木材和液态金属/纤维素气凝胶天然细胞通道的界面工程增强有效的各向异性导热和电磁干扰屏蔽

IF 23.2 2区 材料科学 Q1 MATERIALS SCIENCE, COMPOSITES
Xiaoyao Zhou, Lisong Dong, Shuxin Zheng, Danyang Cao, Jingjing Chen, Xin Feng, Jiahua Zhu, Xiaohua Lu, Liwen Mu
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引用次数: 0

摘要

在本研究中,通过界面工程在液态金属(LM)表面进行表面功能化,构建了一个连续的传热网络,在液态金属(LM)表面引入烷氧基和羧基,以促进与纤维素气凝胶(CA)表面羟基的强相互作用。这使得LM能够锚定在CA管壁上,从而促进了导热网络的形成。硫硫酸改性LM填充CA复合材料的导热系数达到7.421 W/(m·K),导热系数各向异性比为23,是未改性LM填充CA复合材料的1.35倍。通过有限元模拟进一步验证了复合材料在传热实验中获得的高传热效率,表明LM热网的构建为声子传递提供了有效的途径。此外,制备的复合材料具有优异的电磁干扰屏蔽性能,屏蔽效能为32.11 dB,屏蔽99.937%的入射辐射,导电率为25.64 S/m。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Enhancing effective anisotropic thermal conductivity and electromagnetic interference shielding via interface engineering of natural cellular channels in wood and liquid metal/cellulose aerogel

In this study, a continuous heat transfer network was constructed through interface engineering by performing surface functionalization on the surface of liquid metal (LM), on which alkoxy and carboxyl groups were introduced to facilitate strong interactions with the hydroxyl groups on cellulose aerogel (CA). This allowed LM to anchor onto the CA tube walls, which promoted the formation of a thermally conductive network. The thermal conductivity of CA filled with LM modified by thiomalic acid reached 7.421 W/(m·K) with a thermal conductivity anisotropy ratio of 23, which is 1.35 times higher than the unmodified LM-filled CA composite. The high heat transfer efficiency achieved in the composites in heat transfer experiments was further validated through finite element simulations, which showed that the construction of the LM thermal networks provided effective pathways for phonon transfer. Additionally, the prepared composites exhibited outstanding electromagnetic interference shielding performance with a shielding effectiveness of 32.11 dB corresponding to the blockage of 99.937% of the incoming radiation and a high conductivity of 25.64 S/m.

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来源期刊
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.
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