산화철이 첨가된 실리콘 고무 복합체의 전자파 차폐 성능과 열적 특성

황소산; 정현우; 김용하; 진성훈; 천영걸; 심상은; Sosan Hwang; Hyeon Woo Jeong; Yongha Kim; Sung Hoon Jin; Yingjie Qian; Sang Eun Shim

Polymer(Korea), Vol.45, No.2, 200-209, March, 2021

DOI10.7317/pk.2021.45.2.200 Export Citation

산화철이 첨가된 실리콘 고무 복합체의 전자파 차폐 성능과 열적 특성

Electromagnetic Interference Shielding Effectiveness and Thermal Properties of Silicone Rubber Composites Filled with Ferric Oxides

황소산, 정현우, 김용하, 진성훈, 천영걸, 심상은 ^†

인하대학교 화학 및 화학공학 융합 대학원 스마트 에너지 소재 및 공정 교육연구단

Sosan Hwang, Hyeon Woo Jeong, Yongha Kim, Sung Hoon Jin, Yingjie Qian, and Sang Eun Shim^†

Department of Chemistry and Chemical Engineering, Education and Research Center for Smart Energy and Materials, Inha University, Incheon 22212, Korea

E-mail:

초록

본 연구에서는 제철과정에서 부산물로 발생하는 black ferric oxide(BFO), yellow ferric oxyhydroxide(YFO) 및 red ferric oxide(RFO) 산화철을 충전한 실리콘 고무 복합체의 전자파 차폐 성능 및 열적 특성을 분석하였다. BFO 는 자성에 의해 전자파를 흡수할 수 있으며 YFO는 결정구조 사이의 물 분자에 의해 전자파를 흡수할 수 있다. 이는 vector network analyzer(VNA)를 통한 전자파 차폐 성능 분석과 Nichlson-Ross-Wier(NRW) 식으로 계산한 복소유전율, 복소 투자율로 확인하였다. 전자주사현미경과 입도분석기를 통해 산화철 입자의 크기를 확인하였고 열중량 분석기와 X선 회절 분석법, 열전도도 분석을 통해 산화철을 충전한 실리콘 고무 복합체의 열적 특성을 확인하였다. BFO를 충전한 실리콘 고무는 전자파 차폐 성능이 가장 높으며 RFO를 충전한 실리콘 고무는 열전도도와 열적 안정성이 가장 우수하였다.

In this study, the electromagnetic interference shielding effectiveness and thermal properties of silicone rubber composites filled with various ferric oxides produced as by-products during a steel manufacturing process were analyzed. Black ferric oxide (BFO) can absorb electromagnetic waves by magnetism, and yellow ferric oxyhydroxide (YFO) can absorb electromagnetic waves by water molecules between crystal structures. This was confirmed by electromagnetic interference shielding effectiveness (EMI SE) analysis through a vector network analyzer (VNA) and complex permittivity and complex permeability calculated by Nichlson-Ross-Wier (NRW) equation. The size of the iron oxide particles was confirmed through SEM and particle size analyzer, and thermal properties of the silicone rubber composite filled with ferric oxides were confirmed through TGA, XRD, and thermal conductivity analysis. Silicone rubber composite filled with BFO has the highest EMI SE and the composite filled with red ferric oxide (RFO) has the best thermal conductivity and thermal stability.

Keywords:silicone rubber;ferric oxide;electromagnetic interference shielding;thermal conductivity

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[2] Dang ZM, Zhou T, Yao SH, Yuan JK, Zha JW, Song HT, Li JY, Chen Q, Yang WT, Bai J, Adv. Mater., 21(20), 2077 (2009)

[3] Chen ZP, Xu C, Ma CQ, Ren WC, Cheng HM, Adv. Mater., 25(9), 1296 (2013)

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[8] Chu CW, Ouyang J, Tseng HH, Yang Y, Adv. Mater., 17(11), 1440 (2005)

[9] Xiang C, Pan Y, Liu X, Sun X, Shi X, Guo J, Appl. Phys. Lett., 87, 123103 (2005)

[10] Joo J, Epstein A, Appl. Phys. Lett., 65, 2278 (1994)

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[12] Hamdani S, Longuet C, Perrin D, Lopez-Cuesta J, Ganachaud F, Polym. Degrad. Stabil., 94, 465 (2009)

[13] Zhuo J, Dong J, Jiao C, Chen X, Plast. Rubber Compos., 42, 239 (2003)

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[22] Tuz VR, Novitsky DV, Mladyonov PL, Prosvirnin SL, Novitsky AV, JOSA B, 31, 2095 (2014)

[23] Chen X, Grzegorczyk TM, Wu B, Pacheco JJ, Kong JA, Phys. Rev. E, 70, 016608 (2004)

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[25] Weir WB, Proc. IEEE, 62, 33 (1974)

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