Preparation method of vacuum glass

Abstract

A method for preparing vacuum glass comprises the following steps: (1) heating glass, adhesive applying and curing: applying sealing glass powder with low melting point on four edges of a glass sheet to form a glass sheet with adhesive, and providing fulcrums at the four edges of the glass sheet with adhesive; (2) arranging the glass: laminating a glass sheet with no adhesive or with a small amount of adhesive or glazed on the glass sheet with adhesive after being processed in step (1) to form a glass set, respectively arranging at least one glass set above and below at least one high temperature heating plate, and placing the arranged glass sets and the high temperature heating plate in a preheating box; (3) heating the glass in a kiln: placing the preheating box in a vacuum kiln, rapidly vacuumizing to obtain a pressure of 10-1 to 10-3 pa, powering on the high temperature heating plate for heating, and pressurizing and laminating the glass sheets during the heating process; and (4) taking out the vacuum glass. The method reduces the preparation time, lowers the power consumption and improves the sealing property. The vacuum glass manufactured by using the method has uniform bearing capacity.

Description

technical field [0001] The invention relates to the field of vacuum glass, in particular to a preparation method of vacuum glass. Background technique [0002] The vacuum layer of the vacuum glass can effectively block the heat conduction between indoor and outdoor, significantly reduce the emission of indoor air-conditioning computer pollutants and greenhouse gases, has good heat insulation performance, and can reduce the transmission of noise. Performance applications are very extensive. [0003] The application number is 2013106090473, and the publication date is March 19, 2014. The invention patent application titled vacuum glass preparation process discloses a preparation method of vacuum glass. Lead-free glass powder is placed and dispersed on the glass surface to form The fulcrum with the designed height and area is sent into the tempering furnace to be tempered to prepare tempered glass. Place the flat glass with the exhaust hole on the side of the tempered glass wi...

AI Technical Summary

Problems solved by technology

There are two defects in the vacuum glass prepared by this method: one is that the preparation time is relatively long, and it generally takes eight hours to obtain the vacuum glass. For example, the setting of the fulcrum, the height, area, and diameter of the pointing point all need to be strictly controlled, which is time-consuming and laborious; Second, there are air holes on the surface of the vacuum glass, and the pressure bearing capacity of the vacuum glass surface is different, and it is not beautiful at the same time.

[0004] The application number is 2012103740367, the publication date is March 6, 2013, and the title is an invention patent application for vacuum glass and its preparation method. The disclosed vacuum glass preparation method is to heat and vacuumize while heating in a vacuum furnace. The method produces vacuum glass, and the low-melting-point sealing glass powder is easy to foam and carbonize under high temperature and high negative pressure. The detachment treatment of the powder will form carbonized black lines, which will affect the gelation of the low melting point sealing glass powder and the sealing performance of the vacuum glass

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