▎ 摘　　要

NOVELTY - Preparation of an anti-abalone shell structured epoxy-graphene nanocomposite involves blending graphene oxide and sodium carboxymethyl cellulose solution, adding L-ascorbic acid powder to graphene oxide-carboxymethylcellulose sodium mixed solution and stirring, evacuating mixed solution in vacuum dryer, casting and obtaining mixed solution of ice, immersing one end of C-shaped bent steel plate in thermal insulation foam box and other end under normal temperature conditions, placing polydimethylsiloxane rubber mold on surface of bent steel plate, pouring mixed solution for ice casting into polydimethylsiloxane rubber mold, pouring liquid nitrogen into foam box, continuously cooling steel plate, solidifying mixed solution of ice, freeze-drying, placing layered framework into an oven for thermal reduction, carrying out vacuum assisted infiltration of epoxy prepolymer into graphene-sodium carboxymethylcellulose layered framework and heat curing in an oven. USE - Preparation of an anti-abalone shell structured epoxy-graphene nanocomposite for aerospace, energy storage and tissue engineering applications. ADVANTAGE - The method provides anti-abalone shell structured nanocomposite, which have organic matter content much higher than inorganic reinforcing material and has excellent fracture toughness and crack self-monitoring function. DETAILED DESCRIPTION - Preparation of an anti-abalone shell structured epoxy-graphene nanocomposite involves blending graphene oxide and sodium carboxymethyl cellulose solution, adding deionized water to adjust concentration of mixed solution to obtain a graphene oxide-sodium carboxymethyl cellulose mixed solution, adding L-ascorbic acid powder to graphene oxide-carboxymethylcellulose sodium mixed solution and stirring to dissolve, evacuating mixed solution in a vacuum dryer to evacuate to remove air bubbles, casting and obtaining mixed solution of ice, immersing one end of C-shaped bent steel plate in thermal insulation foam box and other end under normal temperature conditions, placing polydimethylsiloxane rubber mold on surface of bent steel plate, pouring mixed solution for ice casting into polydimethylsiloxane rubber mold, pouring liquid nitrogen into foam box, continuously cooling steel plate, solidifying mixed solution of ice until it is completely frozen, removing frozen mixed solution for ice casting from polydimethylsiloxane rubber mold and transferring to freeze dryer for freeze-drying to obtain graphene oxide-sodium carboxymethyl cellulose layered framework, placing layered framework into an oven for thermal reduction to obtain graphene-carboxymethyl cellulose sodium layered framework, carrying out vacuum assisted infiltration of epoxy prepolymer into graphene-sodium carboxymethylcellulose layered framework and heat curing in an oven.