Foam glass insulation board was first invented by Corning Company in Pittsburgh, USA. It is an inorganic nonmetallic glass material made of broken glass, foaming agent, modification additive and foaming accelerator. After fine grinding and uniform mixing, it is melted, foamed and annealed at high temperature. It consists of a large number of uniform bubble structures with a diameter of 1 ~ 2mm. Among them, the sound-absorbing foam glass insulation board is more than 50% open-cell bubbles, and the thermal insulation foam glass is more than 75% closed-cell bubbles. The product density is 160-220kg/m3, which can be adjusted by changing the production technical parameters according to the use requirements. Foam glass insulation board is widely used in petroleum, chemical industry, underground engineering, national defense and military industry for its advantages of light weight, low thermal conductivity, low water absorption, non-combustion, non-mildew, high strength, corrosion resistance, non-toxicity and stable physical and chemical properties, and can achieve the effects of heat insulation, heat preservation, cold preservation and sound absorption. In addition, it is also widely used for thermal insulation of external walls and roofs of civil buildings. With the increasing demand for environmental protection, the bubble. Foam glass is a safe, reliable and durable building energy-saving and environmental protection material. Its inorganic silicate material has independent closed micropores, which are airtight, nonflammable, bite-proof, moth-proof, acid and alkali-resistant (except hydrofluoric acid), non-toxic, non-radioactive, stable in chemical properties, easy to process and non-deformable.