An artificial marble tile facilitating deep reprocessing and its production process

Abstract

The present application relates to the technical field of ceramic tiles, specifically disclosing a marble-like ceramic tile that is easy to deeply reprocess and its production process. The marble-like ceramic tile includes a base and a glaze coated on the base. The base includes the following raw materials in parts by weight: 20-40 parts kaolin, 5-15 parts dolomite, 10-20 parts quartz, 10-20 parts talc, 10-15 parts bentonite, 3-8 parts mixed reinforcing material, and 8-12 parts composite. The production process is as follows: the raw materials for the base are mixed, crushed, sieved, pressed into shape, and dried to obtain the base; the raw materials for the glaze are mixed, crushed, and sieved to obtain the glaze; the glaze is evenly applied to the base, dried, calcined, cooled, and polished to obtain the marble-like ceramic tile. The marble-like ceramic tile of the present application has the advantage of improving the hardness of the ceramic tile through the synergistic effect between the raw materials.

Description

Technical Field

[0001] The present application relates to the technical field of ceramic tiles, and in particular to a marble-like ceramic tile that is easy to deeply reprocess and a production process thereof. Background Art

[0002] Ceramic tiles are a kind of acid and alkali resistant porcelain or stone building decoration material made of refractory metal oxides and semi-metal oxides through grinding, mixing, pressing, glazing, sintering and other processes. Imitation marble tiles are a type of ceramic tiles.

[0003] Imitation marble tiles are designed based on natural stone, extracting the original colors and patterns of various rare natural stones. Using high-definition scanning, high-definition inkjet printing, and leading-edge fabrication technology, they achieve a natural, beautiful, rich, and authentic pattern. Imitation marble tiles closely resemble the texture and function of natural stone strata in color, texture, and function, offering a more transparent texture, unlike the rough patterns of ordinary glazed tiles. This has earned them a wide favor among homeowners.

[0004] At present, although imitation marble tiles are widely used, they are not easy to process deeply due to their poor hardness during the processing, and are easily damaged, which affects their use. Summary of the Invention

[0005] In order to improve the hardness of imitation marble tiles and facilitate deep processing, the present application provides an imitation marble tile that is easy to deep reprocess and a production process thereof.

[0006] In the first aspect, the present application provides an imitation marble tile that is easy to deeply reprocess, adopting the following technical solution: an imitation marble tile that is easy to deeply reprocess, comprising a blank and a glaze coated on the blank, the blank comprising the following raw materials in parts by weight: 20-40 parts of kaolin, 5-15 parts of dolomite, 10-20 parts of quartz stone, 10-20 parts of talc powder, 10-15 parts of bentonite, 3-8 parts of mixed reinforcing material, and 8-12 parts of a composite; wherein the composite is a compound of calcium carbonate microspheres and ultrafine silicon carbide.

[0007] By adopting the above technical solution, the imitation marble tiles of the present application, through the synergistic effect between the various raw materials, not only maintain good destructive strength and rupture modulus of the tiles, but also improve the hardness of the tiles, among which the destructive strength is 1950-1970N, the Mohs hardness grade is 4-5, and the rupture modulus is 64.5-65.5MPa.

[0008] Ceramic tiles are made from a base material and a glaze applied to the base material. The base material primarily contributes to the tile's hardness. Specifically, kaolin, with its low water content, high aluminum content, and high specific surface area, can fill the gaps between the base materials, increasing the base's strength and hardness, thereby enhancing the tile's hardness. Dolomite is low-cost, weather-resistant, and can also lower firing temperatures. Quartz enhances the base's mechanical strength and regulates its plasticity. As a lean material, it reduces shrinkage, shortens drying time, and minimizes deformation, thereby improving crack resistance. Talc thickens, enhances viscosity, and retains moisture. Its fine molecular weight allows it to fill the gaps between the materials, enhancing the base's strength. The addition of bentonite increases the base's plasticity and strength, significantly enhancing its lubrication and facilitating ball milling. Bentonite is fine, impact-resistant, and possesses a certain mechanical strength, which can enhance the hardness of the tile. The mixed reinforcing material has good dispersibility and strong fluidity. When added to the green body, under the high temperature during the processing, the long molecular chains can entangle with each other, better bonding the raw materials together and preventing displacement under stress conditions, thereby enhancing the hardness of the tile.

[0009] The composite is a combination of calcium carbonate microspheres and ultrafine silicon carbide. The calcium carbonate microspheres have load-bearing properties and are formed by loading ultrafine silicon carbide. First, the main component of calcium carbonate microspheres is calcite, which has excellent heat resistance, chemical resistance, and stability. When used in the raw materials of the green body, they can be filled between the raw materials to improve the strength, hardness, and impact resistance of the green body, thereby improving the strength and hardness of the tile. Ultrafine silicon carbide has high hardness, good thermal stability, good wear resistance, and good chemical corrosion resistance. When added to the raw materials of the green body, it can improve the hardness of the green body. However, ultrafine silicon carbide has a large specific surface energy, is prone to self-agglomeration, and has poor dispersion. The synergistic effect of calcium carbonate microspheres and ultrafine silicon carbide can make the ultrafine silicon carbide more evenly dispersed, allowing it to fully play its role, thereby better improving the hardness of the tile and facilitating deep processing of the tile.

[0010] Preferably, the composite is prepared by the following method: calcium carbonate microspheres and ultrafine silicon carbide are placed in anhydrous ethanol, heated and stirred while vacuuming for a period of time, centrifuged, filtered, and dried to obtain the composite.

[0011] Furthermore, the composite is prepared by the following method: calcium carbonate microspheres and ultrafine silicon carbide are placed in anhydrous ethanol, heated to 80-120°C, stirred at a speed of 350-450 r / min, and vacuumed while stirring until the pressure reaches 0.1 MPa, for 50-70 minutes, centrifuged, filtered, and dried to obtain the composite;

[0012] The amount of anhydrous ethanol added to each 1g of calcium carbonate microspheres is 2-4ml.

[0013] By adopting the above technical solution and utilizing the above preparation method to prepare the composite, the ultrafine silicon carbide can be better loaded on the calcium carbonate microspheres, which facilitates the preparation of the composite, enables it to better play its role, and facilitates improving the hardness of the ceramic tile.

[0014] Preferably, the weight ratio of the calcium carbonate microspheres to the ultrafine silicon carbide is 1:(2-4).

[0015] If the amount of ultrafine silicon carbide added is too little, the reinforcing effect of the composite will be reduced, and the strength of the tile will not be improved. If the amount of ultrafine silicon carbide added is too much, the ultrafine silicon carbide will completely coat the calcium carbonate microspheres. Due to the large specific surface area of ultrafine silicon carbide, the coated calcium carbonate microspheres will eventually be unevenly dispersed, thereby affecting the strength of the tile. By adopting the above technical solution, when the amount of calcium carbonate microspheres and ultrafine silicon carbide added is within the above range, the ultrafine silicon carbide can be better loaded on the calcium carbonate microspheres, allowing the two to better exert a synergistic effect and improve the hardness of the tile.

[0016] Preferably, the calcium carbonate microspheres are prepared by the following method:

[0017] A1: Add a portion of the polyacrylic acid solution to the sodium carbonate solution, mix well, then add sodium lauryl sulfate, mix well, and heat in a water bath to obtain a mixture A;

[0018] A2: Add another portion of the polyacrylic acid solution to the calcium chloride solution and mix well to obtain mixture B;

[0019] A3: Mix mixture A and mixture B, heat in a water bath, stir while heating, react for a period of time, then filter, wash, and dry to obtain calcium carbonate microspheres.

[0020] Furthermore, the calcium carbonate microspheres are prepared by the following method:

[0021] A1: Add a portion of the polyacrylic acid solution to the sodium carbonate solution, mix well, then add sodium lauryl sulfate, mix well, and maintain in a water bath at 70-90°C for 0.4-0.6 hours to obtain a mixture A;

[0022] A2: Add another portion of the polyacrylic acid solution to the calcium chloride solution and mix well to obtain mixture B;

[0023] A3: Mix mixture A and mixture B, heat in a water bath at 80-100°C while stirring at 180-220 rpm for 0.8-1.5 h, then filter, wash with water 3-5 times, and dry to obtain calcium carbonate microspheres;

[0024] The volume ratio of the polyacrylic acid solution to the sodium carbonate solution is 1:(3-5), the volume ratio of the polyacrylic acid solution to the calcium chloride solution is 1:(3-5), the added amount of sodium dodecyl sulfate per 1 ml of the polyacrylic acid solution is 4-6 g, the concentration of the polyacrylic acid solution is 1 g / L, the concentration of the sodium carbonate solution is 0.1 mol / L, and the concentration of the calcium chloride solution is 0.1 mol / L.

[0025] By adopting the above technical solution and utilizing the above preparation method, calcium carbonate microspheres are prepared. Sodium dodecyl sulfate is an anionic surfactant and is in the form of micelles in the solution. The hydrophilic group of sodium dodecyl sulfate is a sulfonic acid group, and the hydrophilic group of polyacrylic acid is a carboxylic acid group. The hydrophilicity of polyacrylic acid is better than that of sodium dodecyl sulfate. Therefore, calcium ions easily interact with the carboxylic acid groups, and the electrostatic interaction between the calcium ions and the carboxylic acid groups is greater than the electrostatic interaction between the calcium ions and the sulfonic acid groups. Therefore, the calcium ions will move closer to the polyacrylic acid chains and actively nucleate, which will cause calcium ion concentration and lead to excessively high calcium ion concentration near the chains, thereby forming unstable amorphous calcium carbonate. The sodium dodecyl sulfate micelles in the solution will gradually wrap around the amorphous calcium carbonate under the electrostatic action of the calcium ions, thereby forming calcium carbonate microspheres.

[0026] Preferably, the ultrafine silicon carbide is pretreated before use by the following method: placing the ultrafine silicon carbide in an ethanol solution, adding a silane coupling agent, mixing evenly, filtering, washing, and drying to obtain pretreated ultrafine silicon carbide.

[0027] Furthermore, the ultrafine silicon carbide is pretreated by the following method before use: placing the ultrafine silicon carbide in an ethanol solution, adding a silane coupling agent, mixing evenly, filtering, washing with water 3-5 times, and drying to obtain pretreated ultrafine silicon carbide;

[0028] The amount of ethanol solution added to each 1g of ultrafine silicon carbide is 3-5ml, the mass fraction of the ethanol solution is 60%, and the weight ratio of ultrafine silicon carbide to silane coupling agent is 1:(0.4-0.6).

[0029] By adopting the above technical solution, the specific surface energy of the surface of ultrafine silicon carbide is large, and it is easy to agglomerate itself, resulting in uneven dispersion. Pre-treating it with a silane coupling agent can reduce the specific surface energy of the ultrafine silicon carbide, making it more evenly dispersed, making it easier for the ultrafine silicon carbide to play a role, thereby further improving the hardness of the ceramic tile.

[0030] Preferably, the mixed reinforcing material is a mixture of aluminum oxide, calcium lignin sulfonate, ethyl acrylate, and sodium humate, and the weight ratio of aluminum oxide, calcium lignin sulfonate, ethyl acrylate, and sodium humate is 1:1:1:1.

[0031] By adopting the above technical solution, alumina has high hardness and a high melting point, which can improve the hardness and strength of ceramic tiles. Furthermore, the fine particles of alumina can fill the pores of ceramic tiles, increasing the density of the tiles and thus improving the hardness of the tiles. Calcium lignin sulfonate is an anionic surfactant with high dispersibility and adhesion. It can reduce the carbon content in the ceramic tile body, improve the fluidity and sintering speed of the body, and thus increase the hardness of the body. Ethyl acrylate is an adhesive with high impact resistance, which can improve the hardness of the ceramic tile. Sodium humate has ion exchange, adsorption, and complexing properties, as well as excellent permeability and dispersibility. It can effectively disperse metal oxides and form a chemically stable protective film on the metal surface. This can increase the plasticity, fluidity, and suspension of the ceramic tile paste. It can also increase the dryness of the body and enhance the adhesion between the body and the glaze, thereby improving the hardness of the ceramic tile. Through the synergistic effect of the various raw materials, the hardness of the body can be increased, thereby improving the hardness of the ceramic tile and facilitating further processing.

[0032] Preferably, the glaze comprises the following raw materials in parts by weight: 20-30 parts of potassium feldspar, 10-15 parts of sodium feldspar, 5-10 parts of nano zinc oxide, 5-10 parts of nano silicon dioxide, 1-3 parts of sodium hexametaphosphate, and 4-8 parts of corundum powder.

[0033] By adopting the above technical solution, potassium feldspar is added to the glaze, which can increase the aluminum oxide content in the glaze, lower the melting temperature, and improve the glaze's gloss, transparency, and smoothness. Sodium feldspar can lower the glaze's firing temperature. Nano-zinc oxide can reduce the glaze's viscosity, exerting surface effects, quantum effects, and high surface energy, thereby increasing the hardness of the glaze surface. Nano-silica, formed by tetrahedral bonding to form an irregular network, can also improve the gloss and hardness of tiles. Carboxymethyl cellulose can improve the glaze's suspension and adhesion. Sodium hexametaphosphate, added to the glaze's raw materials, can further enhance the dispersibility of nano-zinc oxide and nano-silica, allowing them to function better. Corundum micropowder has a high hardness and can improve the hardness of the glaze. Through the synergistic effect of the various raw materials, the hardness of the glaze can be increased, thereby improving the hardness of the tile.

[0034] In a second aspect, the present application provides a production process for imitation marble tiles that is easy to deeply reprocess, using the following technical solutions:

[0035] A production process for imitation marble tiles that are easy to deeply reprocess comprises the following steps:

[0036] S1: kaolin, dolomite, quartz, talc, bentonite, mixed reinforcing material and composite are uniformly mixed, crushed, sieved, pressed into shape and dried to obtain a green body;

[0037] S2: mixing potassium feldspar, sodium feldspar, nano zinc oxide, nano silicon dioxide, sodium hexametaphosphate, and corundum powder uniformly, crushing, and sieving to obtain a glaze;

[0038] S3: evenly pouring glaze on the body, drying, calcining, cooling and polishing to obtain imitation marble tiles.

[0039] Furthermore, a production process for imitation marble tiles that is easy to further process comprises the following steps:

[0040] S1: kaolin, dolomite, quartz, talc, bentonite, mixed reinforcing material, and composite are uniformly mixed, crushed, passed through a 200-mesh sieve, pressed into shape, and dried to obtain a green body;

[0041] S2: mixing potassium feldspar, sodium feldspar, nano zinc oxide, nano silicon dioxide, sodium hexametaphosphate, and corundum powder uniformly, crushing the mixture, and passing the mixture through a 100-mesh sieve to obtain a glaze;

[0042] S3: Apply the glaze evenly on the body, with a coating amount of 40-60g / m 2 After drying, calcining, cooling and polishing, imitation marble tiles are obtained.

[0043] Preferably, the firing temperature in step S3 is 1100-1200° C., and the firing time is 150-170 min.

[0044] By adopting the above technical solution, the raw materials of the green body are first mixed evenly and then ground. Then, the raw materials of the glaze are mixed evenly and ground. This facilitates a more even mixing of the raw materials of the green body and the glaze, and facilitates better performance of each raw material. The glaze is then evenly coated on the green body, and after firing and cooling, it is made into ceramic tiles, which facilitates improving the hardness of the ceramic tiles.

[0045] In summary, this application includes at least one of the following beneficial technical effects:

[0046] 1. Since the composite material of calcium carbonate microspheres and ultrafine silicon carbide is compounded in this application, not only the dispersibility of ultrafine silicon carbide is improved, making it easier to play a role, but also the synergistic effect between the two further improves the hardness of the green body, thereby improving the hardness of the tile, and the breaking strength can reach 1970N, the Mohs hardness grade reaches level 5, and the modulus of rupture reaches 65.5MPa.

[0047] 2. In this application, it is preferred that silane coupling agent be used to pre-treat the ultrafine silicon carbide, which can reduce the specific surface energy of the ultrafine silicon carbide, make the ultrafine silicon carbide more evenly dispersed, facilitate its function, and be more conducive to improving the hardness of the tile. DETAILED DESCRIPTION

[0048] The following is a further detailed description of this application in conjunction with the specific content.

[0049] raw material

[0050] The CAS number of polyacrylic acid is 9003-01-4, and the molecular weight is 250,000; the silane coupling agent is vinyltrimethoxysilane.

[0051] Preparation Example

[0052] Preparation Example 1

[0053] A calcium carbonate microsphere is prepared by the following method:

[0054] A1: Add 2.5 L of polyacrylic acid solution to 10 L of sodium carbonate solution, mix well, then add 12.5 kg of sodium dodecyl sulfate, mix well, and maintain in a water bath at 80°C for 0.5 h to obtain mixture A;

[0055] A2: Add 2.5 L of polyacrylic acid solution to 10 L of calcium chloride solution and mix well to obtain mixture B;

[0056] A3: Mix mixture A and mixture B, heat in a water bath at 90°C while stirring at 200 r / min, react for 1.2 h, then filter, wash with water five times, and dry to obtain calcium carbonate microspheres;

[0057] The concentration of the polyacrylic acid solution is 1 g / L, the concentration of the sodium carbonate solution is 0.1 mol / L, and the concentration of the calcium chloride solution is 0.1 mol / L.

[0058] Preparation Example 2

[0059] A composite is prepared by the following method:

[0060] 2 kg of calcium carbonate microspheres prepared in Preparation Example 1 and 4 kg of ultrafine silicon carbide were placed in 6 L of anhydrous ethanol, heated to 100° C., stirred at a speed of 400 r / min, and vacuumed while stirring until the pressure reached 0.1 MPa. The mixture was continued for 60 min, centrifuged, filtered, and dried to obtain a composite.

[0061] Preparation Example 3

[0062] A composite material, which differs from Preparation Example 2 in that the amount of ultrafine silicon carbide added is different. The amount of ultrafine silicon carbide added in Preparation Example 3 is 6 kg.

[0063] Preparation Example 4

[0064] A composite material, which differs from Preparation Example 2 in that the amount of ultrafine silicon carbide added is different. The amount of ultrafine silicon carbide added in Preparation Example 4 is 8 kg.

[0065] Example

[0066] Example 1

[0067] A marble-like tile that is easy to deeply reprocess and its production process, the raw material ratio of which is shown in Table 1.

[0068] A production process for imitation marble tiles that are easy to deeply reprocess comprises the following steps:

[0069] S1: kaolin, dolomite, quartz, talc, bentonite, mixed reinforcing material, and the composite prepared in Preparation Example 2 are uniformly mixed, crushed, passed through a 200-mesh sieve, pressed into shape, and dried to obtain a green body;

[0070] S2: mixing potassium feldspar, sodium feldspar, nano zinc oxide, nano silicon dioxide, sodium hexametaphosphate, and corundum powder uniformly, crushing the mixture, and passing the mixture through a 100-mesh sieve to obtain a glaze;

[0071] S3: Apply the glaze evenly on the body, with a coating amount of 50g / m 2 After drying, it is fired at 1150℃ for 160min, cooled and polished to obtain imitation marble tiles.

[0072] Example 2-3

[0073] A marble-like tile that is easy to deeply reprocess. The difference between the marble-like tile and Example 1 is that the raw material ratio of the tile is different. The raw material ratio is shown in Table 1.

[0074] Table 1 Weight of raw materials for ceramic tiles in Examples 1-3 (Unit: Kg)

[0075]

[0076]

[0077] Examples 4-5

[0078] A marble-like tile that is easy to deeply reprocess. The difference between it and Example 2 is that the raw material ratio of the tile is different. The raw material ratio is shown in Table 2.

[0079] Table 2 Weight of raw materials for ceramic tiles in Example 4-5 (unit: Kg)

[0080]

[0081]

[0082] Examples 6-7

[0083] A marble-like tile that is easy to deeply reprocess. The difference between it and Example 4 is that the raw material ratio of the tile is different. The raw material ratio is shown in Table 3.

[0084] Table 3 Weight of raw materials for ceramic tiles in Examples 6-7 (Unit: Kg)

[0085]

[0086]

[0087] Example 8

[0088] A marble-like tile that is easy to deeply reprocess. The difference between Example 8 and Example 6 is that the source of the composite is different. The composite in Example 8 is prepared using Preparation Example 3.

[0089] Example 9

[0090] A marble-like tile that is easy to deeply reprocess. The difference between Example 9 and Example 6 is that the source of the composite is different. The composite in Example 9 is prepared using the method of Preparation Example 4.

[0091] Example 10

[0092] A marble-like tile that is easy to further reprocess. The difference between this tile and Example 8 is that the ultrafine silicon carbide in the composite raw material is pretreated by the following method before use: the ultrafine silicon carbide is placed in a 60% by mass ethanol solution, a silane coupling agent is added, the mixture is mixed evenly, filtered, washed with water five times, and dried to obtain the pretreated ultrafine silicon carbide; wherein the amount of ethanol solution added to 1g of ultrafine silicon carbide is 4ml.

[0093] Comparative Example

[0094] Comparative Example 1

[0095] A marble-like tile that is easy to deeply reprocess, which differs from Example 1 in that an equal amount of the composite material is replaced by calcium carbonate microspheres.

[0096] Comparative Example 2

[0097] A marble-like tile that is easy to deeply reprocess, which differs from Example 1 in that an equal amount of the composite material is replaced by ultrafine silicon carbide.

[0098] Comparative Example 3

[0099] A marble-like tile that is easy to further reprocess, which differs from Example 1 in that no composite material is added to the raw materials of the tile body.

[0100] Comparative Example 4

[0101] A marble-like tile that is easy to further reprocess, which differs from Example 1 in that no mixed reinforcing material is added to the raw materials of the tile body.

[0102] Performance testing

[0103] The following performance tests were performed on the tiles in Examples 1-10 and Comparative Examples 1-4:

[0104] Destructive strength: The destructive strength of ceramic tiles was measured in accordance with GB / T3810.4-2006 "Test methods for ceramic tiles - Part 4: Determination of modulus of rupture and destructive strength". The test results are shown in Table 4.

[0105] Modulus of rupture: The modulus of rupture of ceramic tiles was measured in accordance with GB / T3810.4-2006 "Test methods for ceramic tiles - Part 4: Determination of modulus of rupture and breaking strength". The test results are shown in Table 4.

[0106] Mohs hardness grade: Place the tile steadily on a hard support with the glaze facing upwards. Use standard minerals with different Mohs values from small to large to scratch the tile surface in turn. Use the mineral edge to apply force evenly and vertically to scratch the tile surface. The lowest hardness value that can just produce obvious scratches is taken as the test result and recorded in Table 4.

[0107] Table 4 Test results

[0108] project Destructive strength (N) Mohs hardness scale (grade) Modulus of rupture / (MPa) Example 1 1950 4 64.5 Example 2 1950 4 64.5 Example 3 1950 4 64.6 Example 4 1955 4 64.8 Example 5 1955 4 64.8 Example 6 1955 4 65.0 Example 7 1955 4 65.0 Example 8 1965 5 65.2 Example 9 1960 5 65.2 Example 10 1970 5 65.5 Comparative Example 1 1950 3 60.3 Comparative Example 2 1950 3 60.2 Comparative Example 3 1940 2 59.6 Comparative Example 4 1955 4 62.4

[0109] As can be seen from Table 4, the imitation marble tiles of the present application, through the synergistic effect of the various raw materials, not only maintain good destructive strength and rupture modulus of the tiles, but also improve the hardness of the tiles. Among them, the destructive strength is 1950-1970N, the Mohs hardness grade is 4-5, and the rupture modulus is 64.5-65.5MPa.

[0110] Combining Example 1 and Comparative Examples 1-3, it can be seen that the ceramic tile in Example 1 has a destructive strength of 1950N, a Mohs hardness of 4, and a rupture modulus of 64.5MPa, which are better than Comparative Examples 1-3, indicating that the composite material composed of calcium carbonate microspheres and ultrafine silicon carbide in the raw materials of the ceramic tile is more suitable, which can not only maintain good destructive strength and rupture modulus of the ceramic tile, but also improve the hardness of the ceramic tile.

[0111] Combining Example 1 and Comparative Example 4, it can be seen that the ceramic tile in Example 1 has a destructive strength of 1950 N, a Mohs hardness grade of 4, and a rupture modulus of 64.5 MPa, which are better than Comparative Example 4, indicating that it is more appropriate to add mixed reinforcing materials to the raw materials of the ceramic tile body. Through the synergistic effect between the raw materials of the mixed reinforcing materials, the hardness of the ceramic tile is further improved while maintaining the excellent destructive strength and rupture modulus of the ceramic tile.

[0112] In combination with Example 6 and Examples 8-9, it can be seen that the ceramic tile in Example 8 has a destructive strength of 1965N, a Mohs hardness of 5, and a rupture modulus of 65.2MPa, which are better than Examples 6 and 9, indicating that the composite prepared by Preparation Example 2 is more suitable, which not only enables the ceramic tile to maintain good destructive strength and rupture modulus, but also improves the hardness of the ceramic tile.

[0113] Combining Example 8 and Example 10, it can be seen that the ceramic tile in Example 10 has a destructive strength of 1970N, a Mohs hardness of 5, and a rupture modulus of 65.5MPa, which are better than those in Example 8. This shows that it is more appropriate to pretreat the ultrafine silicon carbide before use, which not only enables the ceramic tile to maintain good destructive strength and rupture modulus, but also improves the hardness of the ceramic tile.

[0114] The above-mentioned specific implementation examples are all preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A marble-like tile that is easy to deeply reprocess, characterized by: The invention comprises a body and a glaze coated on the body, wherein the body comprises the following raw materials in parts by weight: 20-40 parts of kaolin, 5-15 parts of dolomite, 10-20 parts of quartz stone, 10-20 parts of talc powder, 10-15 parts of bentonite, 3-8 parts of mixed reinforcing material, and 8-12 parts of a composite; wherein the composite is a compound of calcium carbonate microspheres and ultrafine silicon carbide; The composite is prepared by the following method: calcium carbonate microspheres and ultrafine silicon carbide are placed in anhydrous ethanol, heated to a high temperature, stirred and vacuumed for a period of time, centrifuged, filtered, and dried to obtain the composite; The mixed reinforcing material is a mixture of aluminum oxide, calcium lignin sulfonate, ethyl acrylate, and sodium humate, and the weight ratio of aluminum oxide, calcium lignin sulfonate, ethyl acrylate, and sodium humate is 1:1:1:

1.

2. The imitation marble tile that is easy to deeply reprocess according to claim 1, characterized in that: The weight ratio of the calcium carbonate microspheres to the ultrafine silicon carbide is 1:(2-4).

3. The imitation marble tile that is easy to deeply reprocess according to claim 1, characterized in that: The calcium carbonate microspheres are prepared by the following method: A1: Add a portion of the polyacrylic acid solution to the sodium carbonate solution, mix well, then add sodium lauryl sulfate, mix well, and heat in a water bath to obtain a mixture A; A2: Add another portion of the polyacrylic acid solution to the calcium chloride solution and mix well to obtain mixture B; A3: Mix mixture A and mixture B, heat in a water bath, stir while heating, react for a period of time, then filter, wash, and dry to obtain calcium carbonate microspheres.

4. The imitation marble tile that is easy to deeply reprocess according to claim 1, characterized in that: The ultrafine silicon carbide is pretreated before use by the following method: placing the ultrafine silicon carbide in an ethanol solution, adding a silane coupling agent, mixing evenly, filtering, washing, and drying to obtain pretreated ultrafine silicon carbide.

5. The imitation marble tile that is easy to deeply reprocess according to claim 1, characterized in that: The glaze comprises the following raw materials in parts by weight: 20-30 parts of potassium feldspar, 10-15 parts of sodium feldspar, 5-10 parts of nano zinc oxide, 5-10 parts of nano silicon dioxide, 1-3 parts of sodium hexametaphosphate, and 4-8 parts of corundum micropowder.

6. A production process for imitation marble tiles that are easy to deeply reprocess as claimed in any one of claims 1 to 5, characterized in that: The steps include: S1: kaolin, dolomite, quartz, talc, bentonite, mixed reinforcing material and composite are uniformly mixed, crushed, sieved, pressed into shape and dried to obtain a green body; S2: mixing potassium feldspar, sodium feldspar, nano zinc oxide, nano silicon dioxide, sodium hexametaphosphate, and corundum powder uniformly, crushing, and sieving to obtain a glaze; S3: evenly pouring glaze on the body, drying, calcining, cooling and polishing to obtain imitation marble tiles.

7. The production process of imitation marble tiles that are easy to further process according to claim 6, characterized in that: The firing temperature in step S3 is 1100-1200° C., and the firing time is 150-170 minutes.

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