WO2019157798A1

WO2019157798A1 - Double-silver low-emission coated glass and preparation method thereof

Info

Publication number: WO2019157798A1
Application number: PCT/CN2018/100325
Authority: WO
Inventors: 黄丽莎; 顾海波
Original assignee: 江苏奥蓝工程玻璃有限公司
Priority date: 2018-02-13
Filing date: 2018-08-14
Publication date: 2019-08-22
Also published as: CN108191261A

Abstract

Provided is a double-silver low-emission coated glass, comprising a glass substrate (1) and a plated film layer covering the surface of the glass substrate (1), said plated film layer comprising: a first film layer (2), the first film layer (2) being a titanium dioxide film; a second film layer (3), the second film layer (3) being a zinc-aluminum alloy film or a tin oxide film; a third film layer (4), the third film layer (4) being a silver film; a fourth film layer (5), the fourth film layer (5) being a nickel-chromium alloy film; a fifth film layer (6), the fifth film layer (6) being a titanium dioxide film; a sixth film layer (7), the sixth film layer (7) being a zinc-aluminum alloy film or a zinc oxide film; a seventh film layer (8), the seventh film layer (8) being a silver film; an eighth film layer (9), the eighth film layer (9) being a nickel-chromium alloy film; a ninth film layer (10), the ninth film layer (10) being a titanium nitride layer.

Description

Double silver low-emission coated glass and preparation method thereof

Technical field

The invention relates to the field of glass, in particular to a double-silver low-emission coated glass and a preparation method thereof.

Background technique

Low-emission coated glass is made of high-tech vacuum magnetron sputtering technology, which is coated with a nano-scale (1 nm = 0.000001 mm) thick silver film and a multilayer oxide anti-reflection coating on a large glass substrate. According to the requirements of different climatic environments, a series of different types of products with visible light transmittance between 40% and 80% can be produced. Insulating glass made of a low-emission coated glass and another glass-separated 12-mm gas layer has a magical energy-saving effect. In summer, it reflects and blocks near-infrared radiation in sunlight and far-infrared radiation in outdoor environments (far infrared radiation also It is called heat radiation to keep the room cool and comfortable; in winter it reflects and blocks the far infrared radiation from the indoor heating to maintain a warm indoor temperature. This is attributed to the perfect combination of the high infrared reflection properties of the silver film and the low convection properties of the hollow internal gas. The magic of low-emissivity glass is that it not only maintains good lighting function, but also effectively blocks direct solar radiation like heat-reflecting glass. What is more valuable is that it always acts to block heat radiation day or night.

Low-emission coated hollow glass can be used in large-scale construction glass curtain walls and glass doors and windows of residential buildings. It can also be used in public events such as exhibition halls and shopping malls with high requirements for see-through and heat insulation. It can also be used to keep low temperatures. The glass window of the freezer.

The low-emission coated glass can also be used as a laminated glass. In addition to having a certain function of blocking solar radiation, the glass also has excellent security performance and sound insulation performance. When the laminated glass is attacked by external force, the tough PVB film can absorb energy quickly and keep the glass fragments completely stuck together, so it can resist the damage of bullets, earthquakes, typhoons and hail, and prevent broken doors and broken windows. Criminal behavior into the room. PVB film also plays an important role in blocking sound waves, making laminated glass products reduce external noise by more than 30 decibels.

Low-e coated glass has the advantage of transmitting visible light and reflecting infrared light, which can significantly reduce the air conditioning energy consumption of the car and improve the comfort of the driver and passengers. Therefore, it is a green product in construction and transportation. There is a huge market demand on the tool. The core material of the silver-based low-emission coated glass is one or more layers of silver (Ag). Since the silver (Ag) layer is easily corroded and oxidized, it must be deposited on both the upper and lower sides of the silver (Ag) layer. Transparent dielectric layers that pass through visible light; these dielectric layers must have good compactness and high thermal stability to provide sufficient thermal, mechanical, and chemical protection for the silver layer. In the dielectric layer of the silver-based low-emission coated glass, the dielectric layer closest to the glass substrate and the dielectric layer above the silver layer farthest from the glass substrate are particularly important for the protection of the silver layer, in particular, the dielectric layer closest to the glass substrate must be capable of The osmosis of alkali metal ions and oxygen atoms from the glass is blocked at high temperatures. On the other hand, these dielectric layers can also perform anti-reflection effects on visible light, and combine with the silver layer to achieve better transmission and reflection characteristics of visible light.

At present, off-line low-emission coating can be divided into single-silver low-emission film and low-emission film according to the film structure. The latter has lower emissivity E and U values than the former, and the general single-silver Low-E film mainly relies on uniformity. The silver layer (Ag) distributed in the middle layer acts to reflect far-infrared heat radiation. The thickness of the entire film is about 45-75 nm. However, it is quite different. Its overall structure is relatively complicated, and there are mainly two or more layers of silver. Uniformly distributed between other protective metal oxides, the silver layer (Ag) in the film layer is overlapped in the intermediate layer, and the thickness of the silver-based film layer is between 5 and 12 nm to form a metal layer and an insulating layer. A special film structure that intersects each other.

Summary of the invention

The object of the present invention is to provide a double-silver low-emission coated glass and a preparation method thereof according to the deficiencies of the prior art.

The invention is achieved by the following technical solutions:

A dual silver low-emission coated glass comprising a glass substrate and a coating layer covering the surface of the glass substrate, the coating layer comprising:

a first film layer on a surface of the glass substrate, the first film layer being a titanium dioxide film;

a second film layer on a surface of the first film layer, the second film layer being a zinc aluminum alloy film or a tin oxide film;

a third film layer on a surface of the second film layer, the third film layer being a silver film;

a fourth film layer on a surface of the third film layer, the fourth film layer being a nickel-chromium alloy film;

a fifth film layer on a surface of the fourth film layer, the fifth film layer being a titanium dioxide film;

a sixth film layer on a surface of the fifth film layer, wherein the sixth film layer is a zinc aluminum alloy film or a zinc oxide film;

a seventh film layer on a surface of the sixth film layer, wherein the seventh film layer is a silver film;

An eighth film layer on a surface of the seventh film layer, wherein the eighth film layer is a nickel-chromium alloy film;

A ninth film layer is located on a surface of the eighth film layer, and the ninth film layer is a titanium nitride layer.

Preferably, the first film layer has a thickness of 20-30 nm, and the second film layer has a thickness of 10-20 nm.

Preferably, the third film layer has a thickness of 1-8 nm, and the fourth film layer has a thickness of 5-8 nm.

Preferably, the fifth film layer has a thickness of 55-60 nm, and the sixth film layer has a thickness of 10-20 nm.

Preferably, the seventh film layer has a thickness of 1-8 nm, and the eighth film layer has a thickness of 5-10 nm.

Preferably, the ninth film layer has a thickness of 20-30 nm.

The invention also discloses a preparation method of double silver low-emission coated glass, comprising the following steps:

Cleaning and drying the glass substrate to ensure that the surface of the glass substrate is clean;

Titanium dioxide, zinc-aluminum alloy film or zinc oxide, nickel-chromium alloy, titanium nitride, silver are respectively sintered on the target position of the vacuum sputtering chamber of the glass coating machine, and used;

The glass substrate is placed under vacuum, dehumidified and degassed, and the moisture and gas deposited on the surface of the glass are lowered to obtain a dehumidifying and degassing glass;

The dehumidified and degassed glass is sent into the vacuum magnetron sputtering chamber of the glass coating machine, and the first film layer, the second film layer and the third film layer are sequentially plated on the surface of the dehumidifying and degassing glass from bottom to top. And a fourth film layer, a fifth film layer, a sixth film layer, a seventh film layer, an eighth film layer, and a ninth film layer.

The ZnO film is a seed film layer of a silver film. This is because the ZnO film has a smooth property, which makes the upper silver film more uniform, improves the performance of the silver film, and enhances the transmittance and emissivity of the film system.

The beneficial effects of the invention are:

(1) The double-silver low-emission coated glass of the present invention uses titanium nitride having a low diffusion coefficient as a protective base layer, and the film layer can be subjected to tempering heat treatment at a high temperature, and the acid and alkali resistance is good.

(2) The double-silver low-emission coated glass of the present invention has a low shading coefficient and can effectively block the radiation of sunlight.

(3) The double-silver low-emission coated glass of the invention has high transmittance and good light transmittance.

DRAWINGS

In order to more clearly illustrate the technical solutions of the present invention, the drawings used in the embodiments or the prior art description will be briefly described below. It is obvious that the drawings in the following description are merely embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work.

1 is a schematic view showing a structure of a double silver low-emission coated glass according to the present invention;

Wherein, the reference numerals in the figure correspond to: 1-glass substrate, 2-first film layer, 3-second film layer, 4-third film layer, 5-four film layer, 6-fifth film layer , 7-sixth film layer, 8-seven film layer, 9-eighth film layer, 10-ninth film layer.

Detailed ways

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the accompanying drawings. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Example 1

Please refer to Figure 1. As shown, the present invention discloses a dual silver low-emission coated glass comprising a glass substrate 1 and a coating layer covering the surface of the glass substrate 1, the coating layer comprising:

a first film layer 2 on the surface of the glass substrate 1, the first film layer 2 being a titanium dioxide film;

a second film layer 3 on the surface of the first film layer 2, the second film layer 3 being a tin oxide film; enhancing adhesion between the film layers;

a third film layer 4 on the surface of the second film layer 3, the third film layer 4 being a silver film;

a fourth film layer 5 on the surface of the third film layer 4, the fourth film layer 5 being a nickel-chromium alloy film;

a fifth film layer 6, located on the surface of the fourth film layer 5, the fifth film layer 6 is a titanium dioxide film;

a sixth film layer 7, located on the surface of the fifth film layer 6, the sixth film layer 7 is a zinc-aluminum alloy film;

a seventh film layer 8, located on the surface of the sixth film layer 7, the seventh film layer 8 is a silver film;

The eighth film layer 9 is located on the surface of the seventh film layer 8, and the eighth film layer 9 is a nickel-chromium alloy film;

The ninth film layer 10 is located on the surface of the eighth film layer 9, and the ninth film layer 10 is a titanium nitride layer.

The thickness of the first film layer 2 is 20 nm, and the thickness of the second film layer 3 is 10 nm.

The thickness of the third film layer 4 is 3 nm, and the thickness of the fourth film layer 5 is 8 nm.

The fifth film layer 6 has a thickness of 55 nm, and the sixth film layer 7 has a thickness of 12 nm.

The seventh film layer 8 has a thickness of 6 nm, and the eighth film layer 9 has a thickness of 6 nm.

The ninth film layer 10 has a thickness of 20 nm.

Example 2

The present invention discloses a double-silver low-emission coated glass comprising a glass substrate 1 and a coating layer covering the surface of the glass substrate 1, the coating layer comprising:

a second film layer 3 on the surface of the first film layer 2, the second film layer 3 being a Zn-Al alloy film;

The thickness of the first film layer 2 is 25 nm, and the thickness of the second film layer 3 is 15 nm.

The third film layer 4 has a thickness of 5 nm, and the fourth film layer 5 has a thickness of 6 nm.

The fifth film layer 6 has a thickness of 58 nm, and the sixth film layer 7 has a thickness of 16 nm.

The seventh film layer 8 has a thickness of 4 nm, and the eighth film layer 9 has a thickness of 9 nm.

The ninth film layer 10 has a thickness of 28 nm.

Example 3

a sixth film layer 7, located on the surface of the fifth film layer 6, the sixth film layer 7 is a zinc oxide film;

The thickness of the first film layer 2 is 24 nm, and the thickness of the second film layer 3 is 18 nm.

The third film layer 4 has a thickness of 6 nm, and the fourth film layer 5 has a thickness of 5 nm.

The fifth film layer 6 has a thickness of 60 nm, and the sixth film layer 7 has a thickness of 10 nm.

The seventh film layer 8 has a thickness of 8 nm, and the eighth film layer 9 has a thickness of 10 nm.

The ninth film layer 10 has a thickness of 30 nm.

Example 4

a second film layer 3 on the surface of the first film layer 2, the second film layer 3 being a tin oxide film;

The thickness of the first film layer 2 was 27 nm, and the thickness of the second film layer 3 was 16 nm.

The thickness of the third film layer 4 is 5 nm, and the thickness of the fourth film layer 5 is 8 nm.

The fifth film layer 6 has a thickness of 57 nm, and the sixth film layer 7 has a thickness of 13 nm.

The seventh film layer 8 has a thickness of 6 nm, and the eighth film layer 9 has a thickness of 8 nm.

The ninth film layer 10 has a thickness of 26 nm.

Example 5

The products obtained in Examples 1-4 were tested and the results are shown in the following table:

实施例Example	11	22	33	44
遮阳系数SCShading coefficient SC	0.2600.260	0.2590.259	0.2580.258	0.2540.254
透光度Transmittance	7575	7373	7878	7272
E值E value	0.0380.038	0.0360.036	0.0320.032	0.0350.035
G值G value	0.410.41	0.450.45	0.400.40	0.480.48

Wherein, the E value refers to the emissivity. Emissivity refers to the ratio of far infrared rays passing through the glass to incident far infrared rays. The smaller the emissivity, the more heat is reflected back through the film layer, and the better the heat insulation effect. (E=0.0129R-6.7 ^-5 R ² )

The G value is the solar energy gain value (shading coefficient). It is used to measure the total amount of solar energy. In the southern region, the lower the G value, the better. The higher the G value in the northern region, the better.

The beneficial effects of the invention are:

(1) The double-silver low-emission coated glass of the present invention uses titanium nitride having a low diffusion coefficient as a protective base layer, and the film layer can be subjected to tempering heat treatment at a high temperature.

The above is a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. These improvements and retouchings are also considered. It is the scope of protection of the present invention.

Claims

A double silver low-emission coated glass comprising a glass substrate (1) and a coating layer covering the surface of the glass substrate (1), wherein the coating layer comprises:

a first film layer (2) on a surface of the glass substrate (1), the first film layer (2) being a titanium dioxide film;

a second film layer (3) on a surface of the first film layer (2), the second film layer (3) being a zinc aluminum alloy film or a tin oxide film;

a third film layer (4) located on a surface of the second film layer (3), the third film layer (4) being a silver film;

a fourth film layer (5) on the surface of the third film layer (4), the fourth film layer (5) being a nickel-chromium alloy film;

a fifth film layer (6) on the surface of the fourth film layer (5), the fifth film layer (6) being a titanium dioxide film;

a sixth film layer (7) located on a surface of the fifth film layer (6), the sixth film layer (7) being a zinc aluminum alloy film or a zinc oxide film;

a seventh film layer (8) located on a surface of the sixth film layer (7), wherein the seventh film layer (8) is a silver film;

An eighth film layer (9) on the surface of the seventh film layer (8), the eighth film layer (9) being a nickel-chromium alloy film;

A ninth film layer (10) is located on a surface of the eighth film layer (9), and the ninth film layer (10) is a titanium nitride layer.
The double silver low-emission coated glass according to claim 1, wherein the first film layer (2) has a thickness of 20-30 nm, and the second film layer (3) has a thickness of 10- 20nm.
The double silver low-emission coated glass according to claim 2, wherein the third film layer (4) has a thickness of 1-8 nm, and the fourth film layer (5) has a thickness of 5- 8nm.
The double silver low-emission coated glass according to claim 3, wherein the fifth film layer (6) has a thickness of 55-60 nm, and the sixth film layer (7) has a thickness of 10- 20nm.
The double silver low-emission coated glass according to claim 4, wherein the seventh film layer (8) has a thickness of 1-8 nm, and the eighth film layer (9) has a thickness of 5- 10nm.
A double silver low-emission coated glass according to claim 5, wherein the ninth film layer (10) has a thickness of 20-30 nm.
A method for preparing a double-silver low-emission coated glass, comprising the steps of:

Cleaning and drying the glass substrate to ensure that the surface of the glass substrate is clean;

Titanium dioxide, zinc-aluminum alloy film or zinc oxide, nickel-chromium alloy, titanium nitride, silver are respectively sintered on the target position of the vacuum sputtering chamber of the glass coating machine, and used;

The glass substrate is placed under vacuum, dehumidified and degassed, and the moisture and gas deposited on the surface of the glass are lowered to obtain a dehumidifying and degassing glass;

The dehumidified and degassed glass is sent into the vacuum magnetron sputtering chamber of the glass coating machine, and the first film layer, the second film layer and the third film layer are sequentially plated on the surface of the dehumidifying and degassing glass from bottom to top. And a fourth film layer, a fifth film layer, a sixth film layer, a seventh film layer, an eighth film layer, and a ninth film layer.