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区综合类Top期刊，中国科技期刊卓越行动计划-领军类期刊项目）

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.

通讯技术不断升级以及移动设备的快速发展极大地改善了人们生活，但也带来了电磁干扰和信息安全问题。因此亟需开发高性能电磁屏蔽材料来抑制电磁辐射和阻止信息泄露。研究发现，在外力作用下填料的自取向行为有助于实现聚合物基复合材料电磁屏蔽性能的提升，因此如何在聚合物基体中构筑有效的填料取向结构正成为电磁屏蔽材料研究的热点。但是目前鲜有文章对外场辅助制备聚合物基电磁屏蔽复合材料进行综述。我们首先高度关注外场诱导复合材料内导电网络的构建策略；随后，详细地组织和梳理了利用外场诱导无机填料取向制备聚合物基电磁屏蔽复合材料的研究进展，其中外场包括温度场、静电场、重力场、机械力场和磁场；值得注意的是，基于外场诱导制备的独特复合材料结构与电磁波之间的特殊响应关系通过精选的案例被进一步剖析；最后，提出外场辅助制备聚合物基电磁屏蔽复合材料各自亟待解决的关键科学和技术问题，并对未来的发展方向进行了理性预测。本文讨论的方法和提出的策略有望为高性能聚合物基电磁屏蔽复合材料的创新设计提供一些指导意见。

论文亮点

1. 梳理了利用外场诱导无机填料取向制备聚合物基电磁屏蔽复合材料的研究进展。

2. 明晰了基于外场诱导制备的独特复合材料结构与电磁波之间的特殊响应关系。

3. 提出了外场诱导制备聚合物基电磁屏蔽复合材料存在的问题与挑战，并对未来的发展方向进行了理性预测。

第一作者：梁超博

邮箱：lcb@nuc.edu.cn