Self-Healing, High-Permittivity Silicone Dielectric Elastomer

Frederikke Bahrt Madsen, Liyun Yu, Anne Ladegaard Skov

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Abstract

Currently used dielectric elastomers do not have the ability to self-heal after detrimental events such as tearing or electrical breakdown, which are critical issues in relation to product reliability and lifetime. In this paper, we present a self-healing dielectric elastomer that additionally possesses high dielectric permittivity and consists of an interpenetrating polymer network of silicone elastomer and ionic silicone species that are cross-linked through proton exchange between amines and acids. The ionically cross-linked silicone provides self-healing properties after electrical breakdown or cuts made directly to the material due to the reassembly of the ionic bonds that are broken during damage. The dielectric elastomers presented in this paper pave the way to increased lifetimes and the ability of dielectric elastomers to survive millions of cycles in high-voltage conditions.
Original languageEnglish
JournalACS Macro Letters
Volume5
Pages (from-to)1196–1200
DOIs
Publication statusPublished - 2016

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