Explain the difference between vacuum glass and insulating glass
What is the difference between vacuum glass and insulating glass? The difference between the performance of a word is different. The name of the hollow glass is not hollow. The middle of the two layers of glass has "gas". In most cases, the "gas" is air, and the quality is better. It is argon gas, and since it is invisible to the naked eye, it is said to be "empty".
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Vacuum glass is to draw a "vacuum" between two layers of glass. Basically, it can be said that there is no gas, it is really empty.
Why is the thermos insulated for a long time? Because the inner and outer walls of the inner tank are vacuum layers, which effectively block the conduction of heat. Vacuum glass is to seal the two sheets of flat glass, leaving a gap in the middle, vacuuming the gap and sealing the vent. The inner surface of the two sheets of glass is coated with one or two transparent low-emission films. The thermos bottle is composed of two inner and outer glass bulbs, the cavity is vacuumed, and the cavity is silver plated. Vacuum glass is equivalent to making the thermos a flat plate. Some people joked that the vacuum glass window is actually "put the thermos on the window."
If the thermos bottle at home is leaking, it will not be insulated, which will reflect the difference in the insulation performance between gas and air.
According to the data, the vacuum glass insulation performance is 2 to 3 times better than that of the insulating glass, and it is 6 times better than the ordinary single glass, which is much better than the general wall.
Another feature of vacuum glass is that it is much thinner than insulating glass, saving installation space and window frame material. At the same time, due to the good thermal insulation performance, its anti-condensation and fogging performance is also very good, which can avoid the unpleasant appearance of the condensation on the window and the invisible appearance of the dew soaking window sill. In winter, you can reduce the feeling of coldness in front of the window and the feeling of "surface wind" under your feet.
In addition to good thermal insulation properties, vacuum glass sound insulation performance is better than insulating glass.
The wind-resistant strength of vacuum glass is about twice that of insulating glass made of the same glass, but the impact strength is not as good as that of insulating glass. This weakness can be solved by combining vacuum glass. For example, in the required position, laminated glass technology can be used to add tempered glass to one side or both sides of the vacuum glass to form a safety vacuum glass with high impact strength and wind pressure resistance. Undoubtedly, this cost will increase accordingly.
In recent years, China's new buildings are widely used, that is, insulating glass. Insulating glass is also known as the epoch-making "glass of today".
Vacuum glass started late compared with insulating glass. At present, vacuum glass is still in the initial stage, regardless of the maturity and scale of industrialization technology. However, due to its strong comprehensive performance advantage over insulating glass, the development prospects are very bright. As production scale expands and processes advance, prices will fall sharply. After a few years, vacuum glass is likely to replace insulating glass as the mainstream product of energy-saving glass, which can be said to be "glass of tomorrow."