Conductive polymer composites for use as stretchable strain sensors have recently been developed for use in wearable electronic devices capable of detecting various stimuli such as human body motion. In this work, we report the development of a flexible strain sensor based on conductive thermoplastic vulcanizate (TPV) by the incorporation of conductive carbon black (CCB). By adopting special processing conditions, the percolation threshold of the CCB could be minimized to a value as low as ∼4wt% as compared to a value of 10 wt% for conventional TPV. Under static and cyclic loading, the strain sensing behavior of the conductive TPV depended on the morphology and filler content. The result also revealed that interconnected TPV exhibited superior piezoresistive characteristics with good sensitivity. Therefore, the good strain sensing performance of this conductive TPV can be considered as a promising material for use in wearable human-motion and wearable strain sensors.

近年来，已开发出用作可拉伸应变传感器的导电聚合物复合材料，用于可检测各种刺激（例如人体运动）的可穿戴电子设备。在这项工作中，我们报告了通过结合导电炭黑（CCB）开发基于导电热塑性硫化橡胶（TPV）的柔性应变传感器的过程。通过采用特殊的处理条件，与传统的TPV相比，CCB的渗漏阈值可最小化至低至约4wt％的值。在静态和循环载荷下，导电TPV的应变感应行为取决于形态和填料含量。结果还表明，互连的TPV表现出优异的压阻特性和良好的灵敏度。因此，