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Dielectric properties of modified BNT/PTFE composites for microwave RF antenna applications

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Abstract

BNT/PTFE composites with high dielectric constant and low loss properties were prepared via powder processing technique. The structure, morphology, dielectric and thermal properties of the composites were characterized by X-ray diffraction, scanning electron microscope, coefficient of thermal expansion, and Network Analyzer. BNT/PTFE composites with 70 wt% BNT are of high ε r and high Q: ε r  = 10.56, Q × f = 2872 GHz. Additionally, theoretical models like Logarithmic rule, Maxwell–Garnet, Effective medium theory and Smith’s model were also used to predict the dielectric constant of these composites. The values obtained by the Logarithmic model are in well agreement with the experimental values.

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Acknowledgments

This work was supported by Science and Technology Projects of Guangdong Province (Project No. 2011A091103002), College Industrialization Project of Jiangsu Province (JHB2012-12) and the Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions.

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Authors and Affiliations

  1. College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 210009, China

    Shiqi Jin, Xu Qiu, Baoyu Huang, Lixi Wang & Qitu Zhang

  2. Jiangsu Collaborative Innovation Center for Advanced Inorganic Punction Composites, Nanjing, 210009, China

    Shiqi Jin, Xu Qiu, Baoyu Huang, Lixi Wang & Qitu Zhang

  3. Guangdong Fenghua Advanced Technology Company Limited, Zhaoqing, 526020, Guangdong, China

    Zhenxiao Fu

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  1. Shiqi Jin
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  2. Xu Qiu
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Correspondence to Lixi Wang.

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Jin, S., Qiu, X., Huang, B. et al. Dielectric properties of modified BNT/PTFE composites for microwave RF antenna applications. J Mater Sci: Mater Electron 27, 8378–8383 (2016). https://doi.org/10.1007/s10854-016-4849-y

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  • DOI: https://doi.org/10.1007/s10854-016-4849-y

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