Lightweight Polyaniline-Cobalt Coated Fly Ash Cenosphere Composite Film for Electromagnetic Interference Shielding

Pritom J Bora; K. J. Vinoy; Praveen C Ramamurthy; Kishore; Giridhar Madras

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자료유형: 학술저널

저자정보: Pritom J Bora (Indian Institute of Science) K. J. Vinoy (Indian Institute of Science) Praveen C Ramamurthy (Indian Institute of Science) Kishore (Indian Institute of Science) Giridhar Madras (Indian Institute of Science)

저널정보: 대한금속·재료학회 Electronic Materials Letters Electronic Materials Letters Vol.12 No.5

발행연도: 2016.1

수록면: 603 - 609 (7page)

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Thermal power plant’s solid environmental waste fly ashcenosphere (FAC) is cobalt coated chemically and functionalizedby in situ synthesis of polyaniline (PANI) under nitrogenatmosphere at −30 ± 2 °C and characterized by various techniques. The electromagnetic interference shielding effectiveness (EMISE) of free standing PANI/Co-FAC (PCC) films prepared bysolution casting indicates an appreciable shielding. The mosteffective average EMI SE of ~ 30 dB was obtained for 89 ± 3 μmthicker flexible film over the frequency range of 12.4-18 GHz(Ku-band). Mechanistically, EMI shielding due to absorption wasfound to be dominant. The obtained shielding effectiveness dueto absorbance (SEA) of PCC film is nearly two times higher thanPC film. The microwave conductivity (σ) of PCC film (157-184Sm−1) is much higher than PC film (118-142 Sm−1). Moreover, thehigh EM attenuation constant (α) value of PCC film indicatesexcellent suitability of EMI shielding due to absorption.

참고문헌 (38)

참고문헌 신청

M. H. Al-Saleh / 2013 / Carbon 60:146

X. C. Tong / 2008 / Advanced Materials and Design for Electro-magnetic Interference Shielding / CRC Press

임준희 / 2015 / Dual-Band Microwave Absorption Properties of Metamaterial Absorber Composed of Split Ring Resonator on Carbonyl Iron Powder Composites / Electronic Materials Letters 11(3):447~451

K. J. Vinoy / 2011 / Radar Absorbing Materials:from Theory to Design and Characterization / Springer US

D. D. L. Chung / 2012 / Carbon 50:3342

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