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首页> 外文期刊>Journal of Applied Polymer Science >Conducting polymer coated textile based multilayered shields for suppression of microwave radiations in 8.2-12.4 GHz range
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Conducting polymer coated textile based multilayered shields for suppression of microwave radiations in 8.2-12.4 GHz range

机译：导电聚合物涂覆的基于纺织品的多层屏蔽，可抑制8.2-12.4 GHz范围内的微波辐射

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摘要

Polypyrrole (PPY) based conducting textiles were prepared by in situ polymerization of pyrrole over cotton fabric. The SEM micrographs show smooth and uniform coating of PPY over fabric with only few loose dendrites. The elemental analysis and XRD patterns revealed the presence of iron whereas magnetization measurement shows ferromagnetic signature with well defined hysteresis loop and saturation magnetization (Ms) of 0.3 emu/g. The good antistatic property and rapid static charge dissipability was reflected by decay profile with decay time of only 0.16 sec. In addition, the microwave absorption studies of multilayered shields; made up of these conducting fabrics; show absorption dominated total shielding effectiveness (SE_T) value of -43.9 dB (i.e. >99.99% attenuation) which can be attributed to the better impedance matching, high microwave conductivity, shallow skin depth, and multiple scattering of incident electromagnetic radiation.
机译：通过吡咯在棉织物上原位聚合制备聚吡咯（PPY）基导电纺织品。 SEM显微照片显示PPY在织物上的光滑均匀涂层，只有很少的松散树突。元素分析和XRD图谱表明存在铁，而磁化强度测量表明铁磁签名具有明确的磁滞回线和0.3 emu / g的饱和磁化强度（Ms）。衰减曲线反映了良好的抗静电性能和快速的静电荷耗散性，衰减时间仅为0.16秒。另外，多层屏蔽的微波吸收研究;由这些导电织物组成;显示出吸收为主导的总屏蔽效率（SE_T）值为-43.9 dB（即> 99.99％衰减），这可以归因于更好的阻抗匹配，更高的微波传导率，较浅的集肤深度以及入射电磁辐射的多次散射。

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