Super-stretchable silicone elastomer applied in low voltage actuators

Pengpeng Hu, Jeppe Madsen, Anne Ladegaard Skov*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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Abstract

Enabling desirable actuations at low voltages for silicone based dielectric elastomer actuators (DEAs) is challenging. Reducing the thickness and increasing the softness of the silicone film are key approaches for this purpose. In this work, a super-stretchable silicone elastomer was characterized and used as DEA. The prepared elastomer can be stretched uniaxially to 2400% strain, allowing a significant thickness reduction through pre-stretches. Besides, it shows a moderate average elastic modulus of 0.32 MPa even at strains of 1000%-1500%. These properties favor its application in DEAs. Actuation results show that the elastomer was not only actuated to a high strain but also actuated at attractive voltages. Specifically, a 1 mm-thick elastomer with a pre-strain of 200%×200% was actuated 45% in area at 4 kV, and a 0.25 mmthick elastomer film with pre-strain of 600%×600% showed a 3% actuation strain at only 120 V. Considering its easy fabrication and excellent actuation performance at low voltages, the elastomer is promising in the application in DEAs.
Original languageEnglish
Title of host publicationElectroactive Polymer Actuators and Devices (EAPAD) XXIII
EditorsIain A. Anderson, Herbert R. Shea, John D. W. Madden
Number of pages10
Volume11587
PublisherSPIE - International Society for Optical Engineering
Publication date2021
Article number1158715
DOIs
Publication statusPublished - 2021
EventSPIE Smart Structures + Nondestructive Evaluation - Online event
Duration: 22 Mar 202127 Mar 2021

Conference

ConferenceSPIE Smart Structures + Nondestructive Evaluation
LocationOnline event
Period22/03/202127/03/2021

Keywords

  • Super-stretchable silicone elastomer
  • High stretchability
  • Dielectric elastomer actuator

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