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Vacuum glass with support and sealing material completed at one time and preparation method thereof

A vacuum glass and support technology, applied in the field of vacuum glass and its preparation, can solve the problems of restricting the industrial production efficiency of vacuum glass, reducing the heat insulation performance of vacuum glass, affecting the quality of vacuum glass, etc., and achieving flexible and adjustable expansion rate and saving Process and time, good sound insulation effect

Pending Publication Date: 2020-04-10
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method makes it difficult to effectively fix the supports arranged first, and the process efficiency is poor and the yield rate is low, which greatly restricts the industrial production efficiency of vacuum glass
In addition, the metal support commonly used in the prior art becomes a thermal bridge between two pieces of glass, which significantly reduces the heat insulation performance of the vacuum glass; when heated, the metal support and the glass contact part will also generate local stress , which seriously affects the quality of vacuum glass

Method used

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  • Vacuum glass with support and sealing material completed at one time and preparation method thereof
  • Vacuum glass with support and sealing material completed at one time and preparation method thereof
  • Vacuum glass with support and sealing material completed at one time and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Wash the ordinary float glass with water and dry it fully for later use. Using low-temperature glass frit (refer to the above description for composition) as raw material, the support and edge banding material are simultaneously produced on the surface of one piece of glass by printing or printing. The shape of the support is cylindrical, the nominal diameter is 0.3mm, the height is 0.25 or 0.20mm, the distance between two adjacent supports is 10-20mm, and the width of the edge banding is 5-10mm. After the fabric is finished, transfer the glass to an oven to dry at 110°C for 1 hour, and place another piece of glass preheated to the same temperature on the glass surface behind the fabric to complete the assembly.

[0026] Transfer the assembled two pieces of glass to a vacuum furnace and evacuate to 10 -2 Pa and preheat to 110°C, continue to heat up to 410°C±10°C and vacuum to 10 -4 Pa, maintained under this condition for 0.5h. After the support and edge banding mater...

Embodiment 2

[0028]This embodiment is basically the same as Embodiment 1, except that the vacuum heating furnace is heated to 410°C ± 10°C and vacuumed to 10°C. -4 Pa, maintained under this condition for 1h. The shear strength of the packaging glass was measured to be 0.51 MPa by experiment.

Embodiment 3

[0030] This example is basically the same as Example 1, except that the raw material used to make the support and edge banding material is a mixture of low-temperature glass powder and the aforementioned low-expansion glass-ceramic powder, and the mixing mass ratio of the two is 100:3 ; The temperature of the vacuum heating furnace is 420°C±10°C, and the vacuum and holding time are maintained for 1h. The shear strength of the packaging glass was measured to be 0.87MPa by experiment.

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Abstract

The intention discloses vacuum glass with a support and a sealing material completed at one time and a preparation method of the vacuum glass. According to the method, low-temperature glass powder andlow-expansion microcrystalline glass powder serve as raw materials, a support array and a sealing material are prepared on the surface of clean glass at the same time in a 3D printing or silk-screenprinting or spraying mode, and the glass is dried and covered with another piece of glass to complete assembly. And finally the glass is transferred into a vacuum heating furnace for heat treatment toobtain the flat plate or cambered surface vacuum glass. According to the method, the support array and the sealing material are simultaneously arranged on the surface of the glass and are simultaneously formed at one time in a vacuum high-temperature environment, so that the stress and the heat conductivity coefficient of the contact part of the support array and the glass are greatly reduced, and the method has the advantages of simple process, high efficiency, good product quality and the like.

Description

technical field [0001] The invention relates to the technical field of inorganic non-metallic materials, in particular to a vacuum glass in which a support and a sealing material are completed at one time and a preparation method thereof. Background technique [0002] Vacuum glass is usually composed of two pieces of glass, with a gap of (0.1-0.5) mm between the two pieces of glass, and the edge of the glass is sealed with low-melting point glass or metal sealing material, so that the two pieces A vacuum is formed between the glasses (atmospheric pressure lower than 0.1Pa). Vacuum glass is a kind of energy-saving glass. Its energy-saving principle is the common principle of glass thermos. It uses vacuum to isolate the air convection heat transfer between two pieces of glass to achieve the purpose of energy saving. [0003] As early as 1913, the German physicist Zoller had already proposed the concept of vacuum glass, and in 1924 issued the world's first flat vacuum glass pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C27/10C03C12/00C03C10/12
CPCC03C10/0027C03C12/00C03C27/10
Inventor 赵青南
Owner WUHAN UNIV OF TECH