▎ 摘　　要

NOVELTY - Graphene aerogel based on three-dimensional (3D) printing, comprises 3.6-4.6 pts. wt. graphene oxide, 7.2-9.2 pts. wt. modified graphene, 0.6-1.2 pts. wt. silicate fiber and 22-30 pts. wt. dispersion solvent. USE - As graphene aerogel based on 3D printing. ADVANTAGE - The graphene aerogel enhances the mechanical properties of graphene aerogels, has uniform pore distribution and highly ordered network structure, has no cracks or deformation during the printing process, improves the mechanical properties of the graphene aerogel and has excellent compressive strength and thermal conductivity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the graphene aerogel involving (i) adding graphene oxide and modified graphene to the dispersion solvent, stirring at a rate of 450-850 rpm for 20-25 minutes, again stirring at a rate of 1200-1500 rpm for 10-15 minutes to prepare mixed solution of graphene oxide and modified graphene, (ii) adding the silicate fibers to the graphene oxide and modified graphene mixed solution prepared in the step (i), magnetically stirring for 15-20 minutes, and ultrasonically treating for 60-120 minutes to obtain graphene oxide and modified graphene mixed dispersion, (iii) reacting the graphene oxide and modified graphene mixed dispersion prepared in the step (ii) at 145-165 degrees C for 3-6 hours, packing the obtained graphene oxide and modified graphene mixed hydrogel into a three-dimensional (3D) printer and printing to obtain a 3D printed graphene oxide and modified graphene mixed portion, and (iv) drying the 3D printed graphene oxide and modified graphene mixed portion obtained in the step (iv) and step (iii) under vacuum conditions, reducing in a chemical reducing agent vapor atmosphere at 85-95 degrees C for 10-12 hours, and finally under the condition of a temperature of 325-365 degrees C, performing heat treatment for 4-8 hours to obtain the 3D printing-based graphene aerogel.