▎ 摘　　要

NOVELTY - Reinforced graphene composite aerogel comprises two-dimensional nanographene sheets, where the two-dimensional nano-graphene sheet is loaded with nano-scale silicon carbon-nitride-aluminum oxide ceramic particles, the silicon carbon-nitride-aluminum oxide ceramic particles is connected to each other, and form a nano-interpenetrating structure with two-dimensional nano-graphene sheet, the silicon carbon-nitride-aluminum oxide ceramic particles and two-dimensional nano-graphene sheet form a porous skeleton network, and the porous framework network has nano-scale uniform pores. USE - The reinforced graphene composite aerogel is useful for thermal protection requirements of aircraft in high-temperature environment. ADVANTAGE - The aerogel has porous skeleton network, nano-scale uniform pores, excellent mechanical properties and good high-temperature thermal insulation properties, which can meet thermal protection requirements of aircraft in high-temperature environments. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparing reinforced graphene composite aerogel, comprising choosing graphene oxide and polysilazane ceramic precursors as raw materials, using aluminum-tri-sec-butoxide as an aluminum source, and divinylbenzene as a cross-linking agent, adding an organic solvent to obtain wet gel by hydrothermal reaction, drying wet gel by supercritical carbon dioxide to obtain ceramic precursor/reduced graphene oxide aerogel, high temperature cracking, and converting ceramic precursor aerogel into ceramic aerogel to obtain silicon carbon-nitride-aluminum oxide/rGO composite aerogel.