X-band dielectric and microwave-absorbing properties of the incompletely carbonized polyacrylonitrile cloth

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[1] Huang, Zhibin
[2] Kang, Wenbo
[3] Tang, Xiufeng
[4] Qing, Yuchang
[5] Luo, Fa
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Huang, Z. (huangzhibin83@163.com) | 1600年 / John Wiley and Sons Inc卷 / 129期
关键词：
Incompletely carbonized polyacrylonitrile (PAN) cloths were prepared by heating stabilized PAN cloth at 600-800°C in different atmosphere. Their X-band dielectric and microwave-absorbing properties were investigated. Results showed that the complex permittivity constantly increased with the increasing heating temperature due to the growth of carbon sheets. Conversely; the cloths carbonized in air exhibit lower complex permittivity than those carbonized in nitrogen because the reaction with oxygen restricts the progress of carbonization. The reflection loss below -10 dB can be obtained in X band for the sample carbonized at 650°C for 2 h in air. Copyright © 2012 Wiley Periodicals; Inc;
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