1: Mix 1.2 parts of zinc oxide with 10 parts of 25wt% ammonia water and stir, then add to 80 parts of ethanol for later use; S2: Add 5 parts of tetraethyl orthosilicate dropwise to the solution obtained in S1, with a dropwise addition time of 2 hours and a dropwise addition temperature of 45℃; S3: After the dropwise addition is completed, add 1 part of multi-walled carbon nanotubes and 2.5 parts of zinc nitrate, add 20 parts of ethanol through a reflux tube, and heat to 60℃ and keep warm for 45 minutes; S4: Then add 60 parts of ethanol solution containing 7.5 parts of 2-methylimidazole dropwise to the solution obtained in S3 above, with a dropwise addition time of 3 hours, accompanied by stirring at a stirring speed of 60 r / min. After completion, centrifuge, wash, and vacuum dry to obtain the final product.

[0068] The multi-walled carbon nanotubes are products sold by Shenzhen Liyou New Energy Technology Co., Ltd., with an average inner diameter of 4nm, an average outer diameter of 10nm, and a specific surface area of ​​240m². 2 / g.

[0069] The average particle size of the modified composite particles is 480 nm.

[0070] The second aspect of this embodiment also provides a method for preparing the above-mentioned high-fine texture soft light textured ceramic tile. The preparation method includes the following steps: S1: applying a base glaze to the surface of the body layer to form a base glaze layer; S2: applying a surface glaze layer to the surface of the base glaze layer to form a surface glaze layer, forming a glazed tile structure; S3: drying the obtained glazed tile and firing it to obtain the final product.

[0071] The base glaze application rate is 0.8 kg / m². 2 The surface glaze coating amount is 0.25 kg / m². 2 .

[0072] The firing conditions were a ceramic roller kiln with a temperature of 1190–1210℃ and a firing time of 58 minutes.

[0073] Example 2

[0074] Example 2 provides a high-fine textured soft-light ceramic tile, which, from bottom to top, includes a body layer, a base glaze layer, and a surface glaze layer.

[0075] The body layer is a ceramic brick body.

[0076] The base glaze layer is formed by applying the base glaze to the surface of the body layer; the base glaze, by weight, includes the following raw materials: 16 parts power plant slag ash, 6 parts white gangue, 12 parts quartz sand, 12 parts kaolin, 2 parts high-alumina bauxite, 5 parts magnesite, 13 parts ball clay, 2 parts black mud, 4 parts montmorillonite, 14 parts pyrophyllite, 12 parts sodium feldspar, 13 parts potassium feldspar, 4 parts zirconium silicate, and 2 parts high borosilicate glass powder.

[0077] The power plant slag ash comes from boiler ash from a power plant in Nantong, with an aluminum content of 53 wt%. The white gangue has a whiteness of 75°. The high borosilicate glass powder is a 200-mesh grade product sold by Hebei Huishun Mining Co., Ltd.

[0078] The base glaze has an average particle size of 300 mesh and is prepared by passing it through a 300-mesh sieve.

[0079] The surface roughness of the resulting base glaze layer is Ra: 0.55 μm.

[0080] The surface glaze is formed by coating the base glaze layer with a surface glaze. The raw materials of the surface glaze include the base glaze, filler particles and corundum, and the mass ratio of the base glaze, filler particles and corundum is 10:3:1.

[0081] The base glaze, by weight, comprises the following raw materials: 20 parts high-alumina bauxite, 6 parts diopside, 12 parts barium feldspar, 12 parts calcined talc, 40 parts sodium feldspar, 18 parts potassium feldspar, 4 parts calcite, and 4 parts borate; the calcined talc has also undergone modification treatment, the specific modification method being as follows:

[0082] S11: First, place the calcined talc in a sodium dodecylbenzenesulfonate solution with a volume of 5 times that of the calcined talc and mix thoroughly to obtain a calcined talc solution;

[0083] S12: Add 4 parts of yttrium nitrate solution to 10 parts of 6% chitosan solution and mix thoroughly. Then add 3 parts of stearic acid and 2 parts of nano-silica sol and continue to mix thoroughly to obtain the modifier.

[0084] S13: Mix the calcined talc solution and the modifier at a weight ratio of 7:2 and ball mill them. After ball milling, wash with water and dry. The sodium dodecylbenzenesulfonate solution has a mass fraction of 8% and the yttrium nitrate solution has a mass fraction of 4%. The ball milling speed for the mixed ball milling process is 1500 r / min and the process lasts for 1 hour.

[0085] The average particle size of corundum is 200 mesh.

[0086] The filler particles, by mass percentage, comprise: 90% filler particle A and 10% filler particle B.

[0087] Filler particles A include: 22% silica, 0.4% iron oxide, 5% calcium oxide, 2% magnesium oxide, 1% sodium oxide, 1% potassium oxide, 4% barium oxide, and aluminum oxide as a supplementary balance.

[0088] Filler particle B is a modified composite particle. The preparation method of the modified composite particle includes the following steps, by mass: S1: Mix 1.2 parts of zinc oxide with 10 parts of 25wt% ammonia water and stir, then add to 80 parts of ethanol for later use; S2: Add 5 parts of tetraethyl orthosilicate dropwise to the solution obtained in S1, with a dropwise addition time of 2 hours and a dropwise addition temperature of 45℃; S3: After the dropwise addition is completed, add 1 part of multi-walled carbon nanotubes and 2.5 parts of zinc nitrate, add 20 parts of ethanol through a reflux tube, and heat to 60℃ and keep warm for 45 minutes; S4: Then add 60 parts of ethanol solution containing 7.5 parts of 2-methylimidazole dropwise to the solution obtained in S3 above, with a dropwise addition time of 3 hours, accompanied by stirring at a stirring speed of 60 r / min. After completion, centrifuge, wash, and vacuum dry to obtain the final product.

[0089] The multi-walled carbon nanotubes are products sold by Shenzhen Liyou New Energy Technology Co., Ltd., with an average inner diameter of 4nm, an average outer diameter of 10nm, and a specific surface area of ​​240m². 2 / g.

[0090] The average particle size of the modified composite particles is 480 nm.

[0091] The second aspect of this embodiment also provides a method for preparing the above-mentioned high-fine texture soft light textured ceramic tile. The preparation method includes the following steps: S1: applying a base glaze to the surface of the body layer to form a base glaze layer; S2: applying a surface glaze layer to the surface of the base glaze layer to form a surface glaze layer, forming a glazed tile structure; S3: drying the obtained glazed tile and firing it to obtain the final product.

[0092] The base glaze application rate is 0.8 kg / m². 2 The surface glaze coating amount is 0.25 kg / m². 2 .

[0093] The firing conditions were a ceramic roller kiln with a temperature of 1190–1210℃ and a firing time of 58 minutes.

[0094] Example 3

[0095] Example 3 provides a high-fine textured soft-light ceramic tile, which, from bottom to top, includes a body layer, a base glaze layer, and a surface glaze layer.

[0096] The body layer is a ceramic brick body.

[0097] The base glaze layer is formed by applying a base glaze to the surface of the body layer; the base glaze, by weight, includes the following raw materials: 18 parts power plant slag ash, 8 parts white gangue, 12 parts quartz sand, 12 parts kaolin, 2 parts high-alumina bauxite, 5 parts magnesite, 13 parts ball clay, 2 parts black mud, 4 parts montmorillonite, 12 parts pyrophyllite, 12 parts sodium feldspar, 13 parts potassium feldspar, 4 parts zirconium silicate, and 2 parts high borosilicate glass powder.

[0098] The power plant slag ash comes from boiler ash from a power plant in Nantong, with an aluminum content of 53 wt%. The white gangue has a whiteness of 75°. The high borosilicate glass powder is a 200-mesh grade product sold by Hebei Huishun Mining Co., Ltd.

[0099] The base glaze has an average particle size of 300 mesh and is prepared by passing it through a 300-mesh sieve.

[0100] The surface roughness of the resulting base glaze layer is Ra: 0.55 μm.

[0101] The surface glaze is formed by coating the base glaze layer with a surface glaze. The raw materials of the surface glaze include the base glaze, filler particles and corundum, and the mass ratio of the base glaze, filler particles and corundum is 11:2.5:1.5.

[0102] The base glaze, by weight, comprises the following raw materials: 20 parts high-alumina bauxite, 6 parts diopside, 12 parts barium feldspar, 12 parts calcined talc, 40 parts sodium feldspar, 18 parts potassium feldspar, 4 parts calcite, and 4 parts borate; the calcined talc has also undergone modification treatment, the specific modification method being as follows:

[0103] S11: First, place the calcined talc in a sodium dodecylbenzenesulfonate solution with a volume of 4 times that of the calcined talc and mix thoroughly to obtain a calcined talc solution;

[0104] S12: Add 3 parts of yttrium nitrate solution to 8 parts of 6% chitosan solution and mix thoroughly. Then add 2 parts of stearic acid and 1.5 parts of nano-silica sol and continue to mix thoroughly to obtain the modifier.

[0105] S13: Mix the calcined talc solution and modifier at a weight ratio of 3:1 and ball mill. After ball milling, wash with water and dry. The mass fraction of the sodium dodecylbenzenesulfonate solution is 6.5% and the mass fraction of the yttrium nitrate solution is 3%. The ball milling speed for the mixed ball milling process is 1500 r / min and the process lasts for 1 hour.

[0106] The average particle size of corundum is 250 mesh.

[0107] The filler particles, by mass percentage, comprise: 90% filler particle A and 10% filler particle B.

[0108] Filler particles A include: 22% silica, 0.4% iron oxide, 5% calcium oxide, 2% magnesium oxide, 1% sodium oxide, 1% potassium oxide, 4% barium oxide, and aluminum oxide as a supplementary balance.

[0109] Filler particle B is a modified composite particle. The preparation method of the modified composite particle includes the following steps, by mass: S1: Mix 1.2 parts of zinc oxide with 10 parts of 25wt% ammonia water and stir, then add to 80 parts of ethanol for later use; S2: Add 5 parts of tetraethyl orthosilicate to the solution obtained in S1 dropwise for 2 hours at a temperature of 45°C; S3: After the dropwise addition is complete, add 1 part of multi-walled carbon nanotubes and 2.5 parts of zinc nitrate, add 20 parts of ethanol via a reflux tube, and heat to 60°C for 45 minutes; S4: Then add 60 parts of ethanol solution containing 7.5 parts of 2-methylimidazole dropwise to the solution obtained in S3 dropwise for 3.5 hours while stirring at 60 r / min. After completion, centrifuge, wash, and vacuum dry to obtain the final product.

[0110] The multi-walled carbon nanotubes are products sold by Shenzhen Liyou New Energy Technology Co., Ltd., with an average inner diameter of 4nm, an average outer diameter of 10nm, and a specific surface area of ​​240m². 2 / g.

[0111] The average particle size of the modified composite particles is 500 nm.

[0112] The second aspect of this embodiment also provides a method for preparing the above-mentioned high-fine texture soft light textured ceramic tile. The preparation method includes the following steps: S1: applying a base glaze to the surface of the body layer to form a base glaze layer; S2: applying a surface glaze layer to the surface of the base glaze layer to form a surface glaze layer, forming a glazed tile structure; S3: drying the obtained glazed tile and firing it to obtain the final product.

[0113] The base glaze application rate is 0.8 kg / m². 2 The surface glaze coating amount is 0.25 kg / m². 2 .

[0114] The firing conditions are a ceramic roller kiln, with a temperature of 1190–1210℃ and a firing time of 60 minutes.

[0115] Comparative Example 1

[0116] The specific implementation method of this comparative example is basically the same as that of Example 1, except that: the base glaze, by mass, includes the following raw materials: 20 parts of power plant slag ash, 2 parts of white gangue, 12 parts of quartz sand, 12 parts of kaolin, 2 parts of high-alumina bauxite, 5 parts of magnesite, 13 parts of ball clay, 2 parts of black mud, 4 parts of montmorillonite, 12 parts of pyrophyllite, 12 parts of albite, 13 parts of potassium feldspar, 4 parts of zirconium silicate, and 2 parts of high borosilicate glass powder.

[0117] Comparative Example 2

[0118] The specific implementation method of this comparative example is basically the same as that of Example 1, except that: the base glaze, by mass, includes the following raw materials: 16 parts of power plant slag ash, 12 parts of white gangue, 12 parts of quartz sand, 12 parts of kaolin, 2 parts of high-alumina bauxite, 5 parts of magnesite, 13 parts of ball clay, 2 parts of black mud, 4 parts of montmorillonite, 12 parts of pyrophyllite, 12 parts of albite, 13 parts of potassium feldspar, 4 parts of zirconium silicate, and 2 parts of high borosilicate glass powder.

[0119] Comparative Example 3

[0120] The specific implementation method of this comparative example is basically the same as that of Example 1, except that: the content of filler particle A is 95%, the content of filler particle B is 5%, and filler particle B is 4.5% zinc oxide and 0.5% titanium dioxide.

[0121] Comparative Example 4

[0122] The specific implementation method of this comparative example is basically the same as that of Example 1, except that: the filler particle B is a modified composite particle. The preparation method of the modified composite particle includes the following steps, in parts by mass: S1: Mix 0.5 parts of zinc oxide with 10 parts of 25wt% ammonia water and stir, then add it to 80 parts of ethanol for later use; S2: Add 5 parts of tetraethyl orthosilicate to the solution obtained in S1 dropwise for 2 hours at a temperature of 45°C; S3: After the dropwise addition is complete, add 2.5 parts of multi-walled carbon nanotubes and 2.5 parts of zinc nitrate, add 20 parts of ethanol to the reflux tube, and heat to 60°C for 45 minutes; S4: Then add 60 parts of ethanol solution containing 7.5 parts of 2-methylimidazole dropwise to the solution obtained in S3 dropwise for 3 hours, while stirring at a speed of 60 r / min. After completion, centrifuge, wash, and vacuum dry to obtain the final product.

[0123] Comparative Example 5

[0124] The specific implementation method of this comparative example is basically the same as that of Example 1, except that: the filler particle B is a modified composite particle. The preparation method of the modified composite particle includes the following steps, in parts by mass: S1: Mix 1.2 parts of zinc oxide with 10 parts of 25wt% ammonia water and stir, then add it to 80 parts of ethanol for later use; S2: Add 5 parts of tetraethyl orthosilicate to the solution obtained in S1 dropwise for 2 hours at a temperature of 45°C; S3: After the dropwise addition is complete, add 1 part of multi-walled carbon nanotubes and 1.5 parts of zinc nitrate, add 20 parts of ethanol to the reflux tube, and heat to 60°C for 45 minutes; S4: Then add 60 parts of ethanol solution containing 5 parts of 2-methylimidazole dropwise to the solution obtained in S3 dropwise for 3 hours, accompanied by stirring at a speed of 60 r / min. After completion, centrifuge, wash, and vacuum dry to obtain the final product.

[0125] Comparative Example 6

[0126] The specific implementation method of this comparative example is basically the same as that of Example 1, except that the calcined talc has not been modified.

[0127] Comparative Example 7

[0128] The specific implementation method of this comparative example is basically the same as that of Example 1, except that no modifier is added in the calcined talc modification.

[0129] Comparative Example 8

[0130] The specific implementation method of this comparative example is basically the same as that of Example 1, except that yttrium nitrate solution and nano silica sol were not added to the modifier.

[0131] Comparative Example 9

[0132] The specific implementation method of this comparative example is basically the same as that of Example 1, except that stearic acid and chitosan solution were not added to the modifier.

[0133] Performance Evaluation

[0134] Anti-slip test: The glazed tiles prepared in the examples and comparative examples were tested according to "DIN51130 Anti-slip Test for Flooring". The angles obtained from the test were recorded, and the average value of 10 tests was recorded in Table 1.

[0135] Stain resistance test: According to GB / T 3810.14 2006 "Test Methods for Ceramic Tiles" Part 14: Determination of stain resistance, the specific operation is as follows: Blue ink, black ink, red ink, blue marker, black marker, and red marker are left on the surface of the ceramic tiles prepared in the examples and comparative examples for 60 minutes, and then gently wiped with water and a cloth. The stain resistance performance level is measured, and the results are recorded in Table 1.

[0136] Outdoor self-cleaning property: The glazed tiles prepared in the examples and comparative examples were placed in the same outdoor area for 12 months. After 12 months, they were gently wiped with water and a cloth, and the stains on the surface were observed. If the stain area was ≥15%, it was considered unqualified, otherwise it was considered qualified. 100 samples were tested for each example and comparative example, and the pass rate of each group was recorded. Pass rate (%) = number of qualified samples / 100 × 100%. The results were recorded in Table 1.

[0137] Table 1

[0138]

[0139]

[0140]

[0141] From the embodiments and comparative examples of this application, as well as the data results in Table 1, it can be seen that the glazed tiles prepared in this application not only have excellent anti-slip and anti-fouling properties, a fine glaze texture, and a soft-light feel, but also maintain a self-cleaning effect when used outdoors, reducing manual maintenance costs. Comparative Examples 1 and 2, however, used too much or too little white gangue, resulting in the accumulation of pollutants in deep pits and the formation of an excessively thick covering layer on the surface of the base glaze, thus covering the uneven surface formed by other materials. This reduced the corresponding anti-slip and anti-fouling properties, and resulted in poor fine glaze texture and a poor soft-light feel. Comparative Examples 3-5, because they did not use specific modified composite particles, lacked or failed to form a complete photogenerated particle long transport pathway composed of the three substances, making it impossible for the surface to remain in a highly active oxidative state for a long time. When pollutants accumulated, they could not be effectively decomposed, resulting in a significant reduction in self-cleaning effect and poor glaze texture.

[0142] As can be seen from Comparative Examples 6-9, the anti-fouling, smoothness, and soft-light texture of the calcined talc without modification treatment are significantly reduced. Furthermore, the performance of the products deteriorates to varying degrees when no modifier, yttrium nitrate solution, nano-silica sol, stearic acid, or chitosan solution are added during the modification of calcined talc. Only the process of modifying calcined talc using the method of this invention with the added modifier results in the most significant performance improvement. Other methods are not as effective as those of this invention.

Claims

1. High-texture soft-light quality ceramic tile, characterized by: The ceramic tile comprises a body layer, a bottom glaze layer and a surface glaze layer from bottom to top; The body layer is a ceramic tile body; The bottom glaze layer is formed by coating the bottom glaze on the surface of the body layer; The bottom glaze comprises, in parts by mass, 12-20 parts of power plant slag ash, 5-10 parts of white gangue, 10-15 parts of quartz sand, 10-15 parts of kaolin, 2-3 parts of bauxite, 4-6 parts of magnesite, 12-15 parts of ball clay, 1-3 parts of black clay, 3-5 parts of montmorillonite, 12-18 parts of phlogopite, 10-15 parts of sodium feldspar, 10-15 parts of potassium feldspar, 3-5 parts of zirconium silicate and 1-3 parts of high-boron glass powder; The surface glaze layer is formed by coating the surface glaze on the surface of the bottom glaze layer; the raw materials of the surface glaze at least include base glaze, filler particles and corundum; The base glaze comprises, in parts by mass, 16-22 parts of bauxite, 5-8 parts of diopside, 10-14 parts of barium feldspar, 10-12 parts of calcined talc, 30-40 parts of sodium feldspar, 15-20 parts of potassium feldspar, 3-5 parts of calcite and 3-5 parts of barylite; The filler particles comprise, in percentage by mass, 90-95% of filler particle A and 5-10% of filler particle B; the filler particle A comprises silicon dioxide, aluminum oxide, iron oxide, calcium oxide, magnesium oxide, sodium oxide, potassium oxide and barium oxide; The filler particle B is a modified composite particle; the preparation method of the modified composite particle comprises the following steps: S1: mixing and stirring zinc oxide with 25wt% ammonia water, and then adding into ethanol for standby; S2: dropping tetraethyl orthosilicate into the solution obtained in S1, the dropping time is 1-2.5h and the dropping temperature is 40-45℃; S3: after the dropping is completed, adding multi-walled carbon nanotubes and zinc compound, adding a reflux tube to supplement ethanol, and heating to 60-65℃, and keeping warm for 30-60min; S4: then dropping 2-methyl imidazole-containing ethanol solution into the solution obtained in S3, the dropping time is 2.5-3.5h, and stirring is accompanied with a stirring speed of 50-100r / min, and after completion, centrifugal washing and vacuum drying are performed to obtain the modified composite particle.

2. The high-texture soft-light effect ceramic tile according to claim 1, characterized in that: The aluminum content of the power plant slag ash is 20-60wt%; The whiteness of the white gangue is 70-85°; The surface roughness of the bottom glaze layer is Ra: 0.45-0.60μm; The mass ratio of the power plant slag ash, the white gangue and the phlogopite is (15-18):(6-8):(12-16); the average particle size of the bottom glaze is 200-400mesh.

3. The high-texture soft-light effect ceramic tile according to claim 1, characterized in that: The mass ratio of the base glaze, the filler particles and the corundum is (8-12):(1-3):(1-3); the average particle size of the corundum is 200-300mesh.

4. The high-texture soft-light effect ceramic tile according to claim 1, characterized in that: The calcined talc is further modified; the specific modification method is as follows: S11: mixing and stirring the calcined talc in sodium dodecyl benzene sulfonate solution with 3-5 times of the total amount of the calcined talc to obtain calcined talc solution; S12: 2-4 parts of yttrium nitrate solution is added into 6-10 parts of 6% mass fraction chitosan solution and mixed well, then 1-3 parts of stearic acid and 1-2 parts of nano silicon sol are added and mixed well, to obtain a modifier; S13: the modified talc and the modifier are mixed and ball milled according to a weight ratio of (5-7):2, and after ball milling, water washing and drying, the product is obtained.

5. The high-vein-embossed soft-light texture ceramic tile according to claim 4, characterized in that: The mass fraction of the sodium dodecyl benzene sulfonate solution is 5-8%; the mass fraction of the yttrium nitrate solution is 2-4%.

6. The high-texture soft-light effect ceramic tile according to claim 4, characterized in that: The ball milling speed of the mixed ball milling treatment is 1500 r / min, and the ball milling time is 1 h.

7. A process for the preparation of high-vein-soft-light- texture ceramic tiles according to any one of claims 1 to 6, characterized by the fact that: Preparation method comprising the following steps: S1: applying a base glaze on the surface of the green body layer to form a base glaze layer; S2: applying a surface glaze layer on the surface of the base glaze layer to form a surface glaze layer, to form a glazed tile structure; S3: drying the obtained glazed tile and then firing, to obtain the product.

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