先进的空心球形仙人掌状软磁LDH@MXeneHT纳米杂化材料，实现高效电磁防护

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2025-07-12 DOI:10.1016/j.compositesb.2025.112807

Yaqiang Duan , Weijun Yang , Yong Zhang , Yuchen Gu , Pengwu Xu , Deyu Niu , Yunpeng Huang , Shiqiang Song , Debora Puglia , Piming Ma

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引用次数: 0

摘要

为了提高电磁综合防护性能，满足航空航天需求，对功能纳米材料进行微结构设计是一种有效的策略。受球形仙人掌特殊结构的启发，本研究实现了软磁纳米杂化材料的高效电磁防护。层状双氢氧化氢FeNi3 （LDH）通过同步静电自组装在MXene表面原位成核并生长，得到了具有绣球结构（直径~ 5 μm）的中间产物LDH@MXene。LDH@MXene随后在500°C下退火，通过将绣球结构的片层“花瓣”转变为毛刺状结构，获得空心球状仙人掌状LDH@MXeneHT500纳米杂交种。LDH@MXeneHT500具有软磁特性，有利于感应电荷的输运和电磁能量的消耗。因此，LDH@MXeneHT500纳米混合材料在较宽的吸收带宽（EAB = 6.12 GHz）下具有较高的反射损耗（RLmin =−76.1 dB），在X波段具有较高的电磁干扰屏蔽效率（EMI SE = 47.2 dB），具有优异的综合电磁保护能力。为了扩大其应用范围，进一步制备了聚二甲基硅氧烷(PDMS)/LDH@MXeneHT500纳米复合材料，该复合材料具有更高的机械强度（9.48 MPa）和高效的电磁保护性能(RLmin = - 65.11 dB, EAB = 7.64 GHz, EMI SE >；50db （3 - 18ghz）。因此，LDH@MXeneHT500纳米杂化材料和PDMS/LDH@MXeneHT500纳米复合材料在电磁保护领域，如航空航天和卫星通信领域显示出巨大的应用潜力。

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Advanced hollow ball-cactus-like soft-magnetic LDH@MXeneHT nanohybrid materials towards highly efficient electromagnetic protection

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Advanced hollow ball-cactus-like soft-magnetic LDH@MXeneHT nanohybrid materials towards highly efficient electromagnetic protection

In order to improve the comprehensive electromagnetic protection and meet the aerospace demands, designing the microstructure of functional nanomaterials is an effective strategy. Inspired by the special structure of the ball-cactus, in this work, soft-magnetic nanohybrid materials are realized for highly efficient electromagnetic protection. Layered double FeNi₃ hydroxide (LDH) is in-situ nucleated and grown on the surface of MXene via synchronous electrostatic self-assembling, leading to an intermediate product - LDH@MXene - with a hydrangea microstructure (diameter ∼5 μm). LDH@MXene is subsequently annealed at 500 °C to obtain a hollow ball-cactus-like LDH@MXene_HT500 nanohybrid, by transforming the lamellar “petals” of the hydrangea structure into burr-like structures. LDH@MXene_HT500 has soft-magnetic characteristics, facilitating the transport of induced charges and the consumption of electromagnetic energy. Therefore, LDH@MXene_HT500 nanohybrid exhibits excellent comprehensive electromagnetic protection capabilities, such as high reflection loss (RL_min = −76.1 dB) in a wide absorption bandwidth (EAB = 6.12 GHz), and high electromagnetic interference shielding efficiency (EMI SE = 47.2 dB in X band). To broaden its application, poly(dimethylsiloxane) (PDMS)/LDH@MXene_HT500 nanocomposites are further prepared that exhibit improved mechanical strength (9.48 MPa) and highly efficient electromagnetic protection performances (RL_min = −65.11 dB and EAB = 7.64 GHz, EMI SE > 50 dB in 3–18 GHz). Therefore, both the LDH@MXene_HT500 nanohybrid materials and PDMS/LDH@MXene_HT500 nanocomposites show great potential in electromagnetic protection applications, such as in the area of aerospace and satellite communication.

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来源期刊

Composites Part B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.