| Effective electromagnetic interference shielding using polyurethane / Graphite composite foam materials |
| Paper ID : 1020-ASAT19-FULL (R2) |
| Authors: |
|
hussein Mohamed Oraby * military technical college |
| Abstract: |
| 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 using the in-situ preparation method. Different characterization tools such as Fourier Transform Infra-Red (FTIR) and scanning electron microscope (SEM), were employed to detect the chemical and morphological profiles of the prepared samples. Further mechanical properties for the prepared composite foam materials were studied to illustrate the possibility of using these materials in practical applications, especially for electromagnetic interference (EMI) shielding efficiency (SE) for aerospace applications. Also, in order to adapt and customize this work in the field of aerospace EMI SE, the measurements were performed in the X-band at the range of (8-12) GHz. The results showed that the increase in filler concentration enhanced the mechanical properties (compressive strength and compressive modulus) of the composite materials. Moreover EMI SE reached -45 dB with 30 wt % filler concentration. Finally polyurethane – graphite composite foam material can be considered promising material to be used in EMI SE. |
| Keywords: |
| Electromagnetic interference; shielding; polyurethane foam; Mechanical properties. |
| Status : Paper Accepted (Oral Presentation) |
