전도성 그리드를 활용한 전자파 흡수차폐/방열 복합소재 필름
A Conductive-grid based EMI Shielding Composite Film with a High Heat Dissipation Characteristic
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초록
무선통신기술의 발전과 함께 통신기기의 활용영역은 기하급수적으로 증가하고 있으며, 이에 따라 통신기기 성능의 저하를 막기 위한 전자파 노이즈 간섭문제 해결 및 방열문제 해결 소재에 대한 관심이 높아지고 있다. 본 연구에서는 전자파 차폐와 우수한 방열특성을 동시에 가질 수 있는 복합소재 필름을 제안하였다. 이 필름은 고분자 수지에 자성 및 방열 필러 물질이 분산된 복합소재 레이어와 전도성 그리드로 구성되어 있다. 복합소재 레이어의 조성 및 특성에 대한 제어 및 전도성 그리드 형상에 대한 설계를 통해 높은 전자파 차폐능(>40 dB), 낮은 전자파 반사능(<3 dB), 우수한 열전도도(>10 W/m·K)를 5G 통신 대역인 26.5 GHz에서 500 μm 이하의 극박 필름으로 달성하는 데 성공하였다.
Abstract
Due to the increasing number of wireless communication devices in mmWave frequency bands, there is a high demand for electromagnetic interference (EMI) shielding and heat dissipating materials to avoid device malfunctions. This paper proposes an EMI shielding composite film with a high heat dissipation characteristic. To achieve this, a conductive grid is integrated with a polymer-based composite layer including magnetic and heat dissipating filler materials. A high shielding effectiveness (>40 dB), low reflection shielding effectiveness (<3 dB), high thermal conductivity (>10 W/m·K), thin thickness (<500 μm) are simultaneously achieved with a tailored design of composite layer compositions and grid geometries in 5G communication band of 26.5 GHz.
참고문헌 (25)
- Shui, X., "Nickel Filament Polymer-matrix Composites with Low Surface Impedance and High Electromagnetic Interference Shielding Effectiveness", Journal of Electronic Materials, 26(8), pp.928~934 (1997)
- Hu, Y., "Carbon Nanotube Buckypaper and Buckypaper", polypropylene Composites for High Shielding Effectiveness and Absorption-dominated Shielding Material, 2019, pp.181, 107699~
- Hu, M., "Flexible Transparent PES", Silver Nanowires, Langmuir, pp.2012, 28(18)[DOI]
- Zhang, M., "Stretchable Liquid Metal Electromagnetic Interference Shielding Coating Materials with Superior Effectiveness", Journal of Materials Chemistry C, 7(33), pp.10331~10337 (2019)
- Wanasinghe, D., "A Review on Recent Advancement of Electromagnetic Interference Shielding Novel Metallic Materials and Processes", Composites Part B : Engineering, 176, pp.107207~ (2019)
- Zhang, N., "Lightweight and Flexible Ni-Co Alloy Nanoparticle-coated Electrospun Polymer Nanofiber Hybrid Membranes for Highperformance Electromagnetic Interference Shielding", Journal of Alloys and Compounds, 784, pp.244~255 (2019)
- Wang, H., "Highly Transparent and Broadband Electromagnetic Interference Shielding Based on Ultrathin Doped Ag and Conducting Oxides Hybrid Film Structures", ACS Applied Materials & Interfaces, 11(12), pp.11782~11791 (2019)
- 최재령, "FeCo 자성 금속 중공형 섬유 고분자 복합재의 전자파 차폐 특성 연구", Composites Research, 28(6), pp.333~339 (2015), 한국복합재료학회
- Liu, R., "Ultrathin Biomimetic Polymeric Ti3C2Tx MXene Composite Films for Electromagnetic Interference Shielding", ACS Applied Materials & Interfaces, 10(51), pp.44787~44795 (2018)
- Nguyen, V. -T., "MXene(Ti3C2TX)", graphene, Chemical Engineering Journal, pp.2020, 393[DOI]
- Liu, C., "Lightweight and High-performance Electromagnetic Radiation Shielding Composites Based on a Surface Coating of Cu@Ag Nanoflakes on a Leather Matrix", Journal of Materials Chemistry C, 4(5), pp.914~920 (2016)
- Al-Saleh, M. H., "Electromagnetic Interference(EMI)Shielding Effectiveness of PP", PS Polymer Blends Containing High Structure Carbon Black, 2008, pp.293(7), 621~630
- Yousefi, N., "Highly Aligned Graphene", Polymer Nanocomposites with Excellent Dielectric Properties for High-Performance Electromagnetic Interference Shielding, 2014, pp.26(31), 5480~5487
- 문재정, "고효율 전자파 차폐를 위한 이종금속 코팅 탄소섬유 개발", Composites Research, 33(4), pp.191~197 (2020), 한국복합재료학회[DOI]
- 이균배, "분산제에 따른 자성금속 무전해도금 기반 그래핀 분산 특성 및복합재의 전자파 차폐 특성 연구", Composites Research, 31(3), pp.111~116 (2018), 한국복합재료학회
- Xu, Y., "Gradient Structure Design of Flexible Waterborne Polyurethane Conductive Films for Ultraefficient Electromagnetic Shielding with Low Reflection Characteristic", ACS Applied Materials & Interfaces, 10, pp.19143~19152 (2018)
- Biswas, S., "Absorption-dominated Electromagnetic Wave Suppressor Derived from Ferrite-doped Cross-linked Graphene Framework and Conducting Carbon", ACS Applied Materials & Interfaces, 9, pp.3030~3039 (2017)
- Li, Y., "Multifunctional BiFeO3 Composites : Absorption Attenuation Dominated Effective Electromagnetic Interference Shielding and Electromagnetic Absorption Induced by Multiple Dielectric and Magnetic Relaxations", Composites Science and Technology, 159, pp.240~250 (2018)
- Liu, X., "Separation of Gold Nanowires and Nanoparticles Through a Facile Process of Centrifugation", Separation and Purification Technology, 192, pp.1~4 (2018)
- Ryu, S. H., "Absorption-dominant, Low Reflection EMI Shielding Materials with Integrated Metal Mesh", TPU, Chemical Engineering Journal, pp.2022, 428[DOI]
- Ryu S. H., "Electromagnetic Wave Shielding Flexible Films with Near-Zero Reflection in the 5G Frequency Band", Journal of Materials Chemistry A, 10, pp.4446~4455 (2022)
- Wang, T., "Reflection Loss Mechanism of Single Layer Absorber for Flakeshaped Carbonyl-iron Particle Composite", Journal of Applied Physics, 112(10), pp.104903~ (2012)
- Zhang, G., "A Percolation Model of Thermal Conductivity for Filled Polymer Composites", Journal of Composite Materials, 4(8), pp.963~970 (2010)
- Nicolson, A. M., "Measurement of the Intrinsic Properties of Materials by Time-Domain Techniques", IEEE Transactions on Instrumentation and Measurement, 19(4), pp.377~382 (1970)
- Terada, Y., "Thermal Conductivity in Nickel Solid Solutions", Journal of Applied Physics, 81, pp.2263~2268 (1997)
