标度系数
材料科学
复合数
聚二甲基硅氧烷
复合材料
碳纳米管
应变计
极限抗拉强度
弹性体
炭黑
导电体
压阻效应
拉伤
可穿戴计算机
纳米技术
制作
计算机科学
天然橡胶
医学
替代医学
病理
内科学
嵌入式系统
作者
Sishi Li,Rong Xu,Jiashu Wang,Yanpeng Yang,Qiang Fu,Chunxu Pan
标识
DOI:10.1016/j.jcis.2022.03.020
摘要
With continuous development of artificial intelligence technology, strain sensors have attracted widespread attention. In this work, a novel high-performance wearable strain sensor is prepared by using a kind of ultra-stretchable, super-hydrophobic and high-conductive composite. The preparation process is as follows, i.e., using common elastic band (EB) as the polymer matrix, nano carbon black (CB) and carbon nanotubes (CNTs) as mixed conductive filler, and then modified by polydimethylsiloxane (PDMS) to obtain the PDMS/(CB + CNTs)/EB composite for assembling assemble flexible wearable strain sensors. Experimental results reveal the following excellent properties: 1) The composite exhibits excellent mechanical properties and super-hydrophobicity, i.e., the tensile strength is up to 996.5%, and the elastic modulus and tensile strength increase 49.2% and 59.2%, compared with pristine EB; 2) The composite strain sensor exhibits high sensitivity (the gauge factor reaches up to 648.83 under strain range of 979.9-996.5%), and it still shows stable performance after 3000 cycles tests (100% strain); 3) It is a well candidate to be used for monitoring human body motions including large and subtle body movements; 4) The composite sensor also has advantages of easy access of raw materials, simple preparation, easy mass production and relatively low production cost, showing a broad application prospect in wearable electronic products.
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