Abstract
Dielectric elastomers (DEs) can undergo very large spatial deformations in response to an externally applied electrical field, giving them significant potential as soft actuators. High-performance DEs are usually modified by high-permittivity additives, which are used to lower driving voltages. In this study, a novel high-permittivity soft additive (LMS-EIL) was developed via the combination of high-permittivity ionic liquid (IL) and chloropropyl-silicone, enabling good compatibility with the silicone matrix. The relative dielectric permittivity of the novel silicone oil additive was 9×104 times higher at 0.1Hz compared to pristine chloropropyl-silicone oil. High-permittivity silicone elastomers were then achieved via incorporation of this novel IL-grafted chloropropyl-silicone oil. The relative dielectric permittivity of elastomers modified with 10 parts per hundred rubber (phr) LMS-EIL increased from 3.0 (pure film) to 22 at 0.1Hz, while the Young’s modulus decreased steadily with increasing LMS-EIL concentration. A simplified figure of merit (Fom') was used to evaluate actuation performance, and was shown to be 8.1 for the elastomer incorporated with 10 phr LMS-EIL, indicating excellent potential for use as an actuator.
Original language | English |
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Title of host publication | Electroactive Polymer Actuators and Devices (EAPAD) XXIII |
Editors | Iain A. Anderson, Herbert R. Shea, John D. W. Madden |
Number of pages | 10 |
Volume | 11587 |
Publisher | SPIE - International Society for Optical Engineering |
Publication date | 2021 |
Article number | 1158714 |
DOIs | |
Publication status | Published - 2021 |
Event | SPIE Smart Structures + Nondestructive Evaluation 2021 - Online Duration: 22 Mar 2021 → 27 Mar 2021 https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11587/2581427/High-permittivity-silicone-dielectric-elastomers-compatible-with-ionic-liquid-grafted/10.1117/12.2581427.full |
Conference
Conference | SPIE Smart Structures + Nondestructive Evaluation 2021 |
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Location | Online |
Period | 22/03/2021 → 27/03/2021 |
Internet address |
Keywords
- Dielectric elastomer
- Ionic liquids
- High-permittivity
- Grafting
- Chloropropyl-silicone