A wear-resistant dual-purpose ceramic glaze and its preparation method

Abstract

The present invention relates to a wear-resistant dual-purpose ceramic glaze and a preparation method thereof, belonging to the technical field of ceramic preparation. In the present invention, white fused alumina is modified. First, surface modification is carried out with a silane coupling agent, and then structural modification is carried out by doping composite metals. The modified white fused alumina has higher hardness and wear resistance, can effectively resist wear and scratches, thereby prolonging the service life of ceramic products. The modified white fused alumina can also make the glaze surface more delicate, smooth and shiny, improving the appearance quality of ceramic products; in the present invention, a wear-resistant coating is added on the surface of the ceramic glaze by spraying. This method can form a coating with extremely strong bonding force on the surface of the ceramic glaze. This is because during the spraying process, the coating material can penetrate into the tiny pores of the ceramic glaze, making the coating not easy to peel off. This coating improves the overall aesthetic degree of the ceramic glaze while enhancing the wear resistance.

Description

Technical Field

[0001] The present invention belongs to the technical field of ceramic preparation, and relates to a wear-resistant dual-purpose ceramic glaze and a preparation method thereof. Background Art

[0002] Glaze is a kind of silicate. The glaze applied on ceramic ware generally uses quartz, feldspar, and clay as raw materials. After grinding and adding water for modulation, it is coated on the surface of the green body and melted by firing at a certain temperature. When the temperature drops, a vitreous thin layer is formed on the surface of the ceramic. There are many types of glazes. According to the green body, they can be divided into: porcelain glaze, pottery glaze, and stoneware glaze; according to the firing temperature, they can be divided into: high-temperature glaze, low-temperature glaze; according to the appearance characteristics, they can be divided into: transparent glaze, opal glaze, color glaze, glossy glaze, matte glaze, crackle glaze (crazing), crystalline glaze, etc.; according to the glaze composition, they can be divided into: lime glaze, feldspar glaze, lead glaze, lead-free glaze, boron glaze, lead-boron glaze, etc. Ceramic glazing refers to attaching a vitreous layer of material to the surface of a ceramic body by means of high temperature. The purpose of glazing is to improve the surface physical and chemical properties of the green body, and at the same time increase the aesthetic feeling of the product and improve the service performance of the product. Glazing methods can be divided into wet glazing and dry glazing. Common ones include dipping glazing, pouring glazing, spraying glazing, brushing glazing, vapor glazing, etc.

[0003] In traditional processes, the hardness and wear resistance of the glaze surface are generally improved by adding wear-resistant media, but the improvement of its wear resistance is limited. Summary of the Invention

[0004] The purpose of the present invention is to provide a wear-resistant dual-purpose ceramic glaze and a preparation method thereof, which have the characteristics of wear resistance and stain resistance.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] The preparation method of the wear-resistant dual-purpose ceramic glaze is specifically as follows.

[0007] S1: Put the glaze components into a ball mill according to the formula ratio. The rotation speed of the ball mill is 300 r / min. After grinding for 1 h, then add 20 wt% of water, 10 wt% of ethylene glycol, 0.5 wt% of calcium oxide, and 0.45 wt% of sodium tripolyphosphate. Increase the rotation speed of the ball mill to 400 r / min and continue grinding for 8 h. Use a magnetic iron remover to remove iron to obtain glaze E.

[0008] The formula of the glaze components is calculated by mass percentage as follows: modified white corundum 25 - 30%, quartz 20 - 25%, petalite 20 - 25%, kaolin 10 - 15%, silicon carbide 10 - 15%, boron carbide 5 - 10%.

[0009] Among them, the preparation method of the modified white corundum is as follows.

[0010] S1.1: Mix chromium nitrate and nano-titanium dioxide in a mass ratio of (1 - 3):1, put them into a ball mill for grinding. The rotational speed of the ball mill is 300 r / min and the grinding duration is 0.5 h to obtain mixture A;

[0011] S1.2: Calcinate mixture A at 300 - 400 °C for 2 - 3 h to obtain composite oxide B. Mix composite oxide B and white fused alumina in a mass ratio of 1:(2 - 4), then add 0.2 wt% of rare earth oxide and 0.1 wt% of polyethylene glycol 2000, and then put them into a ball mill for grinding. The rotational speed of the ball mill is 300 r / min and the grinding duration is 0.5 h to obtain mixture C;

[0012] S1.3: Use a 10% mass fraction of alkali solution to perform alkali washing on mixture C at room temperature, then soak the alkali-washed mixture in a silane coupling agent, stir at a rotational speed of 150 r / min, while heating at a rate of 3 °C / min to 60 °C, keep the temperature constant for 1 h, and then put it into an oven at 110 °C to dry for 12 h to obtain mixture D;

[0013] S1.4: Transfer mixture D to sinter at 2000 °C for 1 h, cool to room temperature and then grind to a particle size of 150 mesh to obtain the modified white fused alumina;

[0014] S2: Purge the surface of the green body with nitrogen, apply glaze E on the surface of the green body by the glazing method, and let it stand and dry after glazing to obtain green body F;

[0015] S3: Put green body F into a kiln for firing. The kiln temperature is 2200 °C, the firing cycle is 70 min, cool to room temperature after firing, and polish to obtain green body G;

[0016] S4: Spray a wear-resistant coating on the surface of green body G to obtain the wear-resistant dual-purpose ceramic glaze.

[0017] Furthermore, the rare earth oxide in S1.2 is one or more of cerium oxide, lanthanum oxide, and praseodymium oxide.

[0018] Furthermore, the alkali solution in S1.3 is one of ammonia water, sodium hydroxide solution, and potassium hydroxide solution.

[0019] Furthermore, the silane coupling agent in S1.3 is one of silane coupling agent KH-560 and silane coupling agent KH-792.

[0020] Furthermore, the flow rate of nitrogen in S2 is 10 m / s.

[0021] Further, the parameters of the glaze pouring method in S2 are as follows: the pouring distance is 35 cm, the glaze application amount is 60 g / piece, and the size of the brick piece is 300*600 mm.

[0022] Further, the polishing parameters in S3 are as follows: first, polish with a 500-mesh grinding head for 0.5 h, then polish with a 1000-mesh grinding head for 0.5 h, and finally polish with a 2000-mesh grinding head for 1 h.

[0023] Further, the preparation method of the coating material used for the wear-resistant coating in S4 is as follows: dissolve fluorosilicone resin in isopropyl acetate to obtain a mixed solution with a mass fraction of 60%, add 0.5 wt% of nano-silica, and grind at a rotation speed of 400 r / min for 2 h to obtain the coating material used for the wear-resistant coating.

[0024] Further, the parameters of spraying in S4 are as follows: the spraying distance is 60 mm, and the spraying rate is 50 mm / s.

[0025] White fused alumina, also known as alumina, is an artificial synthetic material mainly composed of alumina. It has the characteristics of high hardness, high wear resistance, high heat resistance, good chemical stability and corrosion resistance. Through modification treatment, the hardness and wear resistance of the glaze surface can be further improved to meet more usage conditions. In the present invention, the white fused alumina is purchased from Wuhan Jiyesheng Chemical Co., Ltd., and its purity is 99%.

[0026] During the surface modification process, first perform an alkali washing treatment on the white fused alumina to remove surface impurities and increase the hydroxyl content, and then perform a silane coupling agent modification. The silane coupling agent can undergo a coupling reaction with the hydroxyl groups on the surface of the white fused alumina to make its surface organic, enhance the mutual solubility and binding force with organic substances. The use of the silane coupling agent can also enhance the binding force between the glaze layer and the substrate, and at the same time improve the gloss of the glaze surface, making it have better ornamental properties.

[0027] The doping of metal elements can change the crystal structure and electronic state of white fused alumina, thereby improving its performance. By doping chromium elements, the hardness and wear resistance of white fused alumina can be improved. Chromium elements can partially dissolve in the lattice of white fused alumina to form a solid solution. This solid solution will cause lattice distortion, increase the dislocation density, thereby hindering the movement of dislocations and improving the hardness and strength of the material. At the same time, the solid solution can also improve the wear resistance of the material because the hindered movement of dislocations makes it more difficult for the material surface to be worn. The undissolved chromium elements in white fused alumina will form second-phase particles. These second-phase particles can act as hard particles to play a supporting role when the material is worn, reducing the wear amount of the material. In addition, the second-phase particles can also hinder the propagation of cracks and improve the fracture toughness of the material;

[0028] Titanium can react with oxygen in white corundum to form high-melting-point titanate compounds. These high-melting-point compounds can maintain a stable structure at high temperatures, thereby improving the high-temperature resistance of the material; the doping of titanium can also change the thermophysical properties such as the thermal expansion coefficient and thermal conductivity of white corundum, making it have better thermal stability at high temperatures. This thermal stability helps to reduce the thermal stress and thermal fatigue damage of the material at high temperatures.

[0029] The doping of rare earth oxides can improve the wear resistance of the material by refining the grains and reducing the defects. Then, sintering treatment is carried out on white corundum and the doped composite metal at high temperatures to improve its overall strength. Using the modified white corundum as the material makes the ceramic glaze have better wear resistance.

[0030] In order to further improve the wear resistance and ornamental properties of the ceramic glaze, a wear-resistant coating is attached to the surface of the ceramic glaze. Fluorosilicone resin itself has excellent wear resistance, and the addition of nano-silica further enhances the hardness and wear resistance of the coating. Nano-silica has the surface effect and small size effect of nanomaterials, can form a uniform dispersion phase in the coating, enhance the densification and hardness of the coating, so as to resist external wear; the interfacial force between nano-silica and fluorosilicone resin is strong, can form a stable bond, prevent the coating from peeling off during the wear process, and the fluorine atoms in the fluorosilicone resin have a low surface energy, can form a lubricating film on the surface of the coating, reduce friction and wear; in addition, the fluorosilicone resin coating has a smooth and flat surface, can improve the overall aesthetic degree of the ceramic glaze, and the addition of nano-silica can further improve the gloss of the coating and enhance the ornamental properties.

[0031] During the curing process, the curing of the fluorosilicone resin coating is a cross-linking reaction process, forming a three-dimensional network structure through the chemical reaction between resin molecules. Nano-silica, as an inorganic filler, can be fixed in the coating and form a stable combination with resin molecules. The fluorosilicone resin of the present invention is purchased from Hubei Zhonglong Kangsheng Fine Chemical Co., Ltd., with a purity of 99%;

[0032] In the formula of the present invention, the hardness and chemical stability of quartz make it not easily damaged in the wear and high-temperature environment. At the same time, its anti-color bleeding performance helps to maintain the beauty of the glaze surface; the hardness and wear resistance of spodumene improve the overall hardness and wear resistance of the glaze surface through physical filling and strengthening effects; the chemical stability and strengthening effects of kaolin enable the glaze surface to maintain good performance when subjected to wear and chemical erosion; the high hardness and wear resistance of silicon carbide and boron carbide resist wear and erosion through physical barrier effects, and their high-temperature resistance ensures the performance stability of the glaze surface in the high-temperature environment.

[0033] The beneficial effects of the present invention:

[0034] The present invention modifies white fused alumina. First, it is surface-modified with a silane coupling agent, and then structurally modified by doping with composite metals. The modified white fused alumina has higher hardness and wear resistance, can effectively resist wear and scratches, thereby extending the service life of ceramic products. The modified white fused alumina can also make the glaze surface more delicate, smooth and shiny, improving the appearance quality of ceramic products;

[0035] The present invention sprays a wear-resistant coating on the surface of the ceramic glaze. This method can form a coating with extremely strong bonding force on the surface of the ceramic glaze. This is because during the spraying process, the coating material can penetrate into the tiny pores of the ceramic glaze, making the coating not easy to peel off. While improving the wear resistance, this coating also enhances the overall aesthetics of the ceramic glaze. Specific embodiments

[0036] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following, in combination with embodiments, details the specific embodiments, structures, features and their effects according to the present invention as follows.

[0037] Formulation ratio 1: By mass percentage, 30% modified white fused alumina, 20% quartz, 20% spodumene, 10% kaolin, 10% silicon carbide, 10% boron carbide;

[0038] Formulation ratio 2: By mass percentage, 25% modified white fused alumina, 25% quartz, 20% spodumene, 10% kaolin, 10% silicon carbide, 10% boron carbide;

[0039] Formulation ratio 3: By mass percentage, 25% modified white fused alumina, 20% quartz, 25% spodumene, 15% kaolin, 10% silicon carbide, 5% boron carbide;

[0040] Formulation ratio 4: By mass percentage, 30% modified white fused alumina, 20% quartz, 20% spodumene, 10% kaolin, 15% silicon carbide, 5% boron carbide;

[0041] Example 1

[0042] In this example, the preparation method of the ceramic glaze is as follows,

[0043] S1: Put the components of the glaze in a ball mill according to formulation ratio 1. The rotation speed of the ball mill is 300 r / min. After grinding for 1 h, then add 20 wt% water, 10 wt% ethylene glycol, 0.5 wt% calcium oxide and 0.45 wt% sodium tripolyphosphate. Increase the rotation speed of the ball mill to 400 r / min and continue grinding for 8 h. Use a magnetic iron remover to remove iron to obtain glaze E;

[0044] In this example, the preparation method of the modified white fused alumina is as follows,

[0045] S1.1: Mix chromium nitrate and nano-titanium dioxide in a mass ratio of 2:1, put them into a ball mill for grinding. The rotational speed of the ball mill is 300 r / min, and the grinding duration is 0.5 h to obtain mixture A;

[0046] S1.2: Calcine mixture A at 300 °C for 2 h to obtain composite oxide B. Mix composite oxide B and white fused alumina in a mass ratio of 1:4, then add 0.2 wt% of cerium oxide and 0.1 wt% of polyethylene glycol 2000, and then put them into a ball mill for grinding. The rotational speed of the ball mill is 300 r / min, and the grinding duration is 0.5 h to obtain mixture C;

[0047] S1.3: Use 10% ammonia water by mass to perform alkali washing on mixture C at room temperature, then soak the alkali-washed mixture in silane coupling agent KH-560, stir at a rotational speed of 150 r / min, while heating at a rate of 3 °C / min to 60 °C, keep the temperature constant for 1 h, and then put it into an oven at 110 °C to dry for 12 h to obtain mixture D;

[0048] S1.4: Transfer mixture D to sinter at 2000 °C for 1 h. After cooling to room temperature, grind it to a particle size of 150 mesh to obtain the modified white fused alumina;

[0049] S2: Purge the surface of the green body with nitrogen, the flow rate of nitrogen is 10 m / s. Apply glaze E on the surface of the green body by the glazing method. The glazing method parameters are: pouring distance 35 cm, glazing amount 60 g / piece, brick size 300*600 mm. After glazing, let it stand and dry to obtain green body F;

[0050] S3: Put green body F into a kiln for firing. The kiln temperature is 2200 °C, the firing cycle is 70 min. After firing, cool it to room temperature and polish it. The polishing parameters are: first polish with a 500-mesh grinding head for 0.5 h, then polish with a 1000-mesh grinding head for 0.5 h, and finally polish with a 2000-mesh grinding head for 1 h to obtain green body G;

[0051] S4: Spray a wear-resistant coating on the surface of green body G. The spraying parameters are spraying distance 60 mm, spraying rate 50 mm / s to obtain the wear-resistant dual-purpose ceramic glaze;

[0052] Among them, the preparation method of the coating used for the wear-resistant coating in S4 is as follows,

[0053] Dissolve fluorosilicone resin in isopropyl acetate to obtain a mixed solution with a mass fraction of 60%, add 0.5 wt% nano-silica, and grind at a rotational speed of 400 r / min for 2 h to obtain the coating used for the wear-resistant coating.

[0054] Example 2

[0055] In this embodiment, the preparation method of the ceramic glaze is as follows:

[0056] S1: Put the components of the glaze into a ball mill according to the formula ratio 2. The rotation speed of the ball mill is 300 r / min. After grinding for 1 h, add 20 wt% of water, 10 wt% of ethylene glycol, 0.5 wt% of calcium oxide and 0.45 wt% of sodium tripolyphosphate. Increase the rotation speed of the ball mill to 400 r / min and continue grinding for 8 h. Use a magnetic iron remover to remove iron to obtain glaze E.

[0057] In this embodiment, the preparation method of the modified white fused alumina is as follows:

[0058] S1.1: Mix chromium nitrate and nano-titanium dioxide according to a mass ratio of 3:1, put them into a ball mill for grinding. The rotation speed of the ball mill is 300 r / min and the grinding duration is 0.5 h to obtain mixture A.

[0059] S1.2: Calcine mixture A at 400 °C for 2 h to obtain composite oxide B. Mix composite oxide B and white fused alumina according to a mass ratio of 1:2, add 0.2 wt% of lanthanum oxide and 0.1 wt% of polyethylene glycol 2000, and then put them into a ball mill for grinding. The rotation speed of the ball mill is 300 r / min and the grinding duration is 0.5 h to obtain mixture C.

[0060] S1.3: Wash mixture C with a 10% mass fraction of sodium hydroxide solution at room temperature, then soak the alkali-washed mixture in silane coupling agent KH-560, stir at a rotation speed of 150 r / min, while heating at a rate of 3 °C / min to 60 °C, keep the temperature constant for 1 h, and then put it into an oven at 110 °C to dry for 12 h to obtain mixture D.

[0061] S1.4: Transfer mixture D to sinter at 2000 °C for 1 h. After cooling to room temperature, grind it to a particle size of 150 mesh to obtain the modified white fused alumina.

[0062] S2: Purge the surface of the green body with nitrogen, and the flow rate of nitrogen is 10 m / s. Pour glaze E on the surface of the green body by the dipping glazing method. The parameters of the dipping glazing method are: pouring distance 35 cm, glazing amount 60 g / piece, brick size 300*600 mm. After glazing, let it stand and dry to obtain green body F.

[0063] S3: Put green body F into a kiln for firing. The kiln temperature is 2200 °C and the firing cycle is 70 min. After firing, cool it to room temperature and polish it. The polishing parameters are: first polish with a 500-mesh grinding head for 0.5 h, then polish with a 1000-mesh grinding head for 0.5 h, and finally polish with a 2000-mesh grinding head for 1 h to obtain green body G.

[0064] S4: Spray a wear-resistant coating on the surface of the green body G with the spraying parameters of spraying distance 60 mm and spraying rate 50 mm / s to obtain the wear-resistant dual-purpose ceramic glaze.

[0065] Among them, the preparation method of the coating material used for the wear-resistant coating in S4 is as follows.

[0066] Dissolve fluorosilicone resin in isopropyl acetate to obtain a mixed solution with a mass fraction of 60%, add 0.5 wt% nano-silica, and grind for 2 h at a rotation speed of 400 r / min to obtain the coating material used for the wear-resistant coating.

[0067] Example 3

[0068] The preparation method of the ceramic glaze in this example is as follows.

[0069] S1: Put the components of the glaze in a ball mill according to the formula ratio 3. The rotation speed of the ball mill is 300 r / min. After grinding for 1 h, add 20 wt% of water, 10 wt% of ethylene glycol, 0.5 wt% of calcium oxide, and 0.45 wt% of sodium tripolyphosphate. Raise the rotation speed of the ball mill to 400 r / min and continue grinding for 8 h. Use a magnetic iron remover to remove iron to obtain glaze E.

[0070] The preparation method of the modified white corundum in this example is as follows.

[0071] S1.1: Mix chromium nitrate and nano-titanium dioxide according to a mass ratio of 4:1, put them into a ball mill for grinding. The rotation speed of the ball mill is 300 r / min, and the grinding duration is 0.5 h to obtain mixture A.

[0072] S1.2: Bake mixture A at 400 °C for 3 h to obtain composite oxide B. Mix composite oxide B and white corundum according to a mass ratio of 1:4, add 0.2 wt% of praseodymium oxide and 0.1 wt% of polyethylene glycol 2000, and then put them into a ball mill for grinding. The rotation speed of the ball mill is 300 r / min, and the grinding duration is 0.5 h to obtain mixture C.

[0073] S1.3: Use a 10% potassium hydroxide solution to perform alkali washing on mixture C at room temperature, then soak the alkali-washed mixture in silane coupling agent KH-792, stir at a rotation speed of 150 r / min, and while stirring, heat it up to 60 °C at a rate of 3 °C / min. After keeping it at a constant temperature for 1 h, put it into an oven at 110 °C and dry it for 12 h to obtain mixture D.

[0074] S1.4: Transfer mixture D to sinter at 2000 °C for 1 h. After cooling to room temperature, grind it to a particle size of 150 mesh to obtain the modified white corundum.

[0075] S2: Purge the surface of the green body with nitrogen at a flow rate of 10 m / s. Apply glaze E to the surface of the green body by the glaze pouring method. The parameters of the glaze pouring method are as follows: the pouring distance is 35 cm, the glaze application amount is 60 g per piece, the size of the brick piece is 300*600 mm. After glaze pouring, let it stand and dry to obtain the green body F.

[0076] S3: Put the green body F into a kiln for firing. The kiln temperature is 2200 °C, and the firing cycle is 70 min. After firing, cool it to room temperature and then polish it. The polishing parameters are as follows: first, polish with a 500-mesh grinding head for 0.5 h, then polish with a 1000-mesh grinding head for 0.5 h, and finally polish with a 2000-mesh grinding head for 1 h to obtain the green body G.

[0077] S4: Spray a wear-resistant coating on the surface of the green body G. The spraying parameters are: spraying distance 60 mm, spraying rate 50 mm / s to obtain the wear-resistant dual-purpose ceramic glaze.

[0078] Among them, the preparation method of the coating material used for the wear-resistant coating in S4 is as follows.

[0079] Dissolve fluorosilicone resin in isopropyl acetate to obtain a mixed solution with a mass fraction of 60%. Add 0.5 wt% of nano-silica and grind it at a rotation speed of 400 r / min for 2 h to obtain the coating material used for the wear-resistant coating.

[0080] Example 4

[0081] The preparation method of the ceramic glaze in this example is as follows.

[0082] S1: Put the components of the glaze into a ball mill according to the formula ratio 4. The rotation speed of the ball mill is 300 r / min. After grinding for 1 h, add 20 wt% of water, 10 wt% of ethylene glycol, 0.5 wt% of calcium oxide, and 0.45 wt% of sodium tripolyphosphate. Raise the rotation speed of the ball mill to 400 r / min and continue grinding for 8 h. Use a magnetic iron remover to remove iron to obtain glaze E.

[0083] The preparation method of the modified white fused alumina in this example is as follows.

[0084] S1.1: Mix chromium nitrate and nano-titanium dioxide in a mass ratio of 1:1 and put them into a ball mill for grinding. The rotation speed of the ball mill is 300 r / min, and the grinding duration is 0.5 h to obtain mixture A.

[0085] S1.2: Roast the mixture A at 300 °C for 2 h to obtain the composite oxide B. Mix the composite oxide B and white fused alumina at a mass ratio of 1:4, then add 0.2 wt% of cerium oxide and 0.1 wt% of polyethylene glycol 2000, and then put them into a ball mill for grinding. The rotation speed of the ball mill is 300 r / min, and the grinding time is 0.5 h to obtain the mixture C;

[0086] S1.3: Use 10% ammonia water by mass fraction to perform alkali washing on the mixture C at room temperature, then soak the alkali-washed mixture into the silane coupling agent KH-560, stir at a rotation speed of 150 r / min, and while stirring, heat it to 60 °C at a rate of 3 °C / min. After keeping it at a constant temperature for 1 h, put it into an oven at 110 °C and dry it for 12 h to obtain the mixture D;

[0087] S1.4: Transfer the mixture D to sinter at 2000 °C for 1 h. After cooling to room temperature, grind it to a particle size of 150 mesh to obtain the modified white fused alumina;

[0088] S2: Purge the surface of the green body with nitrogen, and the flow rate of nitrogen is 10 m / s. Pour the glaze E on the surface of the green body by the glazing method. The glazing method parameters are: pouring distance 35 cm, glazing amount 60 g / piece, brick size 300*600 mm. After glazing, let it stand and dry to obtain the green body F;

[0089] S3: Put the green body F into a kiln for firing. The kiln temperature is 2200 °C, and the firing cycle is 70 min. After firing, cool it to room temperature and polish it. The polishing parameters are: first polish with a 500-mesh grinding head for 0.5 h, then polish with a 1000-mesh grinding head for 0.5 h, and finally polish with a 2000-mesh grinding head for 1 h to obtain the green body G;

[0090] S4: Spray a wear-resistant coating on the surface of the green body G. The spraying parameters are spraying distance 60 mm and spraying rate 50 mm / s to obtain the wear-resistant dual-purpose ceramic glaze.

[0091] Among them, the preparation method of the coating used for the wear-resistant coating in S4 is as follows,

[0092] Dissolve the fluorosilicone resin in isopropyl acetate to obtain a mixed solution with a mass fraction of 60%, add 0.5 wt% of nano-silica, and grind it at a rotation speed of 400 r / min for 2 h to obtain the coating used for the wear-resistant coating.

[0093] Comparative Example 1

[0094] In this comparative example, the white fused alumina is not modified, and the other steps are the same as those in Example 1.

[0095] Comparative Example 2

[0096] In this comparative example, chromium nitrate is not added during the modification of white fused alumina, and the remaining steps are the same as those in Example 1.

[0097] Comparative Example 3

[0098] In this comparative example, nano-titanium dioxide is not added during the modification of white fused alumina, and the remaining steps are the same as those in Example 1.

[0099] Comparative Example 4

[0100] In this comparative example, rare earth oxides are not added during the modification of white fused alumina, and the remaining steps are the same as those in Example 1.

[0101] Comparative Example 5

[0102] In this comparative example, silane coupling agent KH-560 is not added during the modification of white fused alumina, and the remaining steps are the same as those in Example 1.

[0103] Comparative Example 6

[0104] In this comparative example, a wear-resistant coating is not sprayed on the surface of green body G, and the remaining steps are the same as those in Example 1.

[0105] The wear-resistant dual-purpose ceramic glaze prepared in the examples and comparative examples was tested for wear resistance in accordance with GB / T 3810.7-2016, the surface stain resistance was tested in accordance with GB / T 3810.14-2016, and the glossiness of the ceramic glaze surface was detected by a glossmeter in accordance with the GB / T 11420-2024 standard. The experimental results are summarized in the following table.

[0106] Wear resistance (level) Stain resistance (level) Glossiness (%) Example 1 5 5 90 Example 2 5 5 85 Example 3 5 5 85 Example 4 5 5 85 Comparative Example 1 2 3 75 Comparative Example 2 3 4 80 Comparative Example 3 4 3 80 Comparative Example 4 3 4 80 Comparative Example 5 4 2 70 Comparative Example 6 2 3 70

[0107] It can be seen from the experimental data that the modification of white fused alumina and the addition of the wear-resistant layer have improved the wear resistance, stain resistance and glossiness of the ceramic glaze.

[0108] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content within the scope of the technical solution of the present invention to make equivalent embodiments with equivalent changes. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A method for preparing a wear-resistant dual-purpose ceramic glaze, characterized in that: The preparation method of the wear-resistant dual-purpose ceramic glaze is specifically as follows: S1: Put the glaze ingredients into a ball mill according to the formula ratio, the speed of the ball mill is 300r / min, after grinding for 1h, add 20wt% of water, 10wt% of ethylene glycol, 0.5wt% of calcium oxide and 0.45wt% of sodium tripolyphosphate, increase the speed of the ball mill to 400r / min, continue grinding for 8h, use a magnetic iron remover to remove iron, and obtain glaze E; The formula of the glaze composition is as follows by mass percentage: modified white corundum 25-30%, quartz 20-25%, petalite 20-25%, kaolin 10-15%, silicon carbide 10-15%, boron carbide 5-10%; The preparation method of modified white corundum is as follows: S1.1: Mix chromium nitrate and nano-titanium dioxide in a mass ratio of (1-3):1, put them into a ball mill for grinding, the ball mill speed is 300r / min, the grinding time is 0.5h, and a mixture A is obtained; S1.2: calcine mixture A at 300-400°C for 2-3h to obtain composite oxide B, mix composite oxide B and white corundum in a mass ratio of 1:(2-4), add 0.2 wt% of rare earth oxide and 0.1 wt% of polyethylene glycol 2000, and grind in a ball mill at a speed of 300 r / min for 0.5 h to obtain mixture C; S1.3: Use a 10% alkali solution at room temperature to wash the mixture C, then immerse the washed mixture in a silane coupling agent, stir at a speed of 150 r / min, and heat to 60°C at a rate of 3°C / min while stirring. After keeping the temperature constant for 1 hour, put it in a 110°C oven and dry it for 12 hours to obtain a mixture D; S1.4: The mixture D is transferred to 2000° C. for sintering for 1 hour, and then ground to a particle size of 150 mesh after cooling to room temperature to obtain the modified white corundum; S2: The surface of the green body is purged with nitrogen, and glaze E is poured on the surface of the green body by a pouring glaze method. After the pouring glaze is completed, the green body is left to dry to obtain a green body F; S3: placing the green body F in a kiln for firing at a kiln temperature of 2200°C and a firing cycle of 70 minutes, cooling to room temperature after firing, and polishing to obtain green body G; S4: spraying a layer of wear-resistant coating on the surface of the body G to obtain the wear-resistant dual-purpose ceramic glaze. The preparation method of the coating used for the wear-resistant coating is as follows: dissolving fluorosilicone resin in isopropyl acetate to obtain a mixed solution with a mass fraction of 60%, adding 0.5wt% nano-silicon dioxide, and grinding at a speed of 400r / min for 2h to obtain the coating used for the wear-resistant coating.

2. The method for preparing a wear-resistant dual-purpose ceramic glaze according to claim 1, characterized in that: The rare earth oxide in S1.2 is one or more of cerium oxide, lanthanum oxide and praseodymium oxide.

3. The method for preparing a wear-resistant dual-purpose ceramic glaze according to claim 1, characterized in that: The alkaline solution in S1.3 is one of ammonia water, sodium hydroxide solution and potassium hydroxide solution.

4. The method for preparing a wear-resistant dual-purpose ceramic glaze according to claim 1, characterized in that: The silane coupling agent in S1.3 is one of silane coupling agent KH-560 and silane coupling agent KH-792.

5. The method for preparing a wear-resistant dual-purpose ceramic glaze according to claim 1, characterized in that: The flow rate of nitrogen in the S2 is 10 m / s.

6. The method for preparing a wear-resistant dual-purpose ceramic glaze according to claim 1, characterized in that: The parameters of the glazing method in S2 are: pouring distance 35 cm, glazing amount 60 g / piece, and brick size 300*600 mm.

7. The method for preparing a wear-resistant dual-purpose ceramic glaze according to claim 1, characterized in that: The polishing parameters in S3 are: first, polishing with a 500-mesh grinding head for 0.5 h, then polishing with a 1000-mesh grinding head for 0.5 h, and finally polishing with a 2000-mesh grinding head for 1 h.

8. The method for preparing a wear-resistant dual-purpose ceramic glaze according to claim 1, characterized in that: The parameters of the S4 spraying are a spraying distance of 60 mm and a spraying rate of 50 mm / s.

9. A wear-resistant dual-purpose ceramic glaze prepared by the preparation method according to any one of claims 1 to 8.