▎ 摘　　要

NOVELTY - Preparation of anionic clay/graphene nano-composite material comprises under argon atmosphere, dropwise adding anionic clay layer to colloidal solution, delaminating graphene negatively charged colloidal solution, adding 2 mL hydrazine hydrate to 1 g anionic clay/negatively charged graphite oxide composite material powder, reacting for 1-5 hours, reducing, drying in vacuum to obtain required anionic clay/graphene nano composite material, grinding, sieving by 200 meshes sieve to obtain anionic clay/graphene composite material powder. USE - Method for preparing anionic clay/graphene nano-composite material used for formation of composite sandwich structure (claimed). DETAILED DESCRIPTION - Preparation of anionic clay/graphene nano composite material comprises: (A) adding 0.1-10 g anionic clay to 1 L pure dimethyl formamide solution, stirring, and obtaining 0.1-10 g/L anionic clay colloidal solution; (B) adding 5 g negatively charged graphene powder to 500 ml pure methyl amides liquid, stirring, and obtaining 1 g/L negatively charged graphene colloidal solution; (C) under argon atmosphere, dropwise adding anionic clay layer to colloidal solution, delaminating graphene negatively charged colloidal solution, at mass ratio of anionic clay colloid layer and graphene of 0.2:1-20:1, stirring to obtain a flocculent precipitate, washing flocculent precipitate, centrifuging, drying in vacuum to obtain anionic clay/negatively charged/graphene composite material, grinding, sieving to obtain anionic clay/negatively charged graphite oxide composite material powder; and (D) adding 2 mL hydrazine hydrate to 1 g anionic clay/negatively charged graphite oxide composite material powder, reacting for 1-5 hours, reducing, drying in vacuum to obtain required anionic clay/graphene nano composite material, grinding, sieving by 200 meshes sieve to obtain anionic clay/graphene composite material powder. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the anionic clay/graphene nano composite material.