Chaobo Liang#, Hua Qiu#, Yali Zhang, Yaqing Liu*, Junwei Gu*. External field-assisted techniques for polymer matrix composites with electromagnetic interference shielding. Science Bulletin, 2023, 68(17):?1938-1953. 2022IF=18.9.（1區綜合類Top期刊，中國科技期刊卓越行動計劃-領軍類期刊項目）
https://doi.org/10.1016/j.scib.2023.07.046
Abstract
The rapid development of mobile devices has greatly improved the lives of people, but they have also caused problems with electromagnetic interference (EMI) and information security. Therefore, there is an urgent need to develop high performance EMI shielding materials to suppress electromagnetic radiation and prevent information leakage. Some reports point out that the self-orientation behavior of fillers under external forces contributes to the improvement of EMI shielding performance. So how to construct an effective filler orientation structure in the polymer matrix is becoming a hot topic in the research of EMI shielding materials. In view of the fact that there are few reports on the preparation of polymer matrix EMI shielding composites by external field induction, from this perspective, we first highly focus on strategies for the construction of conductive networks within composites based on external field induction. Subsequently, the research progress on the preparation of polymer matrix EMI shielding composites by inducing the orientation of inorganic fillers through external fields, including temperature, electrostatic, gravity, mechanical force and magnetic fields, is organized and sorted out in detail. Notably, the particular response relationship between the unique composite structures prepared by external field induction and the incident electromagnetic waves is further dissected. Finally, the key scientific problems that need to be solved in the preparation of polymer matrix EMI shielding composites assisted by external fields are proposed. The approach discussed and the strategies proposed are expected to provide some guidance for the innovative design of high-performance polymer matrix EMI shielding composites.
通訊技術不斷升級以及移動設備的快速發展極大地改善了人們生活，但也帶來了電磁干擾和信息安全問題。因此亟需開發高性能電磁屏蔽材料來抑制電磁輻射和阻止信息泄露。研究發現，在外力作用下填料的自取向行為有助于實現聚合物基復合材料電磁屏蔽性能的提升，因此如何在聚合物基體中構筑有效的填料取向結構正成為電磁屏蔽材料研究的熱點。但是目前鮮有文章對外場輔助制備聚合物基電磁屏蔽復合材料進行綜述。我們首先高度關注外場誘導復合材料內導電網絡的構建策略；隨后，詳細地組織和梳理了利用外場誘導無機填料取向制備聚合物基電磁屏蔽復合材料的研究進展，其中外場包括溫度場、靜電場、重力場、機械力場和磁場；值得注意的是，基于外場誘導制備的獨特復合材料結構與電磁波之間的特殊響應關系通過精選的案例被進一步剖析；最后，提出外場輔助制備聚合物基電磁屏蔽復合材料各自亟待解決的關鍵科學和技術問題，并對未來的發展方向進行了理性預測。本文討論的方法和提出的策略有望為高性能聚合物基電磁屏蔽復合材料的創新設計提供一些指導意見。
論文亮點
1. 梳理了利用外場誘導無機填料取向制備聚合物基電磁屏蔽復合材料的研究進展。
2. 明晰了基于外場誘導制備的獨特復合材料結構與電磁波之間的特殊響應關系。
3. 提出了外場誘導制備聚合物基電磁屏蔽復合材料存在的問題與挑戰，并對未來的發展方向進行了理性預測。
第一作者：梁超博
郵箱：lcb@nuc.edu.cn