基于炭黑-钛酸钡/聚氨酯的柔性电容式压力传感器  

Flexible capacitive pressure sensor based on carbon black-barium titanate/polyurethane

作　　者：陈续峰 张宇[1] 秦亚飞 王梦妍 隋志源 CHEN Xufeng;ZHANG Yu;QIN Yafei;WANG Mengyan;SUI Zhiyuan(Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学机电工程学院,昆明650500

出　　处：《复合材料学报》2024年第11期6055-6064,共10页Acta Materiae Compositae Sinica

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：随着智能可穿戴柔性电子技术在生物医疗、电子皮肤、人机交互等领域的快速发展和应用,兼具高灵敏度和宽检测范围的柔性压力传感器的研究需求被提上日程。本文采用聚氨酯海绵(PU)作为基底,通过超声浸渍涂覆的方法将炭黑-钛酸钡(CB-BTO)复合材料结合在聚氨酯海绵上,制备出了CB-BTO/PU海绵柔性电容式压力传感器。经测试,传感器兼具了高灵敏度(~0.7911 kPa^(−1))和宽的检测范围(0~300 kPa)等特性。同时,对传感器的响应时间、最低检测限及稳定性等进行研究。此外,还对传感器进行了4个不同压力量程范围的应用测试,验证了传感器在高灵敏度和宽检测范围的应用潜力,为低成本、大规模制备高性能柔性传感器提供了新的可能性方案。With the rapid development and application of smart wearable flexible electronic technology in biomedicine,electronic skin,human-computer interaction and other fields,the research demand of flexible pressure sensors with high sensitivity and wide detection range has been put on the agenda.In this paper,a carbon blackbarium titanate(CB-BTO)/PU flexible capacitive pressure sensor was prepared by using the polyurethane sponge(PU)as the base and combining CB-BTO/BTO composite material on the polyurethane sponge by ultrasonic dipping coating.After testing,the sensor combines high sensitivity(~0.7911 kPa^(−1))and wide detection range(0-300 kPa).At the same time,the response time,the minimum detection limit and the stability of the sensor are studied.In addition,the sensor has been tested in four different pressure ranges,which verifies the potential of the sensor in high sensitivity and wide detection range,and provides a new possibility for low-cost and large-scale fabrication of high-performance flexible sensors.

关 键 词：柔性 电容式压力传感器 模板组装法 高灵敏度 宽检测范围 

分 类 号：TB332[一般工业技术—材料科学与工程]