Electromagnetic Wave Absorption Cement Based on Composited Absorbing Agent

Abstract:

To solve more and more serious electromagnetic radiations, electromagnetic wave absorption cement were prepared by introducing carbon black and glass fiber as composited absorbing reagent, wich can be useful in building anechoic chamber and other electromagnetic radiation protection to buildings. The results showed that the absorption properties were improved compared with single absorbing agent such as carbon or glass fiber. the lowest reflection loss of-11.3dB was obtained at 18 GHz of 5wt.% carbon black and 9wt.% glass fiber filled cement with thickness of 20mm. The increase of thickness separately can not improve the absorption properties.

• Periodical: Advanced Materials Research (Volume 1035)
• Pages: 520-523
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1035.520
• Online since: October 2014
• Authors: Ye Sun, Yue Fang Zhang, Wan Jun Hao
• Keywords: Composite Absorbing Agent, Concrete, Electromagnetic Wave Absorption

References

[1] Guan H T, Liu S H, Duan Y P, et al. Investigation of the electromagnetic characteristics of cement based composites filled with EPS, J. Cement & Concrete Cpmpoaites. 2007, 29(1): 49-54.

DOI: 10.1016/j.cemconcomp.2006.08.001

[2] Cengiz Duran Atis, Okan Karahan, Properties of steel fiber reinforced fly ash concrete, J. Constr. Build Mater. 23 (2009) 392–399.

[3] B. Li, Y. Duan, Y. Zhang, S. Liu. Electromagnetic wave absorption properties of cement-based composites filled with porous materials, J. Materials and Design, 2011, 32(5): 3017-3020.

DOI: 10.1016/j.matdes.2010.12.017

[4] Laukaitis A, Sinica M, Balevicius S, et al. Investigation of electromagnetic wave absorber based on carbon fiber reinforced aerated concrete using time-domain method, J. ACTA PHYSICA POLONICA A, 2008, 113(3): 1047-1050.

DOI: 10.12693/aphyspola.113.1047

[5] Fu W Y, Liu S K, Fan W H, et al. Hollow glass microspheres coated with CoFe2O4 and its microwave absorption property, J. Jouranl of Magnetism and Magnetic Materials, 2007, 316(1): 54-58.

DOI: 10.1016/j.jmmm.2007.03.201

[6] A. Oikonomou, T. Giannakopoulou, G. Litsardakis, Design, fabrication and characterization of hexagonal ferrite multi-layer microwave absorber, J. Magn. Magn. Mater, 316 (2007) 827–830.

DOI: 10.1016/j.jmmm.2007.03.114

[7] Meng W, Yuping D, Shunhua L, et al. Absorption properties of carbonyl-iron/carbon black double-layer microwave absorbers, J. Journal of Magnetism and Magnetic Materials, 2009, 321(20): 3442-3446.

DOI: 10.1016/j.jmmm.2009.06.040

[8] Li K Z, Wang C, Li H J, et al. Effect of chemical vapor infiltration treatment on the wave-absorbing performance of carbon fiber/cement composites, J. Jouranl of University and Technology Beijing, 2008, 15(6): 808-815.

DOI: 10.1016/s1005-8850(08)60292-3

[9] Yuefang Zhang, BaoYi Li, Shunhua Liu, Wanjun Hao. Electromagnetic Wave Absorption Properties and Mechanical Properties of Aramid Fiber Reinforced Cement, J. Advanced Materials Research 2012, 512-515: 2873-2877.

DOI: 10.4028/www.scientific.net/amr.512-515.2873

[10] S.M. Abbas, A.K. Dixit, R. Chatterjee, T.C. Goel, Complex permittivity and microwave absorption properties of BaTiO3–polyaniline composite, J. Mater. Sci. Eng. B-Adv. 123(2005) 167–171.

DOI: 10.1016/j.mseb.2005.07.018