Comparison Analysis of Absorption Properties for Microwave Absorbent

Abstract:

In order to compare the absorbing properties of different microwave-absorbing agents and their mixture, this paper has selected two typical microwave-absorbing agents which respectively are carbon fiber resistance microwave-absorbing agents and ferrite magnetism microwave-absorbing agents, and took them as monolayer absorbing materials. Then used MG formula to calculate the effective electromagnetic parameter of their mixture under different proportion at X band, and finally analyzed their absorbing properties separately. Then through contrasting the impedance matching characteristic and attenuation coefficient of the materials, it is proved that adding carbon fiber in ferrite can not improve absorption properties. Although the ability of attenuating electromagnetic wave would be enhanced when resistance materials and magnetism materials are blend with each other, doping will destroy the materials’ impedance matching characteristic because most resistance materials have high permittivity. It makes reflection strengthen and can not improve absorbing properties.

• Periodical: Key Engineering Materials (Volumes 512-515)
• Pages: 1132-1135
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.512-515.1132
• Online since: June 2012
• Authors: Xu Liang Lü, Chao Wu, Zhao Yang Zeng
• Keywords: Absorbing Materials, EM Parameter, Maxwell-Garnett Theory, Microwave Absorbent

References

[1] Q. Qiu, Y.G. Zhang, X. Zhang, Research progress of microwave absorption Materials, Electronic Components and Materials. 28 (2009) 78-81.

[2] C. Wang, J.L. Gu, F.Y. Kang, Resarch in theoretical designs of microwave absorbing materials, Materials Review. 23 (2009) 5-8.

[3] M.S. Cao, Z.J. Gao, G.Z. Zou, Computation simulation of EM parameters of LDT-epoxy disperse systems, Journal of Aeronautical Materials. 24 (2004) 15-20.

[4] S.J. Ding, D.B. Ge, N. Shen, Numerical simulation of equivalent electromagnetic parameters of composite material, Acta Phys. Sin. 59 (2010) 943-948.

[5] J. Li, J.K. Kim, Percolation threshold of conducting polymer composites containing 3D randomly distributed graphite nanoplatelets, Compos. Sci. Technol. 67 (2007) 2114-2120.

DOI: 10.1016/j.compscitech.2006.11.010

[6] Y.X. Gan, C.Q. Chen, C.G. Li, Fabrication of composite containing MCF resonators and its electro-magnetic characteristics, Aeronautical Manufacturing Technology. 4 (1994) 10-12.

[7] Y.X. Zhang, R.L. Ding, T. Li, Study on hexagonal polycrystalline ferrite material with electron-wave absorbing, Journal of the Chinese Ceramic Society. 26 (1998) 275-280.

[8] K. Chao, Y.L. Liu, R.G. Yang, Combination of ant colony algorithm and microgenetic algorithm for multilayered radar absorbing coatings optimization, Journal of Functional Materials. 39 (2008) 1052-1055.

DOI: 10.1109/icmmt.2008.4540464