CN108726890B - Coated glass with high transmittance and capable of being used in single piece - Google Patents

Abstract

The invention relates to the technical field of glass production, in particular to coated glass with high transmittance and capable of being used singly, which comprises a glass substrate and a composite film layer plated on one side surface of the glass substrate, wherein the composite film layer comprises a first anti-reflection dielectric film layer, a first high-temperature-resistant flame-retardant film layer, a first metal isolating film layer, a first functional film layer, a second metal isolating film layer, a second anti-reflection dielectric film layer, a second high-temperature-resistant flame-retardant film layer, a third metal isolating film layer, a second functional film layer, a fourth metal isolating film layer and a protective dielectric film layer which are sequentially deposited outwards from the glass substrate.

Description

High transmittance coated glass that can be used as a single piece

Technical field

The invention relates to the technical field of glass production, and in particular to a high transmittance coated glass that can be used as a single piece.

Background technique

The low-emissivity coated glass currently on the market with the best performance and the highest market share includes at least one silver-type metal functional layer. The main function of the silver-type metal functional layer is to reduce most of the incident IR (infrared) radiation. It is reflected back to the source of heat radiation. For example, in summer, it can block outdoor solar radiation from entering the room to reduce air conditioning costs; in winter, it can prevent indoor heating from flowing to the outside through the glass, thereby reducing heating costs. This plays a role in energy conservation and environmental protection. However, this kind of film is very easy to be oxidized, sulfurized, etc., so the film surface of this type of silver-based low-emissivity coated glass must be used on the hollow inner surface of the insulating glass to avoid being damaged by exposure to the air.

In the current solar control single-layer glass with niobium as the functional layer, the only niobium functional layer is deposited on a separate glass substrate. Only when the thickness of the functional layer of such products is thick (for example, about at least 10 nanometers or higher) can the value of the heat transfer coefficient U specified by the current national standards be met. However, when the functional layer is thick, due to non-selective absorption of incident radiant energy, the light transmittance of this glass is very low (generally less than 30%, or even less than 20%).

In view of such characteristics, it is difficult for existing products to obtain an acceptable heat transfer coefficient U from this film layer while maintaining a sufficiently high (light transmittance greater than 40%, preferably greater than 50%) solar transmittance. .

Contents of the invention

The invention provides a high transmittance coated glass that can be used as a single piece, which can solve the problem of low light transmittance while ensuring that the heat transfer coefficient is sufficiently low.

In order to achieve the above object, the technical solution adopted by the present invention is: a high transmittance coated glass that can be used as a single piece, including a glass substrate and a composite film layer plated on one side of the glass substrate. The composite film The layers include a first anti-reflective dielectric film layer, a first high temperature resistant flame retardant film layer, a first metal isolation film layer, a first functional film layer, a second metal isolation film layer, and a first metal isolation film layer, which are sequentially deposited outward from the glass substrate. A second anti-reflective dielectric film layer, a second high temperature resistant flame retardant film layer, a third metal isolation film layer, a second functional film layer, a fourth metal isolation film layer and a protective dielectric film layer.

Further, the first functional film layer and the second functional film layer are metal niobium layers or niobium nitride layers.

Further, the first functional film layer is 15-60nm; the second functional film layer is 20-60nm.

Further, the first anti-reflective dielectric film layer/second anti-reflective dielectric film layer is any one of the ZnOx layer and the ZnSnOx layer or a composite layer of the two.

Further, the thickness of the first anti-reflection dielectric film layer is 20-100 nm; the thickness of the second anti-reflection dielectric film layer is 30-90 nm.

Further, the first high temperature resistant flame retardant film layer/the second high temperature resistant flame retardant film layer is an SbOx layer.

Further, the thickness of the first high temperature resistant flame retardant film layer is 25-55nm; the thickness of the second high temperature resistant flame retardant film layer is 20-50nm.

Further, the first metal isolation film layer/second metal isolation film layer/third metal isolation film layer/fourth metal isolation film layer is any one of NiCrOx layer, NiCr layer, Ti layer and TiOx layer. Or any number of composite layers.

Further, the thickness of the first metal isolation film layer is 0.5-5nm; the thickness of the second metal isolation film layer is 0.5-6nm; the thickness of the third metal isolation film layer is 0.5-5nm; The thickness of the fourth metal isolation film layer is 0.5-6nm.

Further, the protective dielectric film layer is any one of SiNx layer, SiOx layer, SiNxOy layer and TiOx layer or a composite layer of any two layers, and the thickness of the protective dielectric film layer is 20-60 nm.

After adopting the above technical solution, the present invention has the following advantages compared with the existing technology:

1. By optimizing the structure and thickness parameters of the composite film layer, the glass product of the present invention has the effects of low heat transfer coefficient and high light transmittance. Compared with the coated glass with only a single functional film layer, it has Lower emissivity and higher selection coefficient.

2. The functional film layer of the present invention uses metal niobium or niobium nitride. Metal niobium (Nb) is a particularly stable material that can withstand various heat treatments without damaging its optical properties; niobium nitride (NbN) has high chemical properties. Stability level; using the above two materials as functional film layers allows glass products to be used as a single piece.

3. The first anti-reflective dielectric film layer and the second anti-reflective dielectric film layer of the present invention have a higher refractive index to offset the absorption of the first functional film layer and the second functional film layer, making the light transmittance of the glass product of the present invention The pass rate can reach 40% and above, and the product appearance is clear and transparent, which can ensure good heat insulation and heat preservation effects, and meets the needs of consumers for natural and environmental protection.

4. The present invention uses the flame-retardant material antimony oxide as the coating material, which improves the high-temperature impact resistance of the film layer and solves the problem of many appearance defects of tempered glass products.

Description of drawings

Figure 1 is a schematic structural diagram of the high transmittance coated glass of the present invention that can be used as a single piece.

in,

100. Glass matrix;

200. Composite film layer;

201. The first anti-reflective dielectric film layer; 202. The first high temperature resistant flame retardant film layer; 203. The first metal isolation film layer; 204. The first functional film layer; 205. The second metal isolation film layer; 206. Second anti-reflective dielectric film layer; 207, second high temperature resistant flame retardant film layer; 208, third metal isolation film layer; 209, second functional film layer; 210, fourth metal isolation film layer; 211, protective dielectric film layer .

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and examples.

As shown in Figure 1, a high transmittance coated glass that can be used as a single piece includes a glass substrate 100 and a composite film layer 200 coated on one side of the glass substrate 100. The composite film layer 200 includes a film extending from the glass substrate 100 to The first anti-reflective dielectric film layer 201, the first high-temperature resistant flame retardant film layer 202, the first metal isolation film layer 203, the first functional film layer 204, the second metal isolation film layer 205, and the second anti-reflection film layer are deposited in sequence. Dielectric film layer 206, second high temperature resistant flame retardant film layer 207, third metal isolation film layer 208, second functional film layer 209, fourth metal isolation film layer 210 and protective dielectric film layer 211.

details as follows:

The first functional film layer 204 and the second functional film layer 209 are metal niobium layers or niobium nitride layers. The film materials of the first functional film layer 204 and the second functional film layer 209 may be the same or different. Preferably, the first functional film layer 204 is 15-60 nm; the second functional film layer 209 is 20-60 nm. The metal niobium (Nb) is a material that is particularly stable and can withstand various heat treatments without damaging its optical properties; niobium nitride (NbN) has a high level of chemical stability. The film material using metal niobium or niobium nitride as the first functional film layer 204 and the second functional film layer 209 is not easily oxidized or sulfurized. The composite film layer 200 of the glass product can be directly exposed to the air and can be used as a single piece. .

The first anti-reflective dielectric film layer 201 / the second anti-reflective dielectric film layer 206 is any one of the ZnOx layer and the ZnSnOx layer or a composite layer of the two. The first anti-reflective dielectric film layer 201 and the second anti-reflective dielectric film layer 201 The film materials of the anti-reflective dielectric film layer 206 may be the same or different. The thickness of the first anti-reflective dielectric film layer 201 is 20-100 nm; the thickness of the second anti-reflective dielectric film layer 206 is 30-90 nm.

The first anti-reflective dielectric film layer 201 and the second anti-reflective dielectric film layer 206 of the present invention use coating materials with better performance as protective materials, which can improve the high temperature resistance of the glass products, thereby protecting the first functional film layer 204 and the second anti-reflective dielectric film layer 206. The dual-functional film layer 209 plays a better protective role. In addition, the film materials of the first anti-reflective dielectric film layer 201 and the second anti-reflective dielectric film layer 206 of the present invention have a higher refractive index, which can offset the absorption of the first functional film layer 204 and the second functional film layer 209 , thereby improving the light transmittance of the glass product of the present invention, and the light transmittance can be as high as 40% or even higher. Glass products not only have a clear and transparent appearance, but also ensure good heat insulation and thermal insulation effects, meeting the needs of consumers for natural and environmental protection.

The first high temperature resistant flame retardant film layer 202/the second high temperature resistant flame retardant film layer 207 are SbOx layers. Preferably, the thickness of the first high temperature resistant flame retardant film layer 202 is 25-55 nm; the thickness of the second high temperature resistant flame retardant film layer 207 is 20-50 nm. The present invention uses the flame retardant material antimony oxide as the coating material, which not only improves the high temperature impact resistance of the first high temperature resistant flame retardant film layer 202 / the second high temperature resistant flame retardant film layer 207 , but also improves the impact resistance of the first functional film layer 204 And the protective effect of the second functional film layer 209 makes the heat resistance of the glass product better than that of traditional coated glass, and can reduce the appearance defects of the tempered glass product.

The first metal isolation film layer 203/the second metal isolation film layer 205/the third metal isolation film layer 208/the fourth metal isolation film layer 210 are any one of NiCrOx layer, NiCr layer, Ti layer and TiOx layer or In any multi-layer composite layer, the film materials of the first metal isolation film layer 203 , the second metal isolation film layer 205 , the third metal isolation film layer 208 and the fourth metal isolation film layer 210 may be the same or different. Preferably, the thickness of the first metal isolation film layer 203 is 0.5-5 nm; the thickness of the second metal isolation film layer 205 is 0.5-6 nm; the thickness of the third metal isolation film layer 208 is 0.5-5 nm; and the thickness of the fourth metal isolation film is 0.5-5 nm. The thickness of layer 210 is 0.5-6 nm.

The first functional film layer 204 and the second functional film layer 209 are protected by using any one or multiple composite layers among the NiCrOx layer, NiCr layer, Ti layer and TiOx layer, so that the film layer structure is more complete and combined. The force is higher, effectively ensuring the density of the film layer and the stability of the glass product.

In particular, when the first metal isolation film layer 203/the second metal isolation film layer 205/the third metal isolation film layer 208/the fourth metal isolation film layer 210 contain a NiCrOx layer, during the heating process, NiCrOx will affect some parts of the metal isolation film layer. The permeated oxygen has better affinity, thereby effectively capturing oxygen molecules and better protecting the first functional film layer 204 and the second functional film layer 209 . In addition, because the NiCrOx layer combines with oxygen, it can effectively increase the visible light transmittance of the product and improve the permeability of the glass product.

The protective dielectric film layer 211 is any one or a composite layer of any two of the SiNx layer, SiOx layer, SiNxOy layer and TiOx layer, and the thickness of the protective dielectric film layer 211 is 20-60 nm.

Each film layer in the composite film layer 200 of the present invention is deposited sequentially outward from one side surface of the glass substrate 100 using magnetron sputtering coating. The plating process needs to maintain an environment above 1.2×10 ^-4 Pa.

After the plating is completed, it is placed in a tempering furnace for tempering treatment. The heating temperature of the coated surface is 680-690°C. The heating temperature of the non-coated surface of the glass substrate 100 is slightly lower than the coated surface temperature, which is 670-680°C. This is because the composite film layer 200 of the present invention is a functional film layer, and its performance determines that the heat absorption capacity of the coated surface is weaker than that of the non-coated surface. In order to ensure that the heat absorption of the coated surface and the non-coated surface is consistent, avoid burning during tempering treatment. Deformation, the temperature of the coated surface needs to be higher than that of the non-coated surface, and the tempering treatment time is 570-590s.

The following are specific examples.

Example 1

In this example, the structure of the composite film layer 200 on the surface of the glass substrate 100 is: ZnSnOx/SbOx/NiCrOx/Nb/NiCrOx/ZnSnOx/SbOx/NiCrOx/Nb/NiCrOx/SiOx. The thickness of each film layer in the above composite film layer 200 is 39.2nm/28.6nm/0.8nm/26.5nm/0.8nm/

76.3nm/32.4nm/0.7nm/38.3nm/0.7nm/35.9nm.

For light transmission greater than 40% after tempering, the following results were obtained:

T=56.7%; heat transfer coefficient U=2.68W/m ^2.k

R=8.93; a*g=-4.43; b*g=-12.58 (glass surface);

R=6.98; a*f=-1.63; b*f=-11.5 (membrane surface).

Note: In this and the following examples, the outside of R is the reflectivity of the glass surface and the a*g and b*g values correspond to the color values of the glass surface, while the inside of R is the reflectivity of the film surface, a*f and The b*f value corresponds to the color value of the film surface.

Example 2

In this example, the structure of the composite film layer 200 on the surface of the glass substrate 100 is: ZnAlOx/SbOx/TiOx/

Nb/TiOx/ZnAlOx/SbOx/NiCrOx/Nb/NiCrOx/TiOx. The thickness of each film layer in the above composite film layer 200 is 38.3nm/31.3nm/1.3nm/22nm/1.5nm/65.2nm/28.7nm/0.9nm/53.2nm/

1.1nm/22.3nm.

For light transmission greater than 40% after tempering, the following results were obtained:

T=42.3%; heat transfer coefficient U=2.53W/m ^2.k

R=18.52; a*g=-2.7; b*g=-8.25 (glass surface);

R=11.6; a*f=3.6; b*f=12.1 (membrane surface).

Example 3

In this example, the structure of the composite film layer 200 on the surface of the glass substrate 100 is: ZnSnOx/SbOx/Ti/NbN/

Ti/ZnSnOx/SbOx/NiCrOx/Nb/NiCrOx/SiNxOy. The thickness of each film layer in the above composite film layer 200 is 42nm/44.2 nm/0.9nm/25.6nm/0.9nm/68.4nm/34.1/0.9 nm/45.8nm/0.9 nm/42.3nm.

For light transmission greater than 40% after tempering, the following results were obtained:

T=48.9%; heat transfer coefficient U=2.59W/m ^2.k

R=18.43; a*g=-3.9; b*g=-7.9 (glass surface);

R=16.9; a*f=6.2; b*f=-18.6 (membrane surface).

It can be seen from the above embodiments that the high transmittance coated glass of the present invention that can be used as a single piece has both a low heat transfer coefficient and a high light transmittance, and the glass product has a clear and transparent appearance, and can pass through Color is neutral.

The above embodiments are only for illustrating the technical concepts and characteristics of the present invention. Their purpose is to enable those familiar with this technology to understand the content of the present invention and implement it accordingly. They cannot limit the scope of protection of the present invention. All equivalent changes or modifications made based on the spirit and essence of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. The utility model provides a coated glass that high transmissivity can monolithic use, includes glass base member and plates and locate the compound rete of glass base member one side surface, its characterized in that:

the composite film layer comprises a first anti-reflection dielectric film layer, a first high-temperature-resistant flame-retardant film layer, a first metal isolation film layer, a first functional film layer, a second metal isolation film layer, a second anti-reflection dielectric film layer, a second high-temperature-resistant flame-retardant film layer, a third metal isolation film layer, a second functional film layer, a fourth metal isolation film layer and a protective dielectric film layer which are sequentially deposited outwards from the glass substrate;

the first functional film layer and the second functional film layer are metal niobium layers or niobium nitride layers;

the first functional film layer is 15-60nm; the second functional film layer is 20-60nm;

the first anti-reflection dielectric film layer/the second anti-reflection dielectric film layer is any one or a composite layer of a ZnSnOx layer and a ZnSnOx layer;

the thickness of the first anti-reflection dielectric film layer is 20-100nm; the thickness of the second anti-reflection dielectric film layer is 30-90nm.

2. The high transmittance monolithic coated glass according to claim 1, wherein:

the first high-temperature-resistant flame-retardant film layer/the second high-temperature-resistant flame-retardant film layer is an SbOx layer.

3. A high transmittance monolithic coated glass according to claim 2, wherein:

the thickness of the first high-temperature-resistant flame-retardant film layer is 25-55nm; the thickness of the second high-temperature-resistant flame-retardant film layer is 20-50nm.

4. The high transmittance monolithic coated glass according to claim 1, wherein:

the first metal isolating film layer/the second metal isolating film layer/the third metal isolating film layer/the fourth metal isolating film layer is any one or a plurality of composite layers of a NiCrOx layer, a NiCr layer, a Ti layer and a TiOx layer.

5. The high transmittance monolithic coated glass as recited in claim 4, wherein:

the thickness of the first metal isolation film layer is 0.5-5nm; the thickness of the second metal isolation film layer is 0.5-6nm; the thickness of the third metal isolation film layer is 0.5-5nm; the thickness of the fourth metal isolation film layer is 0.5-6nm.

6. The high transmittance monolithic coated glass according to claim 1, wherein:

the protective dielectric film layer is any one layer or any two layers of a SiNx layer, a SiOx layer, a SiNxOy layer and a TiOx layer, and the thickness of the protective dielectric film layer is 20-60nm.