▎ 摘　　要

NOVELTY - Method for preparing graphene modified polyester chip, involves performing one-stage esterification reaction and two-stage esterification reaction on 100 pts. wt. ethylene glycol, 10-200 pts. wt. ethylene glycol graphene mixture and 200-540 pts. wt. terephthalic acid, casting belt and cutting to obtain the mixture. USE - The method is used for preparing graphene modified polyester chip for preparing modified polyester fiber used for manufacturing fabrics (all claimed). ADVANTAGE - The modified polyester fiber has excellent thermal conductivity and mechanical and antistatic properties. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a graphene modified polyester chip prepared using above-mentioned method; and (2) a modified polyester fiber prepared by drying graphene modified polyester chip, dewatering, metering, melt spinning, cooling, oiling, stretching, heat setting, winding and forming.