▎ 摘　　要

NOVELTY - Preparing graphene/silicon dioxide composite gas gel material comprises e.g. mixing graphene oxide/silicon dioxide system hydrogel silica precursor solution and graphene oxide mixed solution and stirring uniformly, forming the composite precursor solution, heating, obtaining grapheme oxide/silicon dioxide system hydrogel composite precursor solution, preparing graphene oxide/silicon dioxide system alcohol gel, placing the graphene oxide/silicon dioxide system hydrogel in alcoholic solvent substitution liquid in the solvent substitution, obtain alcohol gel. USE - The method is useful for preparing graphene/silicon dioxide composite gas gel material (claimed). ADVANTAGE - The material: is capable of with allowing to stand at high temperature of 400 degrees C or higher; has good high temperature hydrophobic property; and enlarges the silicon dioxide composite gas gel application range. DETAILED DESCRIPTION - Preparing graphene/silicon dioxide composite gas gel material comprises (i) mixing graphene oxide/silicon dioxide system hydrogel silica precursor solution and graphene oxide mixed solution and stirring uniformly, forming the composite precursor solution, heating, obtaining grapheme oxide/silicon dioxide system hydrogel composite precursor solution, (ii) preparing graphene oxide/silicon dioxide system alcohol gel, placing the graphene oxide/silicon dioxide system hydrogel in alcoholic solvent substitution liquid in the solvent substitution, obtain alcohol gel, (iii) preparing graphene oxide/silicon dioxide composite gas gel, drying the alcohol gel, to obtain the graphene oxide/silicon dioxide composite gas gel, and (iv) placing the graphene/silicon dioxide composite gas gel to the graphene oxide/silicon dioxide composite gas gel at high temperature to obtain the graphene/silicon dioxide composite gas gel material. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of flowchart of the preparing graphene/silicon dioxide composite gas gel material (Drawing includes non-English language text).