柔性棉织物压力传感器的制备及性能研究  

Preparation and property study of soft cotton fabric pressure sensor

作　　者：李泰泉 张宇[1] 秦亚飞 金皓 LI Taiquan;ZHANG Yu;QIN Yafei;JIN Hao(Kunming University of Science and Technology,Kunming,650000,China)

机构地区：[1]昆明理工大学,云南昆明650000

出　　处：《棉纺织技术》2024年第9期41-46,共6页Cotton Textile Technology

基　　金：国家自然科学基金(52165066);云南省基础研究面上项目(202101AT070106)。

摘　　要：为了探究柔性传感器在使用时的灵敏度和可靠性,选用液态金属镓铟合金作为导电敏感材料,利用丝网印刷工艺在棉织物上印刷液态金属叉指电极,并将其作为底电极;采用超声法制作液态金属锦纶电极,并将其作为压阻层。将压阻层与底电极上下组装成压阻式柔性棉织物压力传感器,并测试其相关性能。结果表明:当施加不同的外力时,柔性压力传感器的电阻随着外力的增加而线性减小;在0 kPa~2 kPa的压力测试范围内,传感器的灵敏度可达到0.397 kPa^(-1);传感器的加载响应时间为0.135 s,卸载响应时间为0.140 s,对外力的变化具有较好的响应性能和稳定性;制备的柔性棉织物压力传感器在人体手腕弯曲检测中,电阻变化率的循环曲线保持一致,传感器在相同角度的反复弯曲运动中提供了稳定的输出。In order to explore the sensitivity and reliability of soft sensors during use,liquid metal galliumindium alloy was selected as conductive sensitive materials.Liquid metal interdigital electrodes was printed on cotton fabrics with screen printing process,then it was used as the bottom electrode.Ultrasonic method was adopted to create liquid metal nylon electrodes,which were used as the resistive layer.The resistive layer and bottom electrode were assembled into a resistive soft cotton fabric pressure sensor,and its relevant performance was tested.The results showed that,when different external forces were applied,the resistance of the soft pressure sensor was linearly decreased with the increase of external force.The sensitivity of the sensor could be reached 0.397 kPa^(-1) within the pressure test range of 0 kPa~2 kPa.The loading response time of the sensor was 0.135 s,and the unloading response time was 0.140 s,which indicated its better response performance and stability to changes in external forces.Additionally,in the wrist bending detection of the prepared soft cotton fabric pressure sensor,the cyclic curve of the resistance change rate was kept consistently.Stable output was provided during the alternating bending test of the sensor in same angles.

关 键 词：压力传感器 丝网印刷 液态金属导电油墨 棉织物 叉指电极 灵敏度 

分 类 号：TS106[轻工技术与工程—纺织工程]