SnO_(2)/MWCNTs/PVP电阻式柔性湿度传感器的制备及其性能研究  

SnO_(2)/MWCNTs/PVP Resistance Flexible Humidity Sensor Study on Preparation and Properties

作　　者：高兴 代阳 马训鸣[1] 姚广春 GAO Xing;DAI Yang;MA Xunming;YAO Guangchuan(School of Mechanical and Electrical Engineering,Xi’an Polytechnic University,Xi’an Shaanxi 710048,China)

机构地区：[1]西安工程大学机电工程学院,陕西西安710048

出　　处：《传感技术学报》2023年第5期706-710,共5页Chinese Journal of Sensors and Actuators

基　　金：陕西省教育厅专项科研计划项目(22JK0404);西安工程大学博士启动基金项目(BS201803);中国博士后科学基金(2020M683682XB);陕西省高速公路施工机械重点实验室(300102251506)。

摘　　要：柔性湿度传感器在可穿戴式健康监测中发挥重要作用,合理选择柔性传感器的材料和工艺是制备柔性传感器的关键。为实现柔性基底的高性能湿度传感器,通过静电纺丝工艺在带有柔性电极的聚对苯二甲酸乙二醇酯(PET)的衬底上制备出SnO_(2)(二氧化锡)/CNT(MWCNTs多壁碳纳米管)/PVP(聚乙烯吡咯烷酮)湿度传感器和CNT/PVP湿度传感器。通过自主设计湿度生成和测试装置,对两种传感器的灵敏度、响应时间等参数进行测试。实验结果表明,两种湿度传感器输出阻值与相对湿度之间呈线性关系,SnO_(2)/CNT/PVP传感器的灵敏度是CNT/PVP传感器的3.3倍,说明掺杂SnO_(2)能显著提高SnO_(2)/CNT/PVP湿度传感器的灵敏度特性。Flexible humidity sensor plays an important role in wearable health monitoring.The key to the flexible preparation of the sensor is to reasonably select the material and process.In order to realize high-performance humidity sensor with flexible substrate,SnO_(2)(tin oxide)/CNT(Multi-wall Carbon Nanotube)/PVP(Polyvinylpyrrolidone)humidity sensor and CNT/PVP humidity sensor are prepared on polyethylene terephthalate(PET)substrate with flexible electrode through electrospinning process.The sensitivity,response time and other parameters of the two sensors are tested through the self-designed humidity generation and testing device.The experimental results show that there is a linear relationship between the output resistance of the two humidity sensors and the relative humidity.The sensitivity of SnO_(2)/CNT/PVP sensor is 3.3 times that of CNT/PVP sensor,indicating that doping SnO_(2)can significantly improve the sensitivity of SnO_(2)/CNT/PVP humidity sensor.

关 键 词：柔性湿度传感器 静电纺丝 碳纳米管 二氧化锡 柔性衬底 

分 类 号：TB32[一般工业技术—材料科学与工程] TS101[轻工技术与工程—纺织工程] TP212.1[轻工技术与工程—纺织科学与工程]