Shamsul, Zakaria and Yu, Liyun and Kofod, Guggi and Skov, Anne Ladegaard (2015) The Influence of Static Pre-stretching on the Mechanical Ageing of Filled Silicone Rubbers for Dielectric Elastomer Applications. Materials Today Communications, 4 (Sept.). 204 - 213. ISSN 2352-4928. (Published)
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Abstract
Abstract Dielectric elastomer (DE) pre-stretching is a key aspect of attaining better actuation performance, as it helps prevent electromechanical instability (EMI) and usually lowers the Young's modulus, thus leading to easier deformation. The pre-stretched {DE} is not only susceptible to a high risk of tearing and the formation of mechanical defects, but films with sustained and substantial strain may also experience mechanical degradation. In this study a long-term mechanical reliability study of {DE} is performed. Young's moduli, dielectric breakdown strengths and dielectric permittivities of commercial silica-reinforced silicone elastomers, with and without an additional 35 (35 phr) of titanium dioxide (TiO2), were investigated after being subjected to pre-stretching for various timespans at pre-stretches to strains of 60 and 120, respectively. The study shows that mechanical stability when pre-stretching is difficult to achieve with highly filled elastomers. However, despite the negative outlook for metal oxide-filled silicone elastomers, the study paves the way for reliable dielectric elastomers by indicating that simply post-curing silicone elastomers before use may increase reliability.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Dielectric elastomer |
| Subjects: | Q Science > QD Chemistry |
| Faculty/Division: | Faculty of Industrial Sciences And Technology |
| Depositing User: | Mr. Shamsul Zakaria |
| Date Deposited: | 31 Mar 2016 08:33 |
| Last Modified: | 25 Jul 2018 08:18 |
| URI: | http://umpir.ump.edu.my/id/eprint/12476 |
| Download Statistic: | View Download Statistics |
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