What is the difference between vacuum glass and insulating glass? The difference in performance is very different, the insulating glass is called "hollow" theoretically not empty, there is "gas" in the middle of the two layers of glass, in most cases "gas" is air, and the better quality is argon, because the gas is not visible to the naked eye, so it is said to be "empty".
Vacuum glass is a "vacuum" between two layers of glass, which can basically be said to be empty and empty.
Why can a thermos bottle stay warm for a long time? It is due to the vacuum layer between the inner and outer walls of the inner tank, which effectively blocks the conduction of heat. Vacuum glass is to seal two pieces of flat glass around them, leave a gap in the middle, draw the gap into a vacuum and seal the exhaust hole. The inner surface of the two pieces of glass is coated with one or two layers of transparent low-emissivity film. The thermos flask is composed of two layers of glass shells inside and outside, and the cavity is pumped into a vacuum, and the cavity is silver-plated. Vacuum glass is equivalent to making a thermos flask into a flat type, and some people jokingly say that the theory of vacuum glass window is "making a thermos flask on the window".
If the thermos at home is leaking, it will not be insulated, which can show the difference between the thermal insulation performance of gas and non-air.
According to data, the thermal insulation performance of vacuum glass is 2 to 3 times better than that of insulating glass, more than 6 times better than ordinary monolithic glass, and much better than ordinary walls.
Another characteristic of vacuum glass is that it is much thinner than insulating glass, which can save installation space and window frame materials. At the same time, due to its good thermal insulation performance, its anti-condensation and fogging performance is also very good, which can avoid annoying things such as invisibility of condensation and fog on the window and dew soaking the window sill. In winter, it can reduce the feeling of cold in front of the window and the feeling of "surface wind" under your feet.
In addition to good thermal insulation performance, vacuum glass has better sound insulation performance than insulating glass.
The wind pressure resistance 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, and this weakness can be dealt with by combining vacuum glass. For example, in the required position, laminated glass technology can be used to add tempered glass to one or both sides of the vacuum glass to form a safe vacuum glass with high impact strength and wind pressure resistance. Undoubtedly, this will increase the cost accordingly.