▎ 摘　　要

NOVELTY - A cable sheathing material comprises 25-85 pts. wt. thermoplastic polyurethane, 5-45 pts. wt. graphene, 5-35 pts. wt. flame retardant, 0.5-5 pts. wt. compatibilizer and 0.02-0.1 pt. wt. antioxidant. The graphene is graphene whose surface is treated with a coupling agent. USE - Cable sheathing material. ADVANTAGE - The cable sheathing material has excellent mechanical property, tensile strength of more than 25.2 MPa, flexibility, elongation at break of more than 405%, electromagnetic shielding function and flame retardance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the cable sheathing material, which involves: (1) weighing the above-mentioned raw materials according to the weight ratio and uniformly mixing the weighed materials in a high-speed blending machine to obtain a mixture; and (2) extruding and granulating the mixture obtained in step (a) through a twin-screw extruder to obtain the product, where the screw temperature of the twin-screw extruder is 170-210 degrees C, and the screw speed is 200-600 rpm.