中文摘要：

采用热还原的方法由氧化石墨烯（GO）制备得到还原石墨烯（RGO），并将两种石墨烯与热塑性聚氨酯（TPU）复合制得纳米复合材料薄膜。进而考察了两种纳米复合材料薄膜的导电、导热及力学性能。结果表明：在TPU中加入GO能够得到高导热、低导电的纳米复合材料，而加入RGO则得到高导热、高导电的纳米复合材料；同时，GO和RGO的加入，均能显著提高TPU的拉伸强度和模量。

英文摘要：

Graphene oxide （GO） was reduced by a thermal reduction method to prepare reduced graphene ox- ide （RGO）. Nanocomposite films were fabricated for GO/thermoplastic polyurethane （TPU） and RGO/TPU. Fur- thermore, thermal conductivity, electrical conductivity and mechanical properties of the nanocomposite films were investigated. The results show that GO/TPU nanocomposites have high thermal conductivity and low electrical con- ductivity, and RGO/TPU nanocomposites have high thermal conductivity and high electrical conductivity as well. Moreover, addition of the GO and RGO can significantly improve the tensile strength and modulus of TPU, respec- tively.