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首页> 外文期刊>IEEE Transactions on Magnetics >Magnetorheological Characteristics of Nano-Sized Iron Oxide Coated Polyaniline Composites
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Magnetorheological Characteristics of Nano-Sized Iron Oxide Coated Polyaniline Composites

机译：纳米氧化铁包覆聚苯胺复合材料的磁流变特性

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摘要

We synthesized magnetic smart composite particles comprising polyaniline (PANI) and Fe3O4 nanoparticles (PANI@Fe3O4) by a micelle-assisted self-assembly method and evaluated their magnetorheological (MR) properties. The microstructures of the PANI@Fe3O4 composites were characterized by using scanning electron microscopy and X-ray diffraction analysis. The chemical structure of the composites was also investigated using Fourier transform–infrared spectroscopy, while their magnetic properties were characterized using a vibrating sample magnetometer. The MR properties of the PANI@Fe3O4-based MR fluid were examined using a rotational rheometer with a magnetic field supply device. Typical MR characteristics, such as shear viscosity, shear stress, dynamic yield stress, and dynamic moduli, were obtained from the rheological measurements, and they increased with applied magnetic field strength.
机译：我们通过胶束辅助自组装方法合成了包含聚苯胺（PANI）和Fe3O4纳米颗粒（PANI @ Fe3O4）的磁性智能复合颗粒，并评估了它们的磁流变（MR）性能。通过扫描电子显微镜和X射线衍射分析表征了PANI @ Fe3O4复合材料的微观结构。复合材料的化学结构也使用傅里叶变换红外光谱进行了研究，而其磁性能则通过振动样品磁力计进行了表征。使用带有磁场供应装置的旋转流变仪检查了基于PANI @ Fe3O4的MR流体的MR特性。从流变学测量中获得了典型的MR特性，例如剪切粘度，剪切应力，动态屈服应力和动态模量，它们随施加的磁场强度而增加。

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