Sub-Terahertz Absorption Shielding Performances of Polyurethane - Carbon Nanotubes composite Foams
(2025) Materials Research Bulletin — p. 25 p. (2025)
Files
preprint.pdf
preprinr
Open Access - Adobe PDF
- 1.51 MB
Details
- Authors
- Abstract
- This study presents a novel investigation of the impact of multiwalled carbon nanotube (CNT) on the microstructure and electromagnetic shielding properties of polyurethane (PU) foams across an exceptional ultra-wideband frequency range, from 5.85 GHz to 330 GHz. The microstructure results show that the CNT formed an interconnected and well-distributed network on the PU surface. In addition, increasing CNT content from 1 wt.% to 11.2 wt.% significantly enhanced the total shielding effectiveness (SET) by approximately four times over the whole frequency range. The absorption is identified as the main mechanism contributing to the SET performance of our 2.4 mm-thick foamed composite samples, representing more than 98% of the SET above 40 GHz and up to 330 GHz. Hence, the corresponding absorption level achieved in this range is 13 – 45 dB. Our samples exhibit significant potential for electromagnetic interference shielding applications since they meet the standard commercial requirements.
- Affiliations
Citations
Khamis, A., Urbanczyk, L., Detrambleur, C., & Huynen, I. (2025). Sub-Terahertz Absorption Shielding Performances of Polyurethane - Carbon Nanotubes composite Foams. Materials Research Bulletin, 25 p. https://doi.org/10.1016/j.materresbull.2025.113793 (Original work published 2025)