| abstract |
In the present invention, a silica sol is prepared by adding a silica precursor, water and a polar organic solvent to the reaction solution to prepare a reaction solution by reacting the silane-based surface modifier with an alcohol compound, , Comprising the steps of preparing a silica gel-based composite, and drying the silica gel-based composite, and a silica airgel-containing blanket manufactured therefrom. Incorporation of silica aerogels with low thermal conductivity and excellent mechanical flexibility, including silica aerogels with excellent physical properties, particularly high porosity, with high hydrophobicity, with minimal surface modification without additional surface modification steps A blanket can be manufactured. |