Lightweight, thermal-insulating, flame-retardant Co@CNT composite carbon foam for efficient broadband electromagnetic wave absorption

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING Composites Part A: Applied Science and Manufacturing Pub Date : 2025-02-06 DOI:10.1016/j.compositesa.2025.108791

Cuiqing Zhou , Junyu Lu , Mushan Yuan , Long Ni , Haichao Meng , Shaoyu Qiu , Mei Liang , Yinfu Luo , Huawei Zou

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Abstract

Constructing efficient and multifunctional integrated electromagnetic wave (EMW) absorbing materials is an effective strategy to address the complex electromagnetic environments. Herein, the ZIF-67@CNT with multidimensional heterogeneous structure were designed and embedded into the polyimide (PI) skeleton to obtain the Co@CNT carbon foams (Co@CNT/CF) by high-temperature annealing. The microstructure, electromagnetic parameters of Co@CNT/CF can be tailored by adjusting the size and the loading of ZIF-67@CNT. The Co@CNT/CF demonstrated a minimum reflection loss of −61.7 dB at 7.3 mm and an effective absorption bandwidth of up to 10.36 GHz at 5.8 mm, covering the entire X and Ku bands. The radar cross section (RCS) distribution indicated that Co@CNT/CF exhibited excellent RCS attenuation capability with the maximum value of 17.1 dB m². Further exploration demonstrated that Co@CNT/CF displayed excellent mechanical properties, flame-retardant and thermal insulation performance, which provides a research strategy for the design of multifunctional EMW absorbing materials in extreme environments.

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轻质、隔热、阻燃Co@CNT复合碳泡沫，可有效吸收宽带电磁波

构建高效、多功能的集成电磁波吸波材料是解决复杂电磁环境的有效策略。本文设计了具有多维非均相结构的ZIF-67@CNT，并将其嵌入到聚酰亚胺（PI）骨架中，通过高温退火得到Co@CNT泡沫碳（Co@CNT/CF）。Co@CNT/CF的微观结构和电磁参数可以通过调节尺寸和ZIF-67@CNT的加载来定制。Co@CNT/CF在7.3 mm处的最小反射损耗为- 61.7 dB，在5.8 mm处的有效吸收带宽高达10.36 GHz，覆盖了整个X和Ku波段。雷达截面（RCS）分布表明Co@CNT/CF具有良好的RCS衰减能力，最大值为17.1 dB m2。进一步研究表明Co@CNT/CF具有优异的力学性能、阻燃性能和保温性能，为极端环境下多功能EMW吸波材料的设计提供了研究策略。

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来源期刊

Composites Part A: Applied Science and Manufacturing 工程技术-材料科学：复合

CiteScore

15.20

自引率

5.70%

发文量

492

审稿时长

30 days

期刊介绍： Composites Part A: Applied Science and Manufacturing is a comprehensive journal that publishes original research papers, review articles, case studies, short communications, and letters covering various aspects of composite materials science and technology. This includes fibrous and particulate reinforcements in polymeric, metallic, and ceramic matrices, as well as 'natural' composites like wood and biological materials. The journal addresses topics such as properties, design, and manufacture of reinforcing fibers and particles, novel architectures and concepts, multifunctional composites, advancements in fabrication and processing, manufacturing science, process modeling, experimental mechanics, microstructural characterization, interfaces, prediction and measurement of mechanical, physical, and chemical behavior, and performance in service. Additionally, articles on economic and commercial aspects, design, and case studies are welcomed. All submissions undergo rigorous peer review to ensure they contribute significantly and innovatively, maintaining high standards for content and presentation. The editorial team aims to expedite the review process for prompt publication.