What Is Vacuum Glass?

Vacuum glass is a new type of glass deep processing product, which is developed based on the principle of thermos. The structure of vacuum glass is similar to that of hollow glass, but the difference is that the gas in the vacuum glass cavity is very thin, almost close to vacuum.
Vacuum glass is to seal two pieces of flat glass around, evacuate the gap and seal the exhaust hole. The gap between the two pieces of glass is 0.3mm. Generally, at least one of the two pieces of vacuum glass is low-emissivity glass, which will minimize the heat lost by conduction, convection and radiation of vacuum glass. Its working principle is the same as the heat preservation and heat insulation principle of glass thermos. Vacuum glass is the fruit of the cooperation of multiple disciplines, technologies and processes such as glass technology and material science, vacuum technology, physical measurement technology, industrial automation and architectural science.
Invention
In 1990, Tang Jianzheng, who had taught in the Department of Physics of Peking University for more than 30 years, came to the University of Sydney, Australia as a visiting scholar and began to jointly study flat vacuum glass with Professor R. E. Collins, then director of the Department of Applied Physics of the school. After three years of hard work, the world's first 1m x 1m flat vacuum glass sample was produced in 1993. Although the inventors were Tang Jianzheng and R. E. Collins, the patent belonged to the University of Sydney. In 1996, the University of Sydney transferred the patent to Nippon Sheet Glass Co., Ltd., and the Japanese began mass production of vacuum glass the following year.