Raagulan Kanthasamy, Ghim Jinsoo, Braveenth Ramanaskanda, Chai Kyu Yun, Kim Bo Mi
Division of Bio-Nanochemistry, College of Natural Sciences, Wonkwang University Iksan City 570-749 Korea
Department of Chemical Engineering, Wonkwang University Iksan 570-749 Korea
RSC Adv. 2022 May 19;12(24):15316-15328. doi: 10.1039/d1ra09124g. eCollection 2022 May 17.
The proliferation of the latest electronic gadgets and wireless communication devices can trigger electromagnetic interference (EMI), which has a detrimental impact on electronic devices and humans. Efficient EMI shielding materials are required for EMI-SE and they should be durable in external environments, lightweight, and cost-effective. GNO-coated glass-fiber-GNO-maleic anhydride-grafted polypropylene (MAPP) composite and carbon fiber-reinforced nylon 1D-2D nanocomposite foam were successfully prepared a cost-effective thermal process. The composites were characterized using scanning electron microscopy (SEM), Raman spectroscopy, X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The PP and nylon-based composites with ∼13% filler showed maximum electrical conductivity (EC) of 878 mS cm and 1381 mS cm, respectively. The GNO-coated glass-fiber-GNO-MAPP foam displays a maximum EMI-SE of 120.6 dB, while the nylon graphene-carbon nanotube-metal nanoplatelet foam exhibits a maximum EMI-SE of 139.1 dB in the X-band region. The GFCFFeGMAPP composite possesses a minimum thickness of 2.56 mm and blocks most incoming radiation. These are some of the highest EMI-SE values reported so far for glass fiber and nylon-based composites, and the nylon-based composite showed excellent properties compared to the glass fiber-based composite. Thus, we believe that the developed composites can be used in a wide range of real applications, such as in military vehicles, aviation, automobiles, and the packaging of electronic circuits.
最新的电子小工具和无线通信设备的激增会引发电磁干扰（EMI），这对电子设备和人类都有不利影响。电磁干扰屏蔽效能（EMI-SE）需要高效的电磁干扰屏蔽材料，并且它们在外部环境中应耐用、轻便且具有成本效益。通过一种具有成本效益的热工艺成功制备了氧化石墨烯包覆玻璃纤维-氧化石墨烯-马来酸酐接枝聚丙烯（MAPP）复合材料和碳纤维增强尼龙1D-2D纳米复合泡沫。使用扫描电子显微镜（SEM）、拉曼光谱、X射线衍射（XRD）和X射线光电子能谱（XPS）对复合材料进行了表征。填充量约为13%的聚丙烯和尼龙基复合材料的最大电导率（EC）分别为878 mS/cm和1381 mS/cm。氧化石墨烯包覆玻璃纤维-氧化石墨烯-MAPP泡沫在X波段区域的最大电磁干扰屏蔽效能为120.6 dB，而尼龙石墨烯-碳纳米管-金属纳米片泡沫的最大电磁干扰屏蔽效能为139.1 dB。GFCFFeGMAPP复合材料的最小厚度为2.56 mm，可阻挡大部分入射辐射。这些是迄今为止报道的玻璃纤维和尼龙基复合材料中一些最高的电磁干扰屏蔽效能值，并且与玻璃纤维基复合材料相比，尼龙基复合材料表现出优异的性能。因此，我们认为所开发的复合材料可用于广泛的实际应用，如军事车辆、航空、汽车以及电子电路的包装。
