SiO2 aerogel is a kind of lightweight material with unique nano porous network structure. Because of its extremely low refractive index, thermal conductivity and dielectric constant, high specific surface area and selective permeability to gas, it has broad application prospects in many fields such as thermal insulation materials, sound insulation materials, filter materials and catalyst carriers, especially as a high-performance thermal insulation material, it has received widespread attention.

☆ Ethyl orthosilicate

☆ Polysilicate-40