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  

Synergistic Effect of Carbon Nanotubes with Zinc Oxide Nanowires for Enhanced Electromagnetic Shielding Performance of Hybrid Carbon Fiber/Epoxy Composites

作　　者：马源 王函[1] 倪忠强 张建岗 张若南 孙新阳 李处森[1,2] 刘畅 曾尤[1,2] MA Yuan;WANG Han;NI Zhongqiang;ZHANG Jiangang;ZHANG Ruonan;SUN Xinyang;LI Chusen;LIU Chang;ZENG You(Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,China)

机构地区：[1]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 [2]中国科学技术大学材料科学与工程学院,沈阳110016

出　　处：《材料研究学报》2024年第1期61-70,共10页Chinese Journal of Materials Research

基　　金：国家自然科学基金(52130209,51802317);辽宁省自然科学基金(22-KF-12-04);纳米功能复合材料山西省重点实验室开放基金(NFCM202102);中国科学院金属所所创基金(2022-PY07);沈阳材料科学国家研究中心项目(2022-FP35);沈阳市科技计划项目(22-316-1-04)

摘　　要：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。Developing advanced composites with high electromagnetic shielding effectiveness is of great significance to ensure safety and reliability of electronic devices in complex electromagnetic environments.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 nanotubes(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.

关 键 词：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 

分 类 号：TB332[一般工业技术—材料科学与工程]