Greatly enhanced microwave absorption properties of highly oriented flake carbonyl iron/epoxy resin composites under applied magnetic field

2016 ◽  
Vol 52 (4) ◽  
pp. 2373-2383 ◽  
Author(s):  
Dandan Min ◽  
Wancheng Zhou ◽  
Yuchang Qing ◽  
Fa Luo ◽  
Dongmei Zhu
Keyword(s):  
Magnetic Field ◽  
Epoxy Resin ◽  
Microwave Absorption ◽  
Applied Magnetic Field ◽  
Carbonyl Iron ◽  
Resin Composites ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Epoxy Resin Composites

scholarly journals Influence of External Magnetic Field on the Microwave Absorption Properties of Carbonyl Iron and Polychloroprene Composites Film

2016 ◽  
Author(s):  
Haiyan Wang ◽  
Xueai Li
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Microwave Absorption ◽  
Reflection Loss ◽  
Carbonyl Iron ◽  
Magnetic Particles ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Line Theory ◽  
Composites Film

The carbonyl iron particles were dispersed in a polychloroprene rubber (CR) matrix under an external magnetic field for practical application as microwave absorption composites film. The film prepared under external magnetic field with a thickness of only 0.54 mm showed least reflection loss of -15.98 dB and the reflection loss value less than -10.0 dB over the frequency range of 11.4~14.8 GHz. In comparison with the microwave absorption properties of calculation by transmission line theory based on the tested relative complex permittivity and permeability and film prepared by general route without external magnetic field, the film made with external magnetic field exhibited more excellent microwave absorption properties, strongly depending on the increment of anisotropy and rearrangement of magnetic particles. The results indicated the composite film made under external magnetic field have excellent microwave absorption properties, which suggest that the composites thin film could be used as a thinner and lighter microwave absorber.

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