Negative pressure hollow glass and preparation method thereof

Abstract

The invention discloses a piece of negative pressure hollow glass which comprises a piece of upper glass, a piece of lower glass and a frame, wherein the peripheries of the upper glass and the lower glass are sealed and connected together through the frame and an ultraviolet curing adhesive inside a vacuum side sealing furnace; a sealed negative pressure hollow layer is formed between the upper glass and the lower glass. The preparation method of the negative pressure hollow glass is simple in process, the prepared negative pressure hollow glass and reinforced negative pressure hollow glass can overcome the defects of conventional hollow glass and negative pressure glass, the air-tightness and the service life of the negative pressure hollow glass can be effectively ensured, and mechanical, automatic 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 negative pressure insulating glass and a manufacturing method thereof. Background technique [0002] Most of the existing insulating glass is a glass product in which two or more pieces of glass are separated by a spacer frame with a desiccant and sealed with an organic sealant around the periphery. The air in the air layer of the insulating glass is sealed between two pieces of glass. Due to the change of the external temperature, the pressure of the air layer will change. When the external temperature is high, the air pressure in the air layer of the insulating glass is greater than the external atmospheric pressure, and the glass is convex. When the external temperature is low, the air pressure in the air layer of the insulating glass is lower than the external atmospheric pressure, and the glass is concave, resulting in the so-called "breathing" phenomenon. Be...

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Problems solved by technology

The air in the air layer of the insulating glass is sealed between two pieces of glass. Due to the change of the external temperature, the pressure of the air layer will change. When the external temperature is high, the air pressure in the air layer of the insulating glass is greater than the external atmospheric pressure, and the glass is convex. When the external temperature is low, the air pressure in the air layer of the insulating glass is lower than the external atmospheric pressure, and the glass is concave, resulting in the so-called "breathing" phenomenon. Because the organic sealant used is repeatedly subjected to the action of tensile stress, fatigue damage occurs, making it with the glass. The bonding strength and airtightness between them are easily damaged, resulting in frequent failure of the insulating glass, which seriously affects the service life of the insulating glass

[0003] Patents CN200810057483.3, CN200810058770.6 and CN200910157245.4 all disclose a kind of negative pressure insulating glass. By opening an air suction port on a piece of glass of the insulating glass, the air in the air layer of the insulating glass is extracted by the air suction port to form a Negative pressure; its disadvantage is that each piece of insulating glass needs to be equipped with an air suction port, the structure of the air extraction valve is complicated, and each piece of insulating glass needs to be independently pumped, and the production efficiency is low. Due to the complex production process, high production cost, Low production capacity, so it is not conducive to popularization and application

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