Enhancement of EMI shielding absorbing capacity of CNT cement composites by the addition of fly ash

I.W. Nam, H.K. Kim, H.K. Lee
Korea Advanced Institute of Technology, KR

Keywords: CNT, cement, fly ash, EMI shielding


As mentioned by the WHO in May 2011, electromagnetic fields can be possible carcinogenic to human when these electromagnetic fields from wireless phones are incident on human brains [1]. Metallic electromagnetic interference (EMI) shielding materials are inappropriate to be applied onto living environments due to their high electromagnetic wave reflection characteristics. Instead, carbon nanotube (CNT) has been used as an EMI shielding/absorbing material with strong microwave absorption properties in the GHz frequency range [2]. CNT added EMI shielding/absorbing materials are, thus, demanded to be developed for applications to the living environments.