The main components of glass are silica and other oxides. Glass is an amorphous inorganic nonmetallic material, which is generally made of a variety of inorganic minerals (such as quartz sand, borax, boric acid, barite, barium carbonate, limestone, feldspar, soda ash, etc.) as the main raw materials, and a small amount of auxiliary raw materials. The main component of glass is glass, which is widely used in buildings for wind insulation and light transmission. It belongs to mixture. In addition, there are colored glass mixed with oxides or salts of some metals to show color, and tempered glass prepared by physical or chemical methods.
The emergence and use of glass has a history of more than 4000 years in human life. Small glass beads have been unearthed from the ruins of Mesopotamia and ancient Egypt 4000 years ago.
Glass includes quartz glass, silicate glass, sodium calcium glass, fluoride glass, high temperature glass, high pressure resistant glass, explosion-proof glass, etc. it is widely used in construction, daily use, art, medical treatment, chemistry, electronics, instruments, nuclear engineering and other fields. （BoLiZhuYaoChengFen）