中文摘要：

采用原位加热还原的工艺将氧化石墨烯／热塑性聚氨酯复合材料进行还原，得到了不同体积分数的热还原石墨烯／热塑性聚氨酯复合材料，并对其热还原温度及压阻特性进行了分析。结果表明：200℃为该复合材料体系适宜的还原温度，在此温度下保持2h后，氧化石墨烯复合材料的电性能优异，填料分散均匀，其中石墨烯体积分数分别为2．42％与3．58％的复合材料表现出优异的压阻重复性，为制备高性能柔性压阻复合材料提供了一种新途径。

英文摘要：

Graphene oxide（GO）/thermoplastic polyurethane（TPU） composites with different volume contents were prepared by in-situ heating reduction process, and the reduction temperature and piezoresistive characteristics of the composites were studied. The results show that 200 ℃ is a suitable reduction temperature for the GO/TPU composites. After exposing the GO/TPU composites at 200 ℃ for 2 h, the composites achieve excellent electrical properties and the conductive graphene is well dispersed. When the graphene volume content is 2.42% and 3.58%, the composites show excellent piezoresistive repeatability, which shows a new approach to prepare high performance soft piezoresistive composites.