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Synthesis and Microwave Absorption Properties of BaTiO3-polypyrrole Composite
Qiao-ling Li*,Cun-rui Zhang,Jian-qiang Li
Author NameAffiliationE-mail
Qiao-ling Li* Department of Chemistry, North University of China, Taiyuan 030051, China qiaolingl@163.com 
Cun-rui Zhang Department of Chemistry, North University of China, Taiyuan 030051, China  
Jian-qiang Li Department of Chemistry, North University of China, Taiyuan 030051, China  
Abstract:
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.
Key words:  BaTiO3, Polypyrrole, Microwave absorbing
FundProject:
聚吡咯-钛酸钡复合材料的制备和吸波性能
李巧玲*,张存瑞,李建强
摘要:
通过化学氧化法在乳液聚合体系中合成了聚吡咯. 然后以脱脂棉作为模板使用溶胶-凝胶法合成了钛酸钡微带. 以合成的两种材料作为基体相按不同的比例制备了聚吡咯-钛酸钡复合材料. 复合材料的结构形貌和性能通过红外、X射线衍射、扫描电镜以及网络分析仪检测. 使用PNA3629D网络分析仪测定复合材料在S和C波段的复数介电常数和微波损耗. 研究了钛酸钡和聚吡咯的质量比对复合材料吸波性能的影响. 提出了聚吡咯-钛酸钡复合材料的吸波机理.
关键词:  钛酸钡,聚吡咯,吸波性能
DOI:10.1088/1674-0068/23/05/603-607
分类号: