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Vacuum glass with two or a plurality of paths of sealing and a preparing method thereof

A vacuum glass and glass technology, applied in glass manufacturing equipment, glass production, glass molding, etc., can solve the problems of broken supports and glass, difficulty in maintaining vacuum degree, and low production capacity

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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  • Vacuum glass with two or a plurality of paths of sealing and a preparing method thereof
  • Vacuum glass with two or a plurality of paths of sealing and a preparing method thereof
  • Vacuum glass with two or a plurality of paths of sealing and a preparing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0098] Example 1: see figure 1 , a convex vacuum glass with two seals. The vacuum glass is composed of an upper convex glass 1 and a lower convex glass 2. The periphery of the two glasses is welded together by the first sealing 3 low-temperature glass solder and the second sealing 4 metal solder. , with a vacuum layer in the middle. The production method is as follows: firstly cut two pieces of flat glass of the required size according to the shape and size of the vacuum glass to be produced, and perform edge grinding, chamfering, cleaning and drying; secondly, apply silver paste on the welding surface of the metal solder, Then put the two pieces of glass into the mold, put them in the hot bending furnace, heat up to the softening temperature of the glass at 550-750°C, rely on the gravity of the glass itself to make the glass downward to form a convex surface, and the coated silver paste is also sintered on the glass , and lowered to room temperature with the furnace; again, ...

Embodiment 2

[0100] Example 2: see figure 2 , a flat vacuum glass with two seals, the two glasses are tempered glass, one of which is low-emissivity glass; the vacuum glass is composed of upper glass 1 and lower glass 2, and the periphery of the two glasses is sealed by the first 3 polyamide The imide adhesive and the second seal 4 metal solder are welded together with a vacuum layer in between. The production method is as follows: first, cut two pieces of flat glass of the required size according to the shape and size of the vacuum glass to be produced, and perform edge grinding, chamfering, cleaning and drying; secondly, use tempered glass ink and dots on the upper glass 1 The glue machine prepares the support 8, coats the silver paste on the welding surface of the metal solder of the two glasses, and then sends the two glasses into the tempering furnace for tempering treatment, the prepared support 8 and the coated silver paste It is also sintered on the glass; the sintered support 8 ...

Embodiment 3

[0102] Embodiment 3: see image 3 , a three-way sealed planar vacuum glass, two pieces of glass are tempered glass, one of which is still low-emissivity glass, and its production method is as follows: First, cut a piece of flat glass and a piece of required size according to the shape and size of the vacuum glass to be produced. Low-emissivity glass, and carry out edging, chamfering, cleaning, and drying; secondly, on the two pieces of glass, use tempered glass ink and a glue dispenser to prepare the support 8 respectively, and the support 8 is a long strip. After the two pieces of glass are combined The upper and lower supports are intersected together, and then the two pieces of glass are respectively sent into the tempering furnace for tempering treatment, and the prepared support 8 is also sintered on the glass; the sintered support 8 is mechanically ground again to make the top of it on the In one plane, round the top edge after grinding to further eliminate the influence...

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Abstract

Vacuum glass with two or a plurality of paths of sealing is provided. The vacuum glass comprises upper glass and lower glass. The periphery of the upper glass and the periphery of the lower glass are sealed through 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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Patent Type & Authority Applications(China)
IPC IPC(8): C03B23/24C03C27/08C03C27/10
CPCY02P40/57
Inventor 戴长虹
Owner 戴长虹
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