What is the difference between vacuum glass and insulating glass? The difference between the word performance is different, insulating glass named “hollow” is actually not empty, two layers of glass in the middle of the “gas”, in most cases “gas” is air, better quality is argon, due to the naked eye can not see the gas, so it is said to be “empty”. Vacuum glass is between the two layers of glass into a “vacuum”, basically can be said to have no gas, is really empty. Why can a thermos bottle keep warm for a long time? It is because there is a vacuum layer between the inner and outer walls of the liner, effectively blocking the conduction of heat. Vacuum glass is two pieces of flat glass sealed up around the middle of the gap, the gap into a vacuum and seal the vent. The inner surface of the two pieces of glass is coated with one or two layers of transparent low-e film. Thermos bottle liner by the inside and outside of the two layers of glass shell cavity, the cavity into a vacuum, silver-plated cavity. Vacuum glass is equivalent to the thermos bottle made of flat, some people jokingly say, vacuum glass window is actually “the thermos bottle to do on the window”.

Home warm water bottle if the leakage of gas, it is not insulated, which can reflect the difference between gas and gas-free insulation performance. Some data show that the vacuum glass insulation performance is 2 to 3 times better than insulating glass, more than 6 times better than ordinary monolithic glass, much better than the general wall. Another feature of vacuum glass is much thinner than insulating glass, which can save installation space and window frame materials. At the same time, due to good thermal insulation performance, its anti-condensation fogging performance is also very good, can be eliminated on the window condensation fog caused by the invisible outside view and dew soaked window sill and other annoying things. In winter, it can reduce the feeling of coldness in front of the window and the feeling of “surface wind” under the feet.

In addition to good thermal insulation performance, vacuum glass acoustic performance is also better than insulating glass. Vacuum glass wind pressure strength is about twice as strong as the same glass made of insulating glass, but the impact strength is not as strong as insulating glass, this weakness can be solved by combining vacuum glass. For example, in the required location, can use laminated glass technology in the vacuum glass on one side or both sides plus tempered glass to make up the impact strength and wind pressure strength are very high security vacuum glass. Undoubtedly, the cost will increase accordingly.

In recent years, China's new buildings are the most widely used, is the insulating glass. Insulating glass is also known as a sense of the times, “today's glass” title. Vacuum glass than insulating glass started late, at present, whether from the industrialization of technical maturity and scale, vacuum glass is still in the emerging stage. But because it has a strong comprehensive performance advantage over insulating glass, the development prospects are very bright. With the expansion of production scale and process progress, the price will also drop significantly. After a number of years, vacuum glass is likely to replace insulating glass to become the mainstream of energy-saving glass products, can be said to be “tomorrow's glass”.