Microwave absorption properties of 3D cross-linked Fe/C porous nanofibers prepared by electrospinning

被引：283
作者：
Wang, Fengyi [1 ]
Sun, Yunqiang [1 ]
Li, Deren [1 ]
Zhong, Bo [2 ]
Wu, Zhiguo [1 ,3 ]
Zuo, Shiyong [1 ]
Yan, De [1 ]
Zhuo, Renfu [1 ]
Feng, Juanjuan [1 ]
Yan, Pengxun [1 ,3 ]
机构：
[1] Lanzhou Univ, Sch Phys Sci & Technol, Tianshui Rd, Lanzhou 730000, Peoples R China
[2] Harbin Inst Technol Weihai, Sch Mat Sci & Engn, Weihai 264209, Peoples R China
[3] Gansu Acad Sci, Inst Nanomat Applicat Technol, Dingxi Rd, Lanzhou 730000, Peoples R China
来源：
CARBON | 2018年 / 134卷
基金：
中国国家自然科学基金;
关键词：
CARBON NANOTUBES; ELECTROMAGNETIC PROPERTIES; GRAPHENE; NANOPARTICLES; LIGHTWEIGHT; SHELL; NANOCOMPOSITES; ENHANCEMENT; NICKEL; OXIDE;
D O I：
10.1016/j.carbon.2018.03.081
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Well dispersed core/shell structure Fe nanopowders (FeNPs) produced by high energy ion beam evaporation (HEIBE) are added to polyacrylonitrile/N, N-Dimethylformamide (PAN/DMF) solution containing vegetable oil to prepare Fe/C porous nanofibers (FeCPNFs) by electrospinning as electromagnetic microwave absorption material. The FeCPNFs have 3D cross-linked network structure with low graphitization degree. The permittivity and permeability behaviors of the composites made from FeCPNFs and wax are studied in the frequency range of 2.00-18.00 GHz. Mainly due to impedance matching, electric loss, magnetic loss, attenuation constant and "geometrical effect" the FeCPNFs have good microwave absorption properties. The reflection loss (RL) of FeCPNFs can reach -56.6 dB at matching frequency (4.96 GHz) and matching thickness (4.29 mm). The RL value can also reach -26.1 dB at 11.68 GHz, and effective absorption bandwidth (RL <= - 10.0 dB) is 3.00 GHz with a thickness of 2.00 mm. Moreover, under the matching frequency and matching thickness a good absorption performance (RL <= - 15.0 dB) from 2.00 GHz to 18.00 GHz is obtained. (C) 2018 Published by Elsevier Ltd.
引用
收藏
页码：264 / 273
页数：10
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