Enhanced breakdown strength and suppressed dielectric loss of polymer nanocomposites with BaTiO<sub>3</sub>fillers modified by fluoropolymer
Jianxin Zhang, Jiachen Ma, Luqing Zhang, Chuanyong Zong, Anhou Xu, Yabin Zhang, Bing Geng, Shuxiang Zhang
Abstract
(BT) nanoparticles by a "thiol-ene" click reaction to reduce the surface energy of BT nanoparticles. A novel nanocomposite consisted of the core-shell structured PDFMA@BT hybrid nanoparticles and poly(vinylidene fluoride-chlorotrifluoroethylene) (P(VDF-CTFE)) matrix was prepared. The influence of the fluoropolymer shell on the dispersion of fillers, the compatibility between the fillers and polymer matrix, dielectric properties and breakdown strength were investigated systematically. The results indicate that the strong interfacial adhesion between the hybrid nanoparticles and P(VDF-CTFE) matrix makes the fillers uniformly dispersed in the polymer matrix. Meanwhile, the excellent compatibility between the two components is favorable for enhancing the breakdown strength and suppressing dielectric loss, providing a condition to prepare dielectric materials with high energy storage density.