Enhanced microwave absorption by arrayed carbon fibers and gradient dispersion of Fe nanoparticles in epoxy resin composites

IMR OpenIR

	Enhanced microwave absorption by arrayed carbon fibers and gradient dispersion of Fe nanoparticles in epoxy resin composites
	Shah, Asif; Ding, Ang; Wang, Yonghui; Zhang, Li; Wang, Dongxing; Muhammad, Javid; Huang, Hao; Duan, Yuping; Dong, Xinglong; Zhang, Zhidong; dongxl@dlut.edu.cn
	2016
发表期刊	CARBON
ISSN	0008-6223
卷号	96 页码:987-997
摘要	Influences of the arrayed carbon fibers (CFs) and gradiently dispersed Fe nanoparticles (NPs) inside epoxy resin (ER) matrix on the microwave absorption and mechanical properties were investigated. As a microwave absorbent, the Fe NPs were synthesized by an arc discharge plasma method and subsequently surface-modified by using of silane coupling agent (KH-550) to improve their dispersion in organic ER matrix. To measure the naturalistic electromagnetic and mechanical properties of such nanocomposite plates, a series of square plates (20 x 20 cm(2)) were fabricated by filling the modified Fe NPs (30 wt.%) with/without orientated CFs at different mass percentages (0, 1.38 wt.%, 2.76 wt.% and 5.52 wt.%) into the ER matrix. The excellent microwave absorption of nanocomposite plate occurred as the direction of CFs was vertical to that of incident microwave, in such case the multi-reflections of microwave were caused by CFs and favors to create a great absorption probability to Fe NPs. A well matched input impedance of the plate to air is necessary for the effective entrance of incident microwave and to be attenuated by the structural resonance and electromagnetic losses. The input impedance of nanocomposite plate is mainly determined by the content of absorbent (Fe NPs with a gradient dispersion), CFs (with orientations to incident microwave, i.e. vertical, parallel or perpendicularly cross-linked to each other) and the geometric configuration (sizes of the plate, distribution of each components, etc.). It was figured out that the nanocomposite plate (30 wt.% of Fe NPs, 5.52 wt.% of CFs vertical to incident microwave) exhibits a higher reflection loss (RL) of -26.8 dB at 4.9 GHz, in which the structural resonances, appropriate conductivity, dielectric polarization and impedance matching were involved. The effects of gradiently dispersed Fe NPs and the arrayed CFs with orientations on the electromagnetic and mechanical properties were emphasized and investigated. (C) 2015 Elsevier Ltd. All rights reserved.
部门归属	[shah, asif ; ding, ang ; wang, yonghui ; zhang, li ; wang, dongxing ; muhammad, javid ; huang, hao ; duan, yuping ; dong, xinglong] dalian univ technol, key lab mat modificat laser ion & electron beams, minist educ, dalian 116024, liaoning, peoples r china ; [shah, asif ; ding, ang ; wang, yonghui ; zhang, li ; wang, dongxing ; muhammad, javid ; huang, hao ; duan, yuping ; dong, xinglong] dalian univ technol, sch mat sci & engn, dalian 116024, liaoning, peoples r china ; [zhang, zhidong] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110015, liaoning, peoples r china ; [ding, ang] china acad ordnance sci, ningbo branch, ningbo 315103, zhejiang, peoples r china
资助者	National Natural Science Foundations of China [51331006, 51271044, 51171033]
收录类别	sci
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/74823
专题	中国科学院金属研究所
通讯作者	dongxl@dlut.edu.cn
推荐引用方式 GB/T 7714	Shah, Asif,Ding, Ang,Wang, Yonghui,et al. Enhanced microwave absorption by arrayed carbon fibers and gradient dispersion of Fe nanoparticles in epoxy resin composites[J]. CARBON,2016,96:987-997.
APA	Shah, Asif.,Ding, Ang.,Wang, Yonghui.,Zhang, Li.,Wang, Dongxing.,...&dongxl@dlut.edu.cn.(2016).Enhanced microwave absorption by arrayed carbon fibers and gradient dispersion of Fe nanoparticles in epoxy resin composites.CARBON,96,987-997.
MLA	Shah, Asif,et al."Enhanced microwave absorption by arrayed carbon fibers and gradient dispersion of Fe nanoparticles in epoxy resin composites".CARBON 96(2016):987-997.