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SiO2 aerogel material

2020-12-15 16:21
SiO2 aerogel is currently the most researched and mature high-temperature aerogel in the field of heat insulation. Its porosity is as high as 80%-99.8%, the typical size of pores is 1-100nm, and the specific surface area is 200-1000m2/g. , And the density can be as low as 3kg/m3, and the room temperature thermal conductivity can be as low as 12m.W/(mK).
 
SiO2 aerogel materials are usually combined with infrared sunscreens and reinforcements to improve the thermal insulation and mechanical properties of SiO2 aerogels, making them a nanoporous super thermal insulation material with practical value and good performance. Thermal insulation and mechanical properties are mainly used for thermal insulation in aerospace, military, electronics, construction, household appliances and industrial pipelines.
 
Commonly used infrared sunscreens include silicon carbide, TiO2 (rutile and anatase), carbon black, potassium hexatitanate, etc.; commonly used reinforcement materials include ceramic fiber, alkali-free ultra-fine glass fiber, polycrystalline mullite fiber, Aluminum silicate fiber, zirconia fiber, etc.