Volume 112, Number 2, October 2015
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||16 November 2015|
Effect of temperature on the electromechanical actuation of viscoelastic dielectric elastomers
1 State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University Xi'an, 710049, China
2 School of Mechanical Engineering, Xi'an Jiaotong University - Xi'an, 710049, China
3 Institute of Systems Engineering, China Academy of Engineering Physics - Mianyang, 621900, China
Received: 8 June 2015
Accepted: 20 October 2015
The electromechanical deformation of viscoelastic dielectric elastomers (DEs) is primarily governed by three material parameters: permittivity, Young's modulus, and relaxation time. All three parameters are functions of temperature, so a complete description of the electromechanical behaviour of a DE must take thermal effects into account. In this paper, we have established a physical model for viscoelastic DEs that takes temperature effects into consideration. The actuation of a DE was measured under different temperatures to verify the model. A peak actuation stretch was obtained at around 363 K both experimentally and theoretically. Moreover, we also demonstrate the contribution of strain-stiffening induced by greater pre-stretching to the improvement of thermostability.
PACS: 77.84.Jd – Polymers; organic compounds / 77.65.-j – Piezoelectricity and electromechanical effects / 61.41.+e – Polymers, elastomers, and plastics
© EPLA, 2015
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.