Electromagnetic Interference Shielding Effectiveness of Fiber Reinforced Composites Hybrid Conductive Filler

J. Ocean Eng. Technol. 2009;23(3):35-39.

Han Gil-Young,Song Dong-Han,Bae Ji-Soo

Department of Mechanical Engineering Chosun University,Department of Mechanical Engineering Graduate School Chosun University,Department of Mechanical Engineering Graduate School Chosun University

하이브리드 전도성 Filler 섬유강화 복합재료의 전자파 차폐효과

한길영,송동한,배지수

조선대학교 기계공학과,조선대학교 대학원 기계공학과,조선대학교 대학원 기계공학과

Keywords: Electromagnetic interference (EMI), Shielding effectiveness (SE), Fine copper mesh, General copper mesh

핵심용어: 전자파 간섭, 차폐 효과, 고개구율 구리메쉬, 범용 구리메쉬

Abstract

The main objective of this study was to investigate fiber reinforced composite materials (FRCM) with electromagnetic shielding characteristics using aluminum (Al) film and copper (Cu) meshes. This study investigated the electromagnetic interference (EMI) shielding effectiveness (SE) of fiber reinforced composites filled with Al film, Cu meshes, and nano carbon black as hybrid conductive fillers to provide the electromagnetic shielding property of the fiber reinforced composites. The coaxial transmission line method of ASTM D 4935-89 was used to measure the EMI shielding effectiveness of composites in the frequency range of 300 MHz to 1.5 GHz. The variations of SE of FRCM with Al film, fine Cu, and general Cu meshes are described. The results indicate that the FRCM having Al film exhibited up to 75 dB of SE at 1.5 GHz.