Graphene oxide/ferrofluid/cement composites for electromagnetic interference shielding application
- 25 October 2011
- journal article
- Published by IOP Publishing in Nanotechnology
- Vol. 22 (46), 465701
- https://doi.org/10.1088/0957-4484/22/46/465701
Abstract
This paper deals with the preparation of graphene oxide-ferrofluid-cement nanocomposites to evaluate the electromagnetic interference (EMI) shielding effectiveness (SE) in the 8.2-12.4 GHz frequency range. It has been observed that incorporation of graphene oxide (30 wt%) along with an appropriate amount of ferrofluid in the cement matrix leads to a shielding effectiveness of 46 dB (>99% attenuation).The presence of graphene oxide and ferrofluid in the cement leads to strong polarizations and magnetic losses that consequently result in higher shielding effectiveness compared to pristine cement. The resulting nanocomposites have shown Shore hardness of 54 and dc conductivity of 10.40 S cm( - 1). SEM reveals the homogeneous dispersion of graphene oxide and ferrofluid in the cement matrix.Keywords
This publication has 35 references indexed in Scilit:
- Electromagnetic interference shielding properties of carbon nanotube buckypaper compositesNanotechnology, 2009
- Decisive properties of graphite-filled cement composites for device applicationApplied Physics A, 2008
- Electromagnetic and microwave absorption properties of (Co2+–Si4+) substituted barium hexaferrites and its polymer compositeJournal of Applied Physics, 2007
- Lightweight electromagnetic shields using optimized polyaniline composites in the microwave bandPolymers for Advanced Technologies, 2007
- Electromagnetic interference shielding and radiation absorption in thin polypyrrole filmsEuropean Polymer Journal, 2007
- Electromagnetic shielding behaviour of conducting polyaniline compositesScience and Technology of Advanced Materials, 2003
- A review of EMI shielding and suppression materialsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Materials for Electromagnetic Interference ShieldingJournal of Materials Engineering and Performance, 2000
- Control of conductivity at microwave frequencies in a poly(aniline hydrochloride)-silver-polymer electrolyte composite materialElectronics Letters, 1996
- Techniques for measuring the electromagnetic shielding effectiveness of materials. I. Far-field source simulationIEEE Transactions on Electromagnetic Compatibility, 1988