CN113387726A - Antibacterial ceramic tile and preparation method thereof - Google Patents
Antibacterial ceramic tile and preparation method thereof Download PDFInfo
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- CN113387726A CN113387726A CN202110940758.3A CN202110940758A CN113387726A CN 113387726 A CN113387726 A CN 113387726A CN 202110940758 A CN202110940758 A CN 202110940758A CN 113387726 A CN113387726 A CN 113387726A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/24—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing ingredients to enhance the sticking of the active ingredients
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B41/51—Metallising, e.g. infiltration of sintered ceramic preforms with molten metal
- C04B41/5116—Ag or Au
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
- C04B41/88—Metals
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2092—Resistance against biological degradation
Abstract
The invention relates to an antibacterial ceramic tile and a preparation method thereof, belonging to the technical field of ceramics. The antibacterial ceramic tile is prepared by filling antibacterial liquid into micropores on the surface of the ceramic tile, wherein the ceramic tile is a polished tile or a glazed tile; the antibacterial liquid comprises an antibacterial agent, a binder, a dispersing agent and water; the antibacterial agent is a nano silver wire. According to the antibacterial ceramic tile, the antibacterial active substance nano silver wires are filled in micropores on the surface of the glazed tile or the polished tile, and the obtained antibacterial tile has a continuous and efficient antibacterial function on the basis of no high-temperature treatment and no influence on the physicochemical property of the surface of the glazed tile.
Description
Technical Field
The invention relates to an antibacterial ceramic tile and a preparation method thereof, belonging to the technical field of ceramics.
Background
The functionalization of the building ceramic becomes one of the main development directions of the domestic building ceramic industry, and the antibacterial performance of the building ceramic has important significance for improving the added value of the product. The ceramic tile is generally applied to the environment of people, dead angles of pollution and bacteria breeding always exist on the surface of the ceramic tile, bacteria are easy to breed in places such as family kitchens, toilets and the like, fine pinholes which cannot be seen by naked eyes exist on the surface of the ceramic tile, and when the ceramic tile is used for a long time, the bacteria are easy to accumulate and breed and even infect, so that the body health is seriously affected. Therefore, it is important to develop an antibacterial ceramic tile.
According to the traditional antibacterial ceramic tile, an antibacterial agent is directly added into glaze, and the ceramic glaze is endowed with an antibacterial function to prepare the antibacterial ceramic tile, and most of the antibacterial agents are silver-series antibacterial agents; for example, Chinese patent with publication number CN110818261A provides an antibacterial ceramic glaze, which is prepared from ceramic glaze, antibacterial agent, suspending agent and debonding agent, wherein the antibacterial agent is a mixture of nano silver-loaded zirconium silicate and nano zinc oxide; for example, chinese patent publication No. CN111517649A provides an antibacterial glaze powder, an antibacterial rock plate and a preparation method thereof, wherein the antibacterial agent in the antibacterial glaze powder is a zirconium phosphate silver-carrying material. However, in the preparation process of the traditional antibacterial ceramic tile added with the silver-based antibacterial agent, as the glaze is treated at high temperature, the main active ingredient nano silver in the silver-based antibacterial agent is easily oxidized to form silver oxide, so that the antibacterial activity of the silver-based antibacterial agent is reduced; in addition, the existing silver-based antibacterial agent exists in the antibacterial ceramic tile mostly in the form of nano silver particles, and the nano silver particles are in a faint yellow color, which may affect the surface pattern effect of the antibacterial ceramic tile.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an antibacterial ceramic tile, which is prepared by filling antibacterial liquid into micropores on the surface of a polished tile or a glazed tile, and because antibacterial active ingredients in the antibacterial liquid can be fixed in the ceramic tile without high-temperature firing of the ceramic tile, the ceramic tile with continuous and efficient antibacterial function is obtained.
In order to achieve the purpose, the invention adopts the technical scheme that: the antibacterial ceramic tile is prepared by filling antibacterial liquid into micropores on the surface of the ceramic tile, and the ceramic tile is a polished tile or a glazed tile; the antibacterial liquid comprises an antibacterial agent, a binder, a dispersing agent and water; the antibacterial agent is a nano silver wire.
Preferably, the average wire diameter of the nano silver wire is 25-40 nm, and the average wire length of the nano silver wire is 25-40 μm.
The nano silver wire is a nano material with the wire diameter within 100nm and the wire length reaching dozens of micrometers or even hundreds of micrometers. The nano silver wire can be used as an antibacterial active substance on the surface of the ceramic tile, and the surface of the ceramic tile is attached with a layer of organic polymer material, so that the nano silver wire is not easily oxidized and can gradually release silver ions, and the antibacterial effect is achieved. The average wire diameter of the silver nanowires is 25-40 nm, the average wire length of the silver nanowires is 25-40 mu m, the length-diameter ratio can reach 1000, and the silver nanowires with large length-diameter ratio can show good flexibility and are beneficial to uniform dispersion of the silver nanowires in micropores on the surface of the ceramic tile. In addition, compared with the low-concentration nano silver particle dispersion liquid, the low-concentration nano silver wire dispersion liquid is light yellow, and is a colorless transparent solution; the nano silver wire can be used for preparing the transparent conductive film, which fully explains that the scheme that the nano silver wire is used as an antibacterial active material to be dispersed in micropores on the surface of a ceramic tile can not influence the originally designed appearance pattern on the surface of the ceramic tile due to the color of the nano silver wire.
As a preferred embodiment of the antibacterial ceramic tile, the antibacterial liquid comprises, by mass, 0.01% -2% of an antibacterial agent, 1% -6% of a binder, 0.01% -2% of a dispersing agent and the balance of water.
As a preferable embodiment of the antibacterial ceramic tile, the adhesive is silica sol, the silica sol contains nano silica, and the average particle size of the nano silica is 5 nm-30 nm. Compared with the nano silver wire, the nano silicon dioxide has smaller size, is not easy to shield the surface active site of the nano silver wire, is beneficial to the release of silver ions, and further does not influence the antibacterial performance of the antibacterial ceramic tile.
As a preferred embodiment of the antibacterial ceramic tile, the dispersant is sodium hexametaphosphate or sodium dodecyl sulfate. The sodium hexametaphosphate and the sodium dodecyl sulfate are ionic surfactants, and the sodium hexametaphosphate and the sodium dodecyl sulfate are used as dispersing agents, so that the nano silver wires are dispersed more uniformly, and a better antibacterial effect is achieved. The dispersion of ionic surfactants on silver nanowires is an electrostatically stable approach, based on the principle that a charged double layer structure is formed on the surface of the silver nanowires. If no dispersing agent is added in the preparation process of the antibacterial agent, the nano silver wires are easy to be wound together due to the large length-diameter ratio of the nano silver wires, so that the uniform dispersibility of the nano silver wires is influenced, and the antibacterial efficiency of the antibacterial agent is further influenced. With the increase of the dispersing agent amount, partial ions are carried on the surface of the nano silver wire to form a double electric layer structure, the nano silver wire cannot be agglomerated together due to the repulsion between charges of the same kind, and the nano silver wire is uniformly dispersed; however, when the amount of the dispersing agent is excessive, the nano silver wire may have a charge deflection phenomenon, and heterogeneous charges may attract each other to induce an agglomeration phenomenon, thereby decreasing the antibacterial efficiency of the antibacterial agent. Therefore, the mass percentage of the dispersant in the antibacterial liquid is controlled to be 0.01-2%.
In addition, the invention also aims to provide a preparation method of the antibacterial ceramic tile, which comprises the following steps:
(1) preparing an antibacterial solution according to a formula;
(2) preparing a ceramic tile according to a conventional process;
(3) and (3) adding polishing liquid and the antibacterial liquid obtained in the step (1) to perform pressurization grinding and polishing treatment on the ceramic tile prepared in the step (2), so as to obtain the antibacterial ceramic tile.
As a preferred embodiment of the preparation method of the present invention, the polishing solution is nano-silica.
As a preferred embodiment of the preparation method of the invention, in the step (3), the amount of the antibacterial liquid is 3-30 mL/m2。
The preparation method comprises the following specific steps (2): preparing according to a conventional ceramic process, and firing at a high temperature of 1160-1190 ℃ to obtain a conventional ceramic tile; then, on a conventional polishing production line, selecting a proper abrasive disc to carry out edging and polishing on the ceramic tile in a circulating water environment, thus obtaining a glazed tile or a polished tile; a large number of micro-pores invisible to naked eyes appear on the surface of the glazed brick or the polished brick treated by the process flow.
As a preferred embodiment of the preparation method of the present invention, in the step (3), the pressure polishing process is as follows: and (3) grinding and polishing the glazed brick or polished brick polished in the step (2) at a high speed by 12 groups of grinding heads under the condition of dropwise adding polishing liquid, preliminarily filling micropores on the surface of the glazed brick or polished brick with nano silicon dioxide in the polishing liquid, then continuously pressurizing and grinding and polishing antibacterial liquid under 4 groups of grinding heads, filling nano silver wires and nano silicon dioxide in the antibacterial liquid into micropores on the surface of the glazed brick or polished brick, and generating a certain high temperature by high-speed rotation of a grinding and polishing sheet so as to be beneficial to forming a cross-linked network structure after the nano silicon dioxide in the polishing liquid and the nano silicon dioxide in the antibacterial liquid are dehydrated, thereby firmly fixing the nano silver wires in the micropores on the surface of the ceramic.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the antibacterial ceramic tile provided by the invention, the antibacterial liquid is subjected to pressure grinding and polishing on the surface of the glazed tile or polished tile, the antibacterial active ingredient nano silver wires in the antibacterial liquid are uniformly filled in micropores on the surface of the glazed tile or polished tile, and the antibacterial activity of the nano silver wires is not influenced by high temperature due to no high-temperature treatment, so that the antibacterial ceramic tile with a high-efficiency antibacterial effect can be prepared by adding a small amount of nano silver wires;
(2) according to the antibacterial ceramic tile provided by the invention, the antibacterial liquid prepared by taking the nano silver wires as the antibacterial active ingredients is colorless transparent liquid, and is pressed, ground and polished in micropores on the surface of the polished tile or the polished tile, so that the pattern of the polished tile or the polished tile is not influenced;
(3) according to the preparation method of the antibacterial ceramic tile, the adhesive silica sol is combined with the antibacterial active substance nano silver wires, so that the antibacterial agent can be continuously and effectively released; on one hand, the silica sol used as the adhesive has smaller particle size and can not completely shield the nano silver wire with the length-diameter ratio of more than 1000, thereby being beneficial to the release of the nano silver wire to silver ions and ensuring the effectiveness of the antibacterial agent; on the other hand, the silica sol and the conventional polishing solution mainly contain silicon dioxide, a stable and compact net structure is formed after dehydration, and the nano silver wires are firmly fixed in the micropores on the surface of the glazed brick or the polished brick, so that the nano silver wires can be continuously and stably present in the micropores on the surface of the glazed brick or the polished brick, and the antibacterial ceramic brick with continuous and efficient antibacterial effect is obtained.
Drawings
FIG. 1 is a schematic view of the distribution of silver nanowires on the surface of the antibacterial glazed tile of the present invention; wherein, 1 is a ceramic tile; 2 is a nano silver wire; 3 is a silica sol layer;
FIG. 2 is a microscopic view of the surface of the ceramic tile at the initial stage of the polishing treatment of the antibacterial polished glazed tile of example 1 of the present invention.
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to the following detailed drawings and examples.
The starting materials used in the following examples are all commercially available unless otherwise specified.
Example 1
The antibacterial glazed brick is prepared by filling antibacterial liquid into micropores on the surface of the glazed brick, and the antibacterial liquid comprises, by mass, 0.1% of nano silver wires (the average value of the wire diameter of the nano silver wires is 30nm, the average value of the wire length is 30 microns), 2% of silica sol (containing nano silicon dioxide with the average value of the particle diameter of 25 nm), 0.1% of sodium dodecyl sulfate and 97.8% of water.
The preparation method of the antibacterial glazed brick comprises the following steps:
(1) preparing an antibacterial solution containing nano silver wires: taking the nano silver wire, the silica sol, the sodium dodecyl sulfate and the water according to the formula, and uniformly mixing the nano silver wire, the silica sol, the sodium dodecyl sulfate and the water to obtain the antibacterial liquid;
(2) preparing the glazed brick according to a conventional process: preparing materials according to a conventional ceramic process, ball milling, slurry treatment, spray drying, aging, press molding, drying, glaze spraying, and firing at 1160 ℃ to obtain a conventional ceramic tile; then, on a conventional polishing production line, selecting a proper grinding disc to carry out edge grinding and polishing on the ceramic tile in a circulating water environment, so as to obtain a glazed tile;
(3) adding a conventional nano silicon dioxide polishing solution and the antibacterial solution (the addition amount is 20 mL/m) in the step (1) in sequence2) And (3) carrying out pressure grinding and polishing treatment on the glazed brick prepared in the step (2) (grinding and polishing at a high speed by 12 groups of grinding heads under the condition of dropwise adding polishing liquid, then continuously carrying out pressure grinding and polishing on an antibacterial liquid under 4 groups of grinding heads, wherein each group of grinding heads comprises 6 grinding discs, and the loading pressure of the grinding heads is controlled to be 0.5 MPa), so that the antibacterial glazed brick can be obtained.
Example 2
The antibacterial glazed brick is prepared by filling antibacterial liquid into micropores on the surface of the glazed brick, and the antibacterial liquid comprises, by mass, 0.01% of nano silver wires (the average value of the wire diameter of the nano silver wires is 25nm, the average value of the wire length is 25 μm), 1% of silica sol (containing nano silicon dioxide with the average value of the particle size of 5 nm), 0.01% of sodium dodecyl sulfate and 98.98% of water.
The preparation method of the antibacterial glazed brick comprises the following steps:
(1) preparing an antibacterial solution containing nano silver wires: taking the nano silver wire, the silica sol, the sodium dodecyl sulfate and the water according to the formula, and uniformly mixing the nano silver wire, the silica sol, the sodium dodecyl sulfate and the water to obtain the antibacterial liquid;
(2) preparing the glazed brick according to a conventional process: preparing materials according to a conventional ceramic process, ball milling, slurry treatment, spray drying, aging, press molding, drying, glaze spraying, and firing at a high temperature of 1190 ℃ to obtain a conventional ceramic tile; then, on a conventional polishing production line, selecting a proper grinding disc to carry out edge grinding and polishing on the ceramic tile in a circulating water environment, so as to obtain a glazed tile;
(3) adding conventional nano silicon dioxide polishing solution and the antibacterial solution (the addition amount is 3 mL/m) in the step (1) in sequence2) Pressurizing the glazed brick prepared in the step (2)And (3) grinding and polishing treatment (grinding and polishing at a high speed by 12 groups of grinding heads under the condition of dropwise adding polishing liquid, then continuously pressurizing and grinding and polishing by antibacterial liquid under 4 groups of grinding heads, wherein each group of grinding heads has 6 grinding discs, and the loading pressure of the grinding heads is controlled to be 0.5 MPa) to obtain the antibacterial polished glazed brick.
Example 3
The antibacterial glazed brick is prepared by filling antibacterial liquid into micropores on the surface of the glazed brick, and the antibacterial liquid comprises, by mass percentage, 2% of nano silver wires (the average value of the wire diameter of the nano silver wires is 40nm, the average value of the wire length is 40 mu m), 6% of silica sol (containing nano silicon dioxide with the average value of the particle diameter of 30 nm), 2% of sodium hexametaphosphate and 90% of water.
(1) Preparing an antibacterial solution containing nano silver wires: taking the nano silver wire, the silica sol, the sodium dodecyl sulfate and the water according to the formula, and uniformly mixing the nano silver wire, the silica sol, the sodium dodecyl sulfate and the water to obtain the antibacterial liquid;
(2) preparing the glazed brick according to a conventional process: preparing materials according to a conventional ceramic process, ball milling, slurry treatment, spray drying, aging, press molding, drying, glaze spraying, and firing at 1180 ℃ to obtain a conventional ceramic tile; then, on a conventional polishing production line, selecting a proper grinding disc to carry out edge grinding and polishing on the ceramic tile in a circulating water environment, so as to obtain a glazed tile;
(3) adding a conventional nano silicon dioxide polishing solution and the antibacterial solution (the addition amount is 30 mL/m) in the step (1) in sequence2) And (3) carrying out pressure grinding and polishing treatment on the glazed brick prepared in the step (2) (grinding and polishing at a high speed by 12 groups of grinding heads under the condition of dropwise adding polishing liquid, then continuously carrying out pressure grinding and polishing on an antibacterial liquid under 4 groups of grinding heads, wherein each group of grinding heads comprises 6 grinding discs, and the loading pressure of the grinding heads is controlled to be 0.5 MPa), so that the antibacterial glazed brick can be obtained.
Comparative example 1
The antibacterial glazed brick is prepared by filling antibacterial liquid into micropores on the surface of the glazed brick, and the antibacterial liquid comprises 0.1% of nano silver wires (the average value of the wire diameter of the nano silver wires is 30nm, the average value of the wire length is 30 mu m), 2% of silica sol (containing nano silicon dioxide with the average value of the particle diameter of 25 nm), 0.005% of sodium dodecyl sulfate and 97.895% of water in percentage by mass.
The preparation method of the antibacterial glazed brick is the same as that of example 1.
Comparative example 2
The antibacterial glazed brick is prepared by filling antibacterial liquid into micropores on the surface of the glazed brick, and the antibacterial liquid comprises 0.1% of nano silver wires (the average value of the wire diameter of the nano silver wires is 30nm, the average value of the wire length is 30 mu m), 0.5% of silica sol (containing nano silicon dioxide with the average value of the particle diameter of 25 nm), 0.1% of sodium hexametaphosphate or sodium dodecyl sulfate and the balance of water in percentage by mass.
The preparation method of the antibacterial glazed brick is the same as that of the example 1.
Comparative example 3
This comparative example is a glazed tile, and the preparation method is the same as example 1 except that an antibacterial solution using a silver nanowire as an antibacterial active substance is not added.
Experimental example 1
In the experimental example, at the initial stage of the antibacterial glazed brick and the polishing treatment thereof described in embodiment 1 of the present invention, a sample is taken and photographed by a microscope, and the surface filling condition of the antibacterial glazed brick with the antibacterial active substance nano silver wire is checked.
Fig. 1 is a schematic view of the distribution of antibacterial active substance nano silver wires on the surface of an antibacterial glazed brick in embodiment 1 of the invention, wherein 1 is a ceramic brick, 2 is a nano silver wire, and 3 is a silica sol layer; the nano silver wires are uniformly filled in the micropores of the antibacterial glazed brick, and the silica sol layer is a network structure layer formed by mutually crosslinking the nano silicon dioxide in the polishing solution and the nano silicon dioxide in the antibacterial solution after dehydration;
fig. 2 is a microscopic photograph of the ceramic tile surface at the initial stage of the polishing treatment of the antibacterial polished glazed tile in embodiment 1 of the present invention, where the initial stage of the polishing treatment is a period after the first group of grinding heads grind and press the ceramic tile surface after the antibacterial liquid is dropped on the ceramic tile surface (after the polishing treatment is completed, the ceramic tile surface is flat and dense), and it can be seen from the photograph that the nano silver lines are filled in the micropores on the ceramic tile surface.
Experimental example 2
This experimental example was conducted to test the antibacterial performance of the polished tiles described in examples 1, 2, 3 and comparative example 1 of the present invention.
The experimental method comprises the following steps: the antibacterial effect of the glazed brick is measured by a third-party detection institution Foshan customs integrated technology center according to the building material industry standard of the people's republic of China:
1. and (3) determination of antibacterial rate: the antibacterial rate is determined according to the test method of JC/T897-2014 antibacterial ceramic product antibacterial performance. The principle of the test method is that bacteria are quantitatively inoculated on a sample to be tested, the bacteria are uniformly contacted with the test by a film sticking method, the number of viable bacteria on the sample is detected after a certain time, and the antibacterial rate of the test is calculated.
2. And (3) antibacterial durability measurement: the antibacterial durability is determined according to the test method of JC/T897-2014 antibacterial ceramic product antibacterial performance. The principle of the test method is that a cleaning mode of a product using process is simulated, the surface of a sample is repeatedly scrubbed by using a sodium hypochlorite disinfectant (according to GB/T9266, a scrubbing solution is 5% of the sodium hypochlorite disinfectant, and the scrubbing times are 500 times), and the antibacterial performance of the surface of the sample after being scrubbed is detected.
The experimental results are as follows: the antibacterial rate of the antibacterial glazed brick described in the comparative example 3 to staphylococcus aureus is 0 and the antibacterial durability to staphylococcus aureus is 0, which are determined by the test method of JC/T897-2014 antibacterial ceramic product antibacterial performance by the integrated technology center of Foshan customs. The antibacterial glazed brick of embodiment 1 of the invention has an antibacterial rate of 99.99% for staphylococcus aureus and an antibacterial durability of 99.99% for staphylococcus aureus, which shows that the antibacterial brick prepared by the invention has excellent antibacterial performance and antibacterial durability for staphylococcus aureus; the antibacterial glazed brick of the comparative example 1 has an antibacterial rate of 99.99% for staphylococcus aureus and an antibacterial durability of 94.84% for staphylococcus aureus, which indicates that the amount of the dispersing agent cannot be too low, otherwise the dispersion of the antibacterial agent is influenced, and the antibacterial performance of the prepared antibacterial brick is influenced; the antibacterial glazed tile in the comparative example 2 has an antibacterial rate of 99.95% for staphylococcus aureus and an antibacterial durability of 31.58% for staphylococcus aureus, which indicates that the amount of the adhesive has a great influence on the antibacterial durability, the adhesive is insufficient, and the antibacterial agent cannot be firmly fixed in micropores on the surface of the tile, so that the antibacterial durability of the antibacterial tile is influenced.
Experimental example 3
The experimental example is the detection of the physicochemical properties of the surfaces of the glazed tiles described in example 1 and comparative example 3 of the invention, and the results are shown in table 1.
TABLE 1 detection of physicochemical Properties of the surface of glazed tiles
The results in table 1 show that the corresponding data of the antibacterial glazed brick provided in example 1 of the present invention is consistent with the corresponding data of the glazed brick (without the use of an antibacterial agent) of comparative example 3, and both meet the requirements of national standards, which indicates that the use of an antibacterial agent in the preparation method provided by the present invention has no influence on the physicochemical properties of the surface of the antibacterial glazed brick.
In conclusion, when the antibacterial liquid taking the nano silver wire as the antibacterial active substance is not added into the antibacterial glazed brick, the antibacterial rate of the obtained glazed brick (glazed brick of comparative example 3) to staphylococcus aureus is 0; in the polishing process, the nano silver wire antibacterial active substance is introduced to prepare the antibacterial glazed brick with the antibacterial rate of 99.99 percent of staphylococcus aureus and the antibacterial durability of 99.99 percent of staphylococcus aureus; in addition, comparative examples 1 and 2 show that the amount of the dispersing agent and the binder in the antibiotic solution needs to be moderate, otherwise the dispersion and the stability of the antibiotic agent on the surface of the tile are affected, and the antibiotic performance of the antibiotic tile is finally affected. The antibacterial glazed brick provided by the invention has the advantages of simple preparation process, low cost and strong antibacterial effect.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. The antibacterial ceramic tile is characterized in that the antibacterial ceramic tile is prepared by filling antibacterial liquid into micropores on the surface of the ceramic tile, and the ceramic tile is a polished tile or a glazed tile; the antibacterial liquid comprises an antibacterial agent, a binder, a dispersing agent and water; the antibacterial agent is a nano silver wire.
2. The antibacterial ceramic tile of claim 1, wherein the antibacterial liquid comprises 0.01-2% of antibacterial agent, 1-6% of binder, 0.01-2% of dispersant and the balance of water by mass percentage.
3. The antibacterial ceramic tile of claim 2, wherein the binder is silica sol, the silica sol contains nano silica, and the average particle size of the nano silica is 5nm to 30 nm.
4. The antibacterial ceramic tile as claimed in claim 2, wherein the dispersant is sodium hexametaphosphate or sodium dodecyl sulfate.
5. The antibacterial ceramic tile of claim 1, wherein the average wire diameter of the nano silver wires is 25-40 nm, and the average wire length of the nano silver wires is 25-40 μm.
6. A method for preparing antibacterial ceramic tiles, which is characterized in that the antibacterial ceramic tiles are the antibacterial ceramic tiles of any one of claims 1 to 5, and the preparation method comprises the following steps:
(1) preparing an antibacterial solution according to a formula;
(2) preparing a ceramic tile according to a conventional process;
(3) and (3) adding polishing solution and the antibacterial liquid obtained in the step (1) to perform pressurization grinding and polishing treatment on the ceramic tile prepared in the step (2), so as to obtain the antibacterial ceramic tile.
7. As claimed in claim 6The preparation method is characterized in that in the step (3), the dosage of the antibacterial solution is 3-30 mL/m2。
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113666640A (en) * | 2021-10-21 | 2021-11-19 | 佛山市东鹏陶瓷发展有限公司 | Mesoporous antibacterial frit, preparation method thereof and preparation method of antibacterial ceramic tile |
| CN114671711A (en) * | 2022-04-19 | 2022-06-28 | 新明珠集团股份有限公司 | Antibacterial rock plate and manufacturing method thereof |
| CN116375506A (en) * | 2023-06-06 | 2023-07-04 | 新明珠集团股份有限公司 | Antibacterial glazed ceramic tile with silver decorative effect and preparation method thereof |
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| CN116375506B (en) * | 2023-06-06 | 2023-09-19 | 新明珠集团股份有限公司 | Antibacterial glazed ceramic tile with silver decorative effect and preparation method thereof |
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Address after: 528061 1st floor, No.18 taobo Avenue, Huaxia Ceramics Expo City, Nanzhuang Town, Chancheng District, Foshan City, Guangdong Province Applicant after: New Pearl Group Co.,Ltd. Applicant after: GUANGDONG SUMMIT CERAMICS Co.,Ltd. Applicant after: FOSHAN SANSHUI NEW PEARL CONSTRUCTION CERAMICS INDUSTRIAL Co.,Ltd. Applicant after: Jiangxi Xinmingzhu Building Materials Co.,Ltd. Applicant after: Hubei new Ming Zhu Green Building Materials Technology Co.,Ltd. Address before: 528061 1st floor, No.18 taobo Avenue, Huaxia Ceramics Expo City, Nanzhuang Town, Chancheng District, Foshan City, Guangdong Province Applicant before: GUANGDONG NEWPEARL CERAMIC GROUP Co.,Ltd. Applicant before: GUANGDONG SUMMIT CERAMICS Co.,Ltd. Applicant before: FOSHAN SANSHUI NEW PEARL CONSTRUCTION CERAMICS INDUSTRIAL Co.,Ltd. Applicant before: Jiangxi Xinmingzhu Building Materials Co.,Ltd. Applicant before: Hubei new Ming Zhu Green Building Materials Technology Co.,Ltd. |
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Application publication date: 20210914 |