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The electromagnetic wave absorbing properties of cement-based composites using natural magnetite powders as absorber
This content has been downloaded from IOPscience. Please scroll down to see the full text. 2017 Mater. Res. Express 4 056103 (http://iopscience.iop.org/2053-1591/4/5/056103) View the table of contents for this issue, or go to the journal homepage for more Download details: IP Address: 113.140.77.25 This content was downloaded on 19/05/2017 at 03:28 Please note that terms and conditions apply.
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Mater. Res. Express 4 (2017) 056103
https://doi.org/10.1088/2053-1591/aa7025
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The electromagnetic wave absorbing properties of cement-based composites using natural magnetite powders as absorber
3 March 2017 RE VISED
21 April 2017 ACCEP TED FOR PUBLICATION
28 April 2017 PUBLISHED
16 May 2017
Bowen Guan1, Donghai Ding2, LeFan Wang1,3, Jiayu Wu1 and Rui Xiong1 1
School of Materials Science and Engineering, Chang’an University, Xi’an, Shaanxi 710061, People’s Republic of China College of Materials and Mineral Resources, Xi’an University of Architecture and Technology, Xi’an, Shaanxi 710055, People’s Republic of China 3 Department of Airport Engineering and Architecture, Air Force Engineering University, Xi’an, 710038, People’s Republic of China 2
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Keywords: dielectric properties, magnetic properties, electromagnetic wave absorbing
Abstract In order to develop a low-cost electromagnetic interference shielding and especially absorbing cement materials. In the present study, the utilization of natural magnetite in cement matrix for this purpose was investigated. The dielectric, magnetic and electromagnetic wave absorbing properties of magnetite/cement composites were characterized in the frequency range of 2.6–3.95 GHz (S band). The results show that dielectric and magnetic losses of the composites were increased, and the performance of the composites in electromagnetic absorbing is greatly improved greatly by adding natural magnetite powders as low-cost absorbers. For magnetite/composites, two matching thickness in range of 1–30 mm were clearly observed. The composites with 15% magnetite show the best absorbing property. Its strongest absorbing peak with a reflection loss of −28 dB at 3.7 GHz, and its absorbing bandwidth (
