期刊
POLYMER
卷 171, 期 -, 页码 173-179出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2019.03.028
关键词
Dielectric elastomer; Energy harvesting; Mechanochemistry
资金
- Brazilian agency MCTIC/CNPq [465452/2014-0]
- Brazilian agency FAPESP through INCT/INOMAT (National Institute for Complex Functional Materials) [2014/50906-9]
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior -Brasil (CAPES) [001]
- FAPESP [2016/02386-1]
- CAPES [88887.284776/2018-00]
This work reports the rubber electrostatic potential due to repeated strain as a function of time for periods as long as the lifetime of the sample. Rubber potential depends on two main contributions: hygroelectricity added to the mechanochemical reactions evidenced by spectroscopy and microscopy/microanalytical experiments. Hygroelectricity produces fast periodic charging in phase with rubber strain, while a slower charging process is assigned to the mechanochemical reaction products, in conjunction with residual hygroelectricity. This result explains the significant negative potential displayed by rubber over long periods in the absence of any external applied voltage. These findings may contribute to improving dielectric elastomer performance in many applications that are currently of great interest in robotics and energy harvesting. Additionally, electric potential real-time measurements show desirable features as a tool for real-time, non-contact detection of rubber structural change and fatigue.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据