Preparation, Characterization and Properties of Silica Aerogel via Ambient Pressure Drying;

The thermal insulation material with ultra-low thermal conductivity made by using fiber felt to compound with SiO_2 aerogels and ambient pressure drying

Using industrial water glass as silica sources, SiO2 aerogels were synthesized via ambient pressure drying technique.

Carbon xerogels with high electrical conductivity were prepared with resorcin /formaldehyde via ambient drying technology and were characterized by XRD and four-probe electrical conductivity measurement.

Hydrophobic silica dioxide aerogels, modified by using surface modification agent of hexmethyldisilazane(HMDZ),have been prepared from cheap polydiethoxysiloxane (PDEOS) via ambient drying.

Hydrophobic silica (SiO_2) aerogels were prepared from cheap water glass, directly modified with surface modifier of hexamethyldisiloxane/ trimethylchlorosilane (HMDSO/TMCS) without solvent exchange and via ambient drying.

The inorganic aerogel preparation through conventional drying and subcritical drying after solvent exchange or silation of the hydrogel is analyzed.

By controlling solution composition and surrounding conditions, the RF aerogel films with the thickness of micron-scale were successfully produced under conventional drying instead of supercritical drying.