The periphery is sealed, and a vacuum layer is formed between the glasses, and the vacuum degree of the vacuum layer is less than 10-2pa during the product life. The k value of vacuum glass is usually less than 1.0W/(m2? k).
Vacuum glass is two pieces of glass with a bracket between them. A piece of glass has a metal suction port, which is evacuated by a vacuum pumping device and sealed.
The two pieces of glass are separated by effective sealing materials and spacer materials, and a desiccant for absorbing moisture is installed between the two pieces of glass to ensure that the interior of the hollow glass is a dry air layer for a long time without moisture and dust; At the same time, insulating glass is easy to produce in large quantities, so insulating glass is widely recommended in new buildings.
Extended data:
The insulating glass desiccant is mainly suitable for absorbing moisture and gas in the interlayer gas of insulating glass, avoiding glass fogging, keeping the insulating glass clean and transparent even at a very low temperature, improving the heat insulation and sound insulation performance of insulating glass, and fully prolonging the service life of insulating glass.
The thermal conductivity of glass is 27 times that of air. As long as the insulating glass is sealed, the insulating effect of insulating glass is the best.
There is a certain space between the glasses of insulating glass. The frame is filled with desiccant to ensure that the air between the glass plates is dry. The distance between two layers of insulating glass is generally 8 mm.
High performance insulating glass is different from ordinary insulating glass. In addition to sealing the dry air between the two layers of glass, a special metal film with good thermal performance should be coated on the middle air layer side of the outer glass. It can block the considerable energy of the sun to the room and play a greater heat insulation effect.
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