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首页> 外文期刊>RSC Advances >Polymer nanocomposite foam filled with carbon nanomaterials as an efficient electromagnetic interference shielding material
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Polymer nanocomposite foam filled with carbon nanomaterials as an efficient electromagnetic interference shielding material

机译：填充有碳纳米材料的聚合物纳米复合泡沫材料，可作为一种有效的电磁干扰屏蔽材料

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摘要

Increasing use of the latest electronic gadgets in modern society causes rapid growth in electromagnetic pollution, which leads to detrimental effects on the function of highly sensitive precision electronic equipment as well as on human life. Mitigating this effect requires efficient electromagnetic radiation shielding materials, which should be lightweight, corrosion resistant and cost-effective. In this review article, we have presented lightweight polymer composite foams filled with carbon nanofibers, carbon nanotubes and graphene as efficient electromagnetic radiation shielding materials. It is seen that the low loading of multiwalled carbon nanotubes with uniform dispersion in polymer, uniform cell size of pore and controlled dielectric constant results in the attenuation of electromagnetic radiation by absorption phenomena. Flexible graphene-polymer composite foam derived using the chemical vapor deposition technique demonstrates a specific shielding effectiveness of similar to 333 dB cm(3) g(-1), which is the highest value among those reported in literature. The SE is mostly dominated by the absorption of electromagnetic radiation, which is due to the multiple reflection of radiation inside the cells of the composite foam. Moreover, different carbon nanomaterial, such as carbon nanofibers and few layer graphene-filled polymer composite foams, with varying content of conducting filler are reported in this review. Their use in different applications, their future prospective and the challenges ahead are discussed in this review.
机译：在现代社会中，越来越多地使用最新的电子产品会导致电磁污染的迅速增长，从而对高度敏感的精密电子设备的功能以及对人类的生活产生不利影响。减轻这种影响需要有效的电磁辐射屏蔽材料，该材料应轻巧，耐腐蚀且具有成本效益。在这篇评论文章中，我们介绍了填充有碳纳米纤维，碳纳米管和石墨烯的轻质聚合物复合泡沫材料，它们是有效的电磁辐射屏蔽材料。可以看出，多壁碳纳米管的低负荷，在聚合物中的均匀分散，均匀的孔尺寸和受控的介电常数导致吸收现象对电磁辐射的衰减。使用化学气相沉积技术获得的柔性石墨烯-聚合物复合泡沫材料显示出类似于333 dB cm（3）g（-1）的特定屏蔽效果，这是文献报道中的最高值。 SE主要由电磁辐射的吸收主导，这是由于复合泡沫孔内辐射的多次反射所致。此外，本篇综述还报道了不同的​​碳纳米材料，例如碳纳米纤维和极少层的石墨烯填充的聚合物复合泡沫，它们具有不同的导电填料含量。本文将讨论它们在不同应用中的用途，未来的前景以及未来的挑战。

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