Coated glass with electromagnetic shielding and photocatalytic self-cleaning functions

Abstract

The utility model discloses coated glass with electromagnetic shielding and photocatalytic self-cleaning functions. The coated glass comprises a glass substrate, a light-emitting diode (LED) light-emitting diode and a light-emitting diode (LED) light-emitting diode, the electromagnetic shielding layer is arranged on the surface of one side of the glass substrate; and the photocatalytic layer is arranged on the surface of one side, far away from the glass substrate, of the electromagnetic shielding layer. The coated glass has electromagnetic shielding and photocatalytic self-cleaning functions at the same time, and is suitable for being used as outdoor glass such as photovoltaic glass, vehicle window glass and building glass.

Description

Technical Field

[0001] The utility model relates to the field of coated glass, in particular to a coated glass with electromagnetic shielding and photocatalytic self-cleaning functions. Background Art

[0002] In the fields of modern architecture, transportation, and renewable energy, the application of outdoor glass is becoming increasingly widespread. Among them, photovoltaic glass, window glass, and architectural glass, etc., as key components, while carrying out traditional functions such as light transmission, heat insulation, and energy conservation, outdoor glass is facing increasing electromagnetic interference and pollution.

[0003] With the rapid development of information technology and the popularization of electronic devices and wireless communication networks, the problem of electromagnetic radiation pollution has become increasingly prominent. For outdoor glass such as photovoltaic glass, window glass, and architectural glass, it not only needs to have good light transmittance to ensure natural lighting and visual effects, but also needs to have a certain electromagnetic shielding ability to prevent electromagnetic signal leakage or external electromagnetic interference from affecting the normal operation of internal electronic devices. Especially in key places such as computer centers, computer rooms, and meeting rooms, the application of electromagnetic shielding glass is particularly important, which can effectively protect sensitive information from being stolen and prevent equipment from malfunctioning due to electromagnetic interference.

[0004] In addition, in the outdoor environment, photovoltaic glass, window glass, and architectural glass, etc., are long-term exposed to sunlight and air pollutants, and are easily attached by dust and pollutants, affecting light transmittance and aesthetics. Summary of the Utility Model

[0005] In order to solve the above deficiencies of the prior art, the utility model provides a coated glass with both electromagnetic shielding and photocatalytic self-cleaning functions, which is suitable as outdoor glass such as photovoltaic glass, window glass, and architectural glass.

[0006] The technical problems to be solved by the utility model are realized through the following technical solutions:

[0007] A coated glass with electromagnetic shielding and photocatalytic self-cleaning functions, comprising:

[0008] A glass substrate;

[0009] An electromagnetic shielding layer, disposed on one side surface of the glass substrate;

[0010] A photocatalytic layer, disposed on the side surface of the electromagnetic shielding layer away from the glass substrate.

[0011] Further, the electromagnetic shielding layer is a transparent conductive film layer, a metal mesh film layer, a titanium carbide-carbon nanotube composite film layer, a metal particle-graphene composite film, or an iron oxide zinc composite film layer.

[0012] Further, the thickness of the electromagnetic shielding layer is 100 - 200 nm.

[0013] Further, the photocatalytic layer is a titanium dioxide film layer, a lanthanum iron oxide composite film layer, or a cadmium sulfide film layer.

[0014] Further, the thickness of the photocatalytic layer is 50 - 150 nm.

[0015] Further, a hydrophobic microstructure is formed on the surface of the photocatalytic layer.

[0016] Further, the coated glass further includes a bonding transition layer disposed between the glass substrate and the electromagnetic shielding layer.

[0017] Further, the bonding transition layer is a sodium oxide film layer, a silicon oxide film layer, or a titanium oxide film layer.

[0018] Further, the thickness of the bonding transition layer is 50 - 100 nm.

[0019] Further, the glass substrate is tempered glass.

[0020] The present utility model has the following beneficial effects: The coated glass of the present utility model sequentially disposes the electromagnetic shielding layer and the photocatalytic layer on the surface of the glass substrate, so as to utilize the electromagnetic shielding layer to shield electromagnetic signals, prevent internal electromagnetic signals from leaking or external electromagnetic interference from affecting the normal operation of internal electronic devices, and utilize the redox reaction generated by the photocatalytic layer being excited by light energy to degrade organic pollutants, so as to achieve the effects of sterilization and self-cleaning. It is suitable as outdoor glass such as photovoltaic glass, window glass, and building glass that needs to be exposed to sunlight and air pollutants for a long time. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the stacked structure of the coated glass provided by the present utility model.

[0022] Figure 2 It is a schematic diagram of the stacked structure of another coated glass provided by the present utility model. Detailed Embodiments

[0023] The present utility model will be described in detail below with reference to the drawings and embodiments. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0025] In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0026] In the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "fixed", "set", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may also be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] Embodiment 1

[0028] As Figure 1 shown, a coated glass having electromagnetic shielding and photocatalytic self-cleaning functions includes:

[0029] A glass substrate 1;

[0030] An electromagnetic shielding layer 2 provided on one side surface of the glass substrate 1;

[0031] A photocatalytic layer 3 provided on the side surface of the electromagnetic shielding layer 2 away from the glass substrate 1.

[0032] The coated glass of the present utility model is provided with the electromagnetic shielding layer 2 and the photocatalytic layer 3 in sequence on the surface of the glass substrate 1, so as to utilize the electromagnetic shielding layer 2 to shield electromagnetic signals, prevent internal electromagnetic signals from leaking or external electromagnetic interference from affecting the normal operation of internal electronic devices, and utilize the redox reaction generated by the photocatalytic layer 3 being excited by light energy to degrade organic pollutants, so as to achieve the effects of sterilization and self-cleaning, and is suitable as outdoor glass such as photovoltaic glass, window glass and building glass that needs to be exposed to sunlight and air pollutants for a long time.

[0033] Preferably, the electromagnetic shielding layer 2 can be but is not limited to a transparent conductive film layer, a metal grid film layer, a titanium carbide-carbon nanotube composite film layer, a metal particle-graphene composite film or an iron zinc oxide composite film layer, etc.

[0034] The transparent conductive film layer is a thin film material that can both conduct electricity and has a high transmittance in the visible light range. Represented by indium tin oxide (ITO) and aluminum-doped zinc oxide (AZO), etc., these materials have a large band gap and only absorb ultraviolet light but not visible light, so they have high transparency.

[0035] The metal grid film layer is a metal grid thin film with good conductivity and transparency. It is a thin film material composed of metal grids, and its characteristic is to achieve the balance of high light transmittance and high conductivity through a fine metal grid structure. While maintaining the good electrical conductivity of the metal, this thin film material improves the visible light transmittance by reducing the planar coverage rate of the metal grid, thus solving the problem of mutual restriction between electrical conductivity and transmittance in traditional transparent conductive thin films.

[0036] The titanium carbide-carbon nanotube composite film layer is a thin film material formed by the composite of carbon nanotubes and titanium carbide. Carbon nanotubes have excellent electrical conductivity and mechanical properties, and their transmittance can be improved by compounding with titanium carbide, and finally a high-transparency or semi-transparent effect is formed.

[0037] The metal particle-graphene composite film is a thin film material formed by the composite of graphene and metal particles. Graphene is a two-dimensional material with excellent electrical conductivity and transparency, and its electrical conductivity is improved by compounding with metal particles, and finally an electromagnetic shielding effect is formed.

[0038] The iron zinc oxide composite film layer is a composite material composed of two compounds, zinc oxide (ZnO) and iron oxide (Fe2O3). Iron zinc oxide has certain electrical conductivity, which is related to its internal electronic structure and ion arrangement. At the same time, as a compound containing iron element, iron zinc oxide also exhibits certain magnetism, and its electrical conductivity and magnetism can both achieve electromagnetic shielding effects.

[0039] In this embodiment, the thickness of the electromagnetic shielding layer 2 is 100 - 200 nm. Of course, the specific thickness of the electromagnetic shielding layer 2 can be determined according to the requirements of the product for electromagnetic shielding ability and the electromagnetic shielding performance of the electromagnetic shielding material, and should not be limited to the above range.

[0040] Preferably, the photocatalytic layer 3 can be, but is not limited to, a titanium dioxide film layer, a lanthanum iron oxide composite film layer, a cadmium sulfide film layer, etc.

[0041] The titanium dioxide film layer is the most common photocatalytic material. Under the irradiation of ultraviolet light or visible light, it can absorb light energy, causing the electrons in its valence band to be excited and transition to the conduction band, while leaving holes in the valence band, thereby generating highly active electron-hole pairs. The electrons and holes migrate to the surface of titanium dioxide respectively and react with the substances adsorbed on its surface (such as water, oxygen, etc.) to generate active oxygen with strong oxidizing properties (such as O2 - , OH·, etc.) and reducing electrons. The active oxygen and electrons undergo redox reactions with the pollutants adsorbed on their surface, and finally decompose the pollutants into harmless or low-toxic substances, such as carbon dioxide, water, etc.

[0042] The lanthanum iron oxide composite film layer is a material formed by the composite of lanthanum oxide and iron oxide, and is a transition metal oxide with a perovskite structure. It exhibits good performance in catalytic oxidation reactions and can decompose water to produce hydrogen, degrade organic pollutants, and reduce CO2 under photocatalysis.

[0043] The photocatalytic mechanism of the cadmium sulfide film layer is complex, mainly including processes such as electron transfer, hole transfer, surface adsorption, and electron-hole recombination. Under illumination, cadmium sulfide absorbs light energy and excites electrons, causing the electrons to transition from the valence band to the conduction band, while leaving holes in the valence band. These excited electrons and holes are highly active and can participate in subsequent redox reactions, and are thus used to degrade various pollutants, including organic pollutants, inorganic pollutants, and heavy metal ions, etc.

[0044] In this embodiment, the thickness of the photocatalytic layer 3 is 50 - 150 nm. Of course, the specific thickness of the photocatalytic layer 3 can be determined according to the requirements of the product for sterilization and cleaning ability and the sterilization and cleaning performance of the photocatalytic material, and should not be limited to the above range.

[0045] Preferably, a hydrophobic microstructure (not shown in the figure) is formed on the surface of the photocatalytic layer 3.

[0046] The hydrophobic microstructure is commonly known as the lotus leaf structure. By bionic design of the microstructure on the surface of the lotus leaf, the surface energy of the photocatalytic layer 3 can be increased, the residence time of pollutants on the photocatalytic layer 3 can be reduced, and the self-cleaning effect can be improved.

[0047] Preferably, the glass substrate 1 is tempered glass to reduce the risk of the coated glass being broken by an external object collision.

[0048] Embodiment 2

[0049] As an optimized solution of Embodiment 1, in this embodiment, as Figure 2 shown, the coated glass further includes a bonding transition layer 4, and the bonding transition layer 4 is disposed between the glass substrate 1 and the electromagnetic shielding layer 2.

[0050] The coated glass of the present invention improves the adhesion of the entire coating layer on the glass substrate 1 by providing the bonding transition layer 4 between the glass substrate 1 and the electromagnetic shielding layer 2, thereby improving the stability and durability of the product.

[0051] The bonding force between the bonding transition layer 4 and the glass substrate 1, and the bonding force between the bonding transition layer 4 and the electromagnetic shielding layer 2 should both be greater than the bonding force between the glass substrate 1 and the electromagnetic shielding layer 2.

[0052] Preferably, the bonding transition layer 4 can be but is not limited to a sodium oxide film layer, a silicon oxide film layer, a titanium oxide film layer, etc. The foregoing materials have good bonding ability with the glass substrate 1 and the inorganic oxide-based electromagnetic shielding layer 2.

[0053] In this embodiment, the thickness of the bonding transition layer 4 is 50 - 100 nm. Of course, the specific thickness of the bonding transition layer 4 can be determined according to the product's requirements for bonding ability and the bonding performance of the bonding transition material, and should not be limited to the above range.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention and are not intended to limit them. Although the embodiments of the present invention have been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the embodiments of the present invention can still be modified or equivalently replaced, and these modifications or equivalent replacements do not make the modified technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A coated glass with electromagnetic shielding and photocatalytic self-cleaning functions, characterized in that, Including: A glass substrate; An electromagnetic shielding layer disposed on one surface of the glass substrate; A photocatalytic layer disposed on a surface of the electromagnetic shielding layer away from the glass substrate.

2. The coated glass according to claim 1, wherein, The electromagnetic shielding layer is a transparent conductive film layer, a metal mesh film layer, a titanium carbide-carbon nanotube composite film layer, a metal particle-graphene composite film or an iron zinc oxide composite film layer.

3. The coated glass according to claim 1 or 2, characterized in that The thickness of the electromagnetic shielding layer is 100-200 nm.

4. The coated glass according to claim 1, wherein The photocatalytic layer is a titanium dioxide film layer, a lanthanum iron oxide composite film layer or a cadmium sulfide film layer.

5. The coated glass according to claim 1 or 4, characterized in that, The thickness of the photocatalytic layer is 50-150 nm.

6. The coated glass according to claim 1, wherein A hydrophobic microstructure is formed on the surface of the photocatalytic layer.

7. The coated glass according to claim 1, wherein The coated glass further includes a bonding transition layer disposed between the glass substrate and the electromagnetic shielding layer.

8. The coated glass according to claim 7, wherein The bonding transition layer is a sodium oxide film layer, a silicon oxide film layer or a titanium oxide film layer.

9. The coated glass according to claim 7 or 8, wherein The thickness of the bonding transition layer is 50-100 nm.

10. The coated glass according to claim 1, wherein The glass substrate is tempered glass.

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