Heat-insulating glass for protection against infrared and ultraviolet radiation

Abstract

The utility model discloses a kind of heat insulation glass for preventing infrared and ultraviolet, comprising: glass substrate, ionosphere, first plating layer and second plating layer;Glass substrate is double-layer structure;Ionosphere is arranged between two glass substrates;First plating layer is arranged in one side of one glass substrate towards ionosphere, comprising: near-infrared reflection layer and near-infrared control layer;Second plating layer is arranged in one side of one glass substrate away from ionosphere, comprising: antireflection layer, ultraviolet reflection layer, mid-infrared reflection layer and hydrophobic layer.Double-layer glass substrate inhibits the direct heat convection of air in and out of glass from structure, solves the temperature fluctuation problem caused by convection of traditional single-layer glass;Ionosphere further reduces the conduction transmission of heat through solid substrate and intermediate medium, first plating layer and second plating layer, form bidirectional protection structure, effectively insulate infrared and ultraviolet.

Description

Technical Field

[0001] This utility model relates to the field of energy-saving and heat-insulating glass technology, specifically to a heat-insulating glass that protects against infrared and ultraviolet rays. Background Technology

[0002] Glass is widely used as an important light-transmitting material in fields such as greenhouse construction and automobiles. It not only needs to meet the requirements of light transmission, but also needs to have excellent heat insulation and light radiation protection performance. However, existing glass products still have significant technical defects in terms of heat transfer blocking and broad-spectrum light radiation blocking, making it difficult to meet the multi-dimensional performance requirements.

[0003] From the perspective of heat transfer blocking, ordinary single-layer glass cannot form a closed space to block air heat convection. Even if some products use a double-layer glass structure, the space between them is mostly filled with ordinary air or conventional inert gas, which can only slightly weaken heat convection but cannot effectively inhibit the heat conduction of gas molecules. This makes it difficult to maintain the stable temperature environment required for crop growth in greenhouses and causes a surge in energy consumption of temperature control equipment. From the perspective of light radiation blocking, traditional glass has obvious limitations in protecting against infrared rays. The near-infrared band carries a lot of heat. Most existing coated glass uses a single film layer with a fixed reflectivity. Glass with a single layer of metal oxide coating can block infrared rays, but it is often accompanied by a decrease in light transmittance. Laminated glass containing ultraviolet absorbers can increase the ultraviolet blocking rate to more than 90%, but it has almost no blocking effect on infrared rays. Although some multi-layer composite coated glass can block both types of rays at the same time, in order to pursue the blocking effect, the film thickness is often excessively increased, resulting in a decrease in light transmittance and making it difficult to balance the needs of light transmittance and blocking. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model designs a heat-insulating glass that protects against infrared and ultraviolet rays, comprising: a glass substrate, an ionization layer, a first coating layer, and a second coating layer; the glass substrate has a double-layer structure; the ionization layer is disposed between the two glass substrate layers; the first coating layer is disposed on the side of one of the glass substrate layers facing the ionization layer, and sequentially includes, from the glass substrate outwards: a near-infrared reflective layer and a near-infrared modulation layer, the near-infrared modulation layer being used to regulate the reflectivity of the near-infrared reflective layer; the second coating layer is disposed on the side of one of the glass substrate layers facing away from the ionization layer, and sequentially includes, from the glass substrate outwards: an anti-reflection layer, an ultraviolet reflective layer, a mid- and far-infrared reflective layer, and a hydrophobic layer.

[0005] Preferably, the near-infrared reflective layer is an In2O3-SnO2 composite film with a thickness of 15nm-20nm, such that the resistivity is no greater than 2×10⁻⁶. -4 Ω·cm.

[0006] Preferably, the near-infrared modulation layer is a graphene film layer, on which a positive electrode and a negative electrode are disposed, and the positive electrode and the negative electrode are used to apply a bias voltage that can be adjusted between -3V and 3V.

[0007] Preferably, the antireflective layer is a SiO2-TiO2 gradient composite film of composite nanoparticles, wherein the particle size of the composite nanoparticles increases from 20nm to 80nm, the refractive index transitions continuously from 1.46 to 1.98, and the thickness is 80nm-120nm.

[0008] Preferably, the ultraviolet reflective layer consists of 8-10 alternating layers of SiO2 and TiO2 films, wherein the thickness of each layer is λ / 5n-λ / 3n; where λ is the center wavelength of the ultraviolet light, ranging from 300nm to 320nm, and n is the refractive index, wherein the refractive index of SiO2 is 1.45 and the refractive index of TiO2 is 2.45.

[0009] Preferably, the mid- and far-infrared reflective layer comprises, from the glass substrate outwards, a Si3N4 film layer and an Al2O3 film layer, wherein the thickness of the Si3N4 film layer is 70nm-120nm and the thickness of the Al2O3 film layer is 50nm-80nm.

[0010] Preferably, the mid- and far-infrared reflective layer comprises a Si3N4 film and an Al2O3 film layer from the glass substrate outwards, wherein the thickness ratio of the Si3N4 film layer to the Al2O3 film layer is 1.4:1, so that the mid- and far-infrared reflectivity reaches its peak at an incident angle of 60°-70°.

[0011] Preferably, the ionosphere is composed of inert gas ion clusters.

[0012] Compared with the closest existing technology, the beneficial effects of this utility model are as follows:

[0013] 1. This invention achieves the dual core advantages of heat transfer blocking and broad-spectrum light radiation protection through the synergistic design of a double-layer glass substrate, an ionization layer, a first coating layer, and a second coating layer: The double-layer glass substrate first constructs a closed space, structurally suppressing direct heat convection between the inside and outside of the glass, solving the problem of temperature fluctuation caused by convection in traditional single-layer glass; the ionization layer in the middle, with its extremely low thermal conductivity, further reduces heat conduction through the solid substrate and the intermediate medium, simultaneously blocking both heat convection and heat conduction pathways, significantly improving the heat insulation performance of the glass; the first and second coating layers, respectively set on the glass substrate facing and away from the ionization layer, form a two-way protective structure, which can specifically block heat-carrying bands such as near-infrared and mid-to-far-infrared, and effectively block ultraviolet rays. The reasonable layout of the double coating layers ensures the light radiation protection effect without sacrificing the light transmittance of the glass, taking into account both functional requirements and user experience. The overall structure is suitable for the comprehensive requirements of glass light transmittance, heat insulation, and light protection in multiple fields such as construction, automobiles, and greenhouses.

[0014] 2. The antireflective layer of this invention adopts a SiO2-TiO2 gradient composite film design. Through the continuous transition of nanoparticle size and refractive index, the visible light reflectivity is significantly reduced, keeping the glass transmittance above 85%, which is superior to existing composite coated glass. At the same time, through the synergistic effect of the ultraviolet reflective layer, the mid-far-infrared reflective layer and the near-infrared reflective layer, the ultraviolet blocking rate can be ≥99% and the comprehensive infrared blocking rate can be ≥90%, solving the technical problem that traditional glass cannot achieve both light transmittance and blocking properties.

[0015] 3. The mid- and far-infrared reflective layer of this invention forms a reflection peak at an incident angle of 60°-70° through a specific thickness ratio of Si3N4 film and Al2O3 film, which can effectively block outdoor mid- and far-infrared radiation from entering the room in summer; the near-infrared reflective layer combined with the graphene control layer can dynamically adjust the near-infrared reflectivity by applying a bias voltage of -3V to 3V, with an adjustment range of 40%-90%. High reflection in high summer temperatures reduces indoor heat gain, while low reflection in low winter temperatures allows infrared radiation to enter for heating, achieving energy saving by adapting to the outside temperature and reducing energy input.

[0016] 4. The ultraviolet reflective layer of the present invention adopts an alternating film system of 8-10 layers of SiO2 film and TiO2 film. Through the multilayer interference effect, combined with the absorption characteristics of the glass substrate itself, it can completely block ultraviolet rays incident from different angles, avoiding damage to human skin and aging of furniture and fabrics.

[0017] 5. The hydrophobic layer of the present invention can reduce the contact angle of the glass surface, has a self-cleaning function, and reduces dust adhesion; the first coating layer is set on the side of one of the glass substrates facing the ionosphere, protecting the graphene control layer from external erosion, and at the same time, each film layer is designed with refractive index matching to effectively eliminate interference fringes, and the visual clarity is improved compared with traditional multi-layer coated glass.

[0018] 6. The ionization layer of the present invention adopts an inert gas ion cluster design, whose ionization characteristics can significantly limit the thermal motion amplitude of gas molecules, thereby weakening the thermal convection effect between the glass double-layer substrate from the root. At the same time, the low thermal conductivity of the inert gas ion cluster itself can further help reduce heat conduction, ultimately significantly improving the thermal insulation effect of the glass. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the heat-insulating glass of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of the first coating layer of the present invention.

[0021] Figure 3 This is a schematic diagram of the structure of the second coating layer of the present invention.

[0022] Figure label:

[0023] 1-Glass substrate, 2-Ionization layer, 3-First coating layer, 31-Near-infrared reflective layer, 32-Near-infrared modulation layer, 4-Second coating layer, 41-Antireflective layer, 42-Ultraviolet reflective layer, 43-Mid-far-infrared reflective layer, 44-Hydrophobic layer. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] Example 1

[0026] like Figures 1-3 As shown, this utility model provides a heat-insulating glass that protects against infrared and ultraviolet rays, comprising: a glass substrate 1, an ionization layer 2, a first coating layer 3, and a second coating layer 4; the glass substrate 1 has a double-layer structure; the ionization layer 2 is disposed between the two glass substrates 1; the first coating layer 3 is disposed on the side of one of the glass substrates 1 facing the ionization layer 2, and sequentially includes, from the glass substrate 1 outwards: a near-infrared reflective layer 31 and a near-infrared modulation layer 32, the near-infrared modulation layer 32 being used to regulate the reflectivity of the near-infrared reflective layer 31; the second coating layer 4 is disposed on the side of one of the glass substrates 1 away from the ionization layer 2, and sequentially includes, from the glass substrate 1 outwards: an anti-reflection layer 41, an ultraviolet reflective layer 42, a mid- and far-infrared reflective layer 43, and a hydrophobic layer 44. Through the synergistic design of a double-layer glass substrate, an ionization layer, a first coating layer, and a second coating layer, the dual core advantages of heat transfer blocking and broad-spectrum light radiation protection are achieved: The double-layer glass substrate first constructs a closed space, structurally suppressing direct heat convection between the inside and outside of the glass, solving the problem of temperature fluctuation caused by convection in traditional single-layer glass; the ionization layer in the middle, with its extremely low thermal conductivity, further reduces heat conduction through the solid substrate and the intermediate medium, simultaneously blocking both heat convection and heat conduction pathways, significantly improving the heat insulation performance of the glass; the first and second coating layers, respectively located on the glass substrate facing and away from the ionization layer, form a two-way protective structure, which can specifically block heat-carrying wavelengths such as near-infrared and mid-to-far-infrared, and effectively block ultraviolet rays. The reasonable layout of the double coating layers ensures the light radiation protection effect without sacrificing the light transmittance of the glass, taking into account both functional requirements and user experience. The overall structure is suitable for the comprehensive requirements of glass light transmittance, heat insulation, and light protection in various fields such as architecture, automobiles, and greenhouses. The hydrophobic layer reduces the contact angle of the glass surface, has a self-cleaning function, and reduces dust adhesion; the first coating layer is set on the side of one of the glass substrates facing the ionosphere, protecting the graphene control layer from external erosion. At the same time, each film layer is designed with refractive index matching to effectively eliminate interference fringes, and the visual clarity is improved compared with traditional multi-layer coated glass.

[0027] In a preferred embodiment, the near-infrared reflective layer 31 is an In2O3-SnO2 composite film with a thickness of 15nm-20nm, such that the resistivity is no greater than 2×10⁻⁶. -4 Ω·cm.

[0028] In a preferred embodiment, the near-infrared modulation layer 32 is a graphene film layer with a positive electrode and a negative electrode disposed thereon. The positive and negative electrodes are used to apply a bias voltage adjustable between -3V and 3V. The combination of the near-infrared reflective layer and the graphene modulation layer allows for dynamic adjustment of the near-infrared reflectivity by applying a bias voltage between -3V and 3V, with an adjustment range of 40%-90%. High reflectivity is achieved during hot summer months to reduce indoor heat gain, while low reflectivity is achieved during cold winter months to allow infrared radiation to enter for heating, thus achieving energy saving by adapting to external temperature and reducing energy input.

[0029] In a preferred embodiment, the antireflective layer 41 is a SiO2-TiO2 gradient composite film layer with composite nanoparticles. The particle size of the composite nanoparticles increases from 20 nm to 80 nm, the refractive index transitions continuously from 1.46 to 1.98, and the thickness is 80 nm to 120 nm. The SiO2-TiO2 gradient composite film layer design significantly reduces visible light reflectivity through the continuous transition of nanoparticle size and refractive index, maintaining the glass transmittance above 85%, which is superior to existing composite coated glass. Simultaneously, through the synergistic effect of the ultraviolet reflective layer, the mid-to-far-infrared reflective layer, and the near-infrared reflective layer, an ultraviolet blocking rate of ≥99% and an infrared comprehensive blocking rate of ≥90% can be achieved, solving the technical problem of traditional glass's difficulty in simultaneously achieving both light transmittance and light barrier properties.

[0030] In a preferred embodiment, the ultraviolet reflective layer 42 consists of 8-10 alternating layers of SiO2 and TiO2 films, with each layer having a thickness of λ / 5n-λ / 3n; where λ is the center wavelength of the ultraviolet light, ranging from 300nm to 320nm, and n is the refractive index, with SiO2 having a refractive index of 1.45 and TiO2 having a refractive index of 2.45. This ultraviolet reflective layer, employing an alternating system of 8-10 layers of SiO2 and TiO2 films, utilizes multilayer interference effects, combined with the absorption characteristics of the glass substrate itself, to comprehensively block ultraviolet light incident from different angles, preventing damage to human skin and aging of furniture and fabrics.

[0031] In a preferred embodiment, the mid- and far-infrared reflective layer 43 comprises a Si3N4 film and an Al2O3 film layer from the glass substrate 1 outwards, wherein the thickness of the Si3N4 film layer is 70nm-120nm and the thickness of the Al2O3 film layer is 50nm-80nm.

[0032] In a preferred embodiment, the mid- and far-infrared reflective layer 43 comprises, from the glass substrate 1 outwards, a Si3N4 film layer and an Al2O3 film layer, wherein the thickness ratio of the Si3N4 film layer to the Al2O3 film layer is 1.4:1, so that the mid- and far-infrared reflectivity reaches its peak at an incident angle of 60°-70°. Through the specific thickness ratio of the Si3N4 film layer and the Al2O3 film layer, the mid- and far-infrared reflective layer forms a reflection peak at an incident angle of 60°-70°, effectively blocking outdoor mid- and far-infrared radiation from entering the room during summer.

[0033] In a preferred embodiment, the ionosphere is made of inert gas ion clusters. The ionization characteristics of the ionosphere, designed with inert gas ion clusters, can significantly limit the thermal motion amplitude of gas molecules, thereby weakening the thermal convection effect between the glass double-layer substrate from the root. At the same time, the low thermal conductivity of the inert gas ion clusters themselves can further help reduce heat conduction, ultimately significantly improving the thermal insulation effect of the glass.

[0034] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0035] Furthermore, the terms "upper" and "lower" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "upper" or "lower" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0038] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the scope of the claims of this utility model pending approval.

Claims

1. A heat-insulating glass that protects against infrared and ultraviolet rays, characterized in that, include: Glass substrate (1), ionization layer (2), first coating layer (3), and second coating layer (4); The glass substrate (1) has a double-layer structure; The ionization layer (2) is disposed between the two glass substrates (1); The first coating layer (3) is disposed on one side of a glass substrate (1) facing the ionization layer (2), and includes, in sequence from the glass substrate (1) outward: a near-infrared reflective layer (31) and a near-infrared modulation layer (32), wherein the near-infrared modulation layer (32) is used to modulate the reflectivity of the near-infrared reflective layer (31); The second coating layer (4) is disposed on the side of one of the glass substrates (1) away from the ionization layer (2), and includes, in sequence from the glass substrate (1) outward: an anti-reflection layer (41), an ultraviolet reflection layer (42), a mid-far infrared reflection layer (43) and a hydrophobic layer (44).

2. The heat-insulating glass for protecting against infrared and ultraviolet rays as described in claim 1, characterized in that, The near-infrared reflective layer (31) is an In2O3-SnO2 composite film with a thickness of 15nm-20nm, resulting in a resistivity of no more than 2×10⁻⁶. -4 Ω·cm.

3. The heat-insulating glass for protecting against infrared and ultraviolet rays as described in claim 2, characterized in that, The near-infrared modulation layer (32) is a graphene film layer, on which a positive electrode and a negative electrode are disposed. The positive electrode and the negative electrode are used to apply a bias voltage that can be adjusted between -3V and 3V.

4. The heat-insulating glass for protecting against infrared and ultraviolet rays as described in claim 1, characterized in that, The antireflective layer (41) is a SiO2-TiO2 gradient composite film of composite nanoparticles. The particle size of the composite nanoparticles increases from 20nm to 80nm, the refractive index transitions continuously from 1.46 to 1.98, and the thickness is 80nm-120nm.

5. The heat-insulating glass for protecting against infrared and ultraviolet rays as described in claim 1, characterized in that, The ultraviolet reflective layer (42) consists of 8-10 alternating layers of SiO2 film and TiO2 film, wherein the thickness of each layer is λ / 5n-λ / 3n; Where λ is the center wavelength of ultraviolet light, ranging from 300nm to 320nm, and n is the refractive index, where the refractive index of SiO2 is 1.45 and the refractive index of TiO2 is 2.

45.

6. The heat-insulating glass for protecting against infrared and ultraviolet rays as described in claim 1, characterized in that, The mid- and far-infrared reflective layer (43) includes a Si3N4 film and an Al2O3 film layer from the glass substrate (1) outwards, wherein the thickness of the Si3N4 film layer is 70nm-120nm and the thickness of the Al2O3 film layer is 50nm-80nm.

7. The heat-insulating glass for protecting against infrared and ultraviolet rays as described in claim 1, characterized in that, The mid- and far-infrared reflective layer (43) includes a Si3N4 film and an Al2O3 film layer from the glass substrate (1) outwards, wherein the thickness ratio of the Si3N4 film layer to the Al2O3 film layer is 1.4:1, so that the mid- and far-infrared reflectivity reaches its peak at an incident angle of 60°-70°.

8. The heat-insulating glass for protecting against infrared and ultraviolet rays as described in claim 1, characterized in that, The ionosphere (2) is composed of inert gas ion clusters.

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