A novel structure of woven continuous-carbon fiber composites with high electromagnetic shielding |
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Authors: | Wern Shiarng Jou |
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Affiliation: | (1) Department of Mold and Die Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung, Taiwan 807, Republic of China |
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Abstract: | A novel structure employing the woven continuous-carbon fiber (CCF) epoxy composite with high electromagnetic (EM) shielding
is presented experimentally and theoretically. The influences of weave type, number, and angle of overlapped plates upon the
shielding effectiveness (SE) of the woven CCF-epoxy composite are investigated. The minimum SE of the single, double, and
triple-plain or balanced-twill woven CCF-composite plates was measured to be as high as 50 dB, 60 dB, and 70 dB, respectively.
More than 100 dB in SE was obtained for the triple-overlapped, plain-weave CCF composite at a frequency of 0.9 GHz. The weight
percentage of the single CCF-composite plate required for electronic application is 4.8% only, which is less than one quarter
of the CF content, and the performance in SE is 10 dB higher in comparison with long, CF-filled, liquid-crystal polymer (LCP)
composites. The SE calculated theoretically is consistent with that measured by the experiment. |
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Keywords: | Electromagnetic shielding shielding effectiveness continuous carbon fiber unidirection plain weave balanced-twill weave epoxy composites |
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