| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Synthesis, Characterization, Modeling and Applications of Functional Porous Materials
|
| Presentation Title |
Carbon Fibers Loaded Epoxy Foam: From Dielectric Characterization to Electromagnetic Absorption Application |
| Author(s) |
Ratiba Benzerga, Chloé Méjean, Laura Pometcu, Philippe Pouliguen, Ala Sharaiha |
| On-Site Speaker (Planned) |
Ratiba Benzerga |
| Abstract Scope |
The form and composition of electromagnetic absorbers are various and depend on the targeted application. Pyramidal absorbers made of flexible polyurethane foam impregnated with a carbon solution are currently used for anechoic chambers. This paper presents an alternative absorbing material developed from epoxy foam and carbon fibers. The rigid foam was chosen because it can be machined with a complex geometry which enhances absorption performance. Furthermore, our process enables the complete embedding of the fibers which prevents any leak. Here, composites loaded with carbon fibers of different lengths (0.1 to 12mm) were achieved and their dielectric properties (permittivity and dielectric losses) were measured in the 2–18GHz frequency range. Therefore, simulations were performed to estimate the absorption performances of a pyramidal absorber and also a newly designed geometry. The simulation and measurement results of prototypes showed excellent performance with an equivalent even better absorption than the most used commercial absorber |