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Proceedings Paper

Effect of temperature on the electric breakdown strength of dielectric elastomer
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Paper Abstract

DE (dielectric elastomer) is one of the most promising artificial muscle materials for its large strain over 100% under driving voltage. However, to date, dielectric elastomer actuators (DEAs) are prone to failure due to the temperature-dependent electric breakdown. Previously studies had shown that the electrical breakdown strength was mainly related to the temperature-dependent elasticity modulus and the permittivity of dielectric substances. This paper investigated the influence of ambient temperature on the electric breakdown strength of DE membranes (VHB4910 3M). The electric breakdown experiment of the DE membrane was conducted at different ambient temperatures and pre-stretch levels. The real breakdown strength was obtained by measuring the deformation and the breakdown voltage simultaneously. Then, we found that with the increase of the environment temperature, the electric breakdown strength decreased obviously. Contrarily, the high pre-stretch level led to the large electric breakdown strength. What is more, we found that the deformations of DEs were strongly dependent on the ambient temperature.

Paper Details

Date Published: 8 March 2014
PDF: 9 pages
Proc. SPIE 9056, Electroactive Polymer Actuators and Devices (EAPAD) 2014, 905634 (8 March 2014); doi: 10.1117/12.2044910
Show Author Affiliations
Lei Liu, Xi'an Jiaotong Univ. (China)
Hualing Chen, Xi'an Jiaotong Univ. (China)
Junjie Sheng, Xi'an Jiaotong Univ. (China)
Junshi Zhang, Xi'an Jiaotong Univ. (China)
Yongquan Wang, Xi'an Jiaotong Univ. (China)
Shuhai Jia, Xi'an Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 9056:
Electroactive Polymer Actuators and Devices (EAPAD) 2014
Yoseph Bar-Cohen, Editor(s)

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