Sunlight control coated glass with low emissivity

Abstract

This utility model discloses a solar control coated glass with low radiation performance, comprising a glass substrate and a bottom dielectric layer, a second dielectric layer, a first barrier layer, a low radiation functional layer, a second barrier layer, a third dielectric layer, a fourth dielectric layer, and a fifth dielectric layer sequentially stacked on one surface of the glass substrate; the low radiation functional layer is a titanium oxide layer, which has low light transmittance, low shading, and low radiation performance, can be used as a single piece, and can replace traditional heat-reflective and offline single-silver glass.

Description

Technical Field

[0001] This utility model belongs to the field of coated glass technology, specifically relating to a solar control coated glass with low radiation performance. Background Technology

[0002] Coated glass is a special type of glass that is coated with one or more layers of metal, metal oxide, dielectric, or composite thin films through physical or chemical methods, giving the glass specific functions. Its performance can be precisely designed through the film material, structure, and thickness, and it is widely used in construction, automotive, electronics, photovoltaic, and other fields.

[0003] Solar control coated glass is a type of functional glass that has one or more layers of metal or metal oxide film coated on its surface using a special process. It is mainly used to regulate the heat and ultraviolet rays entering the room while maintaining natural lighting.

[0004] Solar control coated glass and low-emissivity (Low-E) glass are two different types of coated glass, with different core functions and technical principles. Solar control coated glass has a single or multiple layers of metal (such as silver, titanium, stainless steel) or metal oxide film coated on its surface, selectively reflecting or absorbing near-infrared rays and some visible light in the solar spectrum, but its ability to block far-infrared rays (heat emitted by objects indoors) is relatively weak. Low-emissivity (Low-E) glass has multiple layers of silver or other low-emissivity materials (such as indium tin oxide) coated on its surface, forming a highly reflective film that blocks far-infrared rays while allowing visible light to pass through. Low-E films also have some blocking ability for near-infrared rays (heat) in solar radiation, but their main advantage lies in heat insulation.

[0005] Ordinary solar control coated glass typically does not have low-emissivity features because its coating design is primarily for reflecting solar radiation and has a weaker ability to block far-infrared rays. It focuses more on heat insulation than heat preservation.

[0006] Chinese patent CN205953839U discloses a low-transmittance, deep blue sunlight-controlling coated glass, which includes a glass substrate, a first dielectric layer, a second dielectric layer, a shielding layer, a third dielectric layer, and an outer protective layer sequentially sputtered onto the glass substrate from the inside out. The sunlight-controlling coated glass disclosed in this patent has aesthetic appeal and heat insulation properties, but it lacks low-emissivity performance and has poor thermal insulation. Summary of the Invention

[0007] To solve the above-mentioned technical problems, this utility model provides a solar control coated glass with low radiation performance. It has low light transmittance, low shading, and low radiation performance. It can be used as a single piece and can replace traditional heat-reflective and offline single-silver glass.

[0008] The technical solution adopted by this utility model is as follows:

[0009] A solar control coated glass with low emissivity includes a glass substrate and a bottom dielectric layer, a second dielectric layer, a first barrier layer, a low emissivity functional layer, a second barrier layer, a third dielectric layer, a fourth dielectric layer, and a fifth dielectric layer sequentially stacked on one surface of the glass substrate; the low emissivity functional layer is a titanium oxide layer.

[0010] Furthermore, the thickness of the low-emissivity functional layer is 10nm~60nm.

[0011] The bottom dielectric layer is a silicon nitride layer; the thickness of the bottom dielectric layer is 5nm~80nm.

[0012] The second dielectric layer is a silicon dioxide layer; the thickness of the second dielectric layer is 50nm~100nm.

[0013] The first barrier layer is a NiCr layer; the thickness of the first barrier layer is 5nm~15nm.

[0014] The second barrier layer is a NiCr layer; the thickness of the second barrier layer is 5nm~15nm.

[0015] The third dielectric layer is a silicon dioxide layer; the thickness of the third dielectric layer is 30nm~80nm.

[0016] The fourth dielectric layer is a silicon nitride layer; the thickness of the fourth dielectric layer is 20nm~80nm.

[0017] The fifth dielectric layer is a zirconium oxide layer; the thickness of the fifth dielectric layer is 5nm~20nm.

[0018] The glass substrate is a float glass substrate of various colors, preferably a clear glass or ultra-clear glass substrate.

[0019] After magnetron sputtering coating, the solar control coated glass with low emissivity needs to undergo heat treatment at temperatures above 400°C, such as tempering, semi-tempering, bending, and hot bending, to achieve its low emissivity effect.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. Innovative film structure design: A layered collaborative film system is adopted, in which the lower dielectric layer and the base second dielectric layer serve as anti-reflective film layers, which not only achieve a stable connection between the glass and the functional layer, but also effectively alleviate the internal stress of the low-emissivity film; the first and second barrier layers can achieve diverse shading effects by precisely controlling their thickness; the third dielectric layer dominates the scratch resistance, wear resistance and corrosion resistance of the product, while the fourth dielectric layer focuses on optimizing the toughness of the film layer. Each layer has a clear division of labor and works together to improve the overall performance.

[0022] 2. Dual Upgrades in Materials and Processes: An innovative titanium dioxide layer is embedded between the first and second barrier layers as a low-emissivity functional layer. This design significantly improves the optical performance of the glass and precisely adjusts color performance without affecting the internal pressure of the film. Simultaneously, the fifth dielectric layer uses a high-hardness zirconium oxide layer, greatly enhancing the film's hardness, effectively reducing the difficulty of off-site processing of double-silver products, minimizing defective product losses during production, and significantly reducing costs and improving economic efficiency.

[0023] 3. Superior energy-saving performance: By precisely controlling the deposition thickness of the low-emissivity functional layer, the glass emissivity is stably controlled within the range of 0.06-0.26, significantly improving the thermal insulation effect, which is in line with the current trend of green and energy-saving building development and provides strong technical support for achieving energy conservation and emission reduction goals.

[0024] 4. Filling a Market Gap: Through the precise coordination of the dielectric layer, low-emissivity functional layer, and barrier layer, this innovative design integrates sunshade and thermal insulation performance into one. Compared to traditional products on the market that only offer single sunshade functionality, this invention fills the market gap for high-performance solar control coated glass, greatly enriching the selection of architectural glass products and possessing a significant competitive advantage in the market. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the colorless temperable energy-saving coated glass provided by this utility model, wherein 10-glass substrate, 201-bottom dielectric layer, 202-second dielectric layer, 203-first barrier layer, 204-low radiation functional layer, 205-second barrier layer, 206-third dielectric layer, 207-fourth dielectric layer, and 208-fifth dielectric layer. Detailed Implementation

[0026] This utility model provides a solar control coated glass with low radiation performance, comprising a glass substrate 10 and a bottom dielectric layer 201, a second dielectric layer 202, a first barrier layer 203, a low radiation functional layer 204, a second barrier layer 205, a third dielectric layer 206, a fourth dielectric layer 207, and a fifth dielectric layer 208 sequentially stacked on one surface of the glass substrate; the low radiation functional layer is a titanium oxide layer.

[0027] The thickness of the low-emissivity functional layer is 10nm~60nm.

[0028] The bottom dielectric layer is a silicon nitride layer; the thickness of the bottom dielectric layer is 5nm~80nm.

[0029] The second dielectric layer is a silicon dioxide layer; the thickness of the second dielectric layer is 50nm~100nm.

[0030] The first barrier layer is a NiCr layer; the thickness of the first barrier layer is 5nm~15nm.

[0031] The second barrier layer is a NiCr layer; the thickness of the second barrier layer is 5nm~15nm.

[0032] The third dielectric layer is a silicon dioxide layer; the thickness of the third dielectric layer is 30nm~80nm.

[0033] The fourth dielectric layer is a silicon nitride layer; the thickness of the fourth dielectric layer is 20nm~80nm.

[0034] The fifth dielectric layer is a zirconium oxide layer; the thickness of the fifth dielectric layer is 5nm~20nm.

[0035] The glass substrate is a float glass substrate of various colors, preferably a clear glass or ultra-clear glass substrate.

[0036] The production process is as follows:

[0037] 1. Use 6mm clear glass as the glass substrate, and clean and dry it with deionized water.

[0038] 2. The underlying dielectric layer 201 was deposited by sputtering in an argon-nitrogen atmosphere using a medium-frequency power supply and a rotating cathode. The atmosphere was Ar:N2=600:650sccm.

[0039] 3. The second dielectric layer 202 was sputtered and deposited in an argon-oxygen atmosphere using a medium-frequency power supply and a rotating cathode. The atmosphere was Ar:O2=350:500sccm.

[0040] 4. The first barrier layer 203 was deposited by planar cathode sputtering with a DC power supply in an atmosphere of Ar=1000:sccm.

[0041] 5. A low-emissivity functional layer 204 was sputtered in an argon-oxygen atmosphere using a medium-frequency power supply and a rotating cathode, with the atmosphere being Ar:O2=1000:50sccm.

[0042] 6. A second barrier layer 205 was deposited by planar cathode sputtering with a DC power supply in an atmosphere of Ar=1000:sccm.

[0043] 7. The third dielectric layer 206 was sputtered and deposited in an argon-nitrogen atmosphere using a medium-frequency power supply and a rotating cathode, with the atmosphere being Ar:O2=1000:800sccm.

[0044] 8. The fourth dielectric layer 207 was sputtered in an argon-oxygen atmosphere using a medium-frequency power supply and a rotating cathode. The atmosphere was Ar:N2 = 600:700 sccm.

[0045] 9. The fifth dielectric layer 208 was sputtered in an argon-nitrogen atmosphere using a medium-frequency power supply and a rotating cathode, with the atmosphere being Ar:N2=600:700sccm.

[0046] 10. After sputtering, the glass is cut, ground and tempered. The tempering temperature in the double-chamber furnace is 680℃ and the heating time is 280s, which will produce a solar control coated glass with low emissivity.

[0047] The present invention will now be described in detail with reference to the embodiments.

[0048] The film structure and thickness of the colorless temperable energy-saving coated glass provided in each embodiment and comparative example are shown in Tables 1-3.

[0049] Table 1. Structure of the coated glass in Example 1

[0050]

[0051] Table 2 shows the structure of the coated glass in Example 2.

[0052]

[0053] Table 3. Structure of the coated glass in Example 3

[0054]

[0055] Table 4. Structure of the coated glass in Example 4

[0056]

[0057] The performance of the coated glass in the above embodiments and comparative examples is shown in Table 5.

[0058] Table 5

[0059]

[0060] As can be seen from Table 5, the emissivity of the coated glass provided by this utility model is stably controlled in the range of 0.06-0.26, which significantly improves the heat insulation effect.

[0061] The above detailed description of a solar control coated glass with low radiation performance, with reference to the embodiments, is illustrative rather than limiting. Several embodiments may be listed within the defined scope. Therefore, changes and modifications without departing from the overall concept of this utility model should be within the protection scope of this utility model.

Claims

1. A solar control coated glass having low emissivity properties, characterized in that, It includes a glass substrate and a bottom dielectric layer, a second dielectric layer, a first barrier layer, a low-emissivity functional layer, a second barrier layer, a third dielectric layer, a fourth dielectric layer, and a fifth dielectric layer sequentially stacked on one surface of the glass substrate; the low-emissivity functional layer is a titanium oxide layer.

2. The solar control coated glass with low emissivity according to claim 1, characterized in that, The thickness of the low-emissivity functional layer is 10nm~60nm.

3. The solar control coated glass with low emissivity according to claim 1 or 2, characterized in that, The bottom dielectric layer is a silicon nitride layer; the thickness of the bottom dielectric layer is 5nm~80nm.

4. The solar control coated glass with low emissivity according to claim 1 or 2, characterized in that, The second dielectric layer is a silicon dioxide layer; the thickness of the second dielectric layer is 50nm~100nm.

5. The solar control coated glass with low emissivity according to claim 1 or 2, characterized in that, The first barrier layer is a NiCr layer; the thickness of the first barrier layer is 5nm~15nm.

6. The solar control coated glass with low emissivity according to claim 1 or 2, characterized in that, The second barrier layer is a NiCr layer; the thickness of the second barrier layer is 5nm~15nm.

7. The solar control coated glass with low emissivity according to claim 1 or 2, characterized in that, The third dielectric layer is a silicon dioxide layer; the thickness of the third dielectric layer is 30nm~80nm.

8. The solar control coated glass with low emissivity according to claim 1 or 2, characterized in that, The fourth dielectric layer is a silicon nitride layer; the thickness of the fourth dielectric layer is 20nm~80nm.

9. The solar control coated glass with low emissivity according to claim 1 or 2, characterized in that, The fifth dielectric layer is a zirconium oxide layer; the thickness of the fifth dielectric layer is 5nm~20nm.

10. The solar control coated glass with low emissivity according to claim 1 or 2, characterized in that, The glass substrate is a float glass substrate.

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