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Anodic bonding method and anodic bonding device for vacuum glass sealing

A vacuum glass, anodic bonding technology, applied in glass forming, glass remolding, glass manufacturing equipment and other directions, can solve the problems of material physical properties mismatch, complex process, harsh welding conditions, etc., to achieve thermal expansion coefficient matching , the preparation process is simple, the effect of high sealing strength

Active Publication Date: 2018-07-27
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional welding methods generally have the characteristics of high welding temperature, complicated process, and harsh welding conditions.
Especially high welding temperature is likely to cause many problems, especially more sensitive to the mismatch of physical properties of materials, or may cause workpiece deformation or even some properties of materials to change or lose

Method used

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  • Anodic bonding method and anodic bonding device for vacuum glass sealing
  • Anodic bonding method and anodic bonding device for vacuum glass sealing
  • Anodic bonding method and anodic bonding device for vacuum glass sealing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] An anodic bonding method for vacuum glass sealing, which completes the vacuuming and sealing of vacuum glass at one time in the anodic bonding device for vacuum glass sealing; the specific steps are:

[0037] 1) Prepare an anodic bonding device for vacuum glass sealing;

[0038] 2) Preparation of low melting point glass powder

[0039] Weigh the basic glass raw material according to mole percentage: TeO 2 15%, ZnO 30%, B 2 o 3 40%, Na 2 O is 15%, and the weighed raw materials are fully mixed to make a mixture. The obtained glass batches were heated up to 900°C at a rate of 3°C / min, and then held for 70 minutes; then poured into a graphite mold for molding, and annealed at 350°C for 1 hour, the prepared glass blocks were broken, ground for 2 hours, and then passed 500 mesh sieve to obtain low melting point glass powder.

[0040]

[0041]

[0042] 3) Preparation of low melting point glass paste:

[0043] Be 94:6 by the mass ratio of terpineol and ethyl cellul...

Embodiment 2

[0048] An anodic bonding method for vacuum glass sealing, which completes the vacuuming and sealing of vacuum glass at one time in the anodic bonding device for vacuum glass sealing; the specific steps are:

[0049] 1) Prepare an anodic bonding device for vacuum glass sealing;

[0050] 2) Preparation of low melting point glass powder

[0051] Weigh the basic glass raw material according to mole percentage: TeO 2 15%, ZnO 40%, B 2 o 3 30%, Li 2 O is 15%, and the weighed raw materials are fully mixed to make a mixture. The obtained glass batches were heated up to 1000°C at a rate of 5°C / min, and then held for 40 minutes; then poured into a graphite mold for molding, and annealed at 350°C for 1 hour, the prepared glass blocks were broken, ground for 2 hours, and then passed 500 mesh sieve to obtain low melting point glass powder.

[0052]

[0053] 3) Preparation of low melting point glass paste:

[0054] Be 96:4 by the mass ratio of terpineol and ethyl cellulose, mix (s...

Embodiment 3

[0059] An anodic bonding method for vacuum glass sealing, which completes the vacuuming and sealing of vacuum glass at one time in the anodic bonding device for vacuum glass sealing; the specific steps are:

[0060] 1) Prepare an anodic bonding device for vacuum glass sealing;

[0061] 2) Preparation of low melting point glass powder

[0062] Weigh the basic glass raw material according to mole percentage: TeO 2 75%, ZnO 20%, Na 2 O is 5%, and the weighed raw materials are fully mixed to make a mixture. The obtained glass batches were heated to 870°C at a rate of 5°C / min, and then kept for 50 minutes; then poured into water and quenched into glass pieces, and the prepared glass pieces were further broken, ground for 3 hours, and passed through a 500-mesh sieve. Obtain low melting point glass powder.

[0063]

[0064] 3) Preparation of low melting point glass paste:

[0065] Be 98:2 by the mass ratio of terpineol and ethyl cellulose, mix (stir) terpineol and ethyl cellu...

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Abstract

The invention discloses an anodic bonding method and an anodic bonding device for vacuum glass sealing. The anodic bonding method includes selecting appropriate glass powder with a low melting point and manufacturing sealing materials; coating edge sealing layers and intermediate support dot matrixes on glass substrates at one step; laminating each glass substrate with another blank glass substrate, placing the glass substrates and the blank glass substrates in the anodic bonding device, vacuumizing the anodic bonding device until the pressure of the anodic bonding device reach 5.0*10<-2>-1.0*10<-4> Pa and carrying out effective anodic bonding in states of bonding temperatures of 300-500 DEG C and bonding voltages of 400-800 V. The anodic bonding method and the anodic bonding device have the advantages that vacuum glass can be vacuumized and sealed in the anodic bonding device at the low bonding temperatures at one step, and accordingly vacuum glass with excellent performance can be prepared by the aid of the anodic bonding method and the anodic bonding device; glass composition with the low melting point is free of lead, is green and environmentally friendly and is matched with thermal expansion coefficients of the glass substrates; preparation processes are simple and are low in cost and high in efficiency, the anodic bonding method and the anodic bonding device are suitablefor industrial production and high in efficiency, and energy can be saved; the vacuum glass is high in sealing strength, good in stability and long in service life as compared with the traditional vacuum glass sealing methods.

Description

technical field [0001] The invention belongs to the field of vacuum glass manufacturing and the technical field of micro-electromechanical systems, and in particular relates to an anodic bonding method and device for vacuum glass sealing. Background technique [0002] With the increasingly serious global energy and environmental problems, low-carbon, environmentally friendly, green and energy-saving building materials have gradually become the choice of countries all over the world, and they are also an inevitable requirement for my country to implement sustainable development. Vacuum glass is a green building material with excellent thermal insulation properties. Its excellent thermal insulation and sound insulation properties determine that it has a broad market prospect in the field of energy conservation and environmental protection. It can be widely used in building doors, windows, curtain walls, refrigeration Freezers, photovoltaic solar power generation, vehicles and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B23/24C03C12/00
CPCC03B23/245C03C12/00
Inventor 李宏陈鹏熊德华
Owner WUHAN UNIV OF TECH
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