Fluorination effects of MWCNT additives for EMI shielding efficiency by developed conductive network in epoxy complex |
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| Authors: | Ji Sun Im In Jun Park Se Jin In Taejin Kim Young-Seak Lee |
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| Institution: | aDepartment of Fine Chemical Engineering and Applied Chemistry, BK21-E2M, Chungnam National University, Daejeon 305-764, Republic of Korea;bBiorefinery Research Center, Korea Research Institute of Chemical Technology, Daejeon 305-343, Republic of Korea;cDepartment of Fire and Disaster Protection Engineering, Woosong University, Daejeon 300-718, Republic of Korea;dCore Technology Research Center for Fuel Cell, Jeollabuk-do 561-844, Republic of Korea |
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| Abstract: | To improve the efficiency in shielding electromagnetic interference in electronic devices, multi-walled carbon nanotubes were used, due to their excellent electric and magnetic properties at high aspect ratios, and were added to an epoxy matrix. Fluorination was carried out to achieve excellent dispersion and adhesion of the additives in the epoxy matrix. The improved dispersion was confirmed by UV spectra. The permittivity and permeability were also significantly improved based on the effects of the additives and the fluorination treatment. The efficiency of shielding electromagnetic interference increased up to 28 dB. This improved efficiency of shielding electromagnetic interference may be caused by a well-organized conductive network of additives in epoxy. |
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| Keywords: | Fluorination CNT Epoxy EMI shielding |
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