Open AccessEffective electromagnetic interference shielding using polyurethane / graphite composite foam materials
Author(s) -
Hussein Oraby,
Hesham Tantawy,
Ibrahim Naeem,
Mohamed Magdy,
Ahmed A. Ezz,
Magdy M. Senna
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1172/1/012020
Subject(s) - materials science , polyurethane , composite material , graphite , electromagnetic shielding , emi , composite number , scanning electron microscope , electromagnetic interference , compressive strength , filler (materials) , fourier transform infrared spectroscopy , polymer , chemical engineering , electronic engineering , engineering
Conversely, to metallic based electromagnetic interference (EMI) shielding materials; composite polymer-based foams are normally lightweight, cheaper than metals, and less sensitive to types of environmental degradation. In this work polyurethane - Graphite composite (PU-G) foam materials were prepared with different filler concentrations. Different characterization tools such as Fourier Transform Infra-Red (FTIR) and scanning electron microscope (SEM), were used to identify the structural and topological construction of the prepared composites. Further mechanical properties for the prepared samples were studied to elucidate the opportunity of utilizing these composites in applied applications, specifically for electromagnetic interference (EMI) shielding efficiency (SE) for aerospace applications. Also, in order to adjust this research in the area of aerospace EMI SE, the evaluations were executed in the X-band at (8-12) GHz. The obtained data indicated that the moreover in filler concentration enhanced the compressive strength and compressive modulus of the prepared samples. Moreover EMI SE reached -44 dB with 30 wt % graphite concentration. Finally polyurethane – graphite composite foam material can be taken into consideration a gratifying material to be utilised in EMI SE.