Liang Chaobo, Gu Zhoujie, Zhang Yali, Ma Zhonglei, Qiu Hua, Gu Junwei
Key Laboratory of Functional Nanocomposites of Shanxi Province, College of Materials Science and Engineering, North University of China, Taiyuan, 030051, China.
Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xian, 710072, China.
Nanomicro Lett. 2021 Aug 18;13(1):181. doi: 10.1007/s40820-021-00707-2.
With the widespread application of electronic communication technology, the resulting electromagnetic radiation pollution has been significantly increased. Metal matrix electromagnetic interference (EMI) shielding materials have disadvantages such as high density, easy corrosion, difficult processing and high price, etc. Polymer matrix EMI shielding composites possess light weight, corrosion resistance and easy processing. However, the current polymer matrix composites present relatively low electrical conductivity and poor EMI shielding performance. This review firstly discusses the key concept, loss mechanism and test method of EMI shielding. Then the current development status of EMI shielding materials is summarized, and the research progress of polymer matrix EMI shielding composites with different structures is illustrated, especially for their preparation methods and evaluation. Finally, the corresponding key scientific and technical problems are proposed, and their development trend is also prospected.
随着电子通信技术的广泛应用，由此产生的电磁辐射污染显著增加。金属基电磁干扰（EMI）屏蔽材料存在密度高、易腐蚀、加工困难、价格高等缺点。聚合物基EMI屏蔽复合材料具有重量轻、耐腐蚀和易于加工等优点。然而，目前的聚合物基复合材料电导率相对较低，EMI屏蔽性能较差。本文综述首先讨论了EMI屏蔽的关键概念、损耗机制和测试方法。然后总结了EMI屏蔽材料的当前发展现状，并阐述了不同结构的聚合物基EMI屏蔽复合材料的研究进展，特别是其制备方法和评价。最后，提出了相应的关键科学技术问题，并对其发展趋势进行了展望。
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