Nano-Feb class="a-plus-plus">3b>Ob class="a-plus-plus">4b> deposited CaCub class="a-plus-plus">3b>Tib class="a-plus-plus">4b>Ob class="a-plus-plus">12b>/poly(vinylidene fluoride) composites with enhanced dielectric properties

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• 作者：Changhai Zhang ; Qingguo Chi ; Lizhu Liu…
• 刊名：Journal of Materials Science: Materials in Electronics
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：28
• 期：3
• 页码：2502-2510
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Optical and Electronic Materials; Characterization and Evaluation of Materials;
• 出版者：Springer US
• ISSN：1573-482X
• 卷排序：28

文摘

In this paper, calcium copper tianate (CCTO) ceramics were prepared by a sol–gel technology, then Feb>3b>Ob>4b>-deposited CCTO hybrid particles (CCTO@Feb>3b>Ob>4b>) and corresponding CCTO@Feb>3b>Ob>4b>/poly(vinylidene fluoride) (PVDF) composites were also prepared. Transmission electron microscope image shows that Feb>3b>Ob>4b> nanoparticles with a certain degree of agglomeration deposited on the surface of CCTO powders. The high dielectric permittivity (115.8), low dielectric loss (0.48) and low conductivity (3.47 × 10−7 S/m) at 100 Hz were simultaneously achieved when the content of CCTO@Feb>3b>Ob>4b> was 40 vol%. The electric modulus formalism indicated that the Feb>3b>Ob>4b> nanoparticles could effectively enhance the interfacial polarization of the CCTO@Feb>3b>Ob>4b>/PVDF composites. Moreover, the structure of the CCTO@Feb>3b>Ob>4b> particles effectively suppressed the formation of conducting path in PVDF matrix, resulting in a high dielectric permittivity, a low dielectric loss and a low conductivity of the composite. All the above-mentioned properties are beneficial for the use of these composites in the electronics industry, for applications such as printed circuit boards.