▎ 摘　　要

NOVELTY - Preparing block graphene airgel comprises (i) preparing graphene oxide dispersion liquid or graphene dispersion liquid, (ii) adding propylene oxide into step (i) good graphene oxide dispersion liquid or graphene dispersion liquid, transferring mixture into reaction kettle, (iii) placing the reaction kettle in baking box, carrying out hydrothermal reaction, taking out reaction kettle after reaction completes, cooling to room temperature to obtain block body graphene wet gel, (iv) drying step (iii) graphene wet gel to obtain block shape graphene airgel. USE - The method is useful for preparing block graphene airgel (claimed). ADVANTAGE - The method is simple, suitable for industrial production, has good repeat character, mild reaction conditions. The graphene airgel block degree is integrated, has low density, good elastic and high machinery strength properties.