Graphene nanoplatelets/barium titanate hybrid nanoparticles via ball milling for enhanced dielectric and mechanical properties of fluorosilicone rubber composites. Issue 6 (15th March 2023)

• Record Type: Journal Article
• Authors: Tan, Changbin; Zhou, You; Li, Jiahui; Zhou, Haoyue; Xiao, Qianxi; Yang, Xin; He, Shan; Li, Gen; Yang, Yan
• Is Part Of: Ceramics international. Volume 49:Issue 6(2023)
• Page Start: 9017
• Page End: 9025
• Publication Date: 2023-03-15
• Subjects: Graphene nanoplatelets -- Barium titanate -- Fluorosilicone rubber -- Ball milling; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.11.057
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Dielectric elastomers have been widely used in flexible actuators, artificial muscles, soft generators, etc. However, there are still challenges in fabrication of dielectric elastomers with enhanced dielectric and mechanical properties through simple and environmentally friendly compound method. In this paper, graphene nanoplatelets (GNPs) and BaTiO3 (BT) hybrid nanofillers are prepared by co-ball milling and then introduced into fluorosilicone rubber (FSR) to obtain composites with improved dielectric and mechanical properties. The X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy and transmission electron microscope results confirm the successfully exfoliation of GNP. With the increase of GNP content, the tensile strength and dielectric constant of FSR/GNP/BT nanocomposites both increase without the sacrifice of flexibility, while the dielectric loss tangent can be kept as low as 10 −2 magnitude. The FSR-G7B30-BM composite exhibits a dielectric constant of 14.54 at 100 Hz, and the dielectric loss tangent of 0.016 at 100 Hz. Besides, the FSR-G7B30-BM composite displays the tensile strength of 1.19 MPa, and elongation at break of 332.12%. This work provides a facile strategy to design dielectric elastomers, which shows promising applications in modern electronic devices. Graphical abstract: Image 1 Highlights: The ball milling of BT could generate temporary potentials, which is beneficial for the activation and exfoliation of GNPs. The incorporation of the prepared GNP/BT hybrids into the FSR matrix concurrently improved the dielectric and mechanical properties of the composites. This study provides a simple strategy to not only exfoliate layered materials but also design dielectric elastomers applied in electric devices.