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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Synthesis and microwave absorbing properties of polyaniline/MnFe_2O_4 nanocomposite
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Synthesis and microwave absorbing properties of polyaniline/MnFe_2O_4 nanocomposite

机译：聚苯胺/ MnFe_2O_4纳米复合材料的合成及吸波性能

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摘要

Conductive polyaniline (PANi)-manganese ferrite (MnFe_2O_4) nanocomposites with core-shell structure were synthesized by in situ polymerization in the presence of dodecyl benzene sulfonic acid (DBSA) as the surfactant and dopant and ammonium persulfate (APS) as the oxidant. The structure and magnetic properties of manganese ferrite nanoparticles were measured by using powder X-ray diffraction (XRD) and vibrating sample magnetometer (VSM), respectively. Its morphology, microstructure and DC conductivity of the nanocomposite were characterized by scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FTIR) and four-wire-technique, respectively. The microwave absorbing properties of the nanocomposite powders dispersing in resin acrylic coating with the coating thickness of 1.4 mm were investigated by using vector network analyzers in the frequency range of 8-12 GHz. A minimum reflection loss of -15.3 dB was observed at 10.4 GHz.
机译：以十二烷基苯磺酸（DBSA）为表面活性剂，掺杂剂和过硫酸铵（APS）为氧化剂，通过原位聚合合成了具有核-壳结构的导电聚苯胺（PANi）-锰铁氧体（MnFe_2O_4）纳米复合材料。分别使用粉末X射线衍射（XRD）和振动样品磁强计（VSM）测量了锰铁氧体纳米颗粒的结构和磁性。分别通过扫描电子显微镜（SEM），傅立叶变换红外光谱（FTIR）和四线技术对纳米复合材料的形貌，微观结构和直流电导率进行了表征。使用矢量网络分析仪在8-12 GHz的频率范围内研究了纳米复合粉体在1.4 mm涂层丙烯酸树脂分散体中的微波吸收性能。在10.4 GHz处观察到最小反射损耗为-15.3 dB。

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