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Vacuum glass sealing process

A vacuum glass and process technology, applied in the field of vacuum glass sealing technology, can solve the problems of solder peeling and peeling, increase energy consumption, poor solder strength, etc., achieve high air tightness edge sealing, strong shear resistance, and service life. long effect

Pending Publication Date: 2022-05-06
刘浩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current vacuum glass needs to have an air hole for vacuuming on the glass. The existence of the air hole will destroy the overall strength of the glass, and it is easy to damage the vacuum glass at the position of the air hole or lose the negative pressure between the glasses, and This kind of production method that requires vacuuming through the air hole can only be used for single-chip production, and the production efficiency is low.
[0004] The existing vacuum glass edge-sealing materials and edge-sealing methods without air holes generally have low bonding performance with glass, or the strength of the solder itself is poor, and some or all of the solder may be peeled off from the glass, resulting in possible cracks in the sealing structure in later applications. Air leakage and other phenomena will destroy the vacuum state of the vacuum glass; or the existing vacuum glass edge sealing material needs to be sealed at a high temperature above 350°C. This temperature range will cause the glass to fade and temper, which will greatly affect the overall strength of the vacuum glass. and service life, and will also increase energy consumption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A vacuum glass sealing process, comprising the following steps:

[0048] (1) Cleaning: two pieces of toughened flat glass of the same size are washed with water as the substrate;

[0049] (2) Etching: After cleaning, the substrate is etched and roughened on its surrounding edges, with a treatment width of 5 mm; specifically, 40% hydrofluoric acid is used to etch for 5 minutes, and the etched area is the sealing area;

[0050] (3) Optical-grade cleaning: the etched substrate is ultrasonically cleaned for 40 minutes with a water-based optical glass cleaner to remove oil stains and glass debris;

[0051] (4) First-level coating: The cleaned substrate is vacuum-evaporated in its sealing area, and a 50nm silicon dioxide film is coated on the surface of the sealing area as a transition film, and then a first-level coating is applied on the transition film. The coating material of the coating is nickel-chromium alloy. The mass composition of nickel-chromium alloy is: 80% nick...

Embodiment 2

[0068] A vacuum glass sealing process. On the basis of Example 1, the cleaned substrate in step 4) is directly coated with a vacuum evaporation first-level coating in its sealing area, and does not use a silicon dioxide transition film. Other conditions and implementation Example 1 is the same.

[0069] Adopt the detection method identical with embodiment 1, record its U value (heat transfer coefficient) be 0.68 W / (m 2 K); weighted sound insulation R W (C; Ctr) =36(-1;-2) dB, R W =36, C / dB=-1, Ctr / dB=-2.

Embodiment 3

[0071] A vacuum glass sealing process, on the basis of embodiment 1, step 4) the coating material of the primary coating is set as iron-nickel-chromium alloy, and the mass composition of nickel-chromium alloy is: iron 22%, nickel 50%, chromium 28 %, the expansion coefficient is 150~160×10 -7 m / °C;, other conditions are the same as in Example 1.

[0072] Adopt the detection method identical with embodiment 1, record its U value (heat transfer coefficient) be 0.58 W / (m 2 K); weighted sound insulation R W (C; Ctr) =38(-1;-2) dB, R W =38, C / dB=-1, Ctr / dB=-2.

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Abstract

The invention discloses a vacuum glass sealing process, and belongs to the technical field of vacuum glass manufacturing methods. Existing vacuum glass edge sealing materials without air exhaust holes and edge sealing methods are generally low in bonding performance with glass, or welding flux is poor in strength, and part or all of the welding flux possibly falls off and is stripped from the glass, so that the phenomena of air leakage and the like possibly occur in a sealing structure part in later application, the vacuum state of the vacuum glass is damaged, and the service life of the vacuum glass is prolonged. According to the method, the nickel-chromium alloy, the iron-nickel-chromium alloy and the nickel-chromium-cobalt alloy are matched with the oxygen-free copper, and the sealing area is etched, so that the sealing strength and the air tightness of the vacuum glass can be effectively improved, the service life of the vacuum glass can be effectively prolonged, the sealing performance can be further improved by adding the transition film made of silicon dioxide or polyimide, and the sealing structure is higher in tension resistance and shear resistance and better in sealing effect. And a lower sealing temperature can be adapted.

Description

technical field [0001] A vacuum glass sealing process belongs to the technical field of vacuum glass manufacturing methods. Background technique [0002] At present, vacuum glass is a new type of glass deep-processing product, which is developed based on the principle of vacuum flask. The structure of vacuum glass is similar to insulating glass, the difference is that the gas in the cavity of vacuum glass is very thin, almost close to vacuum. The existing vacuum glass is usually sealed around two pieces of flat glass, the gap is evacuated and the air hole is sealed. The gap between the two pieces of glass is about 0.3mm, and at least one of the two pieces of vacuum glass is generally low. Radiation glass, which minimizes the heat loss through conduction, convection and radiation of vacuum glass, and its working principle is the same as that of glass thermos. Vacuum glass is the fruit of the collaboration of glass technology and material science, vacuum technology, physical...

Claims

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Application Information

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IPC IPC(8): C03C27/08C03C17/40C03C15/00
CPCC03C27/08C03C17/36C03C17/40C03C15/00
Inventor 刘浩
Owner 刘浩
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