▎ 摘　　要

NOVELTY - A graphene composite-high impact polystyrene comprises 100 pts. wt. graphene, 80-100 pts. wt. high impact polystyrene, 4-6 pts. wt. antimony trioxide, 12-14 pts. wt. decabromodiphenyl ether, 1.5-3.5 pts. wt. zinc stearate, 16-20 pts. wt. tetrabromobisphenol A, 20-30 pts. wt. carbon paste electrode, 2-8 pts. wt. tri-basic lead sulfate, 10-20 pts. wt. octabromodiphenyl ether and 3-7 pts. wt. hexabromocyclododecane. USE - Graphene composite-high impact polystyrene (claimed). ADVANTAGE - The economical graphene composite-high impact polystyrene has excellent flame retardance, excellent mechanical properties, Vicat softening point of 100-120 degrees C, bending strength of 65 MPa at 45 degrees C, bending modulus of 2400 MPa at 2200 degrees C, breaking elongation rate of 60% at 40 degrees C, tensile strength of 50 MPa at 30 degrees C, notched impact strength of 15-35 kJ/m2, oxygen index of 30-35%, Rockwell hardness of 106-110 and melt flow index of 7.5-9.5 g/10 minutes, and prepared by simple operation. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation of graphene composite-high impact polystyrene, which involves weighing graphene, high impact polystyrene, antimony trioxide, decabromodiphenyl ether, zinc stearate, tetrabromobisphenol A, carbon paste electrode, tribasic lead sulfate, octabromodiphenyl ether and hexabromocyclododecane, stirring the raw materials at 120 degrees C for 60 minutes at the rate of 400 rpm, carrying out plasticized granulation in twin-screw extruder, extruding at 170 degrees C, 190 degrees C, 200 degrees C, 205 degrees C, 205 degrees C, 210 degrees C, 210 degrees C, 205 degrees C and 190 degrees C and stirring at 70 rpm to obtain final product.