Nowadays, the rapid development of information networks and the large-scale popularization of electronic equipment have provided great convenience for human life. However, the induced electromagnetic radiation has caused threatens to human health and the service life of electronic equipment. To overcome the above shortcomings, recently, functionalized materials with electromagnetic interference (EMI) shielding have been widely investigated and reported. As a renewable natural polymer material, cellulose possesses attractive features such as perfect hydrophilicity, chirality, biodegradability, broad chemical modifying capacity, mechanical properties, and low price. The inherent properties of cellulose make it an excellent substrate for preparing EMI shielding materials. So far, numerous cellulose-based electromagnetic shielding materials have been reported, but the classification and description of the design structures are very rare. In this paper, the basic principles and testing methods of electromagnetic shielding were first systematically summarized, and then the structure and properties of cellulose-based electromagnetic shielding materials were reviewed. In addition, the progress of the current application and structural design of cellulose-based electromagnetic shielding materials were also summarized. Finally, the challenges of cellulose-based electromagnetic shielding materials and the future development trend and opportunity was discussed. This review provided a reference for the further development of cellulose-based electromagnetic shielding materials.

中文翻译：

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EMI屏蔽纤维素基复合材料的应用和结构设计最新进展


如今，信息网络的快速发展和电子设备的大规模普及，为人类的生活提供了极大的便利。然而，感应电磁辐射对人体健康和电子设备的使用寿命造成了威胁。为了克服上述缺点，最近，具有电磁干扰（EMI）屏蔽功能的功能化材料已被广泛研究和报道。纤维素作为一种可再生的天然高分子材料，具有完美的亲水性、手性、生物降解性、广泛的化学改性能力、机械性能和低廉的价格等吸引人的特点。纤维素的固有特性使其成为制备EMI屏蔽材料的优异基材。迄今为止，纤维素基电磁屏蔽材料的报道较多，但其设计结构的分类和描述却很少。本文首先系统总结了电磁屏蔽的基本原理和测试方法，然后对纤维素基电磁屏蔽材料的结构和性能进行了综述。此外，还总结了目前纤维素基电磁屏蔽材料的应用和结构设计进展。最后讨论了纤维素基电磁屏蔽材料面临的挑战以及未来的发展趋势和机遇。该综述为纤维素基电磁屏蔽材料的进一步开发提供了参考。