Enhancing the mechanical and electrical properties of irradiated acrylonitrile butadiene rubber/magnetite nanocomposites for electromagnetic shielding applications

IF 3.6 4区 材料科学 Q2 MATERIALS SCIENCE, COMPOSITES
Rania Mounir, MM El Zayat, A Sharaf, AA El-Gamal
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引用次数: 0

Abstract

By using a traditional roll mill, nitrile butadiene rubber (NBR)/magnetite nanocomposites for electromagnetic interference shielding applications were successfully prepared. The synthesized magnetite nanoparticles were analyzed using X-ray diffraction (XRD), Fourier transform infrared (FTIR), transmission electron microscope (TEM), and energy dispersive X-ray (EDX) techniques. The results from these techniques emphasis the preparation of Fe3O4 with a diameter range between 3.8 nm and 19 nm. Before and after gamma irradiation at different doses the impact of adding different contents of magnetite nanoparticles in NBR was carefully examined through mechanical and electrical measurements for all samples at room temperature. The mechanical parameters and the electrical properties of NBR were enhanced after adding Fe3O4 nanoparticles. Electromagnetic interference shielding (EMI) for all fabricated nanocomposites before and after gamma-ray irradiation under the same conditions of pressure, humidity and temperature was performed as a promising application for these materials in practical life. The electromagnetic shielding effectiveness (SE) of the prepared samples was measured in the X-band of the radio frequency range. There are three global maxima around 9.4 GHz, 10.4 GHz, and 11.4 GHz. Subsequent reinforcement of Fe3O4 nanoparticles into NBR produced higher shielding effectiveness for radio frequency signals. Furthermore, applied gamma radiation doses improved the shielding properties of the fabricated nanocomposites.
增强辐照丙烯腈丁二烯橡胶/磁铁矿纳米复合材料在电磁屏蔽应用中的机械和电气性能
通过使用传统的辊轧机,成功制备了用于电磁干扰屏蔽的丁腈橡胶(NBR)/磁铁矿纳米复合材料。利用 X 射线衍射 (XRD)、傅立叶变换红外 (FTIR)、透射电子显微镜 (TEM) 和能量色散 X 射线 (EDX) 技术对合成的磁铁矿纳米粒子进行了分析。这些技术的结果表明,制备出的 Fe3O4 直径范围在 3.8 纳米到 19 纳米之间。在室温下对所有样品进行不同剂量的伽马射线辐照前后,通过机械和电气测量仔细研究了在丁腈橡胶中添加不同含量的磁铁矿纳米粒子的影响。加入 Fe3O4 纳米粒子后,丁腈橡胶的机械参数和电气性能都得到了提高。在相同的压力、湿度和温度条件下,对所有制备的纳米复合材料进行伽马射线辐照前后的电磁干扰屏蔽(EMI)测试,结果表明这些材料在实际生活中的应用前景广阔。在射频范围的 X 波段测量了所制备样品的电磁屏蔽效能(SE)。在 9.4 GHz、10.4 GHz 和 11.4 GHz 附近有三个全局最大值。在丁腈橡胶中添加 Fe3O4 纳米粒子后,可产生更高的射频信号屏蔽效果。此外,应用伽马辐射剂量也提高了纳米复合材料的屏蔽性能。
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来源期刊
Journal of Thermoplastic Composite Materials
Journal of Thermoplastic Composite Materials 工程技术-材料科学:复合
CiteScore
8.00
自引率
18.20%
发文量
104
审稿时长
5.9 months
期刊介绍: The Journal of Thermoplastic Composite Materials is a fully peer-reviewed international journal that publishes original research and review articles on polymers, nanocomposites, and particulate-, discontinuous-, and continuous-fiber-reinforced materials in the areas of processing, materials science, mechanics, durability, design, non destructive evaluation and manufacturing science. This journal is a member of the Committee on Publication Ethics (COPE).
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