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Groove sealed vacuum glass and preparing method thereof

A vacuum glass and glass technology, applied in glass manufacturing equipment, glass production, glass molding, etc., can solve problems such as changes in the properties of glass solder, affecting bonding strength and air tightness, supports and glass breakage

Inactive Publication Date: 2016-06-08
戴长虹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The two-step process is a relatively mature technology. The existing commercially available vacuum glass is produced by the two-step process, that is, the production process of sealing the edge with low-temperature glass solder, then evacuating through the suction port, and finally sealing the suction port; but Due to the complex structure of the produced vacuum glass, cumbersome process, high cost, low production capacity, and the inability to produce fully tempered vacuum glass, the production and application of vacuum glass have been greatly restricted; Without the high-temperature exhaust process, the airtightness of the organic adhesive is poor, making it difficult to maintain the vacuum, so it is identified as a pseudo-vacuum glass
The one-step production process of directly sealing the edge in the vacuum furnace is the main means of low-cost and mass-produced vacuum glass. The current technology is to use glass solder or metal solder to seal the edge; the existing problem is: when using glass solder to seal the edge , due to the high welding temperature, it is not easy to produce fully tempered vacuum glass. The bigger problem is that the glass solder is prone to outgassing when it is melted in a vacuum, which not only causes many bubbles in the glass solder itself, but also changes the properties of the glass solder, thus It affects the bonding strength and air tightness, and it is difficult to produce long-life, high-quality vacuum glass; when using metal solder for edge sealing, because the molten metal solder will volatilize under vacuum, the volatilized metal gas molecules will be deposited on the glass On the surface, or react with the residual air in the vacuum to form compounds and then deposit on the glass surface, similar to vacuum coating, not only affects the appearance of the vacuum glass, but also affects the light transmission of the vacuum glass, so it is impossible to obtain a satisfactory vacuum glass Therefore, although metal solder can reduce the sealing temperature and thus can produce tempered vacuum glass, flexible edge sealing can effectively reduce stress and reduce damage rate, lead-free sealing can eliminate heavy metal pollution, etc., but so far there is no vacuum glass with metal edge sealing
In summary, the three materials of glass solder, metal solder and organic adhesive cannot be directly applied to seal vacuum glass under vacuum.
In addition, in order to reduce the heat transfer and sound transmission of the support and the impact on visibility, the smaller the size of the support, the better. The smaller the size of the support, the greater the pressure on the support and the glass in contact. , the more likely the support and the glass are broken, the worse the impact resistance of the vacuum glass

Method used

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  • Groove sealed vacuum glass and preparing method thereof
  • Groove sealed vacuum glass and preparing method thereof
  • Groove sealed vacuum glass and preparing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0063] Embodiment 1: see figure 1, a planar vacuum glass with an edge-sealing groove and three seals, two pieces of glass are tempered glass, one of which is low-emissivity glass, the production method is as follows: firstly cut the required vacuum glass according to the shape and size A piece of flat glass and a piece of low-emissivity glass, and set up an edge sealing groove 7 on one of the glasses, and then perform edge grinding, chamfering, cleaning, and drying; secondly, send the two pieces of glass into a tempering furnace for Toughening treatment, then prepare support 6 with polyimide adhesive and glue applicator respectively on two pieces of glass, support 6 is line shape, after two pieces of glass are combined, upper and lower support 6 intersects together; Or use a coating machine to evenly coat two low-temperature glass solders and one magnesium alloy powder on the periphery of two pieces of glass. The magnesium alloy powder is located between the two glass solders ...

Embodiment 2

[0065] Example 2: see figure 2 , a flat vacuum glass with two edge-sealing grooves and two seals. The two pieces of glass are tempered glass, one of which is still low-emissivity glass. The production method is as follows: firstly, cut the required A piece of flat glass and a piece of low-emissivity glass of the same size, and set up a corresponding upper and lower edge sealing groove 7 on each of the two pieces of glass, and then perform edge grinding, chamfering, cleaning and drying; Glass ink and dispensing machine to prepare support 6, the support 6 is a long strip, after the two pieces of glass are combined, the upper and lower supports cross together, and then the two pieces of glass are respectively sent into the tempering furnace for tempering treatment, the prepared The support 6 is also sintered on the glass; the sintered support 6 is mechanically ground again so that its top is in a plane, and the top edge after grinding is rounded to further eliminate the influenc...

Embodiment 3

[0069] Embodiment 3: see image 3 , a planar vacuum glass with two edge-sealing grooves and three seals, two pieces of glass are tempered glass, one of which is low-emissivity glass, the production method is as follows: firstly cut the vacuum glass according to the shape and size of the vacuum glass to be produced A piece of flat glass and a piece of low-emissivity glass of the required size, and two edge sealing grooves 7 are set on the upper glass 1, and then edge grinding, chamfering, cleaning and drying are carried out; secondly, the two pieces of glass are sent to the tempering furnace respectively Perform tempering treatment; use polyimide adhesive and dispenser to prepare support 6 again, support 6 is cylindrical, and then evenly coat two layers of polyimide on the periphery of a piece of glass or two pieces of glass with a coating machine Adhesive and a magnesium alloy powder, the two polyimide adhesives correspond to the two edge grooves 7 respectively, the magnesium ...

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PUM

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Abstract

Groove sealed vacuum glass is provided and comprises upper glass and lower glass. The periphery of the upper glass and the periphery of the lower glass are sealed through an edge sealing groove and two or a plurality of paths of sealing materials. The sealing materials comprise glass solder, metal solder and an adhesive. A sealed vacuum layer is formed between the upper glass and the lower glass. The upper glass and the lower glass are convex glass or plain glass. The convex surface of the convex glass faces the outside. A preparing method of the vacuum glass is simple. The prepared vacuum glass and tempered vacuum glass can overcome disadvantages of the prior art. Air impermeability and service lifetime of the vacuum glass can be ensured effectively. Mechanized, automatic and large-scale production can be achieved.

Description

technical field [0001] The invention relates to the technical field of glass deep processing, in particular to a vacuum glass and a manufacturing method thereof. Background technique [0002] Existing vacuum glass is generally composed of two pieces of flat glass. The glass is sealed with low-temperature glass solder around the glass, and there is a tiny support in the middle. A thin vacuum layer with a thickness of 0.1-0.2mm is formed between the two pieces of glass by vacuuming. Since there is no heat transfer and sound transfer of gas, and the inner surface of the glass can have a transparent low-emissivity film, the vacuum glass has good heat insulation and sound insulation effects, and is one of the best performance energy-saving glasses; because the vacuum layer is very Thin, so it has advantages compared with other energy-saving glass in terms of weight and thickness. [0003] After decades of research and development, there are a variety of vacuum glass production...

Claims

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Application Information

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IPC IPC(8): C03B23/24C03C27/08C03C27/10
CPCY02P40/57
Inventor 戴长虹
Owner 戴长虹
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