电磁屏蔽
材料科学
电磁干扰
石墨烯
电磁干扰
复合材料
热稳定性
氧化物
图层(电子)
导电体
大气温度范围
光电子学
纳米技术
电子工程
化学工程
物理
气象学
工程类
冶金
作者
Yi Zhang,Jialong Han,Junfang Chang,Xiaoping Luo,Yahong Zhang,Chunhong Gong
标识
DOI:10.1016/j.synthmet.2023.117287
摘要
In this work, the alternating multi-layer structured reduced graphene oxide&polyether sulfone (RGOx&PESy) film is fabricated via a facile thermal pressure process, which has independently aligned packing layers to ensure the conductive network. The electromagnetic interference (EMI) shielding performance of the RGOx&PESy film can be adjusted with facility by controlling the layer number of the pure RGO and PES films. At a fixed thickness of 0.35 mm, the shielding performance of the multi-layer structured films increases with the increased layer number of the RGO films. Especially, when the number of RGO film is seven, the RGO7&PES6 film provides an efficient EMI shielding performance of about 45 dB in the whole X-band with a low filler content of 7.39 wt%. Moreover, due to the excellent temperature stability of both RGO and PES, the effective EMI shielding performance can be maintained in the wide temperature range of 298 ∼ 473 K. This study provides a facile method for preparing the RGO-based EMI shielding film materials with excellent high-temperature resistance and ultra-low filler content.
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