Carbon-Encapsulated Fe Nanoparticles Embedded in Organic Polypyrrole Polymer as a High Performance Microwave Absorber

被引：56
作者：
Jiang, Linwen [1 ,2 ]
Wang, Zhenhua [1 ,2 ]
Geng, Dianyu [1 ,2 ]
Wang, Yu [3 ]
An, Jing [3 ]
He, Jun [3 ]
Li, Da [1 ,2 ]
Liu, Wei [1 ,2 ]
Zhang, Zhidong [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
[2] Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
[3] Cent Iron & Steel Res Inst, Div Funct Mat Res, Beijing 100081, Peoples R China
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2016年 / 120卷 / 49期
关键词：
ABSORPTION PROPERTIES; FACILE SYNTHESIS; QUATERNARY NANOCOMPOSITES; DIELECTRIC-PROPERTIES; GRAPHENE; COMPOSITE; SHELL; NANOTUBES; SPHERE; FILMS;
D O I：
10.1021/acs.jpcc.6b09445
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：
In this study, highly effective organic-inorganic composites Fe/C/PPy (Fe/C nanocapsules embedded in polypyrrole) were prepared by combining the arc-discharge process and in situ oxidative polymerization method. It was found that Fe/C/PPy-paraffin composites have higher dielectric loss in comparison with both Fe/C-paraffin and PPy-paraffin composites, implying enhanced dielectric properties by this embedded structure. The RL (reflection loss) exceeding -10 dB is obtained in the 11.2-16.9 GHz for a given thickness of 2.2 mm, which covers most of the Ku-band (12-18 GHz). The RL exceeding 10 dB is obtained in the 9.6-14.1 GHz for a given thickness of 2.5 mm, which covers most of the X-band (8-12 GHz). The illustration of the physical model indicated that the special embedded structure with abundant heterogeneous interfaces is responsible for the excellent microwave-absorption performances.
引用
收藏
页码：28320 / 28329
页数：10
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