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Excellent Lightweight and Flexible Electromagnetic Interference Shielding Nanocomposites Based on Polypropylene with MnFe

机译:基于聚丙烯的优异轻质和柔韧的电磁干扰屏蔽纳米复合材料与MNFE

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摘要

In this work, various tunable sized spinel ferrite MnFe2O4 nanoparticles (namely MF20, MF40, MF60 and MF80) with reduced graphene oxide (RGO) were embedded in a polypropylene (PP) matrix. The particle size and structural feature of magnetic filler MnFe2O4 nanoparticles were controlled by sonochemical synthesis time 20 min, 40 min, 60 min and 80 min. As a result, the electromagnetic interference shielding characteristics of developed nanocomposites MF20-RGO-PP, MF40-RGO-PP, MF60-RGO-PP and MF80-RGO-PP were also controlled by tuning of magnetic/dielectric loss. The maximum value of total shielding effectiveness (SET) was 71.3 dB for the MF80-RGO-PP nanocomposite sample with a thickness of 0.5 mm in the frequency range (8.2–12.4 GHz). This lightweight, flexible and thin nanocomposite sheet based on the appropriate size of MnFe2O4 nanoparticles with reduced graphene oxide demonstrates a high-performance advanced nanocomposite for cutting-edge electromagnetic interference shielding application.
机译:在这项工作中,将各种可调谐尺寸的尖晶石铁氧体MnFe2O4纳米颗粒(即MF20,MF40,MF60和MF80)嵌入聚丙烯(PP)基质中嵌入氧化石墨烯(RGO)中。磁性填料MnFe2O4纳米颗粒的粒度和结构特征由经说的合成时间20分钟,40分钟,60分钟和80分钟控制。结果,通过调谐磁/介电损耗,还控制开发纳米复合材料MF20-RGO-PP,MF40-RGO-PP,MF60-RGO-PP和MF80-RGO-PP的电磁干扰屏蔽特性。对于MF80-RGO-PP纳米复合样品的总屏蔽效果(设定)的最大值为71.3dB,频率范围内的厚度为0.5mm(8.2-12.4GHz)。基于适当尺寸的MnFe2O4纳米颗粒具有较低的石墨烯氧化物的这种轻型,柔性和薄的纳米复合材料表明,用于尖端电磁干扰屏蔽应用的高性能先进的纳米复合材料。

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