Inhibiting electro-thermal breakdown of acrylic dielectric elastomer actuators by dielectric gel coating

Inhibiting electro-thermal breakdown of acrylic dielectric elastomer actuators by dielectric gel coating

Electrical breakdown of dielectricelastomer actuators (DEA) is very localized; a spark and a pinhole (puncture) in dielectric ends up with short-circuit. This letter shows that prevention of electrothermal breakdown helps defer failure of DEAs even with conductive-grease electrodes.Dielectricgel enc...

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Main Authors: La, Thanh-Giang, Lau, Gih-Keong
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2016
Subjects:
Mechanical and Aerospace Engineering
Online Access:https://hdl.handle.net/10356/82446
http://hdl.handle.net/10220/40017
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-824462023-03-04T17:12:02Z Inhibiting electro-thermal breakdown of acrylic dielectric elastomer actuators by dielectric gel coating La, Thanh-Giang Lau, Gih-Keong School of Mechanical and Aerospace Engineering Mechanical and Aerospace Engineering Electrical breakdown of dielectricelastomer actuators (DEA) is very localized; a spark and a pinhole (puncture) in dielectric ends up with short-circuit. This letter shows that prevention of electrothermal breakdown helps defer failure of DEAs even with conductive-grease electrodes.Dielectricgel encapsulation or coating (Dow Corning 3-4170) helps protect acrylic elastomer (VHB 4905), making it thermally more stable and delaying its thermal oxidation (burn) from 218 °C to 300 °C. Dielectric-gel-coated acrylic DEAs can withstand higher local leak-induced heating and thus achieve higher dielectric strengths than non-coated DEAs do. Published version 2016-02-19T07:35:43Z 2019-12-06T14:55:48Z 2016-02-19T07:35:43Z 2019-12-06T14:55:48Z 2016 Journal Article La, T.-G., & Lau, G.-K. (2016). Inhibiting electro-thermal breakdown of acrylic dielectric elastomer actuators by dielectric gel coating. Applied Physics Letters, 108(1), 012903-. 0003-6951 https://hdl.handle.net/10356/82446 http://hdl.handle.net/10220/40017 10.1063/1.4939550 en Applied Physics Letters © 2016 AIP Publishing LLC. This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of AIP Publishing LLC. The published version is available at: [http://dx.doi.org/10.1063/1.4939550]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 5 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Mechanical and Aerospace Engineering
spellingShingle Mechanical and Aerospace Engineering
La, Thanh-Giang
Lau, Gih-Keong
Inhibiting electro-thermal breakdown of acrylic dielectric elastomer actuators by dielectric gel coating
description Electrical breakdown of dielectricelastomer actuators (DEA) is very localized; a spark and a pinhole (puncture) in dielectric ends up with short-circuit. This letter shows that prevention of electrothermal breakdown helps defer failure of DEAs even with conductive-grease electrodes.Dielectricgel encapsulation or coating (Dow Corning 3-4170) helps protect acrylic elastomer (VHB 4905), making it thermally more stable and delaying its thermal oxidation (burn) from 218 °C to 300 °C. Dielectric-gel-coated acrylic DEAs can withstand higher local leak-induced heating and thus achieve higher dielectric strengths than non-coated DEAs do.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
La, Thanh-Giang
Lau, Gih-Keong
format Article
author La, Thanh-Giang
Lau, Gih-Keong
author_sort La, Thanh-Giang
title Inhibiting electro-thermal breakdown of acrylic dielectric elastomer actuators by dielectric gel coating
title_short Inhibiting electro-thermal breakdown of acrylic dielectric elastomer actuators by dielectric gel coating
title_full Inhibiting electro-thermal breakdown of acrylic dielectric elastomer actuators by dielectric gel coating
title_fullStr Inhibiting electro-thermal breakdown of acrylic dielectric elastomer actuators by dielectric gel coating
title_full_unstemmed Inhibiting electro-thermal breakdown of acrylic dielectric elastomer actuators by dielectric gel coating
title_sort inhibiting electro-thermal breakdown of acrylic dielectric elastomer actuators by dielectric gel coating
publishDate 2016
url https://hdl.handle.net/10356/82446
http://hdl.handle.net/10220/40017
_version_ 1759854197760589824

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