[논문]탄소 복합재 기반 전자파 차폐 및 고방열 일체형 필름 연구동향

박성현; 김명훈; 김광석

doi:10.6117/kmeps.2021.28.4.001

[국내논문] 탄소 복합재 기반 전자파 차폐 및 고방열 일체형 필름 연구동향
Research Trends of Carbon Composite Film with Electromagnetic Interference Shielding and High Heat Dissipation 원문보기

마이크로전자 및 패키징 학회지 = Journal of the Microelectronics and Packaging Society, v.28 no.4, 2021년, pp.1 - 10

박성현 (한국생산기술연구원 탄소경량소재응용연구그룹) , 김명훈 (한국생산기술연구원 탄소경량소재응용연구그룹) , 김광석 (한국생산기술연구원 탄소경량소재응용연구그룹)

초록
AI-Helper

최근 전자 부품의 소형화, 고집적화가 진행되고 있으며, 소형화된 전자기기는 작은 면적과 얇은 두께로 전자파 간섭 및 발열문제를 해결해야 한다. 그래핀(Graphene) 복합재와 그라파이트(Graphite) 복합재는 가벼우면서도 우수한 전기 전도성과 열전도도로 전자파 차폐와 방열 문제를 해결할 수 있는 소재이다. 최근 합성 기술과 복합재 제조기술이 발전함에 따라 그래핀과 그라파이트 복합재를 다양한 분야에 적용하기 위한 연구들이 진행되고 있으며, 본 연구에서는 그래핀과 그라파이트를 이용하여 전자파 차폐 및 방열 특성을 동시에 가지는 복합재 필름을 제안한 최근 연구를 알아보고자 한다.

Abstract ▼ AI-Helper

Recently, electronic components are becoming smaller and highly integrated. As a result, electromagnetic interference (EMI) and heat generation problems must be solved simultaneously with a small area and thickness. Graphene composites and graphite composites are lightweight materials that can simultaneously solve EMI shielding and heat dissipation problems with excellent electrical and thermal conductivity. With the recent development of synthetic technology and composite manufacturing technology, the research to application of their composites is increasing. In this paper, we reviewed the latest researches on composite films of graphene and graphite for EMI shielding and heat dissipation.

주제어

표/그림 (19)

그림 Fig. 1. (a) Electrical conductivity, (b) Thermal conductivity, (c) Density, and (d) EMI shielding performance of GF (graphene film) and GCF (graphene/CNT film).¹⁷⁾
그림 Fig. 2. (a) Mechanism of the filling effect of CNTs to graphene sheets. (b) Mechanism of the bridging effect of CNTs to graphene sheets.¹⁷⁾
그림 Fig. 4. (a) Electrical conductivity and (b) EMI shielding effectiveness of the graphene/CNT films.¹⁸⁾
그림 Fig. 3. Thermal conductivity of the rGC-1000 (1,000 °C reduced graphene/CNTs film), rGC-1600 (1,600 °C reduced graphene/ CNTs film), gGC-2800 (2,800 °C graphitized graphene/ CNTs film) and gC-2800 (2,800 °C graphitized graphene film).¹⁸⁾
그림 Fig. 6. EMI shielding efficiency of Cu foil, LG film, and Cu/LG film at (a) L-band, S-band, C-band, (b) X-band, and (c) Ku-band.¹⁹⁾
그림 Fig. 5. (a) Electrical conductivity and (b) in-plane thermal conductivity of different graphene(or graphite) film or paper, and (c) infrared thermal photographs of various films, and (d) optical image on the back of a smart phone, and (e-g) surface elevated temperature of smart phone with various films.¹⁹⁾
그림 Fig. 7. Schematic illustration of the synthesis and in-situ functionization of graphene and further casting into functional films through electrochemical exfoliation of graphite in aqueous Fe₂(SO₄)₃.²⁰⁾
그림 Fig. 8. EMI shielding efficiency of (a) graphene and Fe₃O₄/ graphene film and (b) Fe₃O₄/graphene films with different Fe₃O₄ contents.²⁰⁾
그림 Fig. 9. The preparing process of reduced graphene oxide/nickel (RGN) paper.²¹⁾
그림 Fig. 10. EMI shielding effectiveness of (a) flat nickel foam, (b) reduced graphene oxide-nickel paper and (c) RGN paper after repeated bending for 1,000 cycles at a strain of 80%.²¹⁾
그림 Fig. 11. (a) Electrical conductivity of expanded graphite films obtained from different oxidation ratios, and (b) thermal conductivity of various films.²²⁾
그림 Fig. 12. (a) EMI shielding properties at X-band with different film thickness, and (b) SEA, SER and SETOTAL at the frequency of 10.3 GHz and the corresponding EMI coefficients of R, A and T, and (c) the result of direct folding test of expanded graphite film.²²⁾
그림 Fig. 13. (a) Stress-strain curves, (b) Tensile strength and toughness of EG, EG/HANF, HANF films.²³⁾
그림 Fig. 14. Schematic diagram of foldable and stretchable HANF between expanded graphite sheets.²³⁾
그림 Fig. 16. In-plane thermal diffusivity and thermal conductivity of EG, EG/HANF, HANF films.²³⁾
그림 Fig. 18. Stress-strain curves of (a) EG/GO films, (b) EG/GE, and (c) Elongation at break and (d) tensile strength of EG/GO, EG/GE, GNS/GO(graphene nano sheet/graphene oxide), GNS/GE(reduced graphene nano sheet/graphene oxide) films.²⁴⁾
그림 Fig. 17. Photographical image of EG film, expanded graphite/2 wt.%-graphene oxide (EG/GO-2) film and reduced expanded graphite/2 wt.% graphene oxide (EG/GE-2) film.²⁴⁾
그림 Fig. 15. (a) Electric conductivity and (b) EMI shielding effectiveness of EG, EG/HANF, HANF films at X-band.²³⁾
그림 Fig. 19. (a) Electric conductivity and (b) In-plane thermal conductivity of reduced expanded graphite films with different size of graphene oxide. (c) EMI shielding in the frequency range of 8.2-12.4 GHz (43 ± 3 mm). Stress-strain curves of (d) expanded graphite films and (e) reduced expanded graphite films with different size of graphene oxide.²⁴⁾

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저자의 다른 논문 :

표제어: PCR

동의어: Packet Collision Rate

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