Functional glass, preparation method thereof and building

Abstract

The invention discloses functional glass, a preparation method of the functional glass and a building, and relates to the technical field of functional glass. The nanometer material conductive film is arranged on the surface of one side of the first glass plate; the second glass plate is located on the side, provided with the nanometer material conductive thin film, of the first glass plate and is bonded and fixed to the first glass plate through a transparent adhesive film; wherein the two opposite edges of the nano-material conductive film are connected with metal strips respectively, and the two metal strips are used for connecting the nano-material conductive film with working voltage and at least used for enabling the nano-material conductive film to generate heat based on the working voltage.

Description

Technical Field

[0001] The present application relates to the technical field of functional glass, and in particular to a functional glass and a preparation method thereof and a building. Background Art

[0002] Traditional buildings are mostly made of opaque materials such as masonry and cement. Although natural light can be introduced through designing windows, the lighting area and lighting efficiency are far inferior to new glass buildings based on glass plates. Glass buildings can provide unobstructed views with large glass structures, making the interior and exterior spaces of the building visually integrated, creating a spacious and bright space atmosphere. In addition, glass buildings can effectively utilize natural light, reduce the demand for artificial lighting, improve energy utilization, and provide sufficient and soft light for the interior. Glass buildings can also achieve good thermal insulation and heat preservation effects through special coatings or multi-layer glass structures, which helps to save energy and reduce emissions.

[0003] Existing glass buildings can generally only achieve passive insulation effects by coating insulation layers, but are unable to actively regulate the temperature inside the building. Summary of the invention

[0004] In view of the above problems, the present application provides a functional glass and a preparation method thereof and a building, so as to achieve the purpose of the functional glass having the function of actively regulating temperature. The specific scheme is as follows:

[0005] In a first aspect, the present application provides a functional glass, comprising:

[0006] First glass plate;

[0007] A nano-material conductive film disposed on a surface of one side of the first glass plate;

[0008] The second glass plate is located on the side of the first glass plate provided with the nano-material conductive film and is bonded and fixed to the first glass plate via a transparent adhesive film;

[0009] The two opposite edges of the nanomaterial conductive film are respectively connected with metal strips, and the two metal strips are used for the nanomaterial conductive film to access the working voltage, at least for making the nanomaterial conductive film generate heat based on the working voltage.

[0010] Optionally, in the above functional glass, the nanomaterial conductive film is a nanomaterial coating coated on the surface of the first glass plate;

[0011] The metal strip is located on the surface of the nano material coating layer which is away from the first glass plate, and is respectively located on two opposite edges of the surface.

[0012] Optionally, in the above functional glass, the material of the nanomaterial coating includes at least one of graphene and carbon nanotubes.

[0013] Optionally, in the above functional glass, the surface of the first glass plate facing the second glass plate includes a first region and a second region located on one side of the first region; the nanomaterial conductive film covers the first region and exposes the second region;

[0014] The metal strip extends from the first area to the second area, and is connected to an external circuit in the second area, and the external circuit is used to provide an operating voltage.

[0015] Optionally, in the functional glass, the metal strip is connected to a connection terminal in the second region, and a connection terminal of the connection terminal is exposed outside the stacked structure of the first glass plate and the second glass plate; the connection terminal is used to connect an external circuit;

[0016] Alternatively, above the second area, the second glass plate is provided with a groove exposing the metal strip, and the external circuit is connected to the metal strip through the groove.

[0017] Optionally, the above functional glass further comprises:

[0018] A temperature detection element, which is used to detect the temperature parameters of the nanomaterial conductive film;

[0019] The control circuit connected to the temperature detection element is used to control the working state of the functional glass based on the temperature parameter.

[0020] Optionally, the functional glass further includes: an antenna radiator located between the first glass plate and the second glass plate, the antenna radiator being used to connect indoor communication equipment of the building to enhance wireless communication performance between the communication equipment and other equipment.

[0021] Optionally, in the above functional glass, the nanomaterial conductive film includes an electrochromic material.

[0022] A second aspect of the present application provides a building, comprising the above-mentioned functional glass.

[0023] A third aspect of the present application provides a method for preparing functional glass, comprising:

[0024] Preparation of nanomaterial conductive slurry;

[0025] Coating a nanomaterial conductive slurry on one side of the surface of the first glass plate after surface treatment to form a nanomaterial coating;

[0026] Drying and curing the conductive coating to form a nanomaterial conductive film;

[0027] After a transparent adhesive film and a second glass plate are sequentially laid on the nano-material conductive film, the second glass plate is bonded and fixed to the first glass plate through a lamination process;

[0028] The two opposite edges of the nanomaterial conductive film are respectively connected with metal strips, and the two metal strips are used for the nanomaterial conductive film to access the working voltage, at least for making the nanomaterial conductive film generate heat based on the working voltage.

[0029] Optionally, in the above preparation method, the method of bonding and fixing the second glass substrate relative to the first glass substrate by a lamination process includes:

[0030] After placing the first glass plate, the transparent adhesive film and the second glass plate stacked in sequence in a laminator, the two glass plates are bonded and fixed through multiple hot pressing stages in sequence;

[0031] The lamination pressure in each hot pressing stage increases successively, and the lamination time in the last hot pressing stage is the longest.

[0032] By means of the above technical scheme, in the functional glass and its preparation method and building provided by the present application, the two opposite glass plates of the functional glass are directly bonded and fixed by a transparent adhesive layer, and a nanomaterial conductive film is provided on the inner surface of the first glass plate. The nanomaterial conductive film not only has good light transmittance, which can ensure the good light transmittance performance of the functional glass, but also can be connected to the working voltage through the two electrically connected metal strips, and can generate heat based on the working voltage, so that the functional glass can have the function of actively adjusting the temperature, thereby adjusting the indoor temperature of the building using the functional glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0034] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which this application can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by this application, should still fall within the scope of the technical contents disclosed in this application.

[0035] Figure 1 A cross-sectional view of a functional glass provided in an embodiment of the present application;

[0036] Figure 2 A top view of a functional glass provided in an embodiment of the present application;

[0037] Figure 3 A top view of another functional glass provided in an embodiment of the present application;

[0038] Figure 4 A top view of another functional glass provided in an embodiment of the present application;

[0039] Figure 5 A top view of another functional glass provided in an embodiment of the present application;

[0040] Figure 6 A schematic flow chart of a method for preparing functional glass provided in an embodiment of the present application.

[0041] Reference numerals:

[0042] 11-first glass plate; 111-first area; 112-second area; 12-second glass plate; 121-groove; 13-nano material conductive film; 14-transparent adhesive film; 15-metal strip; 16-connection terminal; 17-detection end; 18-nano material conductive strip. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the embodiments of the present application. It is known to those skilled in the art that with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0044] At present, in order to realize the function of heating, the functional glass of buildings generally sets a transparent conductive film between two opposite glass plates, and the transparent conductive film can be bonded and fixed to the two glass plates respectively by a layer of film. In order to prevent water vapor from corroding the transparent conductive film, a PET film can also be covered on the surface of the transparent conductive film. Among them, the transparent conductive film is connected to the external circuit through the lead-out electrode, and the working voltage is connected through the external circuit to generate heat based on the working voltage. By adjusting the size of the working voltage, the heat generation can be adjusted, and then the heating temperature of the functional glass can be adjusted. Conventional functional glass mostly uses materials containing Ag. Ag, as a precious metal, leads to a relatively high preparation cost of functional glass. Ag, as a good conductive metal material, has a strong electromagnetic shielding effect. When functional glass is applied to buildings, it will affect indoor electronic equipment, such as mobile phones and computers, to communicate wirelessly with the external environment, and the light transmittance is relatively low. In addition, Ag is prone to oxidation problems, which affects the service life. Moreover, conventional functional glass mostly needs to use DC power supply, and the working voltage is small, the working current is large, and the power supply control circuit design is relatively complicated.

[0045] In order to solve the above problems, the technical solution of the present application provides a functional glass, including:

[0046] First glass plate;

[0047] A nano-material conductive film disposed on a surface of one side of the first glass plate;

[0048] The second glass plate is located on the side of the first glass plate provided with the nano-material conductive film and is bonded and fixed to the first glass plate via a transparent adhesive film;

[0049] The two opposite edges of the nanomaterial conductive film are respectively connected with metal strips, and the two metal strips are used for the nanomaterial conductive film to access the working voltage, at least for making the nanomaterial conductive film generate heat based on the working voltage.

[0050] In the embodiment of the present application, compared with metal materials, the nanomaterial conductive film has good light transmittance, which can ensure that the functional glass has good light transmittance performance, and can also be connected to the working voltage through the two electrically connected metal strips, and can generate heat based on the working voltage, so that the functional glass can have the function of actively regulating temperature, thereby adjusting the indoor temperature of the building using the functional glass. Moreover, compared with metal materials, the electromagnetic shielding effect of the nanomaterial conductive film is weak, and for buildings using this functional glass, it is beneficial to the wireless communication between the electronic equipment inside the building and the external environment.

[0051] Nanomaterial conductive film also has good weather resistance. Compared with metal materials, it is not easily corroded by water vapor. It has good chemical stability and structural stability. It has good environmental adaptability and is not easily corroded by environmental water and oxygen. It has a long service life. Compared with precious metal material Ag, the material cost of nanomaterial conductive film is lower, which can reduce the preparation cost of functional glass.

[0052] Moreover, the nanomaterial conductive film can be heated not only by direct current power supply, but also by alternating current power supply, and the design of the required power supply control circuit is simple.

[0053] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0054] refer to Figure 1 and Figure 2 , Figure 1 A cross-sectional view of a functional glass provided in an embodiment of the present application, Figure 2 This is a top view of a functional glass provided in an embodiment of the present application. In order to facilitate the illustration of the layout of the nano-material conductive film 13 and the metal strip 15 on the surface of the first glass plate 11, Figure 2 The second glass plate 12 is not shown. Figure 1 for Figure 2 Section view along the A-A' direction.

[0055] like Figure 1 and Figure 2 As shown, functional glass includes:

[0056] A first glass plate 11;

[0057] A nano-material conductive film 13 disposed on one side surface of the first glass plate 11;

[0058] A second glass plate 12, the second glass plate 12 is located on a side of the first glass plate 11 provided with the nano-material conductive film 13, and is bonded and fixed to the first glass plate 11 via a transparent adhesive film 14;

[0059] The two opposite edges of the nanomaterial conductive film 13 are connected with metal strips 15, respectively. The two metal strips 15 are used to connect the nanomaterial conductive film 13 to the working voltage, at least to make the nanomaterial conductive film 13 generate heat based on the working voltage. The metal strips 15 can be as follows: Figure 1 The surface shown is located on the side of the nano material conductive film 13 away from the first glass plate 11 , and may also be located on the surface of the first glass plate 11 and covered by the nano material conductive film 13 .

[0060] In this method, the second glass plate 12 is bonded and fixed to the first glass plate 11 by a transparent adhesive film 14, and the transparent adhesive film 14 is bonded and fixed to the nano material conductive film 13. In this method, the functional glass is a non-hollow laminated glass, and any two adjacent layers of the first glass plate 11, the nano material conductive film 13, the transparent adhesive film 14 and the second glass plate 12 are bonded and fixed by lamination without gaps.

[0061] Optionally, the first glass plate 11 and the second glass plate 12 may be tempered glass with high strength and impact resistance, or ordinary glass plates may be used.

[0062] In the embodiment of the present application, compared with metal materials, the nanomaterial conductive film 13 has good light transmittance, which can ensure that the functional glass has good light transmittance. The nanomaterial conductive film 13 can also be connected to the working voltage through the two electrically connected metal strips 15, and can generate heat based on the working voltage, so that the functional glass can have the function of actively regulating temperature, thereby adjusting the indoor temperature of the building using the functional glass. Moreover, compared with metal materials, the electromagnetic shielding effect of the nanomaterial conductive film 13 is weaker, and for buildings using the functional glass, it is beneficial to the wireless communication between the electronic equipment inside the building and the external environment.

[0063] The nano-material conductive film 13 also has good weather resistance. Compared with metal materials, it is not easily corroded by water vapor. It has good chemical stability and structural stability, good environmental adaptability, is not easily corroded by environmental water and oxygen, and has a long service life. Compared with the precious metal material Ag, the material cost of the nano-material conductive film is lower, which can reduce the preparation cost of functional glass. Moreover, the nano-material conductive film 13 can be heated by not only direct current power supply, but also alternating current power supply, and the design of the required power supply control circuit is simple.

[0064] In one implementation of the embodiment of the present application, the nanomaterial conductive film 13 is a nanomaterial coating coated on the surface of the first glass plate 11. The nanomaterial conductive film 13 is directly prepared on the inner surface of the first glass plate 11 through a coating process, so that the nanomaterial conductive film 13 has good adhesion stability on the surface of the first glass plate 11. In other implementations, the nanomaterial conductive film 13 can also be prepared separately first, and the nanomaterial conductive film 13 is bonded and fixed on the surface of the first glass plate 11 through an adhesive film.

[0065] Furthermore, the metal strip 15 may be disposed on the surface of the nanomaterial coating layer facing away from the first glass plate 11, and located at two opposite edges of the surface. Figure 2 As shown, two metal strips 15 are disposed on the upper surface of the nanomaterial conductive film 13 , and a metal strip 15 is disposed on the left and right edges of the upper surface of the nanomaterial conductive film 13 , respectively.

[0066] Optionally, the metal strip 15 may be a Cu strip. Metal Cu has good electrical conductivity and weather resistance, can reduce the impedance of the functional glass, and increase its service life. The material of the metal strip 15 is not limited to metal Cu, and may be other metal materials, such as Al or Ag, etc., which is not limited in the embodiment of the present application.

[0067] The thickness of the metal strip 15 is less than 1 mm, and optionally, the thickness of the metal strip 1 mm is less than 0.5 mm, such as 0.5 mm, 0.3 mm, or 0.25 mm. The metal strip 15 has a relatively small thickness, which has a relatively small effect on the thickness of the functional glass. When the first glass plate 11 and the second glass plate 12 are bonded and fixed by the transparent adhesive film 14, the thickness of the metal strip 15 has a relatively small effect on the flatness between the glass plates, which facilitates the bonding and fixing of the two glass plates by the transparent adhesive film 14.

[0068] exist Figure 1 and Figure 2In the shown manner, metal strips 15 are respectively arranged at two edge positions relative to the upper surface of the nanomaterial conductive film 13. Not only can the metal strips 15 be used to connect the nanomaterial conductive film 13 to a working voltage, but also the metal strips 15 can be used to improve the adhesion stability of the nanomaterial conductive film 13 at the edge before the second glass plate 12 is pressed together, thereby preventing the nanomaterial conductive film 13 from edge warping.

[0069] In other embodiments, after two metal strips 15 are disposed on the surface of the first glass plate 11 , a nanomaterial conductive film 13 may be disposed on the surface of the first glass plate 11 , with the metal strips 15 located between the edge region of the nanomaterial conductive film 13 and the first glass plate 11 .

[0070] In the embodiment of the present application, the material of the nanomaterial coating includes at least one of graphene and carbon nanotubes. Compared with the material containing the precious metal Ag, the material cost of graphene and carbon nanotubes is lower, which can reduce the cost of functional glass.

[0071] Graphene and carbon nanotubes have good chemical stability. Both graphene and carbon nanotubes show excellent chemical stability, which means that they can maintain their performance under harsh environmental conditions and are not prone to chemical reactions. This chemical stability allows them to show good weather resistance in various applications. Graphene and carbon nanotubes also have good structural stability. The structural stability of graphene and carbon nanotubes is also an important manifestation of their weather resistance. Under high temperature or strong light, their lattice structure can remain stable and is not easily deformed or damaged. This structural stability helps them maintain performance under various environmental conditions. Graphene and carbon nanotubes also have good environmental adaptability and can maintain stable performance under different climatic conditions. For example, their application in antistatic fibers is not restricted by climate and use environment and shows good stability.

[0072] Graphene and carbon nanotubes also have good anti-aging ability, which is also part of their weather resistance. During long-term use, they can resist the erosion of environmental factors such as ultraviolet rays and oxygen, and maintain their electrical conductivity and physical properties. Graphene and carbon nanotubes also have good temperature resistance, and can still maintain good performance in high temperature environments. For example, the crystallization of carbon nanotubes during high-temperature cyclization weakens agglomeration, improves its dispersion in the PI matrix, and improves the mechanical properties of the composite material. Graphene and carbon nanotubes also have good corrosion resistance. Corrosion resistance in harsh environments is also an important aspect of their weather resistance. For example, graphene composite films can improve the corrosion resistance of metals because graphene composite films act as ion barrier layers, thereby reducing the probability of metals reacting with ions and reducing the corrosion rate.

[0073] like Figure 2As shown, the surface of the first glass plate 11 facing the second glass plate 12 includes a first area 111 and a second area 112 located on one side of the first area 111; the nanomaterial conductive film 13 covers the first area 111 and exposes the second area 112; wherein the metal strip 15 extends from the first area 111 to the second area 112, and is connected to an external circuit in the second area 112, and the external circuit is used to provide a working voltage.

[0074] In the embodiment of the present application, the metal strip 15 extends from the first region 111 to the second region 112 , thereby facilitating electrical connection between the metal strip 15 and an external circuit in the second region 112 .

[0075] The nano-material conductive film 13 may expose the edge regions of the other three sides of the first region 111 except the second region 112, such as Figure 2 As shown, the nanomaterial conductive film 13 exposes the upper edge region and the left and right edge regions of the first region 111. In other embodiments, the nanomaterial conductive film 13 may completely cover the first region 111.

[0076] Optionally, the edges of the first glass plate 11 and the second glass plate 12 are arranged flush to facilitate bonding and fixing of the two glass plates. At the same time, the edges of the functional glass can have a vertical side wall structure, which not only makes the side walls of the functional glass have a better appearance structure, but also facilitates the installation and fixation of the functional glass on the building.

[0077] In one implementation of the present application, Figure 2 As shown, the metal strip 15 is connected to a connection terminal 16 in the second region 112, and the connection end of the connection terminal 16 is exposed outside the stacked structure of the first glass plate 11 and the second glass plate 12; the connection end is used to connect to an external circuit. In this manner, it is suitable for application scenarios where the functional glass has a large installation space in the second region 112, and the metal strip 15 can be electrically connected to the external circuit through the connection terminal 16.

[0078] The terminal 16 includes an O-shaped metal sheet, which is a thin sheet-shaped element made of metal material, which is convenient for electrical connection. The terminal has an insertion hole for inserting a wire, and the wire can be tightened or loosened in the insertion hole by a screw, so as to facilitate connection with an external circuit.

[0079] refer to Figure 3 , Figure 3 This is a top view of another functional glass provided in an embodiment of the present application. Based on the above implementation, Figure 3In the functional glass shown, above the second area 112, the second glass plate 12 is provided with a groove 121 exposing the metal strip, and the external circuit is connected to the metal strip 15 through the groove 121. In this way, the metal strip 15 does not need to be connected to the terminal 16 in the second area 112, and the width of the second area 112 can be reduced, which is suitable for application scenarios where the functional glass has a small installation space in the second area 112.

[0080] like Figure 3 As shown, the second glass plate 12 is provided with a corresponding groove 121 above the end position of each metal strip 15 in the second area 112, so that each metal strip 15 is connected to the external circuit based on the corresponding groove. Optionally, the groove 121 can be formed on the second glass plate 12 by laser engraving or etching.

[0081] On the basis of any of the above embodiments, the functional glass further includes: a temperature detection element, which is used to detect the temperature parameters of the nanomaterial conductive film; and a control circuit connected to the temperature detection element, which is used to control the working state of the functional glass based on the temperature parameters. The control circuit can automatically adjust the heat generation of the nanomaterial conductive film 13 according to the set instructions to achieve uniform heating of the surface of the functional glass. In this way, the functional glass includes an intelligent temperature control system, which includes a temperature detection element and a control circuit, and can also include a communication module, which can interact with mobile devices (such as collection, smart bracelets, etc.) for data. The control circuit may include an integrated control chip.

[0082] Among them, the intelligent temperature control system can detect and adjust the surface temperature of the functional glass. The control circuit can adjust the working voltage based on user instructions to control the heat generation of the functional glass, so that the heating state of the functional glass can be remotely controlled.

[0083] The intelligent temperature control system can also control the disconnection between the external circuit and the functional glass when the temperature parameters exceed the set threshold to prevent damage to the device or fire caused by excessive temperature.

[0084] The intelligent temperature control system can also have functions such as overload protection and short circuit protection to ensure the safety of functional glass during use.

[0085] Users can remotely control the smart temperature control system through an APP installed in mobile devices such as mobile phones or a remote control to control the working status and heating temperature of the smart glass.

[0086] The temperature detection element can be fixed between the two glass plates to prevent damage by external forces. The control circuit can be arranged outside the functional glass or between the two glass plates. If the control circuit is arranged between the two glass plates, in order to avoid affecting the light transmission performance, the control circuit can be arranged in the second area 112. In one embodiment, the temperature detection element can be an independently packaged temperature sensor.

[0087] refer to Figure 4 , Figure 4 A top view of another functional glass provided in an embodiment of the present application, based on the above embodiment, at least one metal strip 15 has two detection ends 17 extending therefrom, for detecting the portion of the metal strip 15 between the two detection ends 17 as a temperature detection element.

[0088] exist Figure 4 In the illustrated manner, a portion of the metal strip 15 can be reused as a temperature detection element, without the need to add a separate temperature detection element, thereby improving integration and reducing manufacturing costs.

[0089] For a certain section of metal material, its resistance is related to temperature. Therefore, when the functional glass applies a working voltage to control the heating of the nano-material conductive film 13, the resistance of the metal strip 15 located between the two detection ends 17 at different temperatures can be pre-calibrated based on the working voltage. Therefore, during the heating process of the functional glass, the control circuit can collect the electrical parameters of a section of the metal strip 15 between the two detection ends 17, and based on the corresponding relationship between the electrical parameters and the temperature, the current temperature can be determined. Among them, the electrical parameter can be resistance, or it can be current or voltage related to resistance.

[0090] exist Figure 4 In the manner shown, the two detection ends 17 connected to the same metal strip 15 can be as follows Figure 4 As shown, the metal strip 15 is led out of the functional glass on one side of the functional glass adjacent to the metal strip 15 to be connected to a control circuit.

[0091] In other ways, the two detection ends 17 can also be connected to the second area 112 through leads located at the edge of the first glass plate 11, and led out from the second area 112 to the outside of the functional glass to be connected to the control circuit in the second area 112. This method facilitates the interconnection of the functional glass with other external circuits.

[0092] refer to Figure 5 , Figure 5 This is a top view of another functional glass provided in an embodiment of the present application. Based on the above implementation, Figure 5In the illustrated method, a nanomaterial conductive strip 18 made of the same material as the nanomaterial conductive film 13 is disposed in the second region 112, and the nanomaterial conductive strip 18 is used as a temperature detection element. The nanomaterial conductive strip 18 is insulated from the nanomaterial conductive film 13. The nanomaterial conductive film 13 and the nanomaterial conductive strip 18 are made of the same conductive nanomaterial, so the nanomaterial conductive strip can be prepared while preparing the nanomaterial conductive film 13, without adding a temperature detection element separately, thereby improving integration and reducing preparation costs.

[0093] If the metal strip 15 is connected to an external circuit via the connection terminal 16, Figure 5 As shown, two ends of the nano material conductive strip 18 may be connected to detection ends 17 respectively, and the control circuit is connected via the detection ends 17 .

[0094] If the metal strip 15 is connected to the external circuit in the second area 112 through the groove 121 provided on the second glass plate 12 , both ends of the nanomaterial conductive strip 18 can be exposed through the corresponding grooves 121 provided on the second glass plate 12 to facilitate connection with the control circuit.

[0095] In addition, by using the second area 112 to set the nano material conductive strip, the unlimited space of the metal strip 15 for connecting with the external circuit can be used to set the nano material conductive strip without increasing the area of ​​the functional glass.

[0096] The nano-material conductive film 13 may be made of graphene or carbon nanotube material.

[0097] Graphene is a two-dimensional material composed of carbon atoms in sp² hybrid orbitals. Its unique electronic structure gives it excellent electrical conductivity. At room temperature, the electrical conductivity of graphene can reach 10 6 S / m or more. As the temperature rises, the conductivity of graphene will change. Specifically, when the temperature rises, the electrons in the graphene will be subject to more scattering and collisions, causing the conductivity to gradually decrease. In addition, the resonance effect of photons and phonons at high temperatures will also affect the transmission and energy dissipation of electrons, thereby affecting the conductivity of graphene. Therefore, based on the relationship between the conductivity of graphene and temperature, a temperature detection element made of graphene material can be used to detect the temperature of functional glass.

[0098] Carbon nanotubes are one-dimensional nanomaterials composed of carbon atoms, and their resistance increases with increasing temperature. This is because as the temperature rises, the thermal motion of atoms and molecules increases, and the scattering of electrons and lattices increases, resulting in an increase in resistance. In addition, there are some nonlinear characteristics in the relationship between the resistance and temperature of carbon nanotubes. In some cases, the resistance of carbon nanotubes may suddenly jump or change with changes in temperature. Therefore, based on the relationship between the resistance and temperature of carbon nanotubes, temperature detection elements made of carbon nanotubes can be used to detect the temperature of functional glass.

[0099] Based on any of the above embodiments, the functional glass further includes an antenna radiator located between the first glass plate 11 and the second glass plate 12, and the antenna radiator is used to connect the indoor communication equipment of the building to enhance the wireless communication performance between the communication equipment and other devices.

[0100] In a building, the ability to send and receive wireless signals inside the building may be affected due to the obstruction of the building wall or the large internal building area. In the embodiment of the present application, by adding an antenna radiator between the first glass plate 11 and the second glass plate 12, the wireless communication performance of the communication device with other devices can be enhanced.

[0101] In one implementation, a metal strip with a length adapted to the communication band may be provided in the second region 112 as an antenna radiator.

[0102] In another way, at least one metal strip 15 can be provided to include a first metal segment and a second metal segment, and the length of one of the first metal segment and the second metal segment is adapted to the communication band, and is used to be multiplexed as an antenna radiator. The first metal segment and the second metal segment are connected by a gating device, and the gating device can block low-frequency signals through high-frequency signals. Optionally, the gating device can be a filter. Since the working voltage used to control the heating of the nanomaterial conductive film 13 is a low-frequency signal, the working voltage can be transmitted in the first metal segment and the second metal segment to control the heating of the nanomaterial conductive film 13. Since the wireless signal received and transmitted by the antenna radiator is a high-frequency signal, the high-frequency signal will be blocked by the gating device, so that one of the first metal segment and the second metal segment multiplexed as the antenna radiator receives and transmits the wireless signal, and the other does not interfere with the transmission and reception of the wireless signal.

[0103] Optionally, the length of the antenna radiator is adapted to the wireless signal of the WIFI frequency band, and can be used to send and receive wireless signals of the WIFI frequency band, so it can be used to enhance the communication effect of the wireless signal of the WIFI frequency band in the building.

[0104] Based on any of the above embodiments, the nanomaterial conductive film 13 of the functional glass includes an electrochromic material. The temperature of the functional glass is related to the color of the electrochromic material, and the temperature of the functional glass can be characterized based on the color of the electrochromic material. In this way, the nanomaterial conductive film 13 can have an electrochromic function. When the functional glass applies a working voltage to the nanomaterial conductive film 13 and generates heat through the nanomaterial conductive film 13, the nanomaterial conductive film 13 can also be electrochromic to change the appearance color of the functional glass. In this way, not only can the functional glass have a variety of appearance colors, but also, since the color of the electrochromic is related to the applied voltage, the working state of the functional glass can be determined based on the appearance color of the functional glass to determine whether it is in a powered-on heating state, and the magnitude of the applied voltage and the current heating temperature can also be determined based on the appearance color of the functional glass.

[0105] Optionally, the electrochromic material displays a first color when the nanomaterial conductive film 13 is connected to a first working voltage, and displays a second color when the nanomaterial conductive film 13 is connected to a second working voltage. The first working voltage and the second working voltage are different, and the first color and the second color are different. Different first working voltages and second working voltages can make the functional glass have different heating temperatures, and the first color and the second color are different, so that the functional glass can have different appearance colors at different heating temperatures, and the current heating temperature of the functional glass can be determined by the appearance color.

[0106] From the above description, it can be seen that the functional glass provided in the embodiment of the present application can achieve uniform heating and static heating, and the nano-material conductive film 13 used for heating also has good transparency and good invisibility, and has little effect on the transparency of the functional glass. In addition, the infrared rays heated by the nano-material conductive film 13 can also be used to achieve health therapy functions.

[0107] The nanomaterial conductive film 13 may also include an electrochromic material, which can realize the electrochromic change of the functional glass. Optionally, the nanomaterial conductive film 13 includes a one-dimensional carbon nanomaterial, such as a carbon nanotube. The single chiral carbon nanotube can not only be used to generate heat based on the working voltage based on its good conductivity, but also has an electroluminescent effect, which can induce electrons to jump from the valence band to the conduction band under the action of the working voltage, and release energy in the form of photons in the subsequent relaxation process, so that colored visible light can be emitted.

[0108] Compared with conventional laminated glass heated by precious metals, the functional glass provided by the embodiment of the present application has a lower cost and does not affect the wireless communication performance of electronic devices in the indoor space formed by the functional glass. In addition, the functional glass uses nanomaterials with good stability and transparency, and has a long service life and good transparency. The functional glass can be powered by direct current or low-frequency alternating current for heating, and the circuit design is simple.

[0109] In the embodiment of the present application, the transparent adhesive film 14 can realize seamless bonding and fixing between the first glass plate 11 and the second glass plate 12, which is a new type of laminated glass, so that the nano material conductive film 13 can be bonded and fixed between the two glass plates without gaps, and the nano material conductive film 13 will not be exposed to the air, which increases safety, and at the same time isolates the corrosion of water and oxygen on the nano material conductive film 13, increases reliability, and prolongs service life. Moreover, based on the transparent adhesive film 14 bonded on the whole surface, the risk of glass shattering can be reduced, and after shattering, the whole surface transparent adhesive film 14 can prevent the formation of sharp fragments, thereby reducing the threat to personal safety.

[0110] Based on the functional glass provided in the above embodiment, another embodiment of the present application further provides a building, including the functional glass provided in the above embodiment. The building adopts the functional glass provided in the above embodiment, and can realize heating control of the indoor environment through the functional glass.

[0111] It should be noted that the functional glass in the embodiments of the present application is not limited to being used in buildings, but can also be used for windshields in vehicles or other devices that require heating.

[0112] Based on the functional glass provided in the above embodiments, another embodiment of the present application further provides a preparation method for preparing the functional glass provided in any one of the above embodiments. The preparation method can be as follows: Figure 6 shown.

[0113] refer to Figure 6 , Figure 6 A schematic diagram of a method for preparing functional glass provided in an embodiment of the present application, combined with the above-mentioned embodiment drawings and Figure 6 As shown, the preparation method comprises:

[0114] Step S11: preparing nanomaterial conductive paste.

[0115] The nanomaterial conductive paste includes a paste precursor and a conductive nanomaterial mixed in the paste precursor, wherein the conductive nanomaterial may be at least one of graphene and carbon nanotubes.

[0116] In the embodiment of the present application, nanomaterials with good electrical conductivity are selected to prepare the nanomaterial conductive film 13, which can improve its heating performance.

[0117] The prepared nanomaterial conductive paste may be subjected to quality inspection before coating the surface of the first glass plate 11 to ensure the performance of the subsequently prepared nanomaterial conductive film 13. The quality inspection includes: conductivity test, adhesion test, and high temperature resistance test, etc., so that the subsequently formed nanomaterial conductive film 13 meets the quality standards.

[0118] Step S12: coating a nanomaterial conductive slurry on one side of the surface of the first glass plate 11 after surface treatment to form a nanomaterial coating.

[0119] By coating a layer of nanomaterial conductive paste on the surface of the first glass plate 11, a nanomaterial coating with excellent conductivity and adhesion can be formed on the surface. The nanomaterial coating is tightly attached to the surface of the first glass plate 11 to form a conductive heating area.

[0120] Optionally, before coating a layer of nanomaterial conductive slurry on the surface of the first glass plate 11, the surface of the first glass plate 11 is pretreated, and the pretreatment includes cleaning and polishing the surface of the first glass plate 11 to remove stains on the surface of the glass plate and improve the surface adhesion stability of the prepared nanomaterial conductive film 13.

[0121] Step S13: drying and curing the conductive coating to form a nano-material conductive film 13 .

[0122] The drying and curing process can ensure that the coating is closely bonded to the surface of the glass plate to form a nano-material conductive film 13 that meets quality requirements. After the drying and curing process, the nano-material conductive film 13 on the surface of the first glass plate 11 can be sorted and inspected to ensure that the nano-material conductive film 13 is not damaged.

[0123] Step S14: After the transparent adhesive film 14 and the second glass plate 12 are sequentially laid on the nano-material conductive film 13 , the second glass plate 12 is bonded and fixed to the first glass plate 11 through a lamination process.

[0124] If the above non-hollow laminated functional glass is prepared, the two glass plates can be bonded and fixed by a transparent adhesive film 14. At this time, the transparent adhesive film 14 and the second glass plate 12 can be sequentially laid on the nano-material conductive film 13, and then the second glass plate 12 and the first glass plate 11 can be bonded and fixed relative to each other through a lamination process. Optionally, the transparent adhesive film 14 can be an EVA adhesive film, or an adhesive film of other materials.

[0125] Two opposite edges of the nanomaterial conductive film 13 are respectively connected with metal strips 15 , and the two metal strips 15 are used to connect the nanomaterial conductive film 13 to the working voltage, at least to make the nanomaterial conductive film 13 generate heat based on the working voltage.

[0126] Optionally, in the above preparation method, a method for bonding and fixing the second glass substrate relative to the first glass substrate through a lamination process includes: placing the first glass plate, the transparent adhesive film and the second glass plate stacked in sequence in a laminator, and bonding and fixing the two glass plates in sequence through multiple hot pressing stages; wherein the lamination pressure of each hot pressing stage increases in sequence, and the lamination time of the last hot pressing stage is the longest.

[0127] The entire lamination process is divided into a plurality of hot pressing stages, and the lamination pressure of each hot pressing stage is set to increase in sequence, and the lamination time of the last hot pressing stage is the longest. The other hot pressing stages before the last hot pressing stage can be performed by increasing the lamination pressure in sequence to achieve a good pre-pressing effect by gradually increasing the lamination pressure, so as to achieve reliable pre-lamination fixation between the two glass plates. In the last hot pressing stage, the two glass plates can be finally reliably and firmly bonded and fixed by the maximum lamination time and lamination pressure.

[0128] In the embodiment of Table 1 below, the lamination process is divided into three hot pressing stages as an example for explanation. It is easy to know that in the embodiment of the present application, the number of hot pressing stages can be set according to demand and is not limited to 3.

[0129] If two glass plates are coated with a transparent adhesive film 14 and bonded and fixed by a lamination process, the working parameters of the lamination may be as shown in Table 1 below.

[0130] Table 1

[0131]

[0132] Before lamination, vacuuming is performed to reduce the pressure of the lamination chamber to below the standard atmospheric pressure, and the vacuuming time may be 5-10 seconds. During the lamination process, the platform temperature of the laminator may be fixed, such as 110°C.

[0133] The lamination process includes multiple stages, and the lamination pressure of each stage increases successively. The lamination pressure is increased in stages to ensure the bonding and fixing effect while preventing the problem of fragments caused by directly applying a large lamination pressure. The lamination time of each stage can be the same. As shown in Table 1, the lamination process includes three stages, which are hot pressing section 1, hot pressing section 2 and hot pressing section 3, and the lamination time of the three stages can be 30s. The pressure of the three stages is -80Kpa, -60Kpa, and -50Kpa, respectively. The pressure of the three stages increases successively, and the lamination pressure applied gradually increases.

[0134] Before laying the transparent adhesive film 14, it is necessary to first bond and fix the metal strip 15 on the surface of the nano-material conductive film 13. Figure 1 and Figure 2 As shown, after a nanomaterial conductive film 13 is formed on the surface of the first glass plate 11, a metal strip 15 is laid on the surface of the nanomaterial conductive film 13, and a conductive adhesive is coated on the lower surface of the metal strip 15 to be electrically connected and fixed to the nanomaterial conductive film 13, and the upper surface of the metal strip 15 can be bonded and fixed to the second glass plate 12 through a transparent adhesive film 14.

[0135] If the metal strip 15 needs to be connected to an external circuit using a terminal block 16, after the metal strip 15 is bonded and fixed, the terminal block 16 is clamped between the first glass plate 11 and the metal strip 15, and a transparent adhesive film 14 and a second glass plate 12 are sequentially applied on top of the nano-material conductive film 13 to form a laminated structure. The laminated structure is placed in a laminator and laminated at a set temperature and pressure to form a firm bond between the transparent adhesive film 14 and the two glass plates.

[0136] After lamination, for the prepared functional glass, the conductivity between the nanomaterial conductive film 13 and the metal strip 15 needs to be tested to ensure that the current path is smooth and the heat is evenly generated. A power interface connected to an external circuit needs to be set at the set position of the functional glass to facilitate connection with the external circuit and provide working voltage through the external circuit.

[0137] In the specification of this application, each embodiment is described in a progressive, parallel, or progressive and parallel manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other. The embodiments provided in the embodiments of this application can be combined with each other if there is no contradiction.

[0138] It should be noted that in the description of the present application, it should be understood that the description of the drawings and embodiments is illustrative rather than restrictive. The same reference numerals throughout the embodiments of the specification identify the same structure. In addition, for the sake of understanding and ease of description, the drawings may exaggerate the thickness of some layers, films, panels, regions, etc. It is also understood that when an element such as a layer, film, region, or substrate is referred to as "on" another element, the element may be directly on the other element or there may be an intermediate element. In addition, "on" refers to positioning an element on or below another element, but does not essentially refer to positioning on the upper side of another element according to the direction of gravity.

[0139] The terms "upper", "lower", "top", "bottom", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application 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 cannot be understood as limiting the present application. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0140] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the article or device including the above elements.

[0141] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A functional glass, characterized in that: include: First glass plate; A nano-material conductive film disposed on a surface of one side of the first glass plate; A second glass plate is located on a side of the first glass plate provided with the nano-material conductive film and is bonded and fixed to the first glass plate via a transparent adhesive film; Two opposite edges of the nanomaterial conductive film are respectively connected with metal strips, and the two metal strips are used for the nanomaterial conductive film to access the working voltage, at least for making the nanomaterial conductive film generate heat based on the working voltage.

2. The functional glass according to claim 1, characterized in that: The nanomaterial conductive film is a nanomaterial coating coated on the surface of the first glass plate; The metal strip is located on a surface of the nano material coating layer facing away from the first glass plate, and is respectively located on two opposite edges of the surface.

3. The functional glass according to claim 2, characterized in that: The material of the nanomaterial coating includes at least one of graphene and carbon nanotubes.

4. The functional glass according to claim 1, characterized in that: The surface of the first glass plate facing the second glass plate includes a first area and a second area located on one side of the first area; the nanomaterial conductive film covers the first area and exposes the second area; The metal strip extends from the first area to the second area, and is connected to an external circuit in the second area, and the external circuit is used to provide the operating voltage.

5. The functional glass according to claim 4, characterized in that: The metal strip is connected to a connection terminal in the second region, and the connection end of the connection terminal is exposed outside the stacked structure of the first glass plate and the second glass plate; the connection end is used to connect the external circuit; Alternatively, the second glass plate is provided with a groove above the second area for exposing the metal strip, and the external circuit is connected to the metal strip through the groove.

6. The functional glass according to claim 1, characterized in that: Also includes: A temperature detection element, wherein the temperature detection element is used to detect a temperature parameter of the nanomaterial conductive film; The control circuit connected to the temperature detection element is used to control the working state of the functional glass based on the temperature parameter.

7. The functional glass according to claim 1, characterized in that: Also includes: The antenna radiator is located between the first glass plate and the second glass plate, and is used to connect indoor communication equipment of the building to enhance the wireless communication performance between the communication equipment and other equipment.

8. The functional glass according to any one of claims 1 to 7, characterized in that: The nano-material conductive film includes an electrochromic material.

9. A building, characterized in that: Comprising the functional glass as described in any one of claims 1 to 8.

10. A method for preparing the functional glass according to any one of claims 1 to 8, characterized in that: include: Preparation of nanomaterial conductive slurry; Coating the nanomaterial conductive slurry on one side of the surface of the first glass plate after surface treatment to form a nanomaterial coating; Drying and curing the conductive coating to form a nanomaterial conductive film; After sequentially laying a transparent adhesive film and a second glass plate on the nano-material conductive film, the second glass plate is bonded and fixed relative to the first glass plate through a lamination process; Two opposite edges of the nanomaterial conductive film are respectively connected with metal strips, and the two metal strips are used for the nanomaterial conductive film to access the working voltage, at least for making the nanomaterial conductive film generate heat based on the working voltage.

11. The preparation method according to claim 10, characterized in that: The method for bonding and fixing the second glass substrate relative to the first glass substrate by a lamination process comprises: After placing the first glass plate, the transparent adhesive film and the second glass plate stacked in sequence in a laminator, the two glass plates are bonded and fixed through multiple hot pressing stages in sequence; The lamination pressure of each hot pressing stage increases successively, and the lamination time of the last hot pressing stage is the longest.

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