METHOD FOR PREPARING HYDROPHOBIC SILICA AEROGEL AND HYDROPHOBIC SILICA AEROGEL PREPARED BY USING THE SAME

摘要

In the present invention, adding an acid to a water glass solution to prepare a hydrogel; Preparing the pulverized hydrogel by pulverizing the hydrogel with water; And a method of preparing a hydrophobic silica airgel comprising mixing the ground hydrogel with a non-polar organic solvent, an inorganic acid, and a surface modifier, followed by drying, and a hydrophobic silica airgel prepared using the same. A hydrophobic silica airgel having a high tap density can be efficiently produced by the manufacturing method according to the present invention.