Enhancing metacomposite properties and electromagnetic interference shielding: exploring the interplay between manufacturing processability of carbon fiber elastomeric composite and permittivity/permeability effects

IF 23.2 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES Advanced Composites and Hybrid Materials Pub Date : 2024-10-26 DOI:10.1007/s42114-024-01036-9

Roberto C. Portes, Braulio H. K. Lopes, Mirabel C. Rezende, Gisele Amaral-Labat, Maurício R. Baldan

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Abstract

Aiming to maximize the electromagnetic performance of composite materials based on carbon fibers (CF), this work demonstrates a critical approach regarding important manufacturing parameters of composites, correlating the manipulation of the complex electric permittivity (ε’, ε”) and complex magnetic permeability (µ’, µ”), as well as the increase in the performance of electromagnetic interference (EMI) shielding effectiveness (SE). The electromagnetic characterization of composites based on polydimethylsiloxane (PDMS) reinforced with CF exhibited transitions in electromagnetic properties over the X-band frequency. The materials that are intrinsically dielectric induced the generation of an intense magnetic response and even the characteristic of metacomposite exhibiting negative ε’ and µ”. The samples showed transitions from a double-positive (DPS) medium to a double-negative (DNG) medium (-ε’ and -µ”) or a progression from DPS to a single-negative (SNG) medium (-µ”). Furthermore, some composites have also presented extremely high values of combined electric permittivity, magnetic permeability, Eddy current, and SE of 100.0 dB. The authors highlight the significant influence of composite processability, especially the insulator (PDMS) thickness, enabling the Maxwell–Wagner-Sillars effect and induction of an intense magnetic response. To predict/optimize the electromagnetic performance of composites, we also propose a computational simulation methodology using the Altair FEKO® software and correlate the Smith Chart with the material’s response.

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增强元复合材料性能和电磁干扰屏蔽：探索碳纤维弹性复合材料制造工艺性与介电常数/渗透率效应之间的相互作用

为了最大限度地提高基于碳纤维（CF）的复合材料的电磁性能，这项工作展示了一种有关复合材料重要制造参数的关键方法，将复电介电常数（ε', ε"）和复磁导率（µ', µ"）的控制以及电磁干扰（EMI）屏蔽效能（SE）的提高联系起来。用 CF 增强聚二甲基硅氧烷 (PDMS) 的复合材料的电磁特性在 X 波段频率上表现出电磁性能的转变。本质上属于电介质的材料产生了强烈的磁响应，甚至呈现出负 ε' 和 µ" 的元复合材料特征。这些样品显示了从双正介质（DPS）到双负介质（DNG）（-ε'和-µ"）的转变，或从 DPS 到单负介质（SNG）（-µ"）的转变。此外，一些复合材料的综合电导率、磁导率、涡流和 SE 值也达到了极高的 100.0 dB。作者强调了复合材料加工性的重要影响，尤其是绝缘体（PDMS）厚度，它能产生麦克斯韦-瓦格纳-西拉尔斯效应，并诱发强烈的磁响应。为了预测/优化复合材料的电磁性能，我们还提出了一种使用 Altair FEKO® 软件进行计算模拟的方法，并将史密斯图与材料的响应相关联。

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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.