▎ 摘　　要

NOVELTY - Preparation of polydopamine nano-layer-coated graphene oxide filled epoxy resin composite material involves (S1) preparing natural flake graphite into graphene oxide, (S2) self-polymerizing polydopamine to coat graphene oxide, (S3) coating graphene oxide-filled epoxy resin with polydopamine nanolayers. USE - Preparation of polydopamine nano-layer-coated graphene oxide filled epoxy resin composite material . ADVANTAGE - The graphene oxide has good insulating properties and mechanical properties, and the interfacial compatibility with epoxy is improved through dopamine coating, and the interface stress between graphene oxide and epoxy resin is reduced. The internal stress in the curing process of epoxy resin is reduced as much as possible, so as to obtain an epoxy resin composite material with both insulating properties and mechanical properties.