Glass

Abstract

The utility model relates to the technical field of low-emissivity glass, in particular to glass. The glass comprises a glass substrate, and a first dielectric layer, a first functional layer, a second metal protection layer, a second dielectric layer, a second functional layer and a second metal protection layer which are laminated on the glass substrate, and at least one of the first functional layer and the second functional layer comprises a silver layer and a copper layer which are laminated. The thickness of at least one of the first functional layer and the second functional layer can be increased by laminating the silver layer and the copper layer, the low-radiation performance of the glass can be improved, and the transmittance of the glass can be reduced. Meanwhile, as the reflectivity of the copper layer to the visible light is lower than that of the silver layer to the visible light, the glass provided by the embodiment of the utility model has lower reflectivity compared with the glass of which the performance is improved only by increasing the thickness of the silver layer.

Description

Technical Field

[0001] The present application relates to the technical field of low-emissivity glass, and in particular to a type of glass. Background Art

[0002] Low-emissivity glass refers to glass formed by coating the surface of a glass substrate with a coating layer composed of multiple layers of metal or other compounds with low-emissivity properties. Based on the principle of optical transmission and reflection, the coating layer group can effectively control the reflectivity and transmittance of visible light and infrared light, thereby controlling the amount and wavelength of light entering the room, and controlling the low-emissivity performance of the low-emissivity glass, thereby achieving a balance between heat control, cooling cost control and indoor brightness.

[0003] In the related art, the low-radiation performance of low-radiation glass mainly depends on the functional layer. The functional layer has a strong reflective effect on light and can effectively reflect sunlight, including a large amount of infrared rays. Therefore, during sunshine, sunlight will not completely enter the room, making people in the room feel cool and comfortable.

[0004] In order to improve the low-radiation performance of low-radiation glass, the method of increasing the thickness of the functional layer is adopted. In the above method, the transmittance of the functional layer to light is reduced, that is, the transmittance of the low-radiation glass is reduced. However, when the transmittance of the low-radiation glass is reduced, the reflectivity of the low-radiation glass is increased, so that the light reflected by the low-radiation glass into the environment increases, thereby making the light pollution problem more serious. Utility Model Content

[0005] The purpose of the embodiments of the present application is to provide a glass, aiming to solve the problem that low-emissivity glass is difficult to achieve low transmittance and low reflectivity.

[0006] To achieve the above-mentioned purpose, the technical solution adopted in the embodiment of the present application is: a glass, including a glass substrate and a coating layer group arranged on the glass substrate, the coating layer group includes a first dielectric layer, a first functional layer, a second metal protective layer, a second dielectric layer, a second functional layer and a second metal protective layer arranged in sequence and in layers, wherein the first dielectric layer is arranged on the glass substrate, and at least one of the first functional layer and the second functional layer includes a silver layer and a copper layer arranged in layers.

[0007] The beneficial effect of the glass provided by the present application is that the thickness of at least one of the first functional layer and the second functional layer can be increased by stacking the silver layer and the copper layer, the low-radiation performance of the glass can be improved, and the transmittance of the glass can be reduced. At the same time, since the reflectivity of the copper material to light is lower than the reflectivity of the silver material to light, the glass of the embodiment of the present application has a lower reflectivity than the glass whose low-radiation performance is improved only by increasing the thickness of the silver layer. So that the glass can reduce the reflectivity as much as possible under the premise of having excellent low-radiation performance. The glass has low transmittance, low reflectivity and high performance (low-radiation performance).

[0008] In some embodiments, the first functional layer includes a first silver layer and a first copper layer, the first silver layer is disposed on the first dielectric layer, and the first copper layer is disposed on a surface of the first silver layer facing away from the first dielectric layer.

[0009] In some embodiments, the thickness of the first silver layer is 4 nm-7 nm.

[0010] In some embodiments, the thickness of the first copper layer is 8 nm-15 nm.

[0011] In some embodiments, the second functional layer includes a second silver layer, and the thickness of the second silver layer is 7 nm-11 nm.

[0012] In some embodiments, the thickness of the second dielectric layer is 60 nm-70 nm.

[0013] In some embodiments, the second dielectric layer includes a tin oxide layer and a zinc oxide layer.

[0014] In some embodiments, the thickness of the tin oxide layer is 54 nm-60 nm, and the thickness of the zinc oxide layer is 6 nm-10 nm.

[0015] In some embodiments, the second metal protective layer is a nickel-chromium alloy layer, and the thickness of the second metal protective layer is 10 nm-15 nm.

[0016] In some embodiments, the second metal protective layer is a nickel-chromium alloy layer, and the thickness of the second metal protective layer is 6nm-10nm. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 is a schematic diagram of the structure of glass in one of the embodiments of the present application;

[0019] Figure 2 It is a schematic diagram of the spectrum curve of the glass of one embodiment of the present application.

[0020] Reference numerals:

[0021] 1. Glass substrate; 2. First dielectric layer; 3. First functional layer; 31. First silver layer; 32. Second silver layer; 4. First metal protective layer; 5. Second dielectric layer; 6. Second functional layer; 7. Second metal protective layer; 8. Top protective layer. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0023] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] References to "one embodiment", "some embodiments" or "an embodiment" described in the specification of this application mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some other embodiments", "in some other embodiments", etc., which appear at different places in this specification, do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. In addition, in one or more embodiments, particular features, structures or characteristics may be combined in any suitable manner.

[0026] Low-emissivity glass refers to glass formed by coating the surface of a glass substrate with a coating layer composed of multiple layers of metal or other compounds with low-emissivity properties. Based on the principle of optical transmission and reflection, the coating layer group can effectively control the reflectivity and transmittance of visible light and infrared light, thereby controlling the amount and wavelength of light entering the room, and controlling the low-emissivity performance of the low-emissivity glass, thereby achieving a balance between heat control, cooling cost control and indoor brightness.

[0027] In the related art, the structure of the double silver film layer group is: dielectric layer + functional layer + metal protective layer + dielectric layer + functional layer + metal protective layer + dielectric layer. The low-radiation performance of low-radiation glass mainly depends on the functional layer. The functional layer has a strong reflective effect on light and can effectively reflect visible light and infrared rays. Therefore, when the sun shines, visible light and infrared rays will not completely enter the room, making people in the room feel cool and comfortable.

[0028] In order to improve the low-radiation performance of low-radiation glass, the method of increasing the thickness of the functional layer is used. In the above method, the transmittance of the functional layer to light is reduced, that is, the transmittance of the low-radiation glass to light is reduced; however, when the transmittance of the low-radiation glass is reduced, the reflectivity of the low-radiation glass will increase, so that the light reflected by the low-radiation glass into the environment increases, thereby making the light pollution problem more serious. The low-radiation glass in the related art has the problem that it is difficult to achieve low transmittance and low reflectivity and have high performance.

[0029] In view of the above problems, an embodiment of the present application provides a glass, aiming to solve the problem that low-emissivity glass is difficult to achieve low transmittance and low reflectivity and have high performance.

[0030] In order to illustrate the technical solution of the present application, a description is given below with reference to specific drawings and embodiments.

[0031] Please refer to Figure 1 An embodiment of the present application provides a glass, comprising a glass substrate 1 and a coating layer group arranged on the glass substrate 1, the coating layer group comprising a first dielectric layer 2, a first functional layer 3, a first metal protective layer 4, a second dielectric layer 5, a second functional layer 6 and a second metal protective layer 7 which are sequentially and stacked, wherein the first dielectric layer 2 is arranged on the glass substrate 1, and at least one of the first functional layer 3 and the second functional layer 6 comprises a silver layer and a copper layer which are stacked.

[0032] In the related art, the first functional layer 3 and the second functional layer 6 are both silver layers. The silver material has a strong reflective effect on light, and the first functional layer 3 and the second functional layer 6 can effectively reflect visible light and infrared rays. The low-radiation performance of the glass can be further improved by increasing the thickness of the silver layer.

[0033] The glass of the embodiment of the present application can increase the thickness of at least one of the first functional layer 3 and the second functional layer 6 by stacking the silver layer and the copper layer, thereby improving the low-radiation performance of the glass and reducing the transmittance of the glass. At the same time, since the reflectivity of the copper material to light is lower than that of the silver material to light, the glass of the embodiment of the present application has a lower reflectivity than the glass whose low-radiation performance is improved only by increasing the thickness of the silver layer. This allows the glass to reduce the reflectivity as much as possible while having excellent low-radiation performance. This allows the glass to have low transmittance, low reflectivity and high performance (low-radiation performance).

[0034] Please refer to Figure 1 In some embodiments, the first functional layer 3 includes a first silver layer 31 and a first copper layer 32 , the first silver layer 31 is disposed on the first dielectric layer 2 , and the first copper layer 32 is disposed on a surface of the first silver layer 31 facing away from the first dielectric layer 2 .

[0035] Through the above arrangement, the transmittance of the first functional layer 3 to sunlight can be reduced to improve the low-radiation performance of the glass of the embodiment of the present application. Moreover, under the premise of the same thickness, the reflectivity of the first functional layer 3 to light of the embodiment of the present application will be lower than the reflectivity of the silver layer of the same thickness to light, so that the reflectivity of the glass to light can be reduced as much as possible under the premise of improving the low-radiation performance of the glass, so that the glass of the embodiment of the present application not only has excellent low-radiation performance, but also meets the requirement of low reflection of light.

[0036] In some embodiments, the thickness of the first silver layer 31 is 4 nm-7 nm, such as 4 nm, 5 nm, 6 nm, etc.

[0037] It should be noted that the silver material has a high reflectivity to light, and the first silver layer 31 plays the most important role in the low-emissivity performance of the glass. Specifically, if the thickness of the first silver layer 31 is too thin, although the reflectivity of the glass to light can be reduced, the low-emissivity performance of the glass will also be reduced; if the thickness of the first silver layer 31 is too thick, although the low-emissivity performance of the glass can be improved, the reflectivity of the glass to light will also increase. By controlling the thickness of the first silver layer 31 within the range of 4nm-7nm, the low-emissivity performance of the glass and the reflectivity of the glass to light can be balanced, that is, the reflectivity of the glass to light can be reduced as much as possible under the premise of improving the low-emissivity performance of the glass.

[0038] In some embodiments, the thickness of the first copper layer 32 is 8 nm-15 nm, such as 8 nm, 10 nm, 15 nm, etc.

[0039] It should be noted that copper material has a certain reflectivity to light, and the first copper layer 32 can also play a certain role in the low emissivity of the glass. Specifically, if the thickness of the first copper layer 32 is too thin, although the reflectivity of the glass to light can be reduced, the low emissivity performance of the glass will also be reduced; if the thickness of the first copper layer 32 is too thick, although the low emissivity performance of the glass can be improved, the reflectivity of the glass to light will also increase. By controlling the thickness of the first copper layer 32 in the range of 8nm-15nm, the low emissivity performance of the glass and the reflectivity of the glass to light can be balanced, that is, the reflectivity of the glass to light can be reduced as much as possible under the premise of improving the low emissivity performance of the glass.

[0040] In some embodiments, in order to make the glass have lower transmittance, lower reflectivity and higher performance, the second functional layer 6 can be set as a combination of a silver layer and a copper layer like the first functional layer 3 .

[0041] In practical applications, according to specific requirements for transmittance, reflectivity and performance, the first functional layer 3 can be set to be only a silver layer, and the second functional layer 6 can be set to be a combination of a silver layer and a copper layer; or, the first functional layer 3 can be set to be a combination of a silver layer and a copper layer, and the second functional layer 6 can be set to be only a silver layer.

[0042] Specifically, in some embodiments, the first functional layer 3 is set to a combination of a silver layer and a copper layer, and the second functional layer 6 is set to only a silver layer. The second functional layer 6 includes a second silver layer, and the thickness of the second silver layer is 7nm-11nm, for example 9nm, 10nm, etc.

[0043] In the above embodiment, the first functional layer 3 and the second functional layer 6 cooperate to meet specific requirements of transmittance, reflectivity and performance under certain conditions.

[0044] It should be noted that silver material has a high reflectivity to light, and plays the most important role in the low-emissivity performance of glass. Specifically, if the thickness of the second silver layer is too thin, although the reflectivity of the glass to light can be reduced, the low-emissivity performance of the glass will also be reduced; if the thickness of the second silver layer is too thick, although the low-emissivity performance of the glass can be improved, the reflectivity of the glass to light will also increase. By controlling the thickness of the second silver layer in the range of 7nm-11nm, the low-emissivity performance and reflectivity of the glass to light can be balanced, that is, the reflectivity of the glass to light can be reduced as much as possible while improving the low-emissivity performance of the glass.

[0045] In some embodiments, the thickness of the second dielectric layer 5 is 60 nm-70 nm, for example, 62 nm, 65 nm, 67 nm, etc.

[0046] It should be noted that the second dielectric layer 5 has an interference effect on the light reflected by the first functional layer 3. Through the above-mentioned setting, the thickness of the second dielectric layer 5 in the embodiment of the present application is thinner than the thickness of the dielectric layer in the related art. By appropriately thinning the thickness of the second dielectric layer 5, the second dielectric layer 5 can have an optical destructive effect on the first functional layer 3, so as to offset part of the light reflected by the first functional layer 3, thereby achieving the effect of reducing the reflectivity of the glass.

[0047] In some embodiments, the second dielectric layer 5 includes a tin oxide layer and a zinc oxide layer.

[0048] Since zinc oxide has the advantage of high density, the thickness of the zinc oxide layer can be at the nanometer level, so the thickness of the second dielectric layer 5 can be greatly reduced, and the nanometer-level zinc oxide layer can absorb part of the light to change the optical interference effect of the second dielectric layer 5, so that the second dielectric layer 5 can offset part of the light reflected by the first functional layer 3, thereby achieving the effect of reducing the reflectivity of the glass.

[0049] Specifically, the zinc oxide layer is located between the tin oxide layer and the second metal protection layer 7 .

[0050] Since zinc oxide has a high density and is dense and uniform, the zinc oxide layer can also enhance the bonding force between the second metal protection layer 7 and the second dielectric layer 5 to improve the stability of the coating layer group structure.

[0051] In some embodiments, the thickness of the tin oxide layer is 54 nm-60 nm, such as 55 nm, 57 nm, 59 nm, etc., and the thickness of the zinc oxide layer is 6 nm-10 nm, such as 7 nm, 8 nm, 9 nm, etc.

[0052] In the above embodiment, the thickness of the zinc oxide layer and the thickness of the tin oxide layer are appropriately thinned, so that the thickness of the second dielectric layer 5 can be greatly reduced.

[0053] In some embodiments, the first metal protection layer 4 is a nickel-chromium alloy layer, and the thickness of the first metal protection layer 4 is 10 nm-15 nm, such as 12 nm, 14 nm, etc.

[0054] The first metal protection layer 4 is made of nickel-chromium alloy material, which can fully utilize the strong light absorption performance of nickel-chromium alloy material, so that the first metal protection layer 4 can absorb part of the light reflected by the first functional layer 3 to achieve the effect of reducing the reflectivity of the glass.

[0055] Furthermore, by increasing the thickness of the first metal protection layer 4 , the light absorption performance of the first metal protection layer 4 can be further enhanced.

[0056] However, it should be noted that the nickel-chromium alloy material also has a certain reflective effect on light. Although increasing the thickness of the first metal protective layer 4 can enhance the light absorption performance of the first metal protective layer 4, it will also increase the light reflectivity of the first metal protective layer 4. In the embodiment of the present application, by controlling the thickness of the first metal protective layer 4 to 10nm-15nm, the light performance of the first metal protective layer 4 and the reflectivity of the glass can be balanced.

[0057] It should be noted that a first metal protective layer 4 is plated on the surface of the first functional layer 3, and the first metal protective layer 4 also protects the first functional layer 3 to prevent the first functional layer 3 from being oxidized, thereby extending the service life of the coating layer group. In addition, the first metal protective layer 4 can also improve the compressive strength of the coating layer group, making the overall structure and function of the coating layer group more stable, so as to enhance the stability of the glass of the embodiment of the present application.

[0058] In some embodiments, the second metal protection layer 7 is a nickel-chromium alloy layer, and the thickness of the second metal protection layer 7 is 6 nm-10 nm, such as 7 nm, 8 nm, 9 nm, etc.

[0059] The second metal protection layer 7 is made of nickel-chromium alloy material, which can fully utilize the strong light absorption performance of nickel-chromium alloy material, so that the second metal protection layer 7 can absorb part of the light reflected by the first functional layer 3 to achieve the effect of reducing the reflectivity of the glass.

[0060] Furthermore, by increasing the thickness of the second metal protection layer 7 , the light absorption performance of the second metal protection layer 7 can be further enhanced.

[0061] However, it should be noted that the nickel-chromium alloy material also has a certain reflective effect on light. Although increasing the thickness of the second metal protective layer 7 can enhance the light absorption performance of the second metal protective layer 7, it will also increase the light reflectivity of the second metal protective layer 7. In the embodiment of the present application, by controlling the thickness of the second metal protective layer 7 to 6nm-10nm, the light performance of the second metal protective layer 7 and the reflectivity of the glass can be balanced.

[0062] It should be noted that a second metal protective layer 7 is plated on the surface of the first functional layer 3, and the second metal protective layer 7 also protects the first functional layer 3 to prevent the first functional layer 3 from being oxidized, thereby extending the service life of the coating layer group. The second metal protective layer 7 can also improve the compressive strength of the coating layer group, making the overall structure and function of the coating layer group more stable, so as to enhance the stability of the glass of the embodiment of the present application.

[0063] In some embodiments, the first dielectric layer 2 includes a silicon nitride layer, and the thickness of the silicon nitride layer is 30 nm-40 nm.

[0064] Since silicon nitride material has excellent properties such as high thermal stability and strong anti-oxidation ability, and silicon nitride is a covalent compound with high bond strength and can form an oxide protective film in the air, silicon nitride also has good chemical stability, and silicon nitride will not be infiltrated or corroded by many molten metals or alloys such as aluminum, lead, tin, silver, brass, nickel, etc., the embodiment of the present application uses silicon nitride as the first dielectric layer 2 to enhance the strength of the coating layer group.

[0065] Moreover, the use of silicon nitride material as the first dielectric layer 2 can not only prevent the sodium element in the glass substrate 1 from diffusing and migrating into the coating layer group, but also prevent the silver element in the first functional layer 3 from diffusing out of the coating layer group, so that the function and structure of the coating layer group are more stable, thereby extending the service life of the coating layer group.

[0066] In some embodiments, the glass further includes a top protective layer 8 , which is a silicon nitride layer, and the thickness of the top protective layer 8 is 20 nm-25 nm.

[0067] Through the above configuration, the top protective layer 8 can enhance the strength of the coating layer group, improve the later processability of the glass of the embodiment of the present application, and prevent the glass from cracking or breaking when the glass of the embodiment of the present application is processed later. In addition, the top protective layer 8 can further isolate the second functional layer 6 from the decomposition air to reduce the possibility of the second functional layer 6 being oxidized.

[0068] Specifically, in the glass of one embodiment, the first dielectric layer 2 is a silicon nitride layer, and the thickness of the first dielectric layer 2 is 35nm; the first functional layer 3 includes a first silver layer 31 and a first copper layer, the thickness of the first silver layer 31 is 4nm, and the thickness of the first copper layer is 10nm; the first metal protective layer 4 is a nickel-chromium alloy layer, and the thickness of the first metal protective layer 4 is 13nm; the thickness of the second dielectric layer 5 is 65nm, and the second dielectric layer 5 includes a tin oxide layer and a zinc oxide layer, the thickness of the zinc oxide layer is 8nm, and the thickness of the tin oxide layer is 57nm; the second functional layer 6 is a first copper layer 32, and the thickness of the first copper layer 32 is 9nm; the second metal protective layer 7 is a nickel-chromium alloy layer, and the thickness of the second metal protective layer 7 is 6nm; the top protective layer 8 is a silicon nitride layer, and the thickness of the top protective layer 8 is 20nm. Please refer to Figure 2 The glass plating of the above embodiment presents a double-sided golden effect, with a transmittance of 27%, an external reflectivity of 18%, an internal reflectivity of 15%, an absorptivity of 55% and a shading coefficient of 0.22.

[0069] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A glass, characterized in that: The invention comprises a glass substrate and a coating layer group arranged on the glass substrate, wherein the coating layer group comprises a first dielectric layer, a first functional layer, a second metal protective layer, a second dielectric layer, a second functional layer and a second metal protective layer arranged in sequence and in layers, wherein: The first dielectric layer is disposed on the glass substrate, and at least one of the first functional layer and the second functional layer includes a stacked silver layer and a copper layer.

2. The glass according to claim 1, characterized in that The first functional layer includes a first silver layer and a first copper layer. The first silver layer is disposed on the first dielectric layer, and the first copper layer is disposed on a surface of the first silver layer facing away from the first dielectric layer.

3. The glass according to claim 2, characterized in that The thickness of the first silver layer is 4nm-7nm.

4. The glass according to claim 2, characterized in that The thickness of the first copper layer is 8nm-15nm.

5. The glass according to claim 2, characterized in that The second functional layer includes a second silver layer, and the thickness of the second silver layer is 7nm-11nm.

6. The glass according to any one of claims 1 to 5, characterized in that: The thickness of the second dielectric layer is 60nm-70nm.

7. The glass according to claim 6, characterized in that The second dielectric layer includes a tin oxide layer and a zinc oxide layer.

8. The glass according to claim 7, characterized in that The thickness of the tin oxide layer is 54nm-60nm, and the thickness of the zinc oxide layer is 6nm-10nm.

9. The glass according to any one of claims 1 to 5, characterized in that: The second metal protective layer is a nickel-chromium alloy layer, and the thickness of the second metal protective layer is 10nm-15nm.

10. The glass according to any one of claims 1 to 5, characterized in that: The second metal protective layer is a nickel-chromium alloy layer, and the thickness of the second metal protective layer is 6nm-10nm.

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