Effects of metal oxides on the dielectric and mechanical properties of silicone rubber composites

• Published in: Journal of applied polymer science Vol. 141; no. 8
• Main Authors: Huang, Bin, Yu, Yan, Zhao, Yan, Zhao, Yunfeng, Dai, Lina, Zhang, Zhijie, Fei, Hua‐Feng
• Format: Journal Article
• Language: English
• Published: Hoboken, USA John Wiley & Sons, Inc 20-02-2024; Wiley Subscription Services, Inc
• Subjects: Actuators; Composite materials; dielectric elastomers; Dielectric properties; Elastomers; electrical breakdown strength; Elongation; Mechanical properties; metal oxide; Metal oxides; Permittivity; Polysiloxanes; Silicone rubber
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/app.54983

Polysiloxane dielectric elastomers have garnered a considerable deal of attention over the last decade due to their potential as electroactive soft materials. However, the intrinsic low dielectric constant of polysiloxanes has proven a serious limitation in their practical use. In this work, we controlled the dielectric properties of silicone rubber composites by changing the type and content of oxide fillers. The silicone‐based dielectric elastomers with a high dielectric constant (5.21@1 kHz), low modulus (1.62 MPa), and high elongation (1100%) were successfully obtained. The effects of different types of metal oxides on the dielectric properties and mechanical properties of the prepared composites are further explored. Due to their excellent comprehensive features, these types of materials are expected to be applied in capacitive sensors, actuators, generators, and beyond.
Dielectric performance of silicone rubber enhanced by metal oxides.