Silver white three-silver coated glass

Abstract

The invention discloses silver white three-silver coated glass. The invention relates to an anti-oxidation glass which sequentially comprises a glass substrate, a base layer, a first dielectric anti-oxidation layer, a first silver layer, a second dielectric anti-oxidation layer, a first dielectric interference layer, a third dielectric anti-oxidation layer, a second silver layer, a gold layer or a copper layer, a first alloy absorption layer, a fourth dielectric anti-oxidation layer, a second dielectric interference layer and a fifth dielectric anti-oxidation layer from bottom to top. A third silver layer, a second alloy absorption layer, a sixth dielectric anti-oxidation layer, a first dielectric protection layer and a second dielectric protection layer; the second dielectric anti-oxidation layer is an AZO layer; after the hollow glass is prepared from the hollow glass, the reflectivity is more than 30%, the heat gain coefficient is 0.20-0.25, the hollow glass has a very good energy-saving effect, and meanwhile, compared with a high-reflectivity three-silver product in the market, the hollow glass has higher transmittance, so that indoor observation scenery is more natural, the photo-thermal ratio is higher, and the selection space of the reflectivity and the transmittance is larger.

Description

Technical Field

[0001] The invention belongs to the technical field of glass, and in particular relates to silvery white triple-silver coated glass. Background Art

[0002] In the field of architecture, highly reflective coated glass is often used as curtain wall material to improve the energy efficiency and aesthetics of buildings. Its high reflectivity can effectively reflect sunlight and infrared rays, lower indoor temperature, and reduce air conditioning energy consumption. Secondly, highly reflective glass has one-way perspective, which can protect internal privacy while allowing the outside world to be clearly observed indoors. In order to avoid light pollution, many areas, especially those next to roads, require a reflectivity limit of less than 20%, but in many areas, such as laboratories with a high degree of confidentiality and the seaside, the reflectivity is required to reach about 30%, which not only has a privacy function but also does not cause visual fatigue to observation.

[0003] In the development process of triple silver high reflectivity, due to the large number of metal layers, the transmittance of the hollow glass is above 40%, and the color meets the market requirements, but it is very difficult to reach a reflectivity of more than 30%. There are various colors of triple silver coated glass on the market, but there is no silvery white triple silver coated glass with a reflectivity of more than 30% after hollowing. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a silver-white triple-silver coated glass, which has a reflectivity of more than 30% and a heat gain coefficient of 0.20-0.25 after being made into insulating glass, and has a very good energy-saving effect. At the same time, compared with the high-reflective triple-silver products on the market, it has a higher transmittance, making the indoor observation scenery more natural, a higher light-to-heat ratio, and a larger selection space for reflectivity and transmittance.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] A silvery white triple-silver coated glass comprises, from bottom to top, a glass substrate, a primer layer, a first dielectric anti-oxidation layer, a first silver layer, a second dielectric anti-oxidation layer, a first dielectric interference layer, a third dielectric anti-oxidation layer, a second silver layer, a gold layer or a copper layer, a first alloy absorption layer, a fourth dielectric anti-oxidation layer, a second dielectric interference layer, a fifth dielectric anti-oxidation layer, a third silver layer, a second alloy absorption layer, a sixth dielectric anti-oxidation layer, a first dielectric protection layer, and a second dielectric protection layer; the second dielectric anti-oxidation layer is an AZO layer.

[0007] Furthermore, the thicknesses of the first silver layer, the second silver layer and the third silver layer are 4.5-6 nm, 18-20 nm and 15-20 nm respectively.

[0008] The thickness of the gold layer or copper layer is 2-5 nm.

[0009] The base layer is a non-metallic nitride layer; the thickness of the base layer is 39-48 nm; the first dielectric anti-oxidation layer is a metal oxide layer; the thickness of the first dielectric anti-oxidation layer is 8-10 nm.

[0010] The thickness of the second dielectric anti-oxidation layer is 8-10 nm.

[0011] The first dielectric interference layer is a metal oxide layer or a non-metal nitride layer, and its thickness is 52-65 nm; the third dielectric anti-oxidation layer is a metal oxide layer, and its thickness is 8-10 nm.

[0012] The first alloy absorption layer is a metal alloy layer or a metal oxide layer, and its thickness is 0.5-2.0 nm; the fourth dielectric anti-oxidation layer is a metal oxide layer, and its thickness is 8-10 nm.

[0013] The second dielectric interference layer is a metal oxide layer or a non-metal nitride layer, and its thickness is 67-80 nm; the fifth dielectric anti-oxidation layer is a metal oxide layer, and its thickness is 5-10 nm.

[0014] The second alloy absorption layer is a metal alloy layer or a metal oxide layer, and its thickness is 0.3-2.0 nm; the sixth dielectric anti-oxidation layer is a metal oxide layer, and its thickness is 8-10 nm.

[0015] The first dielectric protection layer and the second dielectric protection layer are both metal oxide layers, non-metal oxide layers, metal nitride layers or non-metal nitride layers, and their thicknesses are 25-33 nm and 3-7 nm respectively.

[0016] The silver-white triple-silver coated glass provided by the present invention is composed of a total of seventeen film layers. The color of the silver-white glass is adjusted to be silver-white by matching the film layers and controlling the thickness of the film layers. After being made into hollow glass, the reflectivity is above 30%, the heat gain coefficient is 0.20-0.25, and it has a very good energy-saving effect. At the same time, compared with the high-reflective triple-silver products on the market, it has a higher transmittance, making the indoor observation scenery more natural, a higher light-to-heat ratio, and a larger selection space for reflectivity and transmittance.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Use the triple silver structure to improve the light-to-heat ratio of the product's thermal performance, adjust the thickness of the film layer to fully utilize the film layer's anti-reflection and anti-transmittance properties, and reduce the impact of increased absorption rate caused by thickening of the single metal layer.

[0019] 2. Use the AZO layer as the second dielectric anti-oxidation layer on top of the first silver layer, optimize the film structure from the perspective of debugging, and improve the optical performance of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the silvery white triple-silver coated glass in the present invention;

[0021] Among them, 1-glass substrate, 2-base layer, 3-first dielectric anti-oxidation layer, 4-first silver layer, 5-second dielectric anti-oxidation layer, 6-first dielectric interference layer, 7-third dielectric anti-oxidation layer, 8-second silver layer, 9-gold layer or copper layer, 10-first alloy absorption layer, 11-fourth dielectric anti-oxidation layer, 12-second dielectric interference layer, 13-fifth dielectric anti-oxidation layer, 14-third silver layer, 15-second alloy absorption layer, 16-sixth dielectric anti-oxidation layer, 17-first dielectric protection layer, 18-second dielectric protection layer. DETAILED DESCRIPTION

[0022] The invention provides a silvery-white triple-silver coated glass, which comprises, from bottom to top, a glass substrate, a primer layer, a first dielectric anti-oxidation layer, a first silver layer, a second dielectric anti-oxidation layer, a first dielectric interference layer, a third dielectric anti-oxidation layer, a second silver layer, a gold layer or a copper layer, a first alloy absorption layer, a fourth dielectric anti-oxidation layer, a second dielectric interference layer, a fifth dielectric anti-oxidation layer, a third silver layer, a second alloy absorption layer, a sixth dielectric anti-oxidation layer, a first dielectric protection layer, and a second dielectric protection layer.

[0023] The thickness of the glass substrate is 2-19 mm.

[0024] The bottom layer is a non-metallic nitride layer or a metal oxide layer, such as Si3N4, TiO x , any one of ZnSnO; its thickness is 39 to 48 nm.

[0025] The first dielectric anti-oxidation layer is a metal oxide layer, such as ZnO or AZO; and its thickness is 8-10 nm.

[0026] The thickness of the first silver layer is 4.5-6 nm.

[0027] The second dielectric anti-oxidation layer is an AZO layer, and its thickness is 8-10 nm.

[0028] The first dielectric interference layer is a metal oxide layer or a non-metal nitride layer, such as ZnSnO or Si3N4; and its thickness is 52-65 nm.

[0029] The third dielectric anti-oxidation layer is a metal oxide layer, such as AZO or ZnO; and its thickness is 8-10 nm.

[0030] The thickness of the second silver layer is 18-20 μm.

[0031] The thickness of the gold layer or copper layer is 2-5 nm.

[0032] The first alloy absorption layer is a metal alloy layer or a metal oxide layer, such as NiCr, NiCrOx; and its thickness is 0.5-2.0 nm.

[0033] The fourth dielectric anti-oxidation layer is a metal oxide layer, such as AZO or ceramic TiOx; and its thickness is 8-10 nm.

[0034] The second dielectric interference layer is a metal oxide layer or a non-metal nitride layer, such as ZnSnO or Si3N4; and its thickness is 67-80 nm.

[0035] The fifth dielectric anti-oxidation layer is a metal oxide layer, such as ZnO or AZO; and its thickness is 5-10 nm.

[0036] The thickness of the third silver layer is 15-20 nm.

[0037] The second alloy absorption layer is a metal alloy layer or a metal oxide layer, such as NiCr, NiCrOx; and its thickness is 0.3-2.0 nm.

[0038] The sixth dielectric anti-oxidation layer is a metal oxide layer, such as AZO or ceramic TiOx; and its thickness is 8-10 nm.

[0039] The first dielectric protective layer is a metal oxide layer or a non-metal oxide layer, such as SiO2, TiO x , or ZrO2; its thickness is 25~33nm.

[0040] The second dielectric protective layer is a metal oxide layer, a non-metal oxide layer, a metal nitride layer or a non-metal nitride layer, such as Si3N4, SiO2, TiO x , or ZrO2; its thickness is 3 to 7 nm.

[0041] The present invention is described in detail below with reference to the embodiments.

[0042] Example 1

[0043] A silvery white triple-silver coated glass, the layers and thicknesses from bottom to top are shown in Table 1.

[0044] Table 1

[0045]

[0046]

[0047] Example 2

[0048] A silver-white triple-silver coated glass, wherein the first and second dielectric layers are made of silicon nitride, and the layers and thicknesses from bottom to top are shown in Table 2.

[0049] Table 2

[0050]

[0051]

[0052] Example 3

[0053] A silvery white triple-silver coated glass, with titanium oxide or zinc tin oxide as the base layer, and the layers and thicknesses from bottom to top are shown in Table 3.

[0054] Table 3

[0055]

[0056]

[0057] Comparative Example 1

[0058] A silvery white triple-silver coated glass, the layers and thicknesses from bottom to top are shown in Table 4.

[0059] Table 4

[0060]

[0061]

[0062] The color comparison of a single piece of silver-white triple-silver coated glass in the above-mentioned embodiments and comparative examples is shown in Table 5.

[0063] Table 5 Colors of single-piece triple-silver coated glass

[0064]

[0065] It can be seen from Table 5 that the triple-silver low-emissivity film prepared on 6mm white glass of the present invention has a silvery white glass surface, a neutral transmission color, a visible light transmittance between 45-52%, and a reflectivity between 26-30%; the transmittance and reflectivity of each embodiment are higher than those of the comparative example.

[0066] The properties of the insulating glass made of triple-silver coated glass in the above embodiments and comparative examples are shown in Table 6. The structure of the insulating glass is: 6mm triple-silver coated glass (second side coating) / 12mm air space / 6mm clear glass.

[0067] Table 6

[0068]

[0069] As can be seen from Table 6, Examples 1, 2, and 3 have higher light-to-heat ratios than Comparative Column 1, superior product performance, better reflectivity and lighting effects, relatively low internal reflection colors, and better indoor observation effects. Under the premise of more than 40% transmittance, there is a large space for selecting reflectivity and transmittance.

[0070] The detailed description of a silvery white triple-silver coated glass with reference to the above embodiment is illustrative rather than restrictive, and several embodiments can be listed according to the limited scope. Therefore, changes and modifications without departing from the overall concept of the present invention should fall within the scope of protection of the present invention.

Claims

1. A silvery white triple-silver coated glass, characterized in that: The triple-silver coated glass includes, from bottom to top, a glass substrate, a base layer, a first dielectric anti-oxidation layer, a first silver layer, a second dielectric anti-oxidation layer, a first dielectric interference layer, a third dielectric anti-oxidation layer, a second silver layer, a gold layer or a copper layer, a first alloy absorption layer, a fourth dielectric anti-oxidation layer, a second dielectric interference layer, a fifth dielectric anti-oxidation layer, a third silver layer, a second alloy absorption layer, a sixth dielectric anti-oxidation layer, a first dielectric protective layer, and a second dielectric protective layer; the second dielectric anti-oxidation layer is an AZO layer.

2. The silvery white triple-silver coated glass according to claim 1, characterized in that: The thicknesses of the first silver layer, the second silver layer and the third silver layer are 4.5-6 nm, 18-20 nm and 15-20 nm respectively.

3. The silvery white triple-silver coated glass according to claim 1, characterized in that: The thickness of the gold layer or copper layer is 2-5 nm.

4. The silvery white triple-silver coated glass according to claim 1, characterized in that: The base layer is a non-metallic nitride layer; the thickness of the base layer is 39-48 nm; the first dielectric anti-oxidation layer is a metal oxide layer; the thickness of the first dielectric anti-oxidation layer is 8-10 nm.

5. The silvery white triple-silver coated glass according to claim 1, characterized in that: The thickness of the second dielectric anti-oxidation layer is 8-10 nm.

6. The silvery white triple-silver coated glass according to claim 1, characterized in that: The first dielectric interference layer is a metal oxide layer or a non-metal nitride layer, and its thickness is 52-65 nm; the third dielectric anti-oxidation layer is a metal oxide layer, and its thickness is 8-10 nm.

7. The silvery white triple-silver coated glass according to claim 1, characterized in that: The first alloy absorption layer is a metal alloy layer or a metal oxide layer, and its thickness is 0.5-2.0 nm; the fourth dielectric anti-oxidation layer is a metal oxide layer, and its thickness is 8-10 nm.

8. The silvery white triple-silver coated glass according to claim 1, characterized in that: The second dielectric interference layer is a metal oxide layer or a non-metal nitride layer, and its thickness is 67-80 nm; the fifth dielectric anti-oxidation layer is a metal oxide layer, and its thickness is 5-10 nm.

9. The silvery white triple-silver coated glass according to claim 1, characterized in that: The second alloy absorption layer is a metal alloy layer or a metal oxide layer, and its thickness is 0.3-2.0 nm; the sixth dielectric anti-oxidation layer is a metal oxide layer, and its thickness is 8-10 nm.

10. The silvery white triple-silver coated glass according to claim 1, characterized in that: The first dielectric protection layer and the second dielectric protection layer are both metal oxide layers, non-metal oxide layers, metal nitride layers or non-metal nitride layers, and their thicknesses are 25-33 nm and 3-7 nm respectively.

Images