▎ 摘　　要

NOVELTY - Airgel is obtained by directional freezing and drying a mixed solution of carbon fiber, binder and graphene oxide. The carbon fibers include hollow carbon fibers. USE - Airgel for use in anti-heat insulation material (claimed). ADVANTAGE - The airgel has light weight and good heat insulation. The airgel has a vertically oriented arrangement structure, endowing it with anisotropic properties, and can be applied in specific occasions. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing airgel, which involves: (1) mixing the carbon fiber, the binder and the graphene oxide dispersion, and directional freezing the obtained mixed solution to obtain a frozen block; (2) drying the obtained blocks to obtain the airgel.