▎ 摘　　要

NOVELTY - A graphene and carbon nanotube synergistic high electric performance semi-conductive shielding material comprises 50-90 pts. wt. ethylene-ethyl acrylate copolymer, 5-25 pts. wt. ethylene octylene copolymer thermoplastic elastomer, 5-25 pts. wt. linear low density polyethylene, 5-10 pts. wt. white oil, 5-20 pts. wt. graphene microsheet powder, 5-20 pts. wt. single-wall carbon nanotube, 15-50 pts. wt. conductive carbon black, 0.5-2 pts. wt. dispersant, 0.2-1 pts. wt. auxiliary dispersant, 0.5-2 pts. wt. antioxidant, 0.1-0.8 pt. wt. anti-scorch agent, 0.2-1 pt. wt. metal ion passivant, 0.5-2 pt. wt. lubricant, 1-2 pts. wt. crosslinking agent and 0.5-1 pt. wt. auxiliary crosslinking agent. USE - The graphene and carbon nanotube synergistic high electric performance semi-conductive shielding material is used for medium-high voltage power cables semi-conductive shielding layer. ADVANTAGE - The product has excellent conductivity, volume resistivity temperature stability, thermal stability, anti-scorch, surface smoothness and mechanical property, reduces use amount of conductive filler, and improves processing performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing graphene and carbon nanotube synergistic high electric performance semi-conductive shielding material comprising uniformly mixing raw material components except crosslinking agent and auxiliary crosslinking agent in high speed mixer, using reciprocating single-screw mixing extruder for extruding and granulating, dehydrating and drying, entering shaking tank, absorbing crosslinking agent and auxiliary crosslinking agent, and sieving to remove debris and dust.