▎ 摘　　要

NOVELTY - Graphene rubber-plastic master batch is claimed. The graphene rubber-plastic master batch is prepared by intercalating a swelling monomer into an expanded graphite layer, performing double ring-opening polymerization reaction under a cationic initiator to obtain a mixture, then mixing with carrier resin, dispersant and lubricant, then adding into a screw extruder, extruding and granulating, where the expanding monomer is 1,5,7,11- tetraoxaspiro(5,5)undecane. USE - Used as graphene rubber-plastic master batch. ADVANTAGE - The master batch uses expanded monomer, which promotes significant expansion of the graphite layer spacing by the volume expansion that occurs in its ring-opening polymerization, facilitates the stripping and dispersing of graphene during subsequent granulation, which significantly improves the dispersibility of graphene in the master batch, and also improves overall performance of the material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing graphene rubber-plastic master batch, comprising (i) adding expanded graphite with expansion monomer into the reaction kettle, mixing uniformly, treating under pressure of 30-50 MPa for 40-60 minutes to make expanded monomer ingredient to permeate the expanded graphite layers to finish the inserting layer to obtain intercalation modified expanded graphite layer, (ii) continuously adding cationic initiator into the reaction kettle, performing double-opening polymerization reaction at 130-140 degrees C, volume expanding expanded monomer between the expanded graphite layers, weakening of the Van der Waals force between the expanded graphite layer, promoting the spacing of the graphite layers, significantly expanding to facilitate subsequent stripping, cooling and then discharging to obtain mixture, and (iii) mixing the mixture with the carrier resin, dispersant, lubricant and stirring uniformly, adding in a screw extruder containing shearing teeth, peeling off the expanded graphite into graphene by the strong shearing action of the shearing teeth, uniformly dispersing graphene in the carrier resin in the direction of rotation of the screw, extruding and granulating to obtain final product.