▎ 摘　　要

NOVELTY - Graphene/polyester thermoplastic elastomer composite material comprises 10-50 pts. wt. prepolymer A and 50-9- pts. wt. prepolymer B. The prepolymer A is a reduced graphene oxide/aliphatic high crystallinity type polyester prepolymer having a crystallinity of 30-95%. The prepolymer B is a reduced graphene oxide/amorphous polyester prepolymer having a glass transition temperature of -40 degrees C or lower. USE - Graphene/polyester thermoplastic elastomer composite material. ADVANTAGE - The graphene/polyester thermoplastic elastomer composite material greatly improve mechanical properties of the material and impart excellent electrical and thermal conductivity to the material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a graphene/polyester thermoplastic elastomer composite, which involves: (A) placing graphene oxid in a reactor containing an aliphatic diol, magnetically stirring, and then ultrasonically dispersing to obtain a mixture of an oxynitride/aliphatic diol; (B) adding aliphatic saturated dibasic acid or acid anhydride and the graphene oxide reducing agent to the reactor in proportion, raising temperature to 130-180 degrees C, and carrying out esterification reaction under nitrogen for 1-3 hours, adding antioxidants and catalysts when the theoretical amount of water is collected 90%, raising temperature to 200-220 degrees C within the pressure range below 2000 pascals, continuing reaction for 1-5 hours to obtain prepolymer A; (C) placing graphene oxide in a reactor containing an aliphatic diol and a polyol, magnetically stirring, and then ultrasonically dispersing to obtain a graphene oxide/aliphatic diol and a polyol mixture; (D) adding aliphatic dibasic acid or anhydride, aliphatic polyol and graphene oxide reducing agent to the reactor in proportion, heating to 130-180 degrees C in the stirring stage, esterification reaction under nitrogen protection for 1-4 hours, adding antioxidant and a catalyst when amount of water is more than 90%, and raising temperature 200-220 degrees C in a pressure range of 2000 pascals or less, and the reaction is continued for 2-5 hours to obtain prepolymer B; and (E) mixing prepolymer A and the prepolymer B, adding chain extender, raising temperature to 110-140 degrees C, melt-polymerizing under nitrogen atmosphere for 20-60 minutes, and having a vacuum degree of 2000 Pascals, reacting for 0.5-2 hours to obtain a graphene/polyester thermoplastic elastomer composite.