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Ultra-light reduced Graphene Oxide Based Aerogel/foam absorber of microwave radiation
- Source :
- Materials (Basel) (2019): 1–10. doi:10.3390/ma12020213, info:cnr-pdr/source/autori:Plyushch A., Tianliang Z., Xia H., Santillo C., Verdolotti L., Lavorgna M., Kuzhir P./titolo:Ultra-light reduced Graphene Oxide Based Aerogel%2Ffoam absorber of microwave radiation/doi:10.3390%2Fma12020213/rivista:Materials (Basel)/anno:2019/pagina_da:1/pagina_a:10/intervallo_pagine:1–10/volume, Materials, Materials, Vol 12, Iss 2, p 213 (2019), "Materials / Special Issue ""Carbon Based Functional Microwave Shields""", """Materials / Special Issue """"Carbon Based Functional Microwave Shields""""""", Volume 12, Issue 2
- Publication Year :
- 2019
- Publisher :
- Molecular Diversity Preservation International, Basel, 2019.
-
Abstract
- We present the polarization-dependent highly absorptive in Ka-band composition of conventional polyurethane foam filled with in situ synthesized aerogel coated by reduced graphene oxide (rGO). The rGO-based aerogel was in situ prepared into the open-cell polyurethane foam (PUF) skeleton through a bidirectional freeze-drying process. The aerogel is composed of the flat lamellas stacks, possessing the anisotropic structure and unique electromagnetic properties. Further improvement of the electromagnetic shielding ability was possible by the rGO coating introduction as a coupling layer between PUF and rGO-based aerogel. This enhances the overall conductivity of the resulting composites: 1.41 + 3.33i S/m vs. 0.9 + 2.45i S/m for PUF loaded with in situ synthesized aerogel without rGO coating.With this mechanically robust plane easy to process coating one could achieve &minus<br />20 dB by power with the record light structure (0.0462 g/cm2). That could compete in view of the weight per cm2 even with graphene-based absorbers comprising either dielectric matching elements or back metal reflectors, or both.
- Subjects :
- Materials science
microwave
aerogel
Oxide
02 engineering and technology
Dielectric
engineering.material
010402 general chemistry
lcsh:Technology
01 natural sciences
7. Clean energy
reduced graphene oxide
Article
law.invention
chemistry.chemical_compound
Coating
law
compressive deformation
General Materials Science
polyurethane foam
Composite material
lcsh:Microscopy
lcsh:QC120-168.85
Polyurethane
lcsh:QH201-278.5
lcsh:T
Graphene
Aerogel
021001 nanoscience & nanotechnology
0104 chemical sciences
absorption
electromagnetic interference shielding
chemistry
lcsh:TA1-2040
Electromagnetic shielding
engineering
lcsh:Descriptive and experimental mechanics
lcsh:Electrical engineering. Electronics. Nuclear engineering
lcsh:Engineering (General). Civil engineering (General)
0210 nano-technology
lcsh:TK1-9971
Layer (electronics)
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Materials (Basel) (2019): 1–10. doi:10.3390/ma12020213, info:cnr-pdr/source/autori:Plyushch A., Tianliang Z., Xia H., Santillo C., Verdolotti L., Lavorgna M., Kuzhir P./titolo:Ultra-light reduced Graphene Oxide Based Aerogel%2Ffoam absorber of microwave radiation/doi:10.3390%2Fma12020213/rivista:Materials (Basel)/anno:2019/pagina_da:1/pagina_a:10/intervallo_pagine:1–10/volume, Materials, Materials, Vol 12, Iss 2, p 213 (2019), "Materials / Special Issue ""Carbon Based Functional Microwave Shields""", """Materials / Special Issue """"Carbon Based Functional Microwave Shields""""""", Volume 12, Issue 2
- Accession number :
- edsair.doi.dedup.....2a12d0990684acbfb5983279e1fc8eb6
- Full Text :
- https://doi.org/10.3390/ma12020213