▎ 摘　　要

NOVELTY - Preparation of graphene modified polyester resin involves (S1) mixing and adding graphene and polyester resin into a pulverizing device for pulverization, (S2) adding the pulverized product of graphene and polyester resin into a stirring device for mixing and stirring to obtain a blend, (S3) adding curing agent, pigment, filler, deaerator, leveling agent and antioxidant to the blend, mixing evenly for the second time and extruding at high temperature, (S4) cooling the extrudate, tableting, abrasing and separating to obtain a graphene-modified polyester resin. A support column is fixedly connected to the bottom of the outer box. An inner box communicates with the top of the outer box is connected inside the outer box. A sliding rod is connected with the sliding groove is fixedly connected to the outer side of the connecting plate. A valve is installed on the discharge pipe. A collection box is connected to the bottom of the discharge pipe. USE - Preparation of graphene modified polyester resin for rail anticorrosive paint. ADVANTAGE - The graphene and polyester resin mixture at the meshing point of the crushing roller and the rack is crushed, and the situation of the material being spun out is improved thereby improving the crushing quality. DETAILED DESCRIPTION - Preparation of graphene modified polyester resin involves (S1) mixing and adding graphene and polyester resin into a pulverizing device for pulverization, (S2) adding the pulverized product of graphene and polyester resin into a stirring device for mixing and stirring to obtain a blend, (S3) adding curing agent, pigment, filler, deaerator, leveling agent and antioxidant to the blend, mixing evenly for the second time and extruding at high temperature, (S4) cooling the extrudate, tableting, abrasing and separating to obtain a graphene-modified polyester resin. The crushing device includes an outer box. A support column is fixedly connected to the bottom of the outer box. An inner box communicates with the top of the outer box is fixedly connected inside the outer box. Multiple crushing rollers are rotatably installed on the inner surface wall of the outer box. A guide rod is fixedly connected to the bottom of the inner box. A connecting plate is sleeved on the outer side of the guide rod. The outer side of the inner box is provided with a chute corresponding to the crushing roller. A sliding rod is slidably connected with the sliding groove is fixedly connected to the outer side of the connecting plate. The free end of the sliding rod is fixedly connected with a rack meshingly connected with the crushing roller. The inner box is provided with a driving device for driving the connecting plate to move in a vertical direction. The top of the outer box is connected with multiple feeding pipes corresponding to the meshing position of the crushing roller and the rack. The bottom of the outer box is connected with a discharge pipe. A valve is installed on the discharge pipe. A collection box is connected to the bottom of the discharge pipe.