基于多孔复合结构的抗冲击传感器研究  

Research on impact resistance sensor based on porous composite structure

作　　者：张洪磊 陈爽 李靖 钟飞[1] ZHANG Honglei;CHEN Shuang;LI Jing;ZHONG Fei(School of Mechanical Engineering,Hubei University of Technology,Wuhan 430000,China)

机构地区：[1]湖北工业大学机械工程学院,湖北武汉430000

出　　处：《传感器与微系统》2023年第8期26-29,共4页Transducer and Microsystem Technologies

基　　金：湖北省科技厅科研项目(00120)。

摘　　要：传统柔性力学传感器抗冲击性能较差,内部结构容易损坏,本文基于多孔复合结构,提出了一种以聚二甲基硅氧烷(PDMS)为柔性基底,掺杂多壁碳纳米管(MWCNTs)的抗冲击柔性压阻式传感器的制作方法。力学测试该传感器最高达到794 kPa的弹性模量与50 kJ/m^(3)的吸能值;电学测试压力传感范围为0.2 Pa~60 kPa,在2 kPa应力范围内灵敏度达到26.1 kPa^(-1)。进一步地,在人体手腕弯曲实验中,能明显检测出手腕弯曲程度。实验结果表明:该传感器具有优异的传感性能与吸能特性,在可穿戴电子皮肤领域具有广阔前景。The traditional flexible mechanical sensor has poor impact resistance performance and its internal structure is easy to be damaged.Based on the porous composite structure,a fabrication method of impact resistance flexible piezoresistive sensor with polydimethylsiloxane(PDMS)as the flexible base and multi-walled carbon nanotubes(MWCNTs)doped is proposed.The maximum elastic modulus of 794kPa and energy absorption value of 50 kJ/m^(3) are achieved in the mechanical tests.Electrical test has a pressure sensing range of 0.2 Pa~60 kPa,with high sensitivity of 26.1 kPa^(-1) over a stress range of 2 kPa^(-1).Furthermore,in the human wrist bending experiment,the sensor can obviously detect the degree of wrist bending.The experimental results show that the sensor has excellent sensing performance and energy absorption characteristics,and has broad prospects in the field of wearable electronic skin.

关 键 词：柔性压阻传感器 多孔复合结构 吸能特性 高灵敏度 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]