▎ 摘　　要

NOVELTY - Graphene/polyester thermoplastic elastomer composite comprises 5-30 pts. wt. prepolymer A, 5-30 pts. wt. prepolymer B and 40-90 pts. wt. prepolymer C, where the prepolymer A is reduced graphene oxide/aliphatic high crystallinity polyester prepolymer having a crystallinity of 30-95%, the prepolymer B is reduced graphene oxide/furan type low crystallinity polyester prepolymer having a crystallinity of 15-50% and the prepolymer C is reduced graphene oxide/amorphous polyester prepolymer having a glass transition temperature of less than -40 degrees C. USE - The method is useful for preparing the graphene/polyester thermoplastic elastomer composite. ADVANTAGE - The composite: has high mechanical property and conductivity; and comprises reduced graphene oxide, which can be well dispersed in the thermoplastic block polyester elastomer, thus improving mechanical property of the material, and has good thermal performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the graphene/polyester thermoplastic elastomer composite comprising (a) preparing pre-polymer A by placing graphene oxide in a reactor containing an aliphatic diol, magnetically stirring, ultrasonically dispersing to obtain graphene oxide/aliphatic glycol mixture, adding aliphatic group or acid anhydride to the reactor, heating to 130-180 degrees C, carrying out esterification reaction for 1-3 hours under the protection of nitrogen, collecting more than 90% of the theoretical amount of water, adding an antioxidant, catalyst and graphene oxide reducing agent, heating to 200-220 degrees C at less than 2000 Pa and continuing the reaction for 1-5 hours, (b) preparing pre-polymer B by placing graphene oxide into the reactor containing aliphatic diol, magnetically stirring, then ultrasonically dispersing to obtain graphene oxide/diol mixture, adding the dibasic acid with a furan ring structure, a catalyst and a heat stabilizer to the reactor, heating to 160-210 degrees C, carrying out esterification reaction for 1-3 hours under the protection of nitrogen, collecting 90% of the theoretical amount of water, adding an antioxidant and graphene oxide reducing agent, heating to 220-240 degrees C at 2000 Pa and continuing the reaction for 1-5 hours, (c) preparing pre-polymer C by placing graphene oxide into the reactor containing aliphatic diol, magnetically stirring, ultrasonically dispersing to obtain graphene oxide/aliphatic diol mixture, adding aliphatic dibasic acid or anhydride into the reactor, heating to 130-180 degrees C during stirring, carrying out esterification reaction for 1-4 hours under the protection of nitrogen, collecting more than 90% of the theoretical amount of water, adding antioxidant, catalyst and graphene oxide reducing agent, heating to 200-220 degrees C at 2000 Pa and continuing the reaction for 2-5 hours, and (d) mixing pre-polymers A, B and C, adding a chain extender, heating to 110-180 degrees C under the protection of nitrogen atmosphere, polymerizing for 20-60 minutes under vacuum, and continuing the reaction for 0.5-2 hours.