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Volume 23 Issue 5
Oct.  2010
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Qiao-ling Li, Cun-rui Zhang, Jian-qiang Li. Synthesis and Microwave Absorption Properties of BaTiO3-polypyrrole Composite[J]. Chinese Journal of Chemical Physics , 2010, 23(5): 603-607. DOI: 10.1088/1674-0068/23/05/603-607
Citation: Qiao-ling Li, Cun-rui Zhang, Jian-qiang Li. Synthesis and Microwave Absorption Properties of BaTiO3-polypyrrole Composite[J]. Chinese Journal of Chemical Physics , 2010, 23(5): 603-607. DOI: 10.1088/1674-0068/23/05/603-607
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Synthesis and Microwave Absorption Properties of BaTiO3-polypyrrole Composite

  • Department of Chemistry, North University of China, Taiyuan 030051, China

Funds: This work was supported by the National Natu-ral Science Foundation of China (No.20571066 and No.20871108) and the Returned Overseas Students Fund Projects of Shanxi Province (No.200712011).
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  • Received Date: April 03, 2010
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  • BaTiO3 powders are prepared by sol-gel method by cotton template. Polypyrrole is pre-pared by chemical oxidation route in the emulsion polymerization system. Then BaTiO3-polypyrrole composites with different mixture ratios are prepared by as-prepared material.The structure, morphology, and properties of the composites are characterized with Infrared spectrum, X-ray diffraction, scanning electron microscope, and net-wok analyzer. The com-plex permittivity and reflection loss of the composites are measured at different microwave frequencies in S-band and C-band (0.03—6 GHz) employing vector network analyzer model PNA 3629D vector. The effect of the mass ratio of BaTiO3 to polypyrrole on the microwave loss properties of the composites is investigated. A possible microwave absorbing mechanism of BaTiO3-polypyrrole composite is proposed. The BaTiO3-polypyrrole composite can find applications in suppression of electromagnetic interference and reduction of radar signature.
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