High breakdown-strength composites from liquid silicone rubbers

In this paper we investigate the performance of liquid silicone rubbers (LSRs) as dielectric elastomer transducers. Commonly used silicones in this application include room-temperature vulcanisable (RTV) silicone elastomers and composites thereof. Pure LSRs and their composites with commercially ava...

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Bibliographic Details
Published in:Smart materials and structures 2014-10, Vol.23 (10), p.105017-15
Main Authors: Vudayagiri, Sindhu, Zakaria, Shamsul, Yu, Liyun, Hassouneh, Suzan Sager, Benslimane, Mohamed, Skov, Anne Ladegaard
Format: Article
Language:English
Subjects:
Anatase
COMPOSITES
dielectric breakdown
dielectric permittivity
Dielectric strength
dielectric-electroactive polymers
Elastomers
Exact sciences and technology
figure of merit
Fillers
General equipment and techniques
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
liquid silicone rubbers
Liquids
NATURAL RUBBERS
PERMITTIVITY
Physics
Silicones
TITANIUM DIOXIDE
Transducers
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Summary:In this paper we investigate the performance of liquid silicone rubbers (LSRs) as dielectric elastomer transducers. Commonly used silicones in this application include room-temperature vulcanisable (RTV) silicone elastomers and composites thereof. Pure LSRs and their composites with commercially available fillers (an anatase TiO2, a core-shell TiO2-SiO2 and a CaCu3Ti4O12 filler) are evaluated with respect to dielectric permittivity, elasticity (Young's modulus) and electrical breakdown strength. Film formation properties are also evaluated. The best-performing formulations are those with anatase TiO2 nanoparticles, where the highest relative dielectric permittivity of 5.6 is obtained, and with STX801, a core-shell morphology TiO2-SiO2 filler from Evonik, where the highest breakdown strength of 173 V m−1 is obtained.
ISSN:0964-1726
1361-665X
DOI:10.1088/0964-1726/23/10/105017