采用石墨烯片（GnPs）和多壁碳纳米管（MWCNTs）制备了高灵敏度和线性应变传感器。通过优化超声时间和球磨混合过程获得GnPs / MWCNTs混合物的最佳分散比（30％GnPs）。然后将混合物喷涂到通过特定条件处理的PU膜上作为应变传感器。单调拉伸结果表明，与纯MWCNTs传感器相比，具有30％GnPs的传感器表现出相对高的传感范围（0-7.5％），传感系数（181.36）和99.545％的线性度。升/降温（0-200℃）实验结果表明传感器升温过程中电阻温度系数为-6.103%/℃,降温过程中电阻温度系数为-5.993%/℃，传感器具有较好的温敏特性和可逆性。

In this paper, the high sensitivity and linear strain sensor is fabricated on the graphene platelets (GnPs) and multi-walled carbon nanotube (MWCNTs). The best dispersion ratio of the GnPs/MWCNTs mixture (30wt% GnPs loading) is obtained by optimizing ultrasonic time and the ball mill mixing process. And then the mixture is sprayed onto the PU films processed by specific condition as a strain sensor. The monotonic tensile results suggest that the GM sensor with 30wt% GnPs exhibits relatively sensing range of 7.5%, gauge factor (GF) of 181.36, and linearity of 99.545% compared with the pure MWCNTs sensor. The experiments of temperature(0-200℃rise and fall)show that the sensor has good temperature sensitivity(-6.103%/℃ for heating process, -5.993%/℃ for cooling process) and reversibility.