METHOD FOR PRODUCING NANOSTRUCTURED POWDER COMPOSITE BASED ON GRAPHENE AND ZIRCONIUM DIOXIDE USING HEXAMETHYLENALNINE Russian patent published in 2024 - IPC C01B32/184 B82B3/00 C04B35/48 

FIELD: ceramic materials.

SUBSTANCE: creation of nanostructured powders for the production of fine-grained ceramic materials. A method for producing a nanostructured powder composite based on graphene and zirconium dioxide using hexamethylenalnine involves using a solution of hexamethylenalnine in isopropanol to form and stabilize a Zr-containing sol. At the stage of interaction of this sol and a suspension of oxygen-free graphene in a water-alcohol mixture, the sol particles are isolated between the graphene sheets, where the sol-gel transition occurs at a temperature of 85-95°C. After which the colloid is evaporated at 95-98°C and annealing at 500°C, leading to the completion of the formation of the composite.

EFFECT: formation of composites in the form of nanostructured powders consisting of ZrO₂ crystallites and 2D graphene sheets.

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