首页|碳纳米管/氧化锌协同增强碳纤维复合材料的电磁屏蔽性能

碳纳米管/氧化锌协同增强碳纤维复合材料的电磁屏蔽性能

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在碳纤维上原位生长氧化锌纳米线、沉积碳纳米管薄膜,经叠层铺设和真空辅助树脂浸渍成型制备出叠层混杂碳纤维/环氧树脂复合材料,表征其微观结构并系统地研究了这种材料的电导率和电磁屏蔽性能.结果表明,这种复合材料(厚度为2 mm)在8.2～12.4 GHz波段的电磁屏蔽效能达到50 dB,比碳纤维复合材料提高了 51.52％.这种材料的优异性能,可归因于氧化锌纳米线的高效介电损耗、连续碳纳米管薄膜的高导电性、层间多组元界面的多重反射和高效吸收损耗.
Synergistic Effect of Carbon Nanotubes with Zinc Oxide Nanowires for Enhanced Electromagnetic Shielding Performance of Hybrid Carbon Fiber/Epoxy Composites
Developing advanced composites with high electromagnetic shielding effectiveness is of great significance to ensure safety and reliability of electronic devices in complex electromagnetic envi-ronments.We proposed a novel strategy to fabricate carbon fiber-based hybrid composites by in-situ growing zinc oxide(ZnO)nanowires onto carbon fiber(CF)and subsequently depositing carbon nano-tubes(CNT),and infiltrating epoxy(EP)into laminated layers through vacuum-assisted resin transfer molding technique.Microstructures,electrical conductivity,and electromagnetic shielding performance of the acquired CNT-ZnO-CF/EP hybrid composites were investigated in detail.The hybrid composites of 2 mm thickness exhibited excellent electromagnetic shielding performance,and their total electromagnetic shielding effectiveness was up to 50 dB in the 8.2～12.4 GHz band,increasing by 51.52％in comparison to the CF/EP composites.Such high performance is mainly attributed to the high dielectric loss of ZnO nanowires,high electrical conductivity of continuous CNT films,and multiple reflection/absorption losses between laminated structures and multi-component interfaces.This work paves a way for development of advanced composites with high-efficiency electromagnetic shielding and structure/function integration.

compositeselectromagnetic shielding performancelaminated hybrid structureszinc ox-ide nanowirescarbon nanotubes

马源、王函、倪忠强、张建岗、张若南、孙新阳、李处森、刘畅、曾尤

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中国科学院金属研究所沈阳材料科学国家研究中心 沈阳 110016

中国科学技术大学材料科学与工程学院 沈阳 110016

复合材料 电磁屏蔽性能 叠层混杂结构 氧化锌纳米线 碳纳米管

国家自然科学基金国家自然科学基金辽宁省自然科学基金纳米功能复合材料山西省重点实验室开放基金中国科学院金属所所创基金沈阳材料科学国家研究中心项目沈阳市科技计划项目

521302095180231722-KF-12-04NFCM2021022022-PY072022-FP3522-316-1-04

2024

10.11901/1005.3093.2023.158

材料研究学报
国家自然科学基金委员会 中国材料研究学会

材料研究学报

CSTPCD北大核心
影响因子：0.605
ISSN：1005-3093
年,卷(期)：2024.38(1)
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