Adhesive sealed vacuum glass and preparation method thereof

Abstract

The invention relates to an adhesive sealed vacuum glass, which comprises an upper glass and a lower glass, wherein the peripheries of the upper glass and the lower glass are sealed and connected through an adhesive, the adhesive has two parts, a metal or glass welding material is arranged between the two adhesive parts, a closed vacuum layer is formed between the upper glass and the lower glass, the upper glass and the lower glass are convex glasses or flat glasses, and the convex surface of the convex glass is toward the outer side. According to the present invention, the vacuum glass production method is simple, the prepared vacuum glass and the prepared tempered vacuum glass can overcome the defects in the prior art, the tightness and the service life of the vacuum glass can be effectively ensured, and mechanization, automation 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...

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 are greatly restricted.

The one-step production process of direct edge sealing in a vacuum furnace is the main means of low-cost and mass production of vacuum glass. The current technology is to use glass solder or metal edge sealing; the existing problem is: when using glass solder edge sealing, 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 affecting Adhesive strength and air tightness, it is difficult to produce long-life, high-quality vacuum glass; when using metal edge sealing, because the molten metal will volatilize under vacuum, the volatilized metal gas molecules will be deposited on the glass surface, Or react with the residual air in the vacuum to form a compound and then deposit it on the glass surface, similar to vacuum coating, which not only affects the appearance of vacuum glass, but also affects the light transmittance of vacuum glass, so satisfactory vacuum glass cannot be obtained, so although Metal can reduce the sealing temperature so that tempered vacuum glass can be produced, flexible edge sealing can effectively reduce stress and reduce damage rate, lead-free sealing can eliminate heavy metal pollution, etc., but so far no vacuum glass with metal edge sealing has been seen; Adhesive edge-sealed vacuum glass is considered as pseudo-vacuum glass because it has not undergone a high-temperature exhaust process and the airtightness of the organic adhesive is poor, making it difficult to maintain the vacuum degree.

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

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