石墨烯
材料科学
环氧树脂
电磁屏蔽
复合材料
纳米复合材料
氧化物
电磁干扰
热导率
数码产品
电磁干扰
纳米技术
电气工程
电信
计算机科学
工程类
冶金
作者
Liyuan Han,Kezhi Li,Yanqin Fu,Xuemin Yin,Yameng Jiao,Qiang Song
标识
DOI:10.1016/j.compscitech.2022.109407
摘要
Owing to the growing electromagnetic interference (EMI) shielding and heat removal issues in modern electronics, polymer composites with remarkable EMI shielding performance and thermal management capability have attached much attention. In this work, vertical edge-rich graphene (ERG) were in-situ grown on the reduced graphene oxide (rGO) aerogel skeleton, constructing a unique 3D hybridized carbon nanostructures with covalent bonding, which were applied to modify epoxy resin for EMI shielding and thermal management. Impressively, the obtained rGO-ERG/epoxy nanocomposites possessed an improved EMI shielding performance of 45.9 dB in the X-band, which mainly attributes to the structural defects and strong charge polarization ability of ERG. Furthermore, theoretical models qualitatively prove that the construction of phonon-matching 3D rGO-ERG networks results in efficient phonon transport, providing an enhanced thermal conductivity of 1.96 W m−1 K−1. Meanwhile, the 3D hybrid structure from total 2D ingredients which exhibits a remarkable thermal management capability is further corroborated. More importantly, this strategy endows rGO-ERG/epoxy nanocomposites comprehensive functions, providing a bright application prospect for next-generation electronic packing.
科研通智能强力驱动
Strongly Powered by AbleSci AI