随着对温度传感器性能要求的不断提高，研制一种新型高性能温度传感器具有重要的意义。以石墨烯（graphene）为填料，环氧树脂（EP）为基体，通过超声及行星搅拌共混法制备了不同含量的石墨烯/环氧树脂纳米复合材料薄片，并在其两端加上电极制成温度传感器试件。同时，在温度范围30℃-100℃内研究了不同石墨烯含量对该纳米复合材料热-电阻效应的影响，并分析了其影响机理。研究结果表明，温度传感器的电阻随着温度升高而呈近似线性减小，表现出负温度系数（NTC）效应，并且石墨烯含量越高，电阻减小的幅度越小。经过三次热循环处理之后，传感器的热-电阻关系变化趋于稳定。

With the increasing performance requirements of the temperature sensor, to develop a new high-performance temperature sensor is of great significance .With graphene as the nanofiller and epoxy resin as the matrix, various of graphene/epoxy nanocomposite with different graphene addition were prepared by ultrasonic and planetary stirring. Electrodes were attached at both ends of the graphene/epoxy nanocomposite sheet to form the temperature sensor. The effects of graphene addition on the temperature-resistance properties of the nanocomposites were investigated at the temperature range of 30 °C-100 °C. The results showed that the resistance of the temperature sensor specimen decreased linearly with the increasing temperature, which demonstrated a negative temperature coefficient (NTC) effect. In addition, it is found that the higher the graphene content, the magnitude of the resistance change was smaller. After three thermal cycle treatments, the temperature-resistance relationship of the sensor tends to be stable.

国家自然科学基金项目（11572268）；西南科技大学校级科研项目（18LZX422, 14TDZK03）；西南科技大学研究生创新基金（编号18YCX110）