Electromechanical instability in silicone- and acrylate-based dielectric elastomers

Liang Jiang; Yanfen Zhou; Shaojuan Chen; Jianwei Ma; Anthony Betts; Stephen Jerrams

doi:10.1002/app.45733

Electromechanical instability in silicone- and acrylate-based dielectric elastomers

Liang Jiang, Yanfen Zhou, Shaojuan Chen, Jianwei Ma, Anthony Betts, Stephen Jerrams

Faculty of Sciences and Health

Research output: Contribution to journal › Article › peer-review

Abstract

Electromechanical instability (EMI) is regarded as a significant factor in preventing dielectric elastomers (DEs) from achieving large voltage-induced deformations. In this study, the strain-stiffening effect was used to control the occurrence of EMI in DEs. The results show that the stretching ratio required to provide a feasible strain-stiffening effect in silicone rubber (SR) was smaller than that needed for a commercial DE material, VHB 4910. The experimental data were compared with currently used models for the simulation of EMI in DEs. We found that EMI could be eliminated in the deformation of these elastomers when prestretching was used. Through the application of a prestretching ratio of above 2.0, EMI was suppressed in both the VHB 4910 and SR samples. The findings of this research are of great significance in the maximization of the electromechanical performance of DE materials.

Original language	English
Article number	45733
Journal	Journal of Applied Polymer Science
Volume	135
Issue number	9
DOIs	https://doi.org/10.1002/app.45733
Publication status	Published - 5 Mar 2018

Keywords

elastomers
mechanical properties
stimuli-sensitive polymers
theory and modeling

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10.1002/app.45733

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title = "Electromechanical instability in silicone- and acrylate-based dielectric elastomers",

abstract = "Electromechanical instability (EMI) is regarded as a significant factor in preventing dielectric elastomers (DEs) from achieving large voltage-induced deformations. In this study, the strain-stiffening effect was used to control the occurrence of EMI in DEs. The results show that the stretching ratio required to provide a feasible strain-stiffening effect in silicone rubber (SR) was smaller than that needed for a commercial DE material, VHB 4910. The experimental data were compared with currently used models for the simulation of EMI in DEs. We found that EMI could be eliminated in the deformation of these elastomers when prestretching was used. Through the application of a prestretching ratio of above 2.0, EMI was suppressed in both the VHB 4910 and SR samples. The findings of this research are of great significance in the maximization of the electromechanical performance of DE materials.",

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AU - Jiang, Liang

AU - Zhou, Yanfen

AU - Chen, Shaojuan

AU - Ma, Jianwei

AU - Betts, Anthony

AU - Jerrams, Stephen

PY - 2018/3/5

Y1 - 2018/3/5

N2 - Electromechanical instability (EMI) is regarded as a significant factor in preventing dielectric elastomers (DEs) from achieving large voltage-induced deformations. In this study, the strain-stiffening effect was used to control the occurrence of EMI in DEs. The results show that the stretching ratio required to provide a feasible strain-stiffening effect in silicone rubber (SR) was smaller than that needed for a commercial DE material, VHB 4910. The experimental data were compared with currently used models for the simulation of EMI in DEs. We found that EMI could be eliminated in the deformation of these elastomers when prestretching was used. Through the application of a prestretching ratio of above 2.0, EMI was suppressed in both the VHB 4910 and SR samples. The findings of this research are of great significance in the maximization of the electromechanical performance of DE materials.

AB - Electromechanical instability (EMI) is regarded as a significant factor in preventing dielectric elastomers (DEs) from achieving large voltage-induced deformations. In this study, the strain-stiffening effect was used to control the occurrence of EMI in DEs. The results show that the stretching ratio required to provide a feasible strain-stiffening effect in silicone rubber (SR) was smaller than that needed for a commercial DE material, VHB 4910. The experimental data were compared with currently used models for the simulation of EMI in DEs. We found that EMI could be eliminated in the deformation of these elastomers when prestretching was used. Through the application of a prestretching ratio of above 2.0, EMI was suppressed in both the VHB 4910 and SR samples. The findings of this research are of great significance in the maximization of the electromechanical performance of DE materials.

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KW - stimuli-sensitive polymers

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Electromechanical instability in silicone- and acrylate-based dielectric elastomers

Abstract

Keywords

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