Copper-gallium modified alumina, and preparation method and application thereof
Copper-gadolinium modified alumina was prepared by mixing pseudoboehmite, copper salt and gadolinium salt in a specific ratio and applied to antibacterial ceramic glaze, which solved the problem of insufficient antibacterial and corrosion resistance of ceramic tiles and improved the antibacterial effect and corrosion resistance of ceramic tiles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- THE GBA NAT INST FOR NANOTECHNOLOGY INNOVATION
- Filing Date
- 2024-12-06
- Publication Date
- 2026-06-09
Smart Images
Figure CN122166808A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of inorganic materials technology, and more specifically, to a copper-gadolinium modified alumina, its preparation method, and its application. Background Technology
[0002] In recent years, pathogenic microorganisms, especially bacteria, have posed an increasing threat to human health. Bacterial infections are easily transmitted, leading to widespread illness in a short period. Treating bacterial infections consumes significant medical resources, including medical personnel, facilities, and medications, resulting in socioeconomic and resource losses. Meanwhile, antibiotics are widely used as common treatments for bacterial infections; however, their overuse can exacerbate antibiotic resistance, causing irreversible damage to human health. Therefore, implementing antibacterial treatments and measures in public places such as schools, hospitals, and public transportation to reduce the spread of bacteria in the environment helps protect public health. To this end, many industries are launching products with antibacterial properties, such as antibacterial ceramic tiles.
[0003] Ordinary ceramic tiles themselves do not have antibacterial activity against pathogenic microorganisms. Therefore, bacteria and other pathogenic microorganisms easily remain on the surface of tiles, and their presence, reproduction, and accumulation can pose safety hazards to human health and the living environment. The use of antibacterial tiles can cut off the transmission routes of bacterial infections, providing a healthy and safe guarantee for daily life, especially in public places such as hospitals, schools, restaurants, entertainment venues, train stations, and airports. The antibacterial effect of antibacterial tiles is due to the use of ceramic glazes containing antibacterial agents. Furthermore, since hospitals and similar places often use acidic or alkaline cleaning agents and disinfectants, tiles resistant to acid and alkali corrosion can better maintain their antibacterial function and extend their service life.
[0004] Therefore, it is of great significance to develop a copper gadolinium-modified alumina antibacterial agent that can improve the antibacterial, acid corrosion resistance and alkali corrosion resistance of ceramic tiles. Summary of the Invention
[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a copper gadolinium modified alumina antibacterial agent, its preparation method, and its application, which can improve the antibacterial, acid corrosion resistance, and alkali corrosion resistance of ceramic tiles.
[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:
[0007] In a first aspect, the present invention provides a copper-gadolinium modified alumina, which is prepared by mixing boehmite, copper salt and gadolinium salt, adding acid to form a gel, and calcining.
[0008] The ratio of the mass of the pseudoboehmite, the amount of copper in the copper salt, and the amount of gadolinium in the gadolinium salt is 25g:(0.01-0.15)mol:(0.001-0.030)mol.
[0009] This invention regulates the amount and distribution of copper and gadolinium in copper-gadolinium modified alumina by using specific proportions of boehmite, copper salt, and gadolinium salt. This not only stimulates and promotes the alumina to fully exert its antibacterial effect, but also improves the structural stability and strength of the copper-gadolinium modified alumina, thereby enhancing the antibacterial, acid corrosion resistance, and alkali corrosion resistance of the ceramic tiles made from it.
[0010] Preferably, the ratio of the mass of the pseudoboehmite, the amount of copper in the copper salt, and the amount of gadolinium in the gadolinium salt is 25g:(0.04-0.12)mol:(0.005-0.025)mol.
[0011] More preferably, the ratio of the mass of the pseudoboehmite, the amount of copper in the copper salt, and the amount of gadolinium in the gadolinium salt is 25g:0.08mol:0.015mol.
[0012] Preferably, the calcination temperature is 600-1300℃.
[0013] This invention controls the structure, stability, and strength of copper gadolinium-modified alumina by adjusting the calcination temperature, thereby further improving the antibacterial, acid corrosion resistance, and alkali corrosion resistance of ceramic tiles.
[0014] More preferably, the calcination temperature is 800-1200℃.
[0015] More preferably, the calcination temperature is 1100°C.
[0016] Preferably, the calcination time is 0.5-24 hours.
[0017] Preferably, the copper salt is at least one of copper nitrate and copper chloride.
[0018] Preferably, the gadolinium salt is at least one of gadolinium nitrate and gadolinium chloride.
[0019] Preferably, the acid is at least one of nitric acid and hydrochloric acid.
[0020] Preferably, the process further includes drying before calcination.
[0021] More preferably, the drying temperature is 50-100°C.
[0022] Preferably, the mixing refers to adding copper salt and gadolinium salt to the pseudoboehmite solution for mixing.
[0023] More preferably, the mass fraction of the pseudoboehmite solution is 5%-15%.
[0024] More preferably, the solvent of the pseudoboehmite solution is at least one of water and ethanol.
[0025] Secondly, the present invention provides an application of copper gadolinium-modified alumina in antibacterial applications.
[0026] Thirdly, the present invention provides an antibacterial ceramic glaze, comprising the following components by weight:
[0027] 40-60 parts bentonite, 10-20 parts zircon, 5-15 parts quartz sand, 5-15 parts calcite, 5-20 parts copper gadolinium modified alumina, 5-10 parts glass powder, 5-10 parts albite, 0-12 parts dispersant, and 40-70 parts water.
[0028] Preferably, the copper-gadolinium modified alumina is 10-15 parts by weight.
[0029] Preferably, the dispersant is sodium stearate and sodium polyacrylate in a weight ratio of 1:(0.5-4).
[0030] This invention promotes the dispersion of copper gadolinium-modified alumina in antibacterial ceramic glazes by selecting specific dispersants, thereby further improving the antibacterial, acid corrosion resistance, and alkali corrosion resistance of ceramic tiles.
[0031] More preferably, the dispersant is sodium stearate and sodium polyacrylate in a weight ratio of 1:(1-3).
[0032] More preferably, the dispersant is sodium stearate and sodium polyacrylate in a weight ratio of 1:2.
[0033] Preferably, the dispersant is present in 3-12 parts by weight.
[0034] More preferably, the dispersant is present in 5-10 parts by weight.
[0035] Fourthly, the present invention provides a method for preparing an antibacterial ceramic glaze, comprising: mixing the components to obtain the antibacterial ceramic glaze.
[0036] Fifthly, the present invention provides an antibacterial ceramic tile, comprising a bisque and a glaze layer, wherein the raw material of the glaze layer contains an antibacterial ceramic glaze.
[0037] Preferably, the raw materials for the green body contain kaolin, quartz sand, wollastonite, and cordierite.
[0038] More preferably, the raw material of the green body contains the following components in parts by weight:
[0039] Kaolin 25-45 parts, quartz sand 25-45 parts, wollastonite 5-15 parts, cordierite 3-8 parts.
[0040] Sixthly, the present invention provides a method for preparing antibacterial ceramic tiles, comprising the following steps:
[0041] S1. Mix the raw materials of the green blank, press them into shape, and obtain the green blank;
[0042] S2. The raw material for covering the glaze layer on the unglazed green body is sintered to obtain antibacterial ceramic tiles.
[0043] Preferably, step S1 specifically involves: wet ball milling the raw material of the green blank into a slurry, drying it, pressing it into shape, and obtaining the green blank.
[0044] Preferably, in step S2, the sintering temperature is 1000-1500℃ and the time is 0.5-18h.
[0045] Preferably, in step S2, drying is also included before sintering.
[0046] Preferably, in step S2, the covering refers to coating and / or spraying.
[0047] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0048] This invention regulates the amount and distribution of copper and gadolinium in copper-gadolinium modified alumina by using specific proportions of boehmite, copper salt, and gadolinium salt. This not only stimulates and promotes the alumina to fully exert its antibacterial effect, but also improves the structural stability and strength of the copper-gadolinium modified alumina, thereby enhancing the antibacterial, acid corrosion resistance, and alkali corrosion resistance of the ceramic tiles made from it. Attached Figure Description
[0049] Figure 1 The figures show actual images of the antibacterial tiles used in Application Example 1 and Comparative Application Example 1. In the figures, Figure A is an actual image of the antibacterial tiles used in Application Example 1, and Figure B is an actual image of the antibacterial tiles used in Comparative Application Example 1. Detailed Implementation
[0050] To better illustrate the purpose, technical solution, and advantages of the present invention, the present invention will be further described below in conjunction with specific embodiments.
[0051] The experimental methods in the following examples, comparative examples, application examples and comparative application examples, unless otherwise specified, are generally performed under conventional conditions in the art or under conditions recommended by the manufacturer; the raw materials and reagents used, unless otherwise specified, are all commercially available from the conventional market.
[0052] The use of reagents in the various embodiments, comparative examples, application examples, and comparative application examples of this invention is as follows:
[0053] Boehmite, P871911, Shanghai Maclean's;
[0054] Sodium polyacrylate, 767418, Shanghai McLean.
[0055] Example 1
[0056] This embodiment provides an antibacterial ceramic glaze, which, by weight, comprises the following components:
[0057] 50 parts bentonite, 15 parts zircon, 10 parts quartz sand, 10 parts calcite, 12 parts copper gadolinium modified alumina, 8 parts glass powder, 8 parts albite, 8 parts dispersant, and 60 parts water.
[0058] The dispersant is sodium stearate and sodium polyacrylate in a weight ratio of 1:2;
[0059] The method for preparing copper-gadolinium modified alumina includes the following steps:
[0060] Copper salt (copper nitrate) and gadolinium salt (gadolinium nitrate) were added to a 10% boehmite solution (solvent water) and mixed. The mixture was stirred for 15 min, and nitric acid was added dropwise until a sol was formed. The mixture was stirred for another 15 min, dried at 60 °C, and calcined at 1100 °C for 4 h to obtain copper-gadolinium modified alumina.
[0061] The ratio of the mass of the pseudoboehmite, the amount of copper in the copper salt (copper nitrate), and the amount of gadolinium in the gadolinium salt (gadolinium nitrate) is 25g:0.08mol:0.015mol.
[0062] The preparation method of the above-mentioned antibacterial ceramic glaze includes: mixing the components to obtain the antibacterial ceramic glaze.
[0063] Examples 1-9 and Comparative Examples 1-4
[0064] Examples 1-9 and Comparative Examples 1-4 provide different antibacterial ceramic glazes. The difference between them and Example 1 lies in the proportions of boehmite mass, copper content in copper salt, and gadolinium content in gadolinium salt during the preparation of copper-gadolinium modified alumina. All other aspects are the same as in Example 1, as shown in the table below:
[0065] Table 1. Mass of boehmite, amount of copper in copper salts, and proportion of gadolinium in gadolinium salts in Examples 1-9 and Comparative Examples 1-4.
[0066]
[0067] Examples 10-13
[0068] Examples 10-13 provide different antibacterial ceramic glazes. The difference between them and Example 1 lies in the calcination temperature during the preparation of copper gadolinium-modified alumina. All other aspects are the same as in Example 1, as shown in the table below:
[0069] Table 2. Calcination temperatures in Examples 1 and 10-13
[0070]
[0071]
[0072] Examples 14-17 and Comparative Example 5
[0073] Examples 14-17 and Comparative Example 5 provide different antibacterial ceramic glazes, differing from Example 1 in the weight percentage of copper gadolinium-modified alumina; otherwise, they are identical to Example 1, as shown in the table below:
[0074] Table 3. Parts by weight of copper-gadolinium modified alumina in Examples 1, 14-17 and Comparative Example 5
[0075] Parts by weight of copper-gadolinium modified alumina Example 1 12 Example 14 10 Example 15 15 Example 16 5 Example 17 20 Comparative Example 5 0
[0076] Examples 18-23
[0077] Examples 18-23 provide different antibacterial ceramic glazes, which differ from Example 1 in the weight ratio of sodium stearate and sodium polyacrylate. All other aspects are the same as in Example 1, as shown in the table below:
[0078] Table 4. Weight ratio of sodium stearate and sodium polyacrylate in Examples 1, 18-23
[0079]
[0080]
[0081] Examples 24-28
[0082] Examples 24-28 provide different antibacterial ceramic glazes, which differ from Example 1 in the weight percentage of the dispersant; otherwise, they are identical to Example 1, as shown in the table below:
[0083] Table 5. Parts by weight of dispersants in Examples 1 and 24-28
[0084] Dispersant weight parts / parts Example 1 8 Example 24 5 Example 25 10 Example 26 3 Example 27 12 Example 28 0
[0085] Example 29
[0086] This embodiment provides an antibacterial ceramic glaze, which, by weight, comprises the following components:
[0087] 40 parts bentonite, 10 parts zircon, 5 parts quartz sand, 5 parts calcite, 5 parts copper gadolinium modified alumina, 5 parts glass powder, 5 parts albite, 3 parts dispersant, and 40 parts water.
[0088] The dispersant is sodium stearate and sodium polyacrylate in a weight ratio of 1:2;
[0089] The method for preparing copper-gadolinium modified alumina includes the following steps:
[0090] Copper salt (copper nitrate) and gadolinium salt (gadolinium nitrate) were added to a 10% boehmite solution (solvent water) and mixed. The mixture was stirred for 15 min, and nitric acid was added dropwise until a sol was formed. The mixture was stirred for another 15 min, dried at 60 °C, and calcined at 1100 °C for 4 h to obtain copper-gadolinium modified alumina.
[0091] The ratio of the mass of the pseudoboehmite, the amount of copper in the copper salt (copper nitrate), and the amount of gadolinium in the gadolinium salt (gadolinium nitrate) is 25g:0.08mol:0.015mol.
[0092] The preparation method of the above-mentioned antibacterial ceramic glaze includes: mixing the components to obtain the antibacterial ceramic glaze.
[0093] Example 30
[0094] This embodiment provides an antibacterial ceramic glaze, which, by weight, comprises the following components:
[0095] 60 parts bentonite, 20 parts zircon, 15 parts quartz sand, 15 parts calcite, 20 parts copper gadolinium modified alumina, 10 parts glass powder, 10 parts albite, 12 parts dispersant, and 70 parts water.
[0096] The dispersant is sodium stearate and sodium polyacrylate in a weight ratio of 1:2;
[0097] The method for preparing copper-gadolinium modified alumina includes the following steps:
[0098] Copper salt (copper nitrate) and gadolinium salt (gadolinium nitrate) were added to a 10% boehmite solution (solvent water) and mixed. The mixture was stirred for 15 min, and nitric acid was added dropwise until a sol was formed. The mixture was stirred for another 15 min, dried at 60 °C, and calcined at 1100 °C for 4 h to obtain copper-gadolinium modified alumina.
[0099] The ratio of the mass of the pseudoboehmite, the amount of copper in the copper salt (copper nitrate), and the amount of gadolinium in the gadolinium salt (gadolinium nitrate) is 25g:0.08mol:0.015mol.
[0100] The preparation method of the above-mentioned antibacterial ceramic glaze includes: mixing the components to obtain the antibacterial ceramic glaze.
[0101] Application Example 1
[0102] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze layer, wherein the raw material of the glaze layer contains the antibacterial ceramic glaze prepared in Example 1;
[0103] The raw material of the green body contains the following components in parts by weight:
[0104] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0105] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0106] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0107] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0108] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0109] Application Example 2
[0110] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze layer, wherein the raw material of the glaze layer contains the antibacterial ceramic glaze prepared in Example 2;
[0111] The raw material of the green body contains the following components in parts by weight:
[0112] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0113] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0114] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0115] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0116] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0117] Application Example 3
[0118] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze layer, wherein the raw material of the glaze layer contains the antibacterial ceramic glaze prepared in Example 3;
[0119] The raw material of the green body contains the following components in parts by weight:
[0120] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0121] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0122] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0123] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0124] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0125] Application Example 4
[0126] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze layer, wherein the raw material of the glaze layer contains the antibacterial ceramic glaze prepared in Example 4;
[0127] The raw material of the green body contains the following components in parts by weight:
[0128] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0129] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0130] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0131] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0132] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0133] Application Example 5
[0134] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze layer, wherein the raw material of the glaze layer contains the antibacterial ceramic glaze prepared in Example 5;
[0135] The raw material of the green body contains the following components in parts by weight:
[0136] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0137] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0138] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0139] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0140] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0141] Application Example 6
[0142] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze layer, wherein the raw material of the glaze layer contains the antibacterial ceramic glaze prepared in Example 6;
[0143] The raw material of the green body contains the following components in parts by weight:
[0144] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0145] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0146] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0147] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0148] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0149] Application Example 7
[0150] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze, wherein the raw material of the glaze contains the antibacterial ceramic glaze prepared in Example 7;
[0151] The raw material of the green body contains the following components in parts by weight:
[0152] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0153] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0154] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0155] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0156] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0157] Application Example 8
[0158] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze layer, wherein the raw material of the glaze layer contains the antibacterial ceramic glaze prepared in Example 8;
[0159] The raw material of the green body contains the following components in parts by weight:
[0160] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0161] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0162] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0163] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0164] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0165] Application Example 9
[0166] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze layer, wherein the raw material of the glaze layer contains the antibacterial ceramic glaze prepared in Example 9;
[0167] The raw material of the green body contains the following components in parts by weight:
[0168] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0169] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0170] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0171] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0172] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0173] Application Example 10
[0174] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze, wherein the raw material of the glaze contains the antibacterial ceramic glaze prepared in Example 10;
[0175] The raw material of the green body contains the following components in parts by weight:
[0176] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0177] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0178] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0179] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0180] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0181] Application Example 11
[0182] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze, wherein the raw material of the glaze contains the antibacterial ceramic glaze prepared in Example 11;
[0183] The raw material of the green body contains the following components in parts by weight:
[0184] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0185] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0186] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0187] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0188] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0189] Application Example 12
[0190] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze, wherein the raw material of the glaze contains the antibacterial ceramic glaze prepared in Example 12;
[0191] The raw material of the green body contains the following components in parts by weight:
[0192] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0193] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0194] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0195] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0196] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0197] Application Example 13
[0198] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze, wherein the raw material of the glaze contains the antibacterial ceramic glaze prepared in Example 13;
[0199] The raw material of the green body contains the following components in parts by weight:
[0200] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0201] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0202] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0203] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0204] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0205] Application Example 14
[0206] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze, wherein the raw material of the glaze contains the antibacterial ceramic glaze prepared in Example 14;
[0207] The raw material of the green body contains the following components in parts by weight:
[0208] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0209] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0210] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0211] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0212] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0213] Application Example 15
[0214] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze, wherein the raw material of the glaze contains the antibacterial ceramic glaze prepared in Example 15;
[0215] The raw material of the green body contains the following components in parts by weight:
[0216] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0217] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0218] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0219] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0220] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0221] Application Example 16
[0222] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze, wherein the raw material of the glaze contains the antibacterial ceramic glaze prepared in Example 16;
[0223] The raw material of the green body contains the following components in parts by weight:
[0224] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0225] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0226] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0227] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0228] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0229] Application Example 17
[0230] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze, wherein the raw material of the glaze contains the antibacterial ceramic glaze prepared in Example 17;
[0231] The raw material of the green body contains the following components in parts by weight:
[0232] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0233] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0234] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0235] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0236] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0237] Application Example 18
[0238] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze, wherein the raw material of the glaze contains the antibacterial ceramic glaze prepared in Example 18;
[0239] The raw material of the green body contains the following components in parts by weight:
[0240] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0241] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0242] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0243] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0244] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0245] Application Example 19
[0246] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze, wherein the raw material of the glaze contains the antibacterial ceramic glaze prepared in Example 19;
[0247] The raw material of the green body contains the following components in parts by weight:
[0248] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0249] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0250] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0251] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0252] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0253] Application Example 20
[0254] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze, wherein the raw material of the glaze contains the antibacterial ceramic glaze prepared in Example 20;
[0255] The raw material of the green body contains the following components in parts by weight:
[0256] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0257] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0258] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0259] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0260] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0261] Application Example 21
[0262] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze, wherein the raw material of the glaze contains the antibacterial ceramic glaze prepared in Example 21;
[0263] The raw material of the green body contains the following components in parts by weight:
[0264] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0265] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0266] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0267] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0268] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0269] Application Example 22
[0270] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze, wherein the raw material of the glaze contains the antibacterial ceramic glaze prepared in Example 22;
[0271] The raw material of the green body contains the following components in parts by weight:
[0272] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0273] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0274] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0275] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0276] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0277] Application Example 23
[0278] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze, wherein the raw material of the glaze contains the antibacterial ceramic glaze prepared in Example 23;
[0279] The raw material of the green body contains the following components in parts by weight:
[0280] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0281] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0282] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0283] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0284] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0285] Application Example 24
[0286] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze, wherein the raw material of the glaze contains the antibacterial ceramic glaze prepared in Example 24;
[0287] The raw material of the green body contains the following components in parts by weight:
[0288] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0289] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0290] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0291] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0292] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0293] Application Example 25
[0294] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze, wherein the raw material of the glaze contains the antibacterial ceramic glaze prepared in Example 25;
[0295] The raw material of the green body contains the following components in parts by weight:
[0296] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0297] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0298] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0299] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0300] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0301] Application Example 26
[0302] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze, wherein the raw material of the glaze contains the antibacterial ceramic glaze prepared in Example 26;
[0303] The raw material of the green body contains the following components in parts by weight:
[0304] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0305] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0306] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0307] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0308] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0309] Application Example 27
[0310] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze, wherein the raw material of the glaze contains the antibacterial ceramic glaze prepared in Example 27;
[0311] The raw material of the green body contains the following components in parts by weight:
[0312] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0313] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0314] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0315] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0316] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0317] Application Example 28
[0318] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze, wherein the raw material of the glaze contains the antibacterial ceramic glaze prepared in Example 28;
[0319] The raw material of the green body contains the following components in parts by weight:
[0320] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0321] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0322] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0323] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0324] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0325] Application Example 29
[0326] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze, wherein the raw material of the glaze contains the antibacterial ceramic glaze prepared in Example 29;
[0327] The raw material of the green body contains the following components in parts by weight:
[0328] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0329] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0330] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0331] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0332] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0333] Application Example 30
[0334] This application example provides an antibacterial ceramic tile, comprising a bisque and a glaze, wherein the raw material of the glaze contains the antibacterial ceramic glaze prepared in Example 30;
[0335] The raw material of the green body contains the following components in parts by weight:
[0336] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0337] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0338] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0339] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0340] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0341] Comparative Application Example 1
[0342] This comparative application example provides an antibacterial ceramic tile, comprising a bisque and a glaze layer, wherein the raw material of the glaze layer contains the antibacterial ceramic glaze prepared in Comparative Example 1;
[0343] The raw material of the green body contains the following components in parts by weight:
[0344] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0345] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0346] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0347] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0348] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0349] Comparative Application Example 2
[0350] This comparative application example provides an antibacterial ceramic tile, comprising a bisque and a glaze layer, wherein the raw material of the glaze layer contains the antibacterial ceramic glaze prepared in Comparative Example 2;
[0351] The raw material of the green body contains the following components in parts by weight:
[0352] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0353] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0354] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0355] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0356] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0357] Comparative Application Example 3
[0358] This comparative application example provides an antibacterial ceramic tile, comprising a bisque and a glaze layer, wherein the raw material of the glaze layer contains the antibacterial ceramic glaze prepared in Comparative Example 3;
[0359] The raw material of the green body contains the following components in parts by weight:
[0360] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0361] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0362] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0363] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0364] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0365] Comparative Application Example 4
[0366] This comparative application example provides an antibacterial ceramic tile, comprising a bisque and a glaze layer, wherein the raw material of the glaze layer contains the antibacterial ceramic glaze prepared in Comparative Example 4;
[0367] The raw material of the green body contains the following components in parts by weight:
[0368] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0369] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0370] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0371] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0372] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0373] Comparative Application Example 5
[0374] This comparative application example provides an antibacterial ceramic tile, comprising a bisque and a glaze layer, wherein the raw material of the glaze layer contains the antibacterial ceramic glaze prepared in Comparative Example 5;
[0375] The raw material of the green body contains the following components in parts by weight:
[0376] 35 parts kaolin, 30 parts quartz sand, 10 parts wollastonite, and 5 parts cordierite;
[0377] The preparation method of the above-mentioned antibacterial ceramic tiles includes the following steps:
[0378] S1. The raw material of the green body is wet ball-milled into a slurry, dried, and pressed into shape to obtain the green body of the green body;
[0379] S2. Spray the raw material of the glaze layer onto the unglazed green body, dry it at 80℃, and sinter it at 1300℃ for 6 hours to obtain antibacterial ceramic tiles;
[0380] Each square centimeter of the green body surface contains 3.0g of antibacterial ceramic glaze.
[0381] Performance testing
[0382] Performance tests were conducted on the tiles in each application example and the comparative application example, as detailed below:
[0383] 1. Antibacterial performance test:
[0384] According to Appendix A, "Test Methods for Antibacterial Properties," of standard JC / T 897-2014 "Antibacterial Properties of Antibacterial Ceramic Products," the antibacterial properties of antibacterial ceramic tiles in each application example and comparative application example were tested. Staphylococcus aureus was used as the test bacteria, and the concentration of the bacterial solution used in the test was 2.0 × 10⁻⁶. 4 With a CFU / mL concentration and a volume of 0.3 mL, the antibacterial ceramic tile of Application Example 5 (without added copper gadolinium modified alumina) was used as a blank control sample. The antibacterial rate (%) of the antibacterial ceramic tiles in each application example and the control application example was recorded and calculated.
[0385] The higher the antibacterial rate, the better the antibacterial performance of the antibacterial tile;
[0386] 2. Acid corrosion resistance test:
[0387] Referring to GB 3810.13-2006 "Test Methods for Ceramic Tiles - Part 13: Determination of Chemical Resistance", a 0.18% hydrochloric acid solution (high concentration) was used as the water-soluble test solution to conduct acid corrosion resistance tests on antibacterial ceramic tiles in various application examples and comparative application examples, and the results were rated. GHA grade indicates no visible change, GHB grade indicates significant surface change, and GHC grade indicates partial or complete damage to the original surface. Furthermore, since a high-concentration test solution was used, GHA and GHB grade products are considered qualified products.
[0388] 3. Alkali corrosion resistance test:
[0389] Referring to GB 3810.13-2006 "Test Methods for Ceramic Tiles - Part 13: Determination of Chemical Corrosion Resistance", 100 g / L potassium hydroxide solution (high concentration) was used as the water-soluble test solution to conduct alkali corrosion resistance tests on antibacterial ceramic tiles in various application examples and comparative application examples, and the tiles were rated. GHA grade indicates no visible change, GHB grade indicates significant surface change, and GHC grade indicates partial or complete damage to the original surface. Furthermore, since a high-concentration test solution was used, GHA and GHB grade products are considered qualified products.
[0390] The experimental results are shown in the table below:
[0391] Table 6. Performance test results of tiles in various application examples and comparative application examples.
[0392]
[0393]
[0394] Figure 1The figures show actual images of the antibacterial tiles used in Application Example 1 and Comparative Application Example 1. In the figures, Figure A is an actual image of the antibacterial tiles used in Application Example 1, and Figure B is an actual image of the antibacterial tiles used in Comparative Application Example 1.
[0395] from Figure 1 As shown in Table 6, this invention regulates the amount and distribution of copper and gadolinium elements in copper-gadolinium modified alumina by using specific proportions of boehmite, copper salt, and gadolinium salt. This not only stimulates and promotes the alumina to fully exert its antibacterial effect, but also improves the structural stability and strength of copper-gadolinium modified alumina, thereby achieving the goal of improving the antibacterial, acid corrosion resistance, and alkali corrosion resistance of the ceramic tiles prepared using it.
[0396] Furthermore, as can be seen from Examples 1 and 10-13, the present invention can control the structure, stability, and strength of copper gadolinium modified alumina by adjusting the calcination temperature, thereby further improving the antibacterial, acid corrosion resistance, and alkali corrosion resistance of ceramic tiles.
[0397] As can be seen from Examples 1 and 18-23, the present invention can promote the dispersion of copper gadolinium modified alumina in antibacterial ceramic glaze by selecting specific dispersants, thereby helping to further improve the antibacterial, acid corrosion resistance and alkali corrosion resistance of ceramic tiles.
[0398] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.
Claims
1. A copper-gadolinium modified alumina, characterized in that, It is prepared by mixing boehmite, copper salt and gadolinium salt, adding acid to form a gel, and then calcining. The ratio of the mass of the pseudoboehmite, the amount of copper in the copper salt, and the amount of gadolinium in the gadolinium salt is 25g:(0.01-0.15)mol:(0.001-0.030)mol.
2. The copper-gadolinium modified alumina as described in claim 1, characterized in that, Includes at least one of the following (1)-(6): (1) The ratio of the mass of the pseudoboehmite, the amount of copper in the copper salt, and the amount of gadolinium in the gadolinium salt is 25g:(0.04-0.12)mol:(0.005-0.025)mol; (2) The calcination temperature is 600-1300℃; (3) The copper salt is at least one of copper nitrate and copper chloride; (4) The gadolinium salt is at least one of gadolinium nitrate and gadolinium chloride; (5) The acid is at least one of nitric acid and hydrochloric acid; (6) The mixing refers to adding copper salt and gadolinium salt to the pseudoboehmite solution for mixing.
3. The copper-gadolinium modified alumina as described in claim 2, characterized in that, The calcination temperature is 800-1200℃.
4. The application of the copper-gadolinium modified alumina according to any one of claims 1-3 in antibacterial applications.
5. An antibacterial ceramic glaze, characterized in that, Calculated by weight, it includes the following components: 40-60 parts bentonite, 10-20 parts zircon, 5-15 parts quartz sand, 5-15 parts calcite, 5-20 parts copper gadolinium modified alumina as described in any one of claims 1-3, 5-10 parts glass powder, 5-10 parts albite, 0-12 parts dispersant, and 40-70 parts water.
6. The antibacterial ceramic glaze as described in claim 5, characterized in that, Includes at least one of the following (1)-(3): (1) The weight of the copper gadolinium modified alumina is 10-15 parts; (2) The dispersant is sodium stearate and sodium polyacrylate in a weight ratio of 1:(0.5-4); (3) The dispersant is 3-12 parts by weight.
7. The antibacterial ceramic glaze as described in claim 6, characterized in that, Includes at least one of the following (1)-(2): (1) The dispersant is sodium stearate and sodium polyacrylate in a weight ratio of 1:(1-3); (2) The dispersant is 5-10 parts by weight.
8. An antibacterial ceramic tile, characterized in that, It includes a raw body and a glaze layer, wherein the raw material of the glaze layer contains the antibacterial ceramic glaze as described in any one of claims 5-7.
9. The antibacterial ceramic tile as described in claim 8, characterized in that, The raw materials for the green body include kaolin, quartz sand, wollastonite, and cordierite.
10. A method for preparing an antibacterial ceramic tile according to any one of claims 8-9, characterized in that, Includes the following steps: S1. Mix the raw materials of the green blank, press them into shape, and obtain the green blank; S2. The raw material for covering the glaze layer on the unglazed green body is sintered to obtain antibacterial ceramic tiles.