棉织物/PVA/CNTs复合柔性压阻式压力传感器的制备与性能研究  

Preparation and Properties Study of Cotton Fabric/PVA/CNTs Composite Flexible Piezoresistive Pressure Sensor

作　　者：曹少杰 杨奥林 肖学良 CAO Shaojie;YANG Aolin;XIAO Xueliang(School of Textile Engineering and Science,Jiangnan University,Wuxi Jiangsu 214122,China)

机构地区：[1]江南大学纺织科学与工程学院,江苏无锡214122

出　　处：《传感技术学报》2021年第6期728-732,共5页Chinese Journal of Sensors and Actuators

基　　金：江南大学国家级大学生创新训练计划项目(202010295054,202010295031Z)。

摘　　要：以弹性棉织物、聚乙烯醇和碳纳米管为原料,采用浸泡烘干法,以聚酰亚胺薄膜为保护层,制备了一款叉指型柔性压阻传感器.研究了传感器的表面形貌、灵敏度、迟滞性和重复性,并探讨了基于柔性压阻传感器的应用.结果表明:传感器具有较宽的压力适用范围(0~200 kPa),并且随着CNTs浓度的增加传感器的灵敏度和灵敏度最大时的压强范围增加;CNTs浓度为1.0%时,传感器的迟滞性误差为22.1%,重复性误差为37.8%,其循环性能以及输出电阻和输入压力之间的同步性能有待提高.基于良好的传感性能和稳定结构,验证了人体生理信号监测,例如人体手指按压、关节弯曲运动和呼吸时腹部收缩运动,表明开发的压力传感器在智能服装、智能机器人和智能医疗等方面具有良好的应用前景.Using elastic cotton fabric,polyvinyl alcohol and carbon nanotubes as raw materials,using the immersion drying method and PI film as the protective layer,an interdigital flexible piezoresistive sensor was prepared,and the surface morphology,sensitivity,and hysteresis of the sensor were studied.Performance and repeatability,and discussed the application of flexible piezoresistive sensors.The results show that the sensor has a wide pressure application range(0~200 kPa),and the sensitivity of the sensor and the pressure range at the maximum sensitivity increase with the increase of the carbon nanotube concentration.When the CNTs concentration is 1.0%,the hysteresis error of the sensor is 22.1%,and the repeatability error is 37.8%.Its cycle performance and synchronization performance between output resistance and input pressure need to be improved.Thanks to the excellent sensing performance and stable structure,some demonstrations have been carried out to obtain human physiological signals,such as human finger pressing,joint bending motion and abdominal contraction motion during breathing,indicating that the developed pressure sensor has good application value in smart clothing,smart robots and smart medical care.

关 键 词：压力传感器 智能服装 棉织物 聚乙烯醇 碳纳米管 

分 类 号：TS184.1[轻工技术与工程—纺织材料与纺织品设计]