Antibacterial and stain-proof ceramic tile

Abstract

The utility model relates to an antibacterial and antifouling ceramic tile, which comprises a ceramic tile body, a woven antibacterial layer, a composite antibacterial layer and a transparent super-hydrophobic antifouling layer arranged in sequence on the surface of the ceramic tile body, wherein the woven antibacterial layer comprises a glaze matrix, and the glaze matrix is provided with longitudinally and transversely interwoven nanosilver filaments; the composite antibacterial layer comprises a plurality of inorganic antibacterial glaze layers and photocatalytic antibacterial glaze layers arranged on the surface of the woven antibacterial layer in an interval manner. The inorganic antibacterial glaze layers are uniformly dispersed with nanosilver ions, nanocopper ions or nanozinc ions. The photocatalytic antibacterial glaze layers are uniformly dispersed with nanotitanium dioxide particles. The utility model has synergistic and efficient antibacterial properties, combines instant sterilization of nanosilver, long-term bacteriostasis of metal ions and catalytic decomposition of photocatalysts, and has a wide antibacterial spectrum, high efficiency and long-lasting effect. The utility model has excellent physical antifouling properties: through a biomimetic super-hydrophobic surface, physical repulsion to liquid and partial solid stains is realized, and the utility model is easy to clean and maintain.

Description

Technical Field

[0001] This utility model relates to the technical field of ceramic tiles, and in particular to an antibacterial and stain-resistant ceramic tile. Background Technology

[0002] Tiles, as a widely used building decoration material, are extensively used on the walls and floors of various buildings, including homes, hospitals, schools, and food factories. However, traditional tiles primarily focus on their decorative and physical properties (such as strength and wear resistance), exhibiting significant shortcomings in surface functionalization, especially in humid and high-traffic hygiene-sensitive environments, revealing the following problems: 1. Prone to microbial growth and limited antibacterial ability: Traditional ceramic tile surfaces, especially at the joints, easily accumulate moisture, dirt, and organic matter, providing a breeding ground for bacteria, mold, and other microorganisms. Although some antibacterial tiles have appeared on the market, their antibacterial methods are usually relatively simple. For example: Single-ion antibacterial ceramic tiles: These typically contain metal ions such as silver, copper, and zinc added to the glaze. These tiles suffer from a narrow antibacterial spectrum, rapid decay of antibacterial efficiency over time (due to uncontrollable ion dissolution), and poor effectiveness against certain drug-resistant bacteria.

[0003] Single photocatalytic antibacterial tiles: Their bactericidal effect depends on ultraviolet light. In environments with insufficient light or no light (such as indoors or on the back of cabinets), the antibacterial effect drops sharply, limiting their application scenarios.

[0004] 2. The surface is easily contaminated and difficult to clean and maintain: Water-based stains, oil stains, dust and other dirt on the surface of traditional ceramic tiles can easily adhere to and penetrate into the micropores of the surface, forming stubborn stains. Frequent use of chemical cleaners is required when cleaning, which not only increases maintenance costs, but chemical residues may also cause secondary pollution and environmental hazards.

[0005] Therefore, there is an urgent need in this field for a new type of composite functional ceramic tile that integrates high efficiency, broad spectrum, long-lasting antibacterial ability, and excellent physical stain resistance and easy cleaning performance, in order to solve the above-mentioned defects in the existing technology. Utility Model Content

[0006] The present invention aims to address the shortcomings of the prior art by providing an antibacterial and stain-resistant ceramic tile.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: An antibacterial and stain-resistant ceramic tile includes a ceramic tile body and a woven antibacterial layer, a composite antibacterial layer and a transparent superhydrophobic stain-resistant layer sequentially stacked on the surface of the ceramic tile body. The woven antibacterial layer includes a glaze matrix, within which are interwoven longitudinal and transverse nano-silver wires forming a mesh. The composite antibacterial layer includes several inorganic antibacterial glaze layers and photocatalytic antibacterial glaze layers spaced apart on the surface of the woven antibacterial layer.

[0008] The inorganic antibacterial glaze contains uniformly dispersed nano-silver ions, nano-copper ions, or nano-zinc ions.

[0009] Nano-sized titanium dioxide particles are uniformly dispersed within the photocatalytic antibacterial glaze layer.

[0010] The surface of the transparent superhydrophobic antifouling layer is a non-smooth plane formed by micro- and nano-scale protrusions and / or depressions.

[0011] The micro- and nano-scale protrusions and / or depressions are distributed periodically or non-periodically, together forming a lotus leaf-like biomimetic structure.

[0012] The scale of the micro- and nano-scale protrusions and / or depressions ranges from 10 nanometers to 100 micrometers.

[0013] The arithmetic mean deviation Ra of the micro-profile of the transparent superhydrophobic antifouling layer is less than 0.1 μm, and the average width RSm of the micro-profile unit is less than 50 μm.

[0014] An electromagnetic shielding layer is provided between the ceramic tile body and the woven antibacterial layer.

[0015] The thickness of the ceramic tile body is 5-8mm; the thickness of the electromagnetic shielding layer is 0.5-0.8mm.

[0016] The beneficial effects of this invention are: This invention has synergistic and efficient antibacterial properties, combining the immediate sterilization of nano-silver, the long-term antibacterial effect of metal ions, and the catalytic decomposition of photocatalysts, resulting in a broad antibacterial spectrum, high efficiency, and long-lasting effect; it also has excellent physical antifouling properties: through a biomimetic superhydrophobic surface, it achieves physical repulsion of liquid and some solid stains, making it easy to clean and maintain. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 A schematic diagram of the woven antibacterial layer; Figure 3 This is a schematic diagram of the composite antibacterial layer; In the diagram: 1-Ceramic tile body; 2-Woven antibacterial layer; 3-Composite antibacterial layer; 4-Transparent superhydrophobic and stain-resistant layer; 5-Electromagnetic shielding layer; 21-Enamel matrix; 22-Vertical nano-silver wire; 23-Transverse nano-silver wire; 31-Inorganic antibacterial glaze layer; 32-Photocatalytic antibacterial glaze layer; The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0018] The principles and features of this utility model are described below with reference to the accompanying drawings. The embodiments described are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0019] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments: An antibacterial and stain-resistant ceramic tile, such as Figure 1 As shown, it includes a ceramic tile body 1 and an electromagnetic shielding layer 5, a woven antibacterial layer 2, a composite antibacterial layer 3, and a transparent superhydrophobic antifouling layer 4, which are sequentially stacked on the surface of the ceramic tile body 1.

[0022] The thickness of the ceramic tile body 1 is 5-8mm; the thickness of the electromagnetic shielding layer 5 is 0.5-0.8mm.

[0023] Woven antibacterial layer 2 Figure 2 As shown, it includes a glaze matrix 21, within which are longitudinally interwoven silver nanowires 22 and transversely interwoven silver nanowires 23.

[0024] In the glaze matrix 21, a mesh is formed by longitudinal silver nanowires 22 and transverse silver nanowires 23. Nano silver itself has broad-spectrum and highly efficient antibacterial properties. Its network structure greatly increases the distribution density and contact area of ​​antibacterial components, thereby improving antibacterial efficiency and service life.

[0025] Composite antibacterial layer 3 Figure 3As shown, it includes several inorganic antibacterial glaze layers 31 and photocatalytic antibacterial glaze layers 32 arranged at intervals on the surface of the woven antibacterial layer 2.

[0026] The inorganic antibacterial glaze layer 31 contains uniformly dispersed nano-silver ions, nano-copper ions, or nano-zinc ions.

[0027] Nano-titanium dioxide particles are uniformly dispersed within the photocatalytic antibacterial glaze layer 32.

[0028] The composite antimicrobial layer 3 provides a dual, synergistic antimicrobial mechanism: Inorganic antibacterial glaze 31: By releasing nano silver ions, copper ions or zinc ions, it destroys the bacterial cell structure and achieves "contact" sterilization.

[0029] Photocatalytic antibacterial glaze 32: Under light, especially ultraviolet light, nano titanium dioxide can generate active oxygen, decompose organic pollutants and kill bacteria, achieving "catalytic" self-cleaning.

[0030] The surface of the transparent superhydrophobic antifouling layer 4 is a non-smooth plane formed by micro- and nano-scale protrusions and / or depressions.

[0031] The micro- and nano-scale protrusions and / or depressions are distributed periodically or non-periodically, together forming a lotus leaf-like biomimetic structure.

[0032] The scale of the micro- and nano-scale protrusions and / or depressions ranges from 10 nanometers to 100 micrometers.

[0033] The arithmetic mean deviation Ra of the micro-profile of the transparent superhydrophobic antifouling layer 4 is less than 0.1 μm, and the average width RSm of the micro-profile unit is less than 50 μm.

[0034] The transparent superhydrophobic antifouling layer 4 has the following advantages: Superhydrophobic: Allows liquids such as water and oil to form a high contact angle on the surface and roll off easily, carrying away dust and dirt.

[0035] Stain-resistant: The non-smooth surface greatly reduces the actual contact area between dirt and the tile surface, making it difficult for stains to adhere.

[0036] Quantification parameters: By controlling the arithmetic mean deviation Ra of the micro-profile and the average width RSm, its excellent superhydrophobic properties are ensured.

[0037] Electromagnetic shielding layer 5 gives the ceramic tile the ability to shield electromagnetic waves, making it suitable for places with special requirements for the electromagnetic environment, such as hospitals, laboratories, and data centers.

[0038] This utility model comprises, in sequence, a ceramic tile body 1, an electromagnetic shielding layer 5, a woven antibacterial layer 2, a composite antibacterial layer 3, and a transparent superhydrophobic antifouling layer 4, aiming to achieve powerful antibacterial and antifouling functions through the synergistic effect of physical and chemical processes.

[0039] This invention has synergistic and efficient antibacterial properties: it combines the immediate bactericidal effect of nano-silver, the long-term antibacterial effect of metal ions, and the catalytic decomposition of photocatalysts, resulting in a broad antibacterial spectrum, high efficiency, and long-lasting effect.

[0040] This invention features excellent physical stain resistance: through a biomimetic superhydrophobic surface, it achieves physical repulsion of liquid and some solid stains, making it easy to clean and maintain.

[0041] This invention features functional scalability: by introducing an electromagnetic shielding layer, it demonstrates that the ceramic tile platform can integrate more functions to meet diverse market demands.

[0042] This utility model has an ingenious structural design: the multi-layered structure has its own function and complements each other, building a complete "anti-fouling-antibacterial" protection system from the inside out.

[0043] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.

Claims

1. An antibacterial and stain-resistant ceramic tile, characterized in that, It includes a ceramic tile body (1) and a woven antibacterial layer (2), a composite antibacterial layer (3) and a transparent superhydrophobic antifouling layer (4) sequentially stacked on the surface of the ceramic tile body (1). The woven antibacterial layer (2) includes a glaze matrix (21), in which longitudinal nano-silver wires (22) and transverse nano-silver wires (23) are interwoven into a mesh. The composite antibacterial layer (3) includes several inorganic antibacterial glaze layers (31) and photocatalytic antibacterial glaze layers (32) spaced apart on the surface of the woven antibacterial layer (2).

2. The antibacterial and stain-resistant ceramic tile according to claim 1, characterized in that, The inorganic antibacterial glaze layer (31) contains uniformly dispersed nano silver ions, nano copper ions, or nano zinc ions.

3. The antibacterial and stain-resistant ceramic tile according to claim 1, characterized in that, Nano-titanium dioxide particles are uniformly dispersed within the photocatalytic antibacterial glaze layer (32).

4. The antibacterial and stain-resistant ceramic tile according to claim 1, characterized in that, The surface of the transparent superhydrophobic antifouling layer (4) is a non-smooth plane formed by micro- and nano-scale protrusions and / or depressions.

5. The antibacterial and stain-resistant ceramic tile according to claim 4, characterized in that, The micro- and nano-scale protrusions and / or depressions are distributed periodically or non-periodically, together forming a lotus leaf-like biomimetic structure.

6. The antibacterial and stain-resistant ceramic tile according to claim 5, characterized in that, The scale of the micro- and nano-scale protrusions and / or depressions ranges from 10 nanometers to 100 micrometers.

7. The antibacterial and stain-resistant ceramic tile according to claim 6, characterized in that, The arithmetic mean deviation Ra of the micro-profile of the transparent superhydrophobic antifouling layer (4) is less than 0.1 μm, and the average width RSm of the micro-profile unit is less than 50 μm.

8. The antibacterial and stain-resistant ceramic tile according to claim 7, characterized in that, An electromagnetic shielding layer (5) is provided between the ceramic tile body (1) and the woven antibacterial layer (2).

9. The antibacterial and stain-resistant ceramic tile according to claim 8, characterized in that, The thickness of the ceramic tile body (1) is 5-8mm; the thickness of the electromagnetic shielding layer (5) is 0.5-0.8mm.

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