纤维素基碳材料应变传感器的制备及性能  

Preparation and Properties of Strain Sensor Based on Cellulose Carbon Material

作　　者：刘亮 李思雨 赵春霞[1] 向东 李云涛[1,2] 李辉[1] LIU Liang;LI Siyu;ZHAO Chunxia;XIANG Dong;LI Yuntao;LI Hui(School of New Energy and Materials,Southwest Petroleum University,Chengdu 610500,China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学新能源与材料学院,成都610500 [2]西南石油大学油气藏地质开发国家重点实验室,成都610500

出　　处：《材料导报》2024年第13期247-252,共6页Materials Reports

基　　金：四川省应用基础研究项目(2017JY0152)。

摘　　要：柔性应变传感器作为未来可穿戴传感设备和人机交互系统的重要组成部分,其成本控制、简易制备流程以及穿戴舒适性已成为该领域的重要关注点。以生物质α-纤维素(CA)为原料,通过简单的碳化过程将其转化为具有良好导电性的材料CAC。利用聚二甲基硅氧烷(PDMS)将其封装成柔性应变传感器,探讨分析了该传感器的应变传感行为、可重复性以及穿戴舒适性,并将其应用于人体运动监测。测试结果表明:该传感器具有0.05%~20%的应变传感范围,最高灵敏度可达3.38,在1000次循环后仍具有稳定的信号输出,并且能够监测人体的肢体运动以及细小的生理运动。除此之外,该传感器所表现出的良好透气性对提升可穿戴设备的舒适性具有重要意义。As an important part of future wearable sensing devices and human-computer interaction systems,flexible strain sensors have become an important concern in this field for their cost control,simple fabrication process and wearable comfort.In this work,biomassα-cellulose(CA)was used as raw material and converted into a material with good conductivity(CAC)by a simple carbonization process.The flexible strain sensor was packaged with polydimethylsiloxane(PDMS),the strain sensing behavior,repeatability and wearable comfort of the sensor were discussed and analyzed,and the sensor was applied to human motion monitoring.The test results showed that the sensor had a strain sensing range of 0.05%—20%,and the highest sensitivity can reach 3.38.It still had a stable signal output after 1000 cycles,and can monitor human limb movements and small physiological movements.In addition,the good air permeability shown by the sensor was of great significance for improving the comfort of wearable devices.

关 键 词：应变传感器 聚二甲基硅氧烷 Α-纤维素 碳化 运动监测 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]