Insulating and flexible electromagnetic-shielding nanofiber composite film for direct wrapping on electronics even in harsh conditions

IF 23.2 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Composites and Hybrid Materials Pub Date : 2025-03-14 DOI:10.1007/s42114-025-01272-7

Xueting Zhang, Guoqiang Jin, Yan Liu, Yake Liu, Mingyan Zhang, Congju Li, Xiuling Zhang, Dapeng Cao

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引用次数: 0

Abstract

Current electromagnetic interference (EMI) shielding materials mainly depends on electrical conductivity, it still remains great challenges to avoid short-circuit risks and assemble into macroscopic films with strong mechanical strength. To address these problems, we rationally design and prepare a multilayer-structured EMI shielding nanocomposite film (P-Co-MX), where MOF-derived porous Co–C as the magnetic layer and MXene as the conductive layer are sandwiched between two poly(m-phenylene isophthalamide) (PMIA) nanofiber membranes, with the PMIA membranes as insulating and protection layers. Benefiting from the rational design of multi-layer structure, P-Co-MX exhibits high EMI shielding effectiveness in X-band (8.2–12.4 GHz) with absorption-dominated EMI shielding feature. Owing to the protection of PMIA nanofiber layers, P-Co-MX shows high resistivity, excellent flexibility and stable EMI shielding performance even in harsh conditions, including 200 ℃ high temperature, − 196 ℃ ultralow-temperature and corrosive conditions (pH = 3). These unique features allow for direct wrapping on the signal lines in highly miniaturized and flexible electronics to solve EMI issue.

Graphical Abstract

查看原文本刊更多论文

绝缘和柔性电磁屏蔽纳米纤维复合薄膜，即使在恶劣的条件下也可以直接包裹在电子产品上

目前的电磁干扰（EMI）屏蔽材料主要依赖于导电性，如何避免短路风险并组装成具有强机械强度的宏观薄膜仍然是一个很大的挑战。为了解决这些问题，我们合理设计并制备了多层结构的电磁屏蔽纳米复合膜（P-Co-MX），其中mof衍生的多孔Co-C作为磁性层，MXene作为导电层夹在两层聚间苯二苯酰胺（PMIA）纳米纤维膜之间，PMIA膜作为绝缘和保护层。得益于合理的多层结构设计，P-Co-MX在x波段（8.2-12.4 GHz）具有较高的电磁干扰屏蔽效果，具有吸收主导的电磁干扰屏蔽特性。由于PMIA纳米纤维层的保护，P-Co-MX即使在200℃高温、- 196℃超低温和腐蚀条件（pH = 3）下也能表现出高电阻率、优异的柔韧性和稳定的电磁干扰屏蔽性能。这些独特的功能允许在高度小型化和柔性电子设备的信号线上直接包装，以解决EMI问题。图形抽象

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来源期刊

Advanced Composites and Hybrid Materials Multiple-

CiteScore

26.00

自引率

21.40%

发文量

185

期刊介绍： Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.