▎ 摘　　要

NOVELTY - Preparation of graphene involves dissolving functional monomer and surfactants in a solvent, soaking graphite, transporting solvent functional monomer into the graphite layer, leaving still for specified time to obtain a modified graphite, adding polymerization initiator, polymerizing, increasing the gap between the graphite layers, reducing graphite intercalation force, providing mechanical shearing force, adding to a solvent, adding depolymerization reaction catalyst, breaking polymer chain to obtain oligo-layer graphene, and repeating the process until obtaining product. USE - Preparation of graphene (claimed). ADVANTAGE - The method enables economical preparation of graphene. DETAILED DESCRIPTION - Preparation of graphene involves dissolving functional monomer and surfactants in a solvent, soaking graphite in the solvent, transporting solvent functional monomer into the graphite layer, leaving still for specified time to obtain a modified graphite, adding polymerization initiator, polymerizing, increasing the gap between the graphite layers, reducing graphite intercalation force, providing mechanical shearing force to obtain mixture of oligo-layer graphene and functional monomer, adding to a solvent, adding depolymerization reaction catalyst, breaking polymer chain to obtain oligo-layer graphene, and repeating the process until obtaining product.