Kezhi Li, Chuang Wang, Hejun Li, Lingjun Guo, and Jihua Lu, Effect of chemical vapor infiltration treatment on the wave-absorbing performance of carbon fiber/cement composites, J. Univ. Sci. Technol. Beijing, 15(2008), No. 6, pp. 808-815. https://doi.org/10.1016/S1005-8850(08)60292-3
Cite this article as:
Kezhi Li, Chuang Wang, Hejun Li, Lingjun Guo, and Jihua Lu, Effect of chemical vapor infiltration treatment on the wave-absorbing performance of carbon fiber/cement composites, J. Univ. Sci. Technol. Beijing, 15(2008), No. 6, pp. 808-815. https://doi.org/10.1016/S1005-8850(08)60292-3
Kezhi Li, Chuang Wang, Hejun Li, Lingjun Guo, and Jihua Lu, Effect of chemical vapor infiltration treatment on the wave-absorbing performance of carbon fiber/cement composites, J. Univ. Sci. Technol. Beijing, 15(2008), No. 6, pp. 808-815. https://doi.org/10.1016/S1005-8850(08)60292-3
Citation:
Kezhi Li, Chuang Wang, Hejun Li, Lingjun Guo, and Jihua Lu, Effect of chemical vapor infiltration treatment on the wave-absorbing performance of carbon fiber/cement composites, J. Univ. Sci. Technol. Beijing, 15(2008), No. 6, pp. 808-815. https://doi.org/10.1016/S1005-8850(08)60292-3
Short carbon fibers were treated at high temperatures around 1100℃ through chemical vapor infiltration technology. A thinner layer ofpyrocarbon was deposited on the fiber surface. The dispersion of carbon fibers in a cement matrix and the mechanical properties of carbon fiber/cement composites were investigated by scanning electron microscopy (SEM) and other tests. The reflec- tivity of electromagnetic waves by the composites was measured in the frequency range of 8.0-18 GHz for different carbon fiber contents of 0.2wt%, 0.4wt%, 0.6wt%, and 1.0wt%. The results show that the reflectivity tends to increase with the increase of fiber content above 0.4wt%. The minimum reflectivity is -19.3 dB and the composites exhibit wave-absorbing performances. After pyrocarbon is deposited on the fiber, all the refiectivity data are far greater. They are all above -10 dB and display mainly wave-reflecting performances.
Short carbon fibers were treated at high temperatures around 1100℃ through chemical vapor infiltration technology. A thinner layer ofpyrocarbon was deposited on the fiber surface. The dispersion of carbon fibers in a cement matrix and the mechanical properties of carbon fiber/cement composites were investigated by scanning electron microscopy (SEM) and other tests. The reflec- tivity of electromagnetic waves by the composites was measured in the frequency range of 8.0-18 GHz for different carbon fiber contents of 0.2wt%, 0.4wt%, 0.6wt%, and 1.0wt%. The results show that the reflectivity tends to increase with the increase of fiber content above 0.4wt%. The minimum reflectivity is -19.3 dB and the composites exhibit wave-absorbing performances. After pyrocarbon is deposited on the fiber, all the refiectivity data are far greater. They are all above -10 dB and display mainly wave-reflecting performances.
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