Enhanced dielectric properties of polymer matrix composites with BaTiO₃ and MWCNT hybrid fillers using simple phase separation

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• 作者：Youngho JinAuthor Vitae ; Ning XiaAuthor Vitae ; Rosario A. Gerhardt ; ^{rosario.gerhardt@mse.gatech.edu}Author Vitae
• 关键词：Polymer matrix composites (PMCs) ; Dielectric nanocomposite ; Carbon nanotubes ; Perovskite ; Impedance spectroscopy
• 刊名：Nano Energy
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：30
• 期：Complete
• 页码：407-416
• 全文大小：1719 K
• 卷排序：30

文摘

Flexible polymer hybrid nanocomposites were fabricated by a simple phase separation method. Barium titanate (BT NPs) and carbon nanotubes (MWCNTs) were dispersed homogeneously in the PVDF polymer matrix. A high real permittivity (71.7) and a low dielectric loss (0.045) were achieved with 37.1 vol % BT NPs and 3 vol % MWCNT. The breakdown strength was improved by annealing heat treatments. An equivalent circuit model was proposed to account for the different components in the nanocomposite. Finite element simulations were conducted for quantitative analysis and improved predictability of the properties.