Zeng Wangyi, Deng Longjiang, Yang Guang
School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China.
National Engineering Research Centre of, Electromagnetic Radiation Control Materials, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China.
Chemistry. 2023 Apr 13;29(21):e202203478. doi: 10.1002/chem.202203478. Epub 2023 Mar 9.
Self-healable and stretchable elastomeric material is essential for the development of flexible electronics devices to ensure their stable performance. In this study, a strain sensor (PIH T -tri/CNT-3) composed of self-repairable crosslinked elastomer substrate (PIH T -tri, containing multiple reversible repairing sites such as disulfide, imine, and hydrogen bonds) and conductive layer (carbon nanotube, CNT) was prepared. The PIH T -tri elastomer had excellent self-healing ability (healing efficiency=91 %). It exhibited good mechanical integrity in terms of elongation at break (672 %), tensile strength (1.41 MPa). The Young's modulus (0.39 MPa) was close to that of human skin. The PIH T -tri/CNT-3 sensor also demonstrated an effective self-healing function for electrical conduction and sensing property. Meanwhile, it had high sensitivity (gauge factor (GF)=24.1), short response time (120 ms), and long-term durability (4000 cycles). This study offers a novel self-healable elastomer platform with carbon based conductive components to develop flexible strain sensors towards high performance soft electronics.
自修复和可拉伸的弹性体材料对于柔性电子设备的发展至关重要，以确保其稳定的性能。在本研究中，制备了一种由可自修复交联弹性体基底（PIH T -tri，含有二硫键、亚胺和氢键等多个可逆修复位点）和导电层（碳纳米管，CNT）组成的应变传感器（PIH T -tri/CNT-3）。PIH T -tri弹性体具有优异的自修复能力（修复效率=91%）。它在断裂伸长率（672%）、拉伸强度（1.41 MPa）方面表现出良好的机械完整性。杨氏模量（0.39 MPa）接近人体皮肤。PIH T -tri/CNT-3传感器在导电和传感性能方面也表现出有效的自修复功能。同时，它具有高灵敏度（应变片系数（GF）=24.1）、短响应时间（120 ms）和长期耐久性（4000次循环）。本研究提供了一种具有碳基导电组件的新型自修复弹性体平台，以开发用于高性能软电子的柔性应变传感器。
