A double-positioning tile with a light-matte effect and a method for manufacturing the same

Abstract

The application discloses a kind of double-positioning ceramic tiles of light and dull effect and preparation method thereof, belong to building material technical field.The application is by adding first dry particle and second dry particle, after firing, the surface of ceramic tile forms clear light and dull double-positioning effect;In addition, the application is by optimizing the composition of protective glaze, using low-temperature transparent frit, can melt prior to first dry particle and second dry particle, effectively fill between dry particle, not only can avoid the influence of traditional glaze directly covering on light and dull effect, make light and dull boundary clear, transition natural, also help to improve the density of ceramic tile surface, and then improve the wear resistance of ceramic tile, simultaneously join modified diamond micro powder and silicon micro powder, can further improve the density of glaze surface, and then improve wear resistance and stain resistance;Again optimize firing process, avoid the pinhole, wave pattern defect of glaze surface caused by violent reaction, significantly improve the apparent quality of product, obtain the double-positioning ceramic tile of light and dull effect of wear resistance and stain resistance.

Description

Technical Field

[0001] This invention relates to the field of building materials technology, and more specifically, to a dual-positioning ceramic tile with a glossy / matte finish and its preparation method. Background Technology

[0002] As a building decoration material, the surface finish of ceramic tiles directly affects the decorative effect and user experience. Currently, most ceramic tiles on the market use a single gloss level, such as full gloss, full matte, or a single texture, making it difficult to achieve a multi-layered, contrasting gloss-matte composite effect on the same tile surface. With the market's increasing demands for decorative effects, single-gloss / matte or single-texture tiles can no longer meet the diverse and artistic design needs.

[0003] In existing technologies, to achieve a glossy-matte effect, adjustments to the glaze formula and the addition of matte agents (such as zinc oxide and calcium oxide) are often used. However, these methods often result in a monotonous surface texture, insufficient quality, and a lack of three-dimensionality and artistry. For example, Chinese patent application number CN202211441739.7 discloses a matte glaze, matte ceramic tile, and its preparation method. While it has a certain matte effect, its artistic quality still needs improvement. Another example is Chinese patent application number CN202511260219.X, which discloses a ceramic tile with a composite effect of gloss and matte finish. From bottom to top, it includes a body layer, a matte glaze layer, a pattern layer, and a gloss layer. The gloss of the matte glaze layer is less than 6 GU. The raw materials for preparing the gloss layer include gloss particles, which, by weight, consist of 60-80 parts mica titanium pearl powder, 10-20 parts coated aluminum powder, and 5-10 parts glass microspheres. This invention combines a matte glaze with shimmering particles. The matte glaze provides a soft, understated base, while the shimmering particles create localized, bright reflective points on the matte background. The two contrast sharply yet complement each other, maintaining the sophisticated texture of the matte finish while adding dynamic, shimmering highlights. This maximizes the simulation of the complex beauty of the coexistence of a matte base and the shimmering light of mineral crystals in natural stone. However, traditional matte-gloss composite tiles often use double glazing or partial printing of matte glaze, which suffers from complex processes, high costs, unnatural gloss transitions, obscured texture details, reduced clarity, weak three-dimensionality, and difficulty in accurately distinguishing different areas. Furthermore, existing matte glazes often rely on high-silicon-aluminum systems, resulting in insufficient glaze hardness and poor wear resistance. Summary of the Invention

[0004] Based on this, in order to solve one of the above-mentioned technical problems, the present invention provides a dual-positioning ceramic tile with a glossy / matte effect and its preparation method, the specific technical solution of which is as follows:

[0005] A dual-positioning ceramic tile with a glossy / matte finish, wherein the dual-positioning ceramic tile comprises, from bottom to top, a body layer, a base glaze layer, a pattern layer, a dry granule layer, and a protective glaze layer;

[0006] The dry granule layer comprises a first dry granule and a second dry granule. The first dry granule comprises the following chemical composition by mass percentage: SiO2: 38%~42%, Al2O3: 20%~24%, CaO: 18%~20%, MgO: 1.5%~2%, K2O: 3%~4.5%, Na2O: 0.2%~1%, ZnO: 8%~10%, BaO: 1%~2.5%, B2O3: 1%~2.5%, and loss on ignition: 0.5%~2%.

[0007] The second dry granules comprise the following chemical composition by mass percentage: SiO2: 40%~50%, Al2O3: 10%~20%, CaO: 18%~20%, MgO: 1.5%~2%, K2O: 3%~4.5%, Na2O: 0.2%~1%, ZnO: 8%~10%, BaO: 1%~2.5%, B2O3: 1%~2.5%, and loss on ignition: 0.5%~2%.

[0008] The protective glaze layer is prepared by means of a protective glaze, and the protective glaze comprises the following raw materials in parts by weight: 18 to 20 parts of calcined kaolin, 30 to 45 parts of low-temperature transparent frit, 3 to 7 parts of wear-resistant reinforcing agent, 0.1 to 0.3 parts of dispersant, and 0.1 to 1 part of defoamer.

[0009] Furthermore, the initial melting temperature of the first dry granules is 1100℃~1140℃, the initial melting temperature of the second dry granules is 1000℃~1140℃, and the initial melting temperature of the low-temperature transparent frit is 900℃~1000℃.

[0010] Furthermore, the low-temperature transparent frit comprises the following chemical composition by mass percentage: SiO2: 45%~55%, Al2O3: 5%~10%, B2O3: 17%~22%, Y2O3: 1%~3%, CaO: 1%~3%, K2O: 2%~4%, Na2O: 1%~3%, ZnO: 1%~5%, and loss on ignition: 0.5%~2%.

[0011] Further, the preparation method of the wear-resistant reinforcing agent is as follows: diamond micro powder and silicon micro powder are mixed evenly and dispersed in an alcohol solution of silane coupling agent, ultrasonically dispersed, then heated to 65℃~70℃, stirred at a speed of 50r / min~100r / min for 20min~60min, and then centrifuged, washed and dried to obtain the wear-resistant reinforcing agent.

[0012] Further, by weight, the ratio of the diamond micro powder, silicon micro powder, and silane coupling agent in the alcohol solution is (4~7):(3~6):(10~25).

[0013] Furthermore, the conditions for ultrasonic dispersion are: power of 100W~200W, frequency of 20kHz~50kHz, and time of 5min~20min.

[0014] Further, the alcohol solution of the silane coupling agent is obtained by mixing γ-glycidoxypropyltrimethoxysilane, tridecafluorooctyltriethoxysilane, ethanol and water in a weight ratio of (10~15):(7~12):(20~40):(10~30).

[0015] Furthermore, the dispersant is at least one of sodium tripolyphosphate, sodium carboxymethyl cellulose, and sodium hexametaphosphate.

[0016] Furthermore, the protective glaze is prepared by mixing calcined kaolin, low-temperature transparent frit, wear-resistant reinforcing agent, dispersant and defoamer, adding water and performing wet ball milling, and passing through a 320-340 mesh sieve to obtain the protective glaze.

[0017] In addition, the present invention also provides a method for preparing a dual-positioning ceramic tile with a glossy-matte effect, the method comprising the following steps:

[0018] S1. Apply a base glaze to the body layer, and form a base glaze layer after drying;

[0019] S2. Inkjet printing is performed on the base glaze layer to form a pattern layer;

[0020] S3. Apply the first dry granules using a dry granule spreading device to form a pre-lay layer for the first dry granule positioning area, and apply the second dry granules using the same device to form a pre-lay layer for the second dry granule positioning area, thus forming a dry granule layer;

[0021] S4. Apply a protective glaze evenly to the dry granule layer, and dry it to form a protective glaze layer;

[0022] S5. Heat to 950℃~1100℃ at a heating rate of 5℃ / min~8℃ / min, hold for 10min~20min, then heat to 1150℃~1210℃ at a heating rate of 1℃ / min~3℃ / min, and fire for 40min~60min to obtain a dual-positioning ceramic tile with a glossy and matte finish.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. This invention sets first dry granules and second dry granules with different chemical composition ratios, so that the first dry granules have a high aluminum matte finish and the second dry granules have a low aluminum high gloss finish. After firing, the surface of the tile forms a clear dual-positioning effect of gloss and matte. Moreover, the first dry granules and the second dry granules have different particle sizes, which helps to enhance the visual contrast between gloss and matte from a physical structure perspective, resulting in better artistic appreciation.

[0025] 2. This invention optimizes the composition of the protective glaze by using a low-temperature transparent frit that melts before the first and second dry granules, effectively filling the spaces between them. This not only avoids the negative impact of direct coverage on the gloss / matte effect, promoting clear gloss / matte boundaries and a natural transition, but also helps improve the density of the tile surface. Furthermore, the low-temperature transparent frit not only has high light transmittance and excellent texture, but its vitrification also improves the tile's wear resistance.

[0026] 3. The present invention uses diamond micro powder and silicon micro powder to form a compound, and after modification treatment, it helps to improve their compatibility, dispersibility and stability in the protective glaze. The glaze with excellent density helps to improve the overall wear resistance and stain resistance of the ceramic tile.

[0027] 4. This invention optimizes the firing process by first fully melting and filling the low-temperature molten block, and then raising the temperature. The first and second dry particles melt smoothly in the molten matrix, avoiding violent reactions that could cause pinholes and wavy defects on the glaze surface. This significantly improves the appearance quality of the product and results in dual-positioning ceramic tiles with excellent wear resistance and stain resistance, exhibiting a glossy-matte finish. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to its embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of protection of the invention.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] An embodiment of the present invention provides a dual-positioning ceramic tile with a glossy / matte finish, wherein the dual-positioning ceramic tile comprises, from bottom to top, a body layer, a base glaze layer, a pattern layer, a dry granule layer, and a protective glaze layer;

[0031] The dry granule layer comprises a first dry granule and a second dry granule. The first dry granule comprises the following chemical composition by mass percentage: SiO2: 38%~42%, Al2O3: 20%~24%, CaO: 18%~20%, MgO: 1.5%~2%, K2O: 3%~4.5%, Na2O: 0.2%~1%, ZnO: 8%~10%, BaO: 1%~2.5%, B2O3: 1%~2.5%, and loss on ignition: 0.5%~2%.

[0032] The second dry granules comprise the following chemical composition by mass percentage: SiO2: 40%~50%, Al2O3: 10%~20%, CaO: 18%~20%, MgO: 1.5%~2%, K2O: 3%~4.5%, Na2O: 0.2%~1%, ZnO: 8%~10%, BaO: 1%~2.5%, B2O3: 1%~2.5%, and loss on ignition: 0.5%~2%.

[0033] The protective glaze layer is prepared by means of a protective glaze, and the protective glaze comprises the following raw materials in parts by weight: 18 to 20 parts of calcined kaolin, 30 to 45 parts of low-temperature transparent frit, 3 to 7 parts of wear-resistant reinforcing agent, 0.1 to 0.3 parts of dispersant, and 0.1 to 1 part of defoamer.

[0034] The above scheme modifies the composition ratio of the first and second dry granules, resulting in a matte finish for the first granules and a glossy finish for the second. After firing, this creates a dual-tone glossy / matte effect on the ceramic tile surface. The high Al2O3 content in the first dry granules significantly increases the glaze's melting temperature and high-temperature viscosity, inhibits melt flow, and facilitates the formation of microcrystalline structures during cooling, thus reducing surface gloss. The lower Al2O3 content in the second dry granules significantly increases the silicon-to-aluminum ratio, making it easier to melt and promoting vitrification. This results in a higher gloss level than the first dry granules, achieving a simultaneous glossy / matte effect.

[0035] In one embodiment, the initial melting temperature of the first dry granules is 1100℃~1140℃, the initial melting temperature of the second dry granules is 1000℃~1140℃, and the initial melting temperature of the low-temperature transparent frit is 900℃~1000℃. This invention, by optimizing raw materials and selecting a transparent protective glaze, does not affect the gloss / matte effect. Furthermore, the pre-melting of the low-temperature transparent frit and its downward penetration and filling between the first and second dry granules contribute to obtaining a dense ceramic tile surface.

[0036] In one embodiment, the particle size of the first dry granules is 80-100 mesh.

[0037] In one embodiment, the particle size of the second dry granules is 100-300 mesh.

[0038] In one embodiment, the low-temperature transparent frit comprises the following chemical composition by mass percentage: SiO2: 45%~55%, Al2O3: 5%~10%, B2O3: 17%~22%, Y2O3: 1%~3%, CaO: 1%~3%, K2O: 2%~4%, Na2O: 1%~3%, ZnO: 1%~5%, and loss on ignition: 0.5%~2%.

[0039] In one embodiment, the wear-resistant reinforcing agent is prepared by mixing diamond micro powder and silicon micro powder evenly, dispersing them in an alcohol solution of silane coupling agent, ultrasonically dispersing them, then heating them to 65℃~70℃, stirring them at a speed of 50r / min~100r / min for 20min~60min, and then centrifuging, washing and drying them to obtain the wear-resistant reinforcing agent.

[0040] In one embodiment, the ratio of the diamond micro powder, silicon micro powder, and silane coupling agent alcohol solution by weight is (4~7):(3~6):(10~25).

[0041] In one embodiment, the conditions for ultrasonic dispersion are: power of 100W~200W, frequency of 20kHz~50kHz, and time of 5min~20min.

[0042] In one embodiment, the alcohol solution of the silane coupling agent is obtained by mixing γ-glycidoxypropyltrimethoxysilane, tridecafluorooctyltriethoxysilane, ethanol and water in a weight ratio of (10~15):(7~12):(20~40):(10~30).

[0043] In one embodiment, the drying process is carried out at a temperature of 65°C to 90°C.

[0044] In one embodiment, the dispersant is at least one of sodium tripolyphosphate, sodium carboxymethyl cellulose, and sodium hexametaphosphate.

[0045] In one embodiment, the defoamer is polymethylsiloxane.

[0046] In one embodiment, the protective glaze is prepared by mixing calcined kaolin, low-temperature transparent frit, wear-resistant reinforcing agent, dispersant and defoamer, adding water and performing wet ball milling, and passing through a 320-340 mesh sieve to obtain the protective glaze.

[0047] In one embodiment, the protective glaze comprises the following raw materials in parts by weight: 18 to 20 parts calcined kaolin, 30 to 45 parts low-temperature transparent frit, 3 to 7 parts wear-resistant reinforcing agent, 0.1 to 0.3 parts dispersant, 0.1 to 1 part defoamer, and 20 to 50 parts water.

[0048] In one embodiment, the wet ball milling speed is 50 r / min to 100 r / min, and the time is 3 h to 6 h.

[0049] In one embodiment, the specific gravity of the protective glaze is 1.62 g / cm³. 3 ~1.70 g / cm 3 .

[0050] In one embodiment, the application rate of the protective glaze is 250 g / m². 2 ~500g / m 2 .

[0051] In addition, the present invention also provides a method for preparing a dual-positioning ceramic tile with a glossy-matte effect, the method comprising the following steps:

[0052] S1. Apply a base glaze to the body layer, and form a base glaze layer after drying;

[0053] S2. Inkjet printing is performed on the base glaze layer to form a pattern layer;

[0054] S3. Apply the first dry granules using a dry granule spreading device to form a pre-lay layer for the first dry granule positioning area, and apply the second dry granules using the same device to form a pre-lay layer for the second dry granule positioning area, thus forming a dry granule layer;

[0055] S4. Apply a protective glaze evenly to the dry granule layer, and dry it to form a protective glaze layer;

[0056] S5. Heat to 950℃~1100℃ at a heating rate of 5℃ / min~8℃ / min, hold for 10min~20min, then heat to 1150℃~1210℃ at a heating rate of 1℃ / min~3℃ / min, and fire for 40min~60min to obtain a dual-positioning ceramic tile with a glossy and matte finish.

[0057] In one embodiment, the application rate of the first dry granules is 200 g / m³. 2 ~300g / m 2 .

[0058] In one embodiment, the application rate of the second dry granules is 100 g / m³. 2 ~200g / m 2 .

[0059] In one embodiment, in step S4, the drying process is carried out at a temperature of 100°C to 120°C for a time of 10 min to 20 min.

[0060] The embodiments of the present invention will be described in detail below with reference to specific examples. The body layer, base glaze layer, and pattern layer, which are not specifically defined below, can be understood as conventional technical means and will not be elaborated upon here. Example 1:

[0061] A method for preparing a dual-positioning ceramic tile with a glossy / matte finish, the method comprising the following steps:

[0062] S1. Apply a base glaze to the body layer, and form a base glaze layer after drying;

[0063] S2. Inkjet printing is performed on the base glaze layer to form a pattern layer;

[0064] S3. Use dry-grain fabric equipment with a density of 250g / m². 2 The first dry granules are applied at a certain rate to form a pre-lay layer for the first dry granule positioning area, and a dry granule spreading device is used to apply the material at a rate of 150g / m². 2 The second dry granules are applied in the same amount to form a pre-lay layer in the second dry granule positioning area, thus forming a dry granule layer.

[0065] The first dry granules comprise the following chemical composition by mass percentage: SiO2: 38.5%, Al2O3: 23.5%, CaO: 18.5%, MgO: 2%, K2O: 3%, Na2O: 1%, ZnO: 9.5%, BaO: 2.5%, B2O3: 1%, and loss on ignition: 0.5%; the initial melting temperature of the first dry granules is 1140℃; and the particle size of the first dry granules is 100 mesh.

[0066] The second dry granules comprise the following chemical composition by mass percentage: SiO2: 48.5%, Al2O3: 12.5%, CaO: 19.5%, MgO: 1.5%, K2O: 3%, Na2O: 0.5%, ZnO: 9.5%, BaO: 2.0%, B2O3: 2.5%, and loss on ignition: 0.5%; the initial melting temperature of the second dry granules is 1120℃; the particle size of the second dry granules is 250 mesh.

[0067] S4. At 350g / m 2 The amount of protective glaze applied is uniformly applied to the dry granule layer, and then dried at 100°C for 25 minutes to form a protective glaze layer.

[0068] The protective glaze is prepared as follows: 18 parts by weight of calcined kaolin, 38 parts by weight of low-temperature transparent frit, 5 parts by weight of wear-resistant reinforcing agent, 0.3 parts by weight of sodium tripolyphosphate, and 0.5 parts by weight of polymethylsiloxane are mixed, 30 parts by weight of water are added, and the mixture is wet-milled at 50 r / min for 5 hours. The mixture is then passed through a 325-mesh sieve to obtain a specific gravity of 1.64 g / cm³. 3 The protective glaze;

[0069] The low-temperature transparent frit comprises the following chemical composition by mass percentage: SiO2: 52.5%, Al2O3: 9.5%, B2O3: 22%, Y2O3: 3%, CaO: 3%, K2O: 3%, Na2O: 2.5%, ZnO: 4%, and loss on ignition: 0.5%; the initial melting temperature of the low-temperature transparent frit is 900℃.

[0070] The preparation method of the wear-resistant reinforcing agent is as follows: 7 parts by weight of diamond micro powder and 3 parts by weight of silicon micro powder are mixed evenly and dispersed in an alcohol solution of 20 parts by weight of silane coupling agent (obtained by mixing γ-glycidoxypropyltrimethoxysilane, tridecafluorooctyltriethoxysilane, ethanol and water in a weight ratio of 13:12:20:20). The mixture is ultrasonically dispersed for 15 min at a power of 100 W and a frequency of 25 kHz, then heated to 65 °C and stirred at a speed of 50 r / min for 30 min. After centrifugation, washing, and drying at 85 °C, the wear-resistant reinforcing agent is obtained.

[0071] S5. Heat to 1000℃ at a heating rate of 6℃ / min, hold for 20min, then heat to 1200℃ at a heating rate of 3℃ / min and fire for 60min to obtain a dual-positioning ceramic tile with a glossy and matte finish. Example 2:

[0072] A method for preparing a dual-positioning ceramic tile with a glossy / matte finish, the method comprising the following steps:

[0073] S1. Apply a base glaze to the body layer, and form a base glaze layer after drying;

[0074] S2. Inkjet printing is performed on the base glaze layer to form a pattern layer;

[0075] S3. Use dry-grain fabric equipment with a density of 280g / m 2 The first dry granules are applied at a certain rate to form a pre-lay layer for the first dry granule positioning area, and a dry granule spreading device is used to apply the material at a rate of 200g / m². 2 The second dry granules are applied in the same amount to form a pre-lay layer in the second dry granule positioning area, thus forming a dry granule layer.

[0076] The first dry granules comprise the following chemical composition by mass percentage: SiO2: 38.5%, Al2O3: 23.5%, CaO: 18.5%, MgO: 2%, K2O: 3%, Na2O: 1%, ZnO: 9.5%, BaO: 2.5%, B2O3: 1%, and loss on ignition: 0.5%; the initial melting temperature of the first dry granules is 1140℃; and the particle size of the first dry granules is 100 mesh.

[0077] The second dry granules comprise the following chemical composition by mass percentage: SiO2: 48.5%, Al2O3: 12.5%, CaO: 19.5%, MgO: 1.5%, K2O: 3%, Na2O: 0.5%, ZnO: 9.5%, BaO: 2.0%, B2O3: 2.5%, and loss on ignition: 0.5%; the initial melting temperature of the second dry granules is 1120℃; the particle size of the second dry granules is 250 mesh.

[0078] S4. At 350g / m 2 The amount of protective glaze applied is uniformly applied to the dry granule layer, and then dried at 100°C for 25 minutes to form a protective glaze layer.

[0079] The protective glaze is prepared as follows: 20 parts by weight of calcined kaolin, 40 parts by weight of low-temperature transparent frit, 6 parts by weight of wear-resistant reinforcing agent, 0.3 parts by weight of sodium tripolyphosphate, and 0.6 parts by weight of polymethylsiloxane are mixed, 30 parts by weight of water are added, and the mixture is wet-milled at 50 r / min for 6 hours. The mixture is then passed through a 325-mesh sieve to obtain a specific gravity of 1.66 g / cm³. 3 The protective glaze;

[0080] The low-temperature transparent frit comprises the following chemical composition by mass percentage: SiO2: 54%, Al2O3: 9%, B2O3: 22%, Y2O3: 3%, CaO: 2.5%, K2O: 3%, Na2O: 2.5%, ZnO: 3.5%, and loss on ignition: 0.5%; the initial melting temperature of the low-temperature transparent frit is 950℃.

[0081] The preparation method of the wear-resistant reinforcing agent is as follows: 7 parts by weight of diamond micro powder and 3 parts by weight of silicon micro powder are mixed evenly and dispersed in an alcohol solution of 20 parts by weight of silane coupling agent (obtained by mixing γ-glycidoxypropyltrimethoxysilane, tridecafluorooctyltriethoxysilane, ethanol and water in a weight ratio of 13:12:20:20). The mixture is ultrasonically dispersed for 20 min at a power of 100 W and a frequency of 25 kHz, then heated to 70 °C and stirred at a speed of 50 r / min for 25 min. After centrifugation, washing, and drying at 85 °C, the wear-resistant reinforcing agent is obtained.

[0082] S5. Heat to 1000℃ at a heating rate of 7℃ / min, hold for 20min, then heat to 1200℃ at a heating rate of 3℃ / min and fire for 60min to obtain a dual-positioning ceramic tile with a glossy and matte finish. Example 3:

[0083] A method for preparing a dual-positioning ceramic tile with a glossy / matte finish, the method comprising the following steps:

[0084] S1. Apply a base glaze to the body layer, and form a base glaze layer after drying;

[0085] S2. Inkjet printing is performed on the base glaze layer to form a pattern layer;

[0086] S3. Use dry-grain fabric equipment with a density of 250g / m². 2 The first dry granules are applied at a certain rate to form a pre-lay layer for the first dry granule positioning area, and a dry granule spreading device is used to apply the material at a rate of 150g / m². 2The second dry granules are applied in the same amount to form a pre-lay layer in the second dry granule positioning area, thus forming a dry granule layer.

[0087] The first dry granules comprise the following chemical composition by mass percentage: SiO2: 38.5%, Al2O3: 23.5%, CaO: 18.5%, MgO: 2%, K2O: 3%, Na2O: 1%, ZnO: 9.5%, BaO: 2.5%, B2O3: 1%, and loss on ignition: 0.5%; the initial melting temperature of the first dry granules is 1140℃; and the particle size of the first dry granules is 100 mesh.

[0088] The second dry granules comprise the following chemical composition by mass percentage: SiO2: 48.5%, Al2O3: 12.5%, CaO: 19.5%, MgO: 1.5%, K2O: 3%, Na2O: 0.5%, ZnO: 9.5%, BaO: 2.0%, B2O3: 2.5%, and loss on ignition: 0.5%; the initial melting temperature of the second dry granules is 1120℃; the particle size of the second dry granules is 250 mesh.

[0089] S4. At 350g / m 2 The amount of protective glaze applied is uniformly applied to the dry granule layer, and then dried at 100°C for 25 minutes to form a protective glaze layer.

[0090] The protective glaze is prepared as follows: 19 parts by weight of calcined kaolin, 38 parts by weight of low-temperature transparent frit, 7 parts by weight of wear-resistant reinforcing agent, 0.3 parts by weight of sodium tripolyphosphate, and 0.6 parts by weight of polymethylsiloxane are mixed, 30 parts by weight of water are added, and the mixture is wet-milled at 50 r / min for 6 hours. The mixture is then passed through a 325-mesh sieve to obtain a specific gravity of 1.65 g / cm³. 3 The protective glaze;

[0091] The low-temperature transparent frit comprises the following chemical composition by mass percentage: SiO2: 54%, Al2O3: 9.5%, B2O3: 21.5%, Y2O3: 3%, CaO: 2.5%, K2O: 3.5%, Na2O: 2%, ZnO: 3.5%, and loss on ignition: 0.5%; the initial melting temperature of the low-temperature transparent frit is 950℃.

[0092] The preparation method of the wear-resistant reinforcing agent is as follows: 6 parts by weight of diamond micro powder and 4 parts by weight of silicon micro powder are mixed evenly and dispersed in an alcohol solution of 20 parts by weight of silane coupling agent (obtained by mixing γ-glycidoxypropyltrimethoxysilane, tridecafluorooctyltriethoxysilane, ethanol and water in a weight ratio of 13:12:20:20). The mixture is ultrasonically dispersed for 20 min at a power of 100 W and a frequency of 25 kHz, then heated to 70 °C and stirred at a speed of 50 r / min for 25 min. After centrifugation, washing, and drying at 70 °C, the wear-resistant reinforcing agent is obtained.

[0093] S5. Heat to 1000℃ at a heating rate of 8℃ / min, hold for 20min, then heat to 1200℃ at a heating rate of 3℃ / min and fire for 60min to obtain a dual-positioning ceramic tile with a glossy and matte finish.

[0094] Comparative Example 1:

[0095] The difference between Comparative Example 1 and Example 3 is that no first dry granules were added in Comparative Example 1, but otherwise the same as in Example 3.

[0096] Comparative Example 2:

[0097] The difference between Comparative Example 3 and Example 3 is that no second dry granules were added in Comparative Example 2, but otherwise the same as in Example 3.

[0098] Comparative Example 3:

[0099] Compared with Example 3, Comparative Example 3 differs in that the protective glaze of Comparative Example 3 uses a high-temperature frit instead of a low-temperature transparent frit, while the rest is the same as Example 3.

[0100] The high-temperature fused inlet in Comparative Example 3 comprises the following components by mass percentage: SiO2: 58.5%, Al2O3: 17.5%, MgO: 1.5%, K2O: 3.6%, Na2O: 6.5%, ZnO: 8.4%, LiO: 3.5%, and loss on ignition: 0.5%. The initial melting temperature of the high-temperature fused inlet is 1150℃.

[0101] Comparative Example 4:

[0102] Compared with Example 3, Comparative Example 4 differs in that the protective glaze of Comparative Example 4 uses the following frit instead of the low-temperature transparent frit, while the rest is the same as Example 3;

[0103] The frit in Comparative Example 4 comprises the following components by mass percentage: SiO2: 57%, Al2O3: 11.5%, K2O: 3.5%, Na2O: 6.5%, ZnO: 8.5%, ZrO2: 8.3%, TiO2: 4.2%, and loss on ignition: 0.5%.

[0104] Comparative Example 5:

[0105] Compared with Example 3, Comparative Example 5 differs in that the wear-resistant reinforcing agent in the protective glaze of Comparative Example 5 is a single diamond micro powder directly added; otherwise, it is the same as Example 3.

[0106] Comparative Example 6:

[0107] The difference between Comparative Example 6 and Example 3 is that no wear-resistant reinforcing agent was added to the protective glaze of Comparative Example 6, while the rest is the same as Example 3.

[0108] Comparative Example 7:

[0109] Compared with Example 3, Comparative Example 7 differs in that the firing process in step S5 of Comparative Example 7 is as follows: the temperature is raised to 1200°C at a heating rate of 10°C / min, and the firing process is carried out for 70 minutes. The rest is the same as in Example 3.

[0110] I. Observe the ceramic tile samples prepared in Examples 1-3 and Comparative Examples 1-7. The apparent glaze effect is observed and recorded by those skilled in the art with the naked eye. If necessary, a magnifying glass can be used as an auxiliary tool. The results are shown in Table 1 below.

[0111] Table 1: Apparent Effects

[0112] Group Texture effects Glazed surface texture Example 1 The texture is clear, the sense of layering is excellent, and the gloss and matte effects are superb. Smooth and delicate Example 2 The texture is clear, the sense of layering is excellent, and the gloss and matte effects are superb. Smooth and delicate Example 3 The texture is clear, the sense of layering is excellent, and the gloss and matte effects are superb. Smooth and delicate Comparative Example 1 The texture lacks depth and dimension, and doesn't have a glossy / matte finish. Smooth and delicate Comparative Example 2 The texture lacks depth and dimension, and doesn't have a glossy / matte finish. Smooth and delicate Comparative Example 3 The texture is blurry, lacks depth, and has poor gloss and matte finish. Rough surface, slight pinholes Comparative Example 4 The glaze is milky white with poor transparency and a poor matte finish. Powdery and rough surface Comparative Example 5 The texture is partially blurry, lacks depth, and the gloss / matte effect is mediocre. Rough surface, slight pinholes Comparative Example 6 The texture is clear, the sense of layering is excellent, and the gloss and matte effects are superb. Smooth and delicate Comparative Example 7 The texture is blurry, lacks depth, and has poor gloss and matte finish. Obvious pinholes with localized wavy patterns

[0113] As shown in Table 1, this invention, through optimized composition, can obtain ceramic tiles with clear texture, excellent layering, and superior gloss / matte effects. The addition of low-temperature transparent frit protects the dual-positioning effect of gloss and matte, reduces surface defects, and yields a smooth and delicate ceramic glaze. Compared to Example 3, Comparative Examples 1 and 2 both used single dry granules, lacking the dual-positioning effect and failing to achieve the gloss / matte effect, resulting in poor artistic quality. Comparative Example 3 used high-temperature frit, whose melting behavior was synchronous with or even delayed compared to the dry granules, failing to play the role of first filling to increase the density of the glaze. This caused the first and second dry granules to interfere with each other during the melting process, resulting in blurred boundaries between the gloss and matte effects. The frit used in Comparative Example 4 contained a high content of ZrO2 and TiO2, exhibiting a strong opacifier effect, affecting the transparency of the protective glaze and consequently impacting the overall quality of the ceramic tile. The effects of the materials are as follows: In Comparative Example 5, unmodified diamond micropowder was directly added. Due to its high surface energy and hydrophobicity, it tends to agglomerate in the glaze slurry, resulting in microscopic unevenness and poor uniformity of the glaze surface after firing, which in turn affects the overall glaze effect. In Comparative Example 6, no wear-resistant reinforcing agent was added, so the effect on the glaze was not significant in the short term. In Comparative Example 7, the firing process was different, and the components were subjected to high temperature at the same time. The frit could not be fully filled and vented, resulting in defects such as pinholes and wavy patterns. This shows that the optimized firing process of this application is more conducive to obtaining ceramic tiles with clear texture, excellent layering, and excellent gloss and matte effects.

[0114] 2. The ceramic tile samples prepared in Examples 1 to 3 and the ceramic tile samples prepared in Comparative Examples 1 to 7 were subjected to performance tests. The size was 100mm × 100mm. The wear resistance was tested according to GB / T3810.7-2016, and the stain resistance was tested according to GB / T3810.14-2016. The results are shown in Table 2.

[0115] Table 2: Performance Test Results

[0116] Group Wear amount (g / 6000 rpm) antifouling level Example 1 0.05 Level 5 Example 2 0.06 Level 5 Example 3 0.05 Level 5 Comparative Example 1 0.08 Level 5 Comparative Example 2 0.07 Level 5 Comparative Example 3 0.15 Level 3 Comparative Example 4 0.11 Level 4 Comparative Example 5 0.14 Level 3 Comparative Example 6 0.46 Level 3 Comparative Example 7 0.59 Level 2

[0117] Analysis of the data in Table 2 shows that the ceramic tile of the present invention, while ensuring its glossy / matte effect, also possesses excellent wear resistance and stain resistance. Compared with Example 3, Comparative Examples 1 and 2 both used single dry granules, and their wear resistance and stain resistance levels were comparable to Example 3, indicating that the first and second dry granules mainly affect the glossy / matte effect. Comparative Example 3 used a high-temperature frit, which had a less filling effect than Example 3, resulting in lower glaze density, the presence of micropores and weak interfaces, thus affecting wear resistance and stain resistance. Comparative Example 4 used a different frit; the frit containing ZrO2 and TiO2 had an opaque effect, and its microstructure contained a large number of crystalline and glassy phase interfaces, resulting in reduced fracture toughness and lower wear resistance and stain resistance than Example 3. Comparative Example 5 directly... The addition of diamond powder without modification resulted in agglomeration, which not only affected the glaze effect and caused pinholes, but also led to poorer wear resistance and stain resistance compared to Example 3. Comparative Example 6 did not add wear-resistant enhancers. Although the glaze also had a certain wear resistance, it relied entirely on the hardness of the frit and dry particles themselves, which was far lower than the hardness of diamond. This resulted in significantly worse wear resistance than Example 3, and the poor wear resistance made it easy to get scratched. The stain resistance was also not as good as Example 3. The different firing process in Comparative Example 7 resulted in poor glaze quality, with pinholes, bubbles, and microcracks. These defects were prone to propagation during wear, resulting in poor overall performance.

[0118] The embodiments provided by the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A dual-positioning ceramic tile with a glossy / matte finish, characterized in that, The dual-positioning ceramic tile comprises, from bottom to top, a body layer, a base glaze layer, a pattern layer, a dry granule layer, and a protective glaze layer; The dry granule layer comprises a first dry granule and a second dry granule. The initial melting temperature of the first dry granule is 1100℃~1140℃. The first dry granule comprises the following chemical composition by mass percentage: SiO2: 38%~42%, Al2O3: 20%~24%, CaO: 18%~20%, MgO: 1.5%~2%, K2O: 3%~4.5%, Na2O: 0.2%~1%, ZnO: 8%~10%, BaO: 1%~2.5%, B2O3: 1%~2.5%, and loss on ignition: 0.5%~2%. The second dry granules have an initial melting temperature of 1000℃~1140℃ and contain the following chemical composition by mass percentage: SiO2: 40%~50%, Al2O3: 10%~20%, CaO: 18%~20%, MgO: 1.5%~2%, K2O: 3%~4.5%, Na2O: 0.2%~1%, ZnO: 8%~10%, BaO: 1%~2.5%, B2O3: 1%~2.5%, and loss on ignition: 0.5%~2%. The protective glaze layer is prepared by means of a protective glaze, and the protective glaze comprises the following raw materials in parts by weight: 18-20 parts of calcined kaolin, 30-45 parts of low-temperature transparent frit, 3-7 parts of wear-resistant reinforcing agent, 0.1-0.3 parts of dispersant, and 0.1-1 parts of defoamer; the initial melting temperature of the low-temperature transparent frit is 900℃-1000℃; The low-temperature transparent frit comprises the following chemical composition by mass percentage: SiO2: 45%~55%, Al2O3: 5%~10%, B2O3: 17%~22%, Y2O3: 1%~3%, CaO: 1%~3%, K2O: 2%~4%, Na2O: 1%~3%, ZnO: 1%~5%, and loss on ignition: 0.5%~2%. The preparation method of the wear-resistant reinforcing agent is as follows: diamond micro powder and silicon micro powder are mixed evenly and dispersed in an alcohol solution of silane coupling agent. The mixture is ultrasonically dispersed, then heated to 65℃~70℃ and stirred at a speed of 50r / min~100r / min for 20min~60min. After centrifugation, washing and drying, the wear-resistant reinforcing agent is obtained. The method for preparing the dual-positioning ceramic tile with a glossy / matte effect includes the following steps: S1. Apply a base glaze to the body layer, and form a base glaze layer after drying; S2. Inkjet printing is performed on the base glaze layer to form a pattern layer; S3. Apply the first dry granules using a dry granule spreading device to form a pre-lay layer for the first dry granule positioning area, and apply the second dry granules using the same device to form a pre-lay layer for the second dry granule positioning area, thus forming a dry granule layer; wherein the initial melting temperature of the first dry granules is 1100℃~1140℃; and the initial melting temperature of the second dry granules is 1000℃~1140℃. S4. Apply a protective glaze evenly to the dry granule layer and dry it to form a protective glaze layer, wherein the protective glaze contains a low-temperature transparent frit with an initial melting temperature of 900℃~1000℃; S5. Heat to 950℃~1100℃ at a heating rate of 5℃ / min~8℃ / min, hold for 10min~20min, then heat to 1150℃~1210℃ at a heating rate of 1℃ / min~3℃ / min, and fire for 40min~60min to obtain a dual-positioning ceramic tile with a glossy and matte finish.

2. The dual-positioning ceramic tile according to claim 1, characterized in that, The ratio of the diamond micro powder, silicon micro powder, and silane coupling agent in the alcohol solution by weight is (4~7):(3~6):(10~25).

3. The dual-positioning ceramic tile according to claim 1, characterized in that, The conditions for ultrasonic dispersion are: power of 100W~200W, frequency of 20kHz~50kHz, and time of 5min~20min.

4. The dual-positioning ceramic tile according to claim 1, characterized in that, The alcohol solution of the silane coupling agent is prepared by mixing γ-glycidoxypropyltrimethoxysilane, tridecafluorooctyltriethoxysilane, ethanol and water in a weight ratio of (10~15):(7~12):(20~40):(10~30).

5. The dual-positioning ceramic tile according to claim 1, characterized in that, The dispersant is at least one of sodium tripolyphosphate, sodium carboxymethyl cellulose, and sodium hexametaphosphate.

6. The dual-positioning ceramic tile according to claim 1, characterized in that, The protective glaze is prepared by mixing calcined kaolin, low-temperature transparent frit, wear-resistant reinforcing agent, dispersant and defoamer, adding water and performing wet ball milling, and passing through a 320-340 mesh sieve to obtain the protective glaze.

7. A method for preparing a dual-positioning ceramic tile with a glossy / matte finish, characterized in that, The preparation method is used to prepare dual-positioning ceramic tiles with a glossy / matte effect as described in any one of claims 1 to 6, and the preparation method includes the following steps: S1. Apply a base glaze to the body layer, and form a base glaze layer after drying; S2. Inkjet printing is performed on the base glaze layer to form a pattern layer; S3. Apply the first dry granules using a dry granule spreading device to form a pre-lay layer for the first dry granule positioning area, and apply the second dry granules using the same device to form a pre-lay layer for the second dry granule positioning area, thus forming a dry granule layer; wherein the initial melting temperature of the first dry granules is 1100℃~1140℃; and the initial melting temperature of the second dry granules is 1000℃~1140℃. S4. Apply a protective glaze evenly to the dry granule layer and dry it to form a protective glaze layer, wherein the protective glaze contains a low-temperature transparent frit with an initial melting temperature of 900℃~1000℃; S5. Heat to 950℃~1100℃ at a heating rate of 5℃ / min~8℃ / min, hold for 10min~20min, then heat to 1150℃~1210℃ at a heating rate of 1℃ / min~3℃ / min, and fire for 40min~60min to obtain a dual-positioning ceramic tile with a glossy and matte finish.