High breakdown-strength composites from liquid silicone rubbers

Sindhu Vudayagiri, Shamsul Bin Zakaria, Liyun Yu, Suzan Sager Hassouneh, Mohamed Benslimane, Anne Ladegaard Skov

Research output: Contribution to journalJournal articleResearchpeer-review


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 μm−1 is obtained.
Original languageEnglish
Article number105017
JournalSmart Materials and Structures
Issue number10
Number of pages16
Publication statusPublished - 2014


  • Dielectric-electroactive polymers
  • Liquid silicone rubbers
  • Dielectric breakdown
  • Dielectric permittivity
  • Figure of merit


Dive into the research topics of 'High breakdown-strength composites from liquid silicone rubbers'. Together they form a unique fingerprint.

Cite this