Low-E hollow glass and preparation method thereof

Abstract

The invention discloses Low-E hollow glass which comprises two glass substrates and a hollow layer located between the two glass substrates, and the surface of at least one glass substrate is plated with a Low-E film; according to the Low-E hollow glass and the preparation method thereof, a magnetron sputtering method is adopted for film coating, a film layer is high in quality, good in uniformity, good in optical performance and stability and excellent in heat insulation performance, energy consumption of a building can be effectively reduced, the purposes of energy conservation and environmental protection are achieved, selection of the glass substrate is diversified, and the low-E hollow glass is suitable for large-scale popularization and application. Different use requirements can be met, the preparation method is simple and easy to operate, and large-scale production can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of glass manufacturing, and in particular to a Low-E insulating glass and a preparation method thereof. Background Art

[0002] As people's requirements for energy conservation and environmental protection continue to increase, Low-E insulating glass has been widely used in the construction field due to its excellent thermal insulation and heat preservation performance. Traditional Low-E insulating glass still has some shortcomings in performance and preparation process, such as the thermal insulation effect needs to be further improved, the preparation process is complicated, and the cost is high. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention proposes a new type of Low-E insulating glass and a preparation method thereof, aiming to improve the film quality and uniformity, as well as optimize the optical performance and stability through innovative structural design and preparation process.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A Low-E insulating glass comprises two glass substrates and a hollow layer between the two glass substrates, wherein a surface of at least one of the glass substrates is coated with a Low-E film;

[0006] The hollow layer is filled with an inert gas, such as argon, krypton, etc., to improve the heat insulation performance of the glass;

[0007] The glass substrate can be ordinary flat glass, tempered glass or laminated glass, etc., which can be selected according to different usage requirements.

[0008] The present invention also provides a method for preparing the above-mentioned Low-E insulating glass, comprising the following steps:

[0009] S1, coating step: Use magnetron sputtering to coat the Low-E film on the surface of the glass substrate. Select suitable target materials, such as silver, tin oxide, etc., and obtain a Low-E film with good optical properties and thermal insulation properties by controlling sputtering power, gas pressure, temperature and other parameters. The coated glass substrate is cleaned and dried;

[0010] S2. Glass cutting and edge grinding: Cut the coated glass substrate and another uncoated glass substrate according to the required size, and grind the edges to make them smooth to avoid scratches and other problems during subsequent processing and use;

[0011] S3. Assemble hollow glass: Place two glass substrates in parallel and fix them with spacers around to form a hollow layer. The spacers can be made of aluminum alloy, stainless steel and other materials, which have good sealing and supporting effects. Apply sealant on both sides of the spacers to ensure the sealing of the hollow layer;

[0012] S4. Filling with inert gas: Inert gas, such as argon, krypton, etc., is filled into the hollow layer through the inflation holes reserved on the spacer strips. After the inflation is completed, the inflation holes are sealed with sealant.

[0013] S5. Inspection and packaging: Conduct quality inspection on the prepared Low-E insulating glass, including appearance inspection, dimension measurement, thermal insulation performance test, etc. After passing the inspection, it will be packaged for transportation and installation.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The Low-E insulating glass of the present invention is coated by magnetron sputtering, and the film layer has high quality, good uniformity, good optical performance and stability.

[0016] 2. The Low-E insulating glass of the present invention has excellent heat insulation performance, can effectively reduce the energy consumption of buildings, and achieve the purpose of energy saving and environmental protection.

[0017] 3. The hollow layer of the Low-E insulating glass of the present invention is filled with inert gas, which further improves the heat insulation performance and sound insulation effect of the glass.

[0018] 4. The glass substrate of the present invention has a variety of choices to meet different usage requirements, and the preparation method is simple and easy to operate, and can achieve large-scale production. DETAILED DESCRIPTION

[0019] The Low-E insulating glass and the preparation method thereof of the present invention are described in detail below in conjunction with specific embodiments.

[0020] Embodiment 1:

[0021] 1. Ordinary flat glass is selected as the glass substrate, and a Low-E film is coated on the surface of one of the glass substrates by magnetron sputtering. The target materials are silver and tin oxide, the sputtering power is 100W, the gas pressure is 0.5Pa, and the temperature is 200℃. The coated glass substrate is cleaned and dried.

[0022] 2. Cut the coated glass substrate and another uncoated ordinary flat glass into required sizes and grind the edges.

[0023] 3. Use aluminum alloy spacers to place two glass substrates in parallel and fix them with spacers around to form a hollow layer. Apply sealant on both sides of the spacers.

[0024] 4. Fill the hollow layer with argon through the reserved inflation holes on the spacer strips. After inflation, seal the inflation holes with sealant.

[0025] 5. Carry out quality inspection on the prepared Low-E insulating glass, including appearance inspection, size measurement, thermal insulation performance test, etc. After passing the inspection, it will be packaged.

[0026] Embodiment 2:

[0027] 1. Choose tempered glass as the glass substrate, and use magnetron sputtering to coat the Low-E film on the surface of one of the glass substrates. Silver and tin oxide are used as the target materials, the sputtering power is 150W, the air pressure is 0.8Pa, and the temperature is 250℃. The coated glass substrate is cleaned and dried.

[0028] 2. Cut the coated tempered glass substrate and another uncoated tempered glass substrate into required sizes and grind the edges.

[0029] 3. Use stainless steel spacers to place the two glass substrates in parallel and fix them with spacers around to form a hollow layer. Apply sealant on both sides of the spacers.

[0030] 4. Fill the hollow layer with krypton gas through the reserved inflation holes on the spacer strips. After inflation, seal the inflation holes with sealant.

[0031] 5. Carry out quality inspection on the prepared Low-E insulating glass, including appearance inspection, size measurement, thermal insulation performance test, etc. After passing the inspection, it will be packaged.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A Low-E insulating glass, characterized in that: The invention comprises two glass substrates and a hollow layer between the two glass substrates, wherein a surface of at least one of the glass substrates is coated with a Low-E film; The hollow layer is filled with an inert gas, such as argon or krypton; The glass substrate can be ordinary flat glass, tempered glass or laminated glass.

2. The method for preparing Low-E insulating glass according to claim 1, characterized in that: The following steps are involved: S1, coating step: Use magnetron sputtering to coat the Low-E film on the surface of the glass substrate. Select a suitable target material, such as silver, tin oxide, etc., and control the sputtering power, gas pressure, temperature and other parameters to obtain a Low-E film with good optical properties and thermal insulation properties. The coated glass substrate is cleaned and dried; S2, glass cutting and edge grinding: according to the required size, the coated glass substrate and another uncoated glass substrate are cut, and the edges are ground to make them smooth; S3. Assemble hollow glass: Place two glass substrates in parallel and fix them with spacers around to form a hollow layer. The spacers can be made of aluminum alloy, stainless steel and other materials. Apply sealant on both sides of the spacers. S4. Filling with inert gas: fill the hollow layer with inert gas, such as argon or krypton, through the reserved inflation holes on the spacer strips. After inflation, seal the inflation holes with sealant. S5. Inspection and packaging: The prepared Low-E insulating glass is subjected to quality inspection, including appearance inspection, dimension measurement, and thermal insulation performance test. After passing the inspection, it is packaged.