RT Journal Article
T1 Highly Deformable Porous Electromagnetic Wave Absorber Based on Ethylene-Propylene-Diene Monomer/Multiwall Carbon Nanotube Nanocomposites
A1 Bizhani, Hasti
A1 Katbab, Ali Asghar
A1 López Hernández, Emil
A1 Miranda Pantoja, José Miguel
A1 Verdejo, Raquel
AB The need for electromagnetic interference (EMI) shields has risen over the years as the result of our digitally and highly connected lifestyle. This work reports on the development of one such shield based on vulcanized rubber foams. Nanocomposites of ethylene-propylene-diene monomer (EPDM) rubber and multiwall carbon nanotubes (MWCNTs) were prepared via hot compression molding using a chemical blowing agent as foaming agent. MWCNTs accelerated the cure and led to high shear-thinning behavior, indicative of the formation of a 3D interconnected physical network. Foamed nanocomposites exhibited lower electrical percolation threshold than their solid counterparts. Above percolation, foamed nanocomposites displayed EMI absorption values of 28-45 dB in the frequency range of the X-band. The total EMI shielding efficiency of the foams was insignificantly affected by repeated bending with high recovery behavior. Our results highlight the potential of cross-linked EPDM/MWCNT foams as a lightweight EM wave absorber with high flexibility and deformability.
PB MDPI
SN 2073-4360
YR 2020
FD 2020-04
LK https://hdl.handle.net/20.500.14352/6332
UL https://hdl.handle.net/20.500.14352/6332
LA eng
NO © This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. This research was funded by MICIU, grant number MAT2016-81138-R.
NO Ministerio de Ciencia e Innovación (MICINN)
DS Docta Complutense
RD 17 abr 2025