CN114736037A - Rare earth phosphate modified bactericidal antiviral ceramic tile and preparation method thereof - Google Patents
Rare earth phosphate modified bactericidal antiviral ceramic tile and preparation method thereof Download PDFInfo
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- CN114736037A CN114736037A CN202210649352.4A CN202210649352A CN114736037A CN 114736037 A CN114736037 A CN 114736037A CN 202210649352 A CN202210649352 A CN 202210649352A CN 114736037 A CN114736037 A CN 114736037A
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5022—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with vitreous materials
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
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- C03C2204/00—Glasses, glazes or enamels with special properties
- C03C2204/02—Antibacterial glass, glaze or enamel
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Abstract
The invention relates to the field of ceramic tiles, in particular to a rare earth phosphate modified bactericidal antiviral ceramic tile and a preparation method thereof. The application provides a rare earth phosphate modified sterilization antiviral ceramic tile, which comprises the following raw materials in percentage by weight: 0.5-5% of rare earth phosphate composition, 73.8-79% of basic glaze, and the rare earth phosphate composition comprises the following raw materials in percentage by weight: 0.1-2.3% of erbium phosphate aluminum compound, 0.1-0.6% of sodium tripolyphosphate, 0.2-0.5% of titanium dioxide and 0.1-1.6% of sodium metaphosphate, and is prepared by preparing a rare earth phosphate composition, preparing a basic glaze material, preparing a mixed glaze material, ball milling, glazing, sintering, polishing and curing. According to the bactericidal and antiviral ceramic tile prepared by the invention, the glaze layer is modified by rare earth phosphate, and the obtained glaze layer has bactericidal and antiviral functions and simultaneously improves the wear resistance of the ceramic tile.
Description
Technical Field
The invention relates to the field of ceramic tiles, in particular to a rare earth phosphate modified bactericidal antiviral ceramic tile and a preparation method thereof.
Background
The ceramic tile is used as an essential decorative material for beautiful living homes, has a decorative function, and can enable people to enjoy warm and quiet space feeling, when people are in the body and demand for physical and mental health is in force, the situation that a healthy and sanitary living environment is given is important at present, and the blank can be filled by the appearance of the sterilizing and antiviral ceramic tile.
The invention patent CN110759642A discloses a rare earth antibacterial ceramic glaze, which mainly utilizes zinc oxide to activate the antibacterial activity of rare earth ions in the ceramic field, zinc ions have antibacterial property, the antibacterial and antiviral functions of rare earth ions are not described, and simultaneously, the problems of unstable glaze color development, reduced glaze layer abrasion resistance and the like caused by adding a large amount of zinc oxide are solved.
Rare earth salts, as a safe and reliable broad-spectrum antimicrobial agent, are easily used in a wide variety of fields, such as: the invention relates to the fields of textile clothing, daily chemicals, paint and the like, but the rare earth phosphate as a ceramic high-temperature antibacterial agent is not reported, and the technical problem to be solved is how to add the rare earth phosphate modified bactericidal and antiviral nano material into a glaze layer and apply the material on the surface of a blank for sintering so as to enable a ceramic tile to have bactericidal and antiviral functions.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the rare earth phosphate modified bactericidal antiviral ceramic tile, which has the advantages that the glaze layer has bactericidal and antiviral functions and certain improvement effect on the wear resistance by adding the rare earth phosphate composition into the existing glaze; the second purpose of the invention is to provide a preparation method of the rare earth phosphate modified sterilization and antivirus ceramic tile, the prepared ceramic tile has high temperature resistance up to 1300 ℃, the application range of the ceramic tile is expanded, and the preparation method is simple, the process is easy to operate, and the ceramic tile has wide market prospect.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the rare earth phosphate modified bactericidal antiviral ceramic tile comprises a glaze layer, wherein the glaze layer comprises the following raw materials in percentage by weight:
0.5-5% of rare earth phosphate composition
73.8 to 79 percent of basic glaze;
the rare earth phosphate composition comprises the following raw materials in percentage by weight:
erbium-aluminum phosphate compound 0.1-2.3%
Sodium tripolyphosphate 0.1-0.6%
Titanium dioxide 0.2-0.5%
0.1 to 1.6 percent of sodium metaphosphate;
further, the chemical components of the basic glaze comprise, by weight: al (Al)2O3:20-24%；Fe2O3:0.06-0.2%；CaO:6.0-8.0%；MgO:3.2-4.8%；K2O:1.0-4.0%；Na2O:1.0-3.0%；TiO2:0.05-0.15%；BaO:4.0-10.0%；ZnO:1.5-2.5%；MnO＜0.01%；P2O5＜0.03%；SO3＜0.014%；ZrO2＜0.02%、SrO＜0.03%，SiO2And (4) the balance.
In the invention, the erbium ions and Ca in the erbium aluminum phosphate compound2+The radius is similar, the membrane easily penetrates through cell membranes, and the membrane can form a complexing effect with O, S, N and other groups in cell walls, cell membranes, enzymes, proteins, DNA and RNA, so that the brittleness of red blood cells is damaged, the breeding of microorganisms can be inhibited, a strong sterilization effect is achieved, and erbium ions are sintered in a glaze layer and cannot be dissolved out, so that the sterilization effect can be continuously exerted for a long time.
A preparation method of a rare earth phosphate modified sterilization and antivirus ceramic tile comprises the following steps:
s1. preparation of rare earth phosphate composition
Adding erbium nitrate and aluminum dihydrogen phosphate into a reaction kettle, adding water as a solvent, a reducing agent and a nucleophilic dispersant, and reacting for 4 hours at 80-90 ℃; after the reaction is finished, cooling to room temperature and filtering; after drying, adding corresponding sodium tripolyphosphate, titanium dioxide and sodium metaphosphate according to the weight percentage, and uniformly mixing to obtain solid powder of the rare earth phosphate composition;
s2, preparing mixed glaze and ball milling
Preparing the basic glaze and the rare earth phosphate composition according to the weight percentage; adding the rare earth phosphate composition and a proper amount of water into the basic glaze to obtain mixed glaze; performing ball milling treatment on the mixed glaze;
s3, glazing
Directly glazing the surface of the blank by using the glaze ball-milled in the step S2, wherein the glazing mode is to print the mixed glaze on the surface of the blank in a screen printing mode;
s4, sintering
Sintering the blank after glazing in a kiln at the sintering temperature of 1200-1250 ℃ for 70-85min to obtain a semi-finished product;
s5, polishing
Polishing the semi-finished product on a polishing machine, and ensuring the luminosity to be more than 60 ℃ after polishing;
s6, curing
And carrying out photometric setting and curing on the polished semi-finished product at the temperature of 250-280 ℃ to obtain the finished product of the ceramic tile.
Further, in step S1, the erbium nitrate and the aluminum dihydrogen phosphate are fed in a molar ratio of erbium nitrate to aluminum dihydrogen phosphate =1: 1.1;
further, in step S1, the reducing agent and the nucleophilic dispersant are fed according to a weight ratio of erbium nitrate to the reducing agent to the nucleophilic dispersant =1:0.02-0.03: 0.1-0.2;
further, in step S1, the reducing agent is isopropanol;
further, in step S1, the nucleophilic dispersant is cyclohexylamine;
further, in step S2, the ball milling process includes: 600g of high-alumina ball mill (100 g of ball mill with the diameter of 3-5mm, 180g of ball mill with the diameter of 5-10mm and 320g of ball mill with the diameter of 10-15 mm) is used for mixing and ball milling for 30-50 min.
Further, inIn step S2, the mesh number of the silk screen is 140 meshes, the glazing specific gravity is 1.30-1.42, each tile is printed twice, and the printing glazing amount each time is 320g/m2(ii) a The fineness standard of the protective glaze layer vibrating screen is 180 meshes, and the screen residue is 25-32 g;
the beneficial effects of the invention are:
1. the invention is different from antibacterial agents containing silver ions, zinc ions and copper ions, and the like essentially, the antibacterial glaze has very obvious sterilization and antiviral functions, especially solves the problems of unstable color development of the glaze surface, reduced wear resistance of the glaze layer and the like, and has the sterilization and antiviral functions and certain improvement effect on the wear resistance by modifying the glaze layer with rare earth phosphate;
2. the process can play a good role in sterilizing and resisting viruses by only adding a small amount of modified rare earth phosphate under the condition of not changing the normal firing condition of the ceramic tile, and the prior art can play a role in slowly releasing antibacterial activity by adding two or more kinds of rare earth metal oxides and belongs to material consumption type antibacterial; the rare earth phosphate of the invention not only improves the stability and durability of the antibacterial and antiviral property of the product, but also realizes the easy operation of the process.
Detailed Description
The present invention will be further described with reference to the following examples for facilitating understanding of those skilled in the art, and the description of the embodiments is not intended to limit the present invention.
In the present invention:
the basic glaze is prepared by selecting the existing raw materials, and the following requirements are met by chemical components in percentage by weight: al (aluminum)2O3:20-24%；Fe2O3:0.06-0.2%；CaO:6.0-8.0%；MgO:3.2-4.8%；K2O:1.0-4.0%；Na2O:1.0-3.0%；TiO2:0.05-0.15%；BaO:4.0-10.0%；ZnO:1.5-2.5%；MnO＜0.01%；P2O5＜0.03%；SO3＜0.014%；ZrO2＜0.02%、SrO＜0.03%，SiO2And (4) the balance.
Example 1
The rare earth phosphate modified bactericidal antiviral ceramic tile comprises a glaze layer, wherein the glaze layer comprises the following raw materials in percentage by weight:
0.5 percent of rare earth phosphate composition
73.8 percent of basic glaze;
the rare earth phosphate composition comprises the following raw materials in percentage by weight:
erbium-aluminum phosphate compound 0.1%
Sodium tripolyphosphate 0.1%
Titanium dioxide 0.2%
0.1% of sodium metaphosphate;
the preparation method of the ceramic tile comprises the following steps:
s1. preparation of rare earth phosphate composition
Adding erbium nitrate and aluminum dihydrogen phosphate into a reaction kettle (feeding is carried out according to a molar ratio of erbium nitrate to aluminum dihydrogen phosphate =1: 1.1), adding isopropanol (the feeding amount is 0.02 times of the weight of erbium nitrate) and cyclohexylamine (the feeding amount is 0.1 times of the weight of erbium nitrate) by taking water as a solvent (the feeding amount is 5 times of the weight of erbium nitrate), and reacting for 4 hours at 80 ℃; after the reaction is finished, cooling to room temperature, filtering, drying, adding corresponding sodium tripolyphosphate, titanium dioxide and sodium metaphosphate according to weight percentage, and uniformly mixing to obtain solid powder of the rare earth phosphate composition;
s2, preparing mixed glaze and ball milling
Preparing the basic glaze and the rare earth phosphate composition according to the weight percentage; adding the rare earth phosphate composition and a proper amount of water into the basic glaze to obtain mixed glaze; performing ball milling treatment on the mixed glaze;
the ball milling treatment process comprises the following steps: 600g of high-alumina ball mill (100 g of ball mill with the diameter of 3-5mm, 180g of ball mill with the diameter of 5-10mm and 320g of ball mill with the diameter of 10-15 mm) is used for mixing and ball milling for 30 min.
S3, glazing
Glazing the glaze ball-milled in the step S2 directly on the surface of the blank (without glazing), wherein the glazing mode is to print the mixed glaze on the surface of the blank in a screen printing mode; the mesh number of the silk screen is 100 meshes, and the glazing ratioThe weight is 1.30, each tile is printed twice, and the printing glazing amount of each time is 210g/m2(ii) a The fineness standard of a vibrating screen of the protective glaze layer is 180 meshes, and the screen residue is 25-32 g;
s4, sintering
Sintering the blank after glazing in a kiln at 1200 ℃ for 70min to obtain a semi-finished product;
s5, polishing
Polishing the semi-finished product on a polishing machine, wherein the luminosity of the polished semi-finished product is 60-65;
s6, curing
And carrying out photometric setting and curing on the polished semi-finished product at 250 ℃ to obtain the finished product of the ceramic tile.
Example 2
The rare earth phosphate modified bactericidal antiviral ceramic tile comprises a glaze layer, wherein the glaze layer comprises the following raw materials in percentage by weight:
rare earth phosphate composition 5%
79% of base glaze;
the rare earth phosphate composition comprises the following raw materials in percentage by weight:
2.3 percent of erbium-aluminum phosphate compound
Sodium tripolyphosphate 0.6%
0.5 percent of titanium dioxide
1.6 percent of sodium metaphosphate;
the preparation method of the ceramic tile comprises the following steps:
s1. preparation of rare earth phosphate composition
Adding erbium nitrate and aluminum dihydrogen phosphate into a reaction kettle (feeding is carried out according to a molar ratio of erbium nitrate to aluminum dihydrogen phosphate =1: 1.1), adding isopropanol (the feeding amount is 0.03 times of the weight of erbium nitrate) and cyclohexylamine (the feeding amount is 0.2 times of the weight of erbium nitrate) by taking water as a solvent (the feeding amount is 5 times of the weight of erbium nitrate), and reacting for 4 hours at 90 ℃; after the reaction is finished, cooling to room temperature, filtering, drying, adding corresponding sodium tripolyphosphate, titanium dioxide and sodium metaphosphate according to weight percentage, and uniformly mixing to obtain solid powder of the rare earth phosphate composition;
s2, preparing mixed glaze and ball milling
Preparing the basic glaze and the rare earth phosphate composition according to the weight percentage; adding the rare earth phosphate composition and a proper amount of water into the basic glaze to obtain mixed glaze; performing ball milling treatment on the mixed glaze; the ball milling treatment process comprises the following steps: 600g of high-alumina ball mill (100 g of ball mill with the diameter of 3-5mm, 180g of ball mill with the diameter of 5-10mm and 320g of ball mill with the diameter of 10-15 mm) is used for mixing and ball milling for 50 min.
S3, glazing
Glazing the glaze ball-milled in the step S2 directly on the surface of the blank (without glazing), wherein the glazing mode is to print the mixed glaze on the surface of the blank in a screen printing mode; the mesh number of the silk screen is 140 meshes, the glazing specific gravity is 1.42, each tile is printed twice, and the printing glazing amount of each time is 320g/m2(ii) a The fineness standard of the protective glaze layer vibrating screen is 180 meshes, and the screen residue requirement is 25-32 g;
s4, sintering
Sintering the blank after glazing in a kiln at 1250 ℃ for 85min to obtain a semi-finished product;
s5, polishing
Polishing the semi-finished product on a polishing machine, and ensuring the luminosity to be 65-70 ℃ after polishing;
s6, curing
And carrying out photometric setting and curing on the polished semi-finished product at 280 ℃ to obtain the finished product of the ceramic tile.
Example 3
The rare earth phosphate modified bactericidal antiviral ceramic tile comprises a glaze layer, wherein the glaze layer comprises the following raw materials in percentage by weight:
2.5 percent of rare earth phosphate composition
75% of basic glaze;
the rare earth phosphate composition comprises the following raw materials in percentage by weight:
erbium-aluminum phosphate compound 1.5%
Sodium tripolyphosphate 0.2%
Titanium dioxide 0.3%
0.5 percent of sodium metaphosphate;
the preparation method of the ceramic tile comprises the following steps:
s1. preparation of rare earth phosphate composition
Adding erbium nitrate and aluminum dihydrogen phosphate into a reaction kettle (feeding is carried out according to a molar ratio of erbium nitrate to aluminum dihydrogen phosphate =1: 1.1), adding isopropanol (the feeding amount is 0.025 times of the weight of erbium nitrate) and cyclohexylamine (the feeding amount is 0.15 times of the weight of erbium nitrate) by taking water as a solvent (the feeding amount is 5 times of the weight of erbium nitrate), and reacting for 4 hours at 85 ℃; after the reaction is finished, cooling to room temperature, filtering, drying, adding corresponding sodium tripolyphosphate, titanium dioxide and sodium metaphosphate according to weight percentage, and uniformly mixing to obtain solid powder of the rare earth phosphate composition;
s2, preparing mixed glaze and ball milling
Preparing the basic glaze and the rare earth phosphate composition according to the weight percentage; adding the rare earth phosphate composition and a proper amount of water into the basic glaze to obtain mixed glaze; performing ball milling treatment on the mixed glaze;
the ball milling treatment process comprises the following steps: 600g of high-alumina ball mill (100 g of ball mill with the diameter of 3-5mm, 180g of ball mill with the diameter of 5-10mm and 320g of ball mill with the diameter of 10-15 mm) is used for mixing and ball milling for 40 min.
S3, glazing
Glazing the glaze ball-milled in the step S2 directly on the surface of the blank (without glazing), wherein the glazing mode is to print the mixed glaze on the surface of the blank in a screen printing mode; the mesh number of the silk screen is 120 meshes, the glazing specific gravity is 1.35, each tile is printed twice, and the printing glazing amount of each time is 260g/m2(ii) a The fineness standard of a vibrating screen of the protective glaze layer is 180 meshes, and the screen residue is 25-32 g;
s4, sintering
Sintering the blank after glazing in a kiln at 1230 ℃, wherein the firing time is 80min, and obtaining a semi-finished product;
s5, polishing
Polishing the semi-finished product on a polishing machine, and ensuring that the luminosity is 65-70 ℃ after polishing;
s6, curing
And carrying out photometric setting and curing on the polished semi-finished product at 260 ℃ to obtain the finished product of the ceramic tile.
Example 4
The rare earth phosphate modified bactericidal antiviral ceramic tile comprises a glaze layer, wherein the glaze layer comprises the following raw materials in percentage by weight:
rare earth phosphate composition 0.6%
77% of base glaze;
the rare earth phosphate composition comprises the following raw materials in percentage by weight:
erbium aluminum phosphate compound 0.2%
Sodium tripolyphosphate 0.1%
Titanium dioxide 0.2%
0.1% of sodium metaphosphate;
the preparation method of the ceramic tile comprises the following steps:
s1. preparation of rare earth phosphate composition
Adding erbium nitrate and aluminum dihydrogen phosphate into a reaction kettle (feeding is carried out according to a molar ratio of erbium nitrate to aluminum dihydrogen phosphate =1: 1.1), adding isopropanol (the feeding amount is 0.02 times of the weight of erbium nitrate) and cyclohexylamine (the feeding amount is 0.2 times of the weight of erbium nitrate) by taking water as a solvent (the feeding amount is 5 times of the weight of erbium nitrate), and reacting for 4 hours at 81 ℃; after the reaction is finished, cooling to room temperature, filtering, drying, adding corresponding sodium tripolyphosphate, titanium dioxide and sodium metaphosphate according to weight percentage, and uniformly mixing to obtain solid powder of the rare earth phosphate composition;
s2, preparing mixed glaze and ball milling
Preparing the basic glaze and the rare earth phosphate composition according to the weight percentage; adding the rare earth phosphate composition and a proper amount of water into the basic glaze to obtain mixed glaze; performing ball milling treatment on the mixed glaze;
the ball milling treatment process comprises the following steps: 600g of high-alumina ball mill (100 g of ball mill with the diameter of 3-5mm, 180g of ball mill with the diameter of 5-10mm, 320g of ball mill with the diameter of 10-15 mm) is used for mixing and ball milling for 45 min.
S3, glazing
Directly ball-milling the glaze material obtained in the step S2Glazing on the surface of the blank (not glazed), wherein the glazing mode is to print mixed glaze on the surface of the blank in a screen printing mode; the mesh number of the silk screen is 130 meshes, the glazing specific gravity is 1.39, each tile is printed twice, and the printing glazing amount of each time is 300g/m2(ii) a The fineness standard of the protective glaze layer vibrating screen is 180 meshes, and the screen residue requirement is 25-32 g;
s4, sintering
Sintering the blank after glazing in a kiln at 1210 ℃ for 80min to obtain a semi-finished product;
s5, polishing
Polishing the semi-finished product on a polishing machine, and ensuring that the luminosity is 70-75 ℃ after polishing;
s6, curing
And carrying out photometric setting and curing on the polished semi-finished product at 270 ℃ to obtain the finished product of the ceramic tile.
Comparative example 1
The rare earth phosphate composition was not added, and the remaining conditions were the same as in example 1;
comparative example 2
The erbium aluminum phosphate compound is not added, and the other conditions are consistent with those of the example 1;
performance test
1. The tiles obtained in examples 1 to 4 and in comparative examples 1 to 2 were subjected to an antibacterial test (using standard JC/T897-2014) and an antiviral test (using standard ISO 21702 for H1N 1).
TABLE 1
| Group of | Antibacterial ratio of Escherichia coli (%) | Antibacterial ratio (%) of Staphylococcus aureus | Antiviral rate of H1N1 |
| Example 1 | 99.9 | 99.9 | 95.0 |
| Example 2 | 99.9 | 99.9 | 96.8 |
| Example 3 | 99.9 | 99.9 | 96.1 |
| Example 4 | 99.9 | 99.9 | 95.3 |
| Comparative example 1 | 26.7 | 30.4 | 1.3 |
| Comparative example 2 | 55.8 | 63.5 | 6.9 |
Therefore, the ceramic tile prepared by the invention has the antibacterial rate of 99.9 percent of escherichia coli, 99.9 percent of staphylococcus aureus and more than or equal to 95 percent of H1N1 antiviral rate.
In contrast, comparative example 1, the antibacterial and antiviral functions were greatly reduced without adding the rare earth phosphate composition; the antibacterial rate of escherichia coli is 26.7%, the antibacterial rate of staphylococcus aureus is 30.4%, and the antiviral rate of H1N1 is 1.3%;
comparative example 2, no erbium-aluminum phosphate compound was added, and the antibacterial and antiviral effects were poor with sodium metaphosphate alone, the antibacterial rate of escherichia coli was 55.8%, the antibacterial rate of staphylococcus aureus was 65.3%, and the antiviral rate of H1N1 was 6.9%;
2. the tiles of examples 1 to 4 and of comparative example 1 were subjected to abrasion resistance rating tests, the relative results being reported in table 2 below:
TABLE 2
| Group of | Abrasion resistance (grade) |
| Example 1 | 4 grade (2100 turns) |
| Example 2 | 4 grade (2500 rotation) |
| Example 3 | Grade 4 (1500 rotating) |
| Example 4 | 4 grade (1000 turn) |
| Comparative example 1 | Grade 3 (500 turn) |
In the embodiments 1 to 4, by adding the erbium-aluminum phosphate compound, the aluminum ion in the erbium-aluminum phosphate can increase the aluminum-silicon ratio in the glaze layer, so as to improve the wear resistance of the glaze layer, and the wear resistance is improved more remarkably with the increase of the addition amount of Al. Comparative example 1, in contrast, had no erbium aluminium phosphate compound added, and therefore had a relatively low degree of abrasion resistance, grade 3 (500 revolutions).
3. Appearance inspection
Examples 1-4 the color development of the glaze surface of the ceramic tile prepared in example 4 was stable;
the color development of the glaze surface of the ceramic tile prepared in the comparative example 1 is unstable;
the color of the glaze surface of the ceramic tile prepared in the comparative example 2 is stable;
in the process of firing the ceramic tile in the kiln, if the glaze surface is not protected or the glaze material layer does not resist temperature, the color of the ceramic tile which is fired and discharged from the kiln is changed, so that the color development of the glaze surface is unstable, namely, the color difference is not uniform or is color difference.
The above-described embodiments are preferred implementations of the present invention, and the present invention may be implemented in other ways without departing from the spirit of the present invention.
Claims (9)
1. The rare earth phosphate modified bactericidal antiviral ceramic tile is characterized by comprising the following raw materials in percentage by weight:
0.5-5% of rare earth phosphate composition
73.8 to 79 percent of basic glaze
The rare earth phosphate composition comprises the following raw materials in percentage by weight:
erbium-aluminum phosphate compound 0.1-2.3%
Sodium tripolyphosphate 0.1-0.6%
Titanium dioxide 0.2-0.5%
0.1 to 1.6 percent of sodium metaphosphate.
2. The rare earth phosphate modified bactericidal antiviral ceramic tile according to claim 1, wherein the chemical components of the base glaze comprise, by weight:
Al2O3:20-24%；Fe2O3:0.06-0.2%；CaO:6.0-8.0%；MgO:3.2-4.8%；K2O:1.0-4.0%；Na2O:1.0-3.0%；TiO2:0.05-0.15%；BaO:4.0-10.0%；ZnO:1.5-2.5%；MnO＜0.01%；P2O5＜0.03%；SO3＜0.014%；ZrO2＜0.02%、SrO＜0.03%，SiO2and (4) the balance.
3. A process for preparing a rare earth phosphate modified bactericidal antiviral tile as set forth in any one of claims 1-2, comprising the steps of:
s1. preparation of rare earth phosphate composition
Adding erbium nitrate and aluminum dihydrogen phosphate into a reaction kettle, adding water as a solvent, a reducing agent and a nucleophilic dispersant, and reacting for 4 hours at 80-90 ℃; after the reaction is finished, cooling to room temperature and filtering; after drying, adding corresponding sodium tripolyphosphate, titanium dioxide and sodium metaphosphate according to the weight percentage, and uniformly mixing to obtain solid powder of the rare earth phosphate composition;
s2, preparing mixed glaze and ball milling
Preparing the basic glaze and the rare earth phosphate composition according to the weight percentage; adding the rare earth phosphate composition and a proper amount of water into the basic glaze to obtain mixed glaze; performing ball milling treatment on the mixed glaze;
s3, glazing
Directly glazing the surface of the blank by using the glaze ball-milled in the step S2, wherein the glazing mode is to print the mixed glaze on the surface of the blank in a screen printing mode;
s4, sintering
Sintering the blank after glazing in a kiln at the temperature of 1200-1250 ℃ for 70-85min to obtain a semi-finished product;
s5, polishing
Polishing the semi-finished product on a polishing machine, and ensuring the luminosity to be more than 60 ℃ after polishing;
s6, curing
And carrying out photometric setting and curing on the polished semi-finished product at the temperature of 250-280 ℃ to obtain the finished product of the ceramic tile.
4. The method for preparing a rare earth phosphate modified sterilization and antivirus ceramic tile according to claim 3, wherein in step S1, the erbium nitrate and the aluminum dihydrogen phosphate are fed according to a molar ratio of erbium nitrate to aluminum dihydrogen phosphate =1: 1.1.
5. The method for preparing a rare earth phosphate modified bactericidal and antiviral ceramic tile according to claim 3, wherein in step S1, the reducing agent and the nucleophilic dispersant are fed according to a weight ratio of erbium nitrate to the reducing agent to the nucleophilic dispersant =1:0.02-0.03: 0.1-0.2.
6. The method for preparing a ceramic tile with bactericidal and antiviral effects modified by rare earth phosphate as claimed in claim 5, wherein in step S1, the reducing agent is isopropanol.
7. The method for preparing a rare earth phosphate modified bactericidal antiviral tile according to claim 5, wherein in step S1, the nucleophilic dispersant is cyclohexylamine.
8. The method for preparing the rare earth phosphate modified bactericidal antiviral tile according to claim 3, wherein in step S2, the ball milling treatment process comprises: and (3) performing mixed ball milling for 30-50min by using 600g of high-alumina ball mill.
9. The method as claimed in claim 3, wherein in step S3, the mesh number of the silk screen is 100-140 mesh, the glazing specific gravity is 1.30-1.42, each tile is printed twice, and the printing glaze amount is 210-320g/m2(ii) a The fineness standard of the protective glaze layer vibrating screen is 180 meshes, and the screen residue is 25-32 g.
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