Ultra-Light Reduced Graphene Oxide Based Aerogel/Foam Absorber of Microwave Radiation
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 bi...
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doaj-e903e9ace416441d9732117ff024e5932020-11-24T21:49:47ZengMDPI AGMaterials1996-19442019-01-0112221310.3390/ma12020213ma12020213Ultra-Light Reduced Graphene Oxide Based Aerogel/Foam Absorber of Microwave RadiationArtyom Plyushch0Tianliang Zhai1Hesheng Xia2Chiara Santillo3Letizia Verdolotti4Marino Lavorgna5Polina Kuzhir6Institute for Nuclear Problems of Belarusian State University, Bobruiskaya 11, 220030 Minsk, BelarusGuizhou Building Material Quality Supervision Testing Center, Guiyang 550000, ChinaState Key Laboratory of Polymer Materials and Engineering, Sichuan University, Chengdu 610065, ChinaInstitute of Polymer, Composites and Biomedical Materials, IPCB-CNR, Naples 80125, ItalyInstitute of Polymer, Composites and Biomedical Materials, IPCB-CNR, Naples 80125, ItalyInstitute of Polymer, Composites and Biomedical Materials, IPCB-CNR, Naples 80125, ItalyInstitute for Nuclear Problems of Belarusian State University, Bobruiskaya 11, 220030 Minsk, BelarusWe 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 −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.http://www.mdpi.com/1996-1944/12/2/213reduced graphene oxidepolyurethane foamaerogelmicrowaveabsorptionelectromagnetic interference shieldingcompressive deformation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Artyom Plyushch Tianliang Zhai Hesheng Xia Chiara Santillo Letizia Verdolotti Marino Lavorgna Polina Kuzhir |
spellingShingle |
Artyom Plyushch Tianliang Zhai Hesheng Xia Chiara Santillo Letizia Verdolotti Marino Lavorgna Polina Kuzhir Ultra-Light Reduced Graphene Oxide Based Aerogel/Foam Absorber of Microwave Radiation Materials reduced graphene oxide polyurethane foam aerogel microwave absorption electromagnetic interference shielding compressive deformation |
author_facet |
Artyom Plyushch Tianliang Zhai Hesheng Xia Chiara Santillo Letizia Verdolotti Marino Lavorgna Polina Kuzhir |
author_sort |
Artyom Plyushch |
title |
Ultra-Light Reduced Graphene Oxide Based Aerogel/Foam Absorber of Microwave Radiation |
title_short |
Ultra-Light Reduced Graphene Oxide Based Aerogel/Foam Absorber of Microwave Radiation |
title_full |
Ultra-Light Reduced Graphene Oxide Based Aerogel/Foam Absorber of Microwave Radiation |
title_fullStr |
Ultra-Light Reduced Graphene Oxide Based Aerogel/Foam Absorber of Microwave Radiation |
title_full_unstemmed |
Ultra-Light Reduced Graphene Oxide Based Aerogel/Foam Absorber of Microwave Radiation |
title_sort |
ultra-light reduced graphene oxide based aerogel/foam absorber of microwave radiation |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2019-01-01 |
description |
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 −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. |
topic |
reduced graphene oxide polyurethane foam aerogel microwave absorption electromagnetic interference shielding compressive deformation |
url |
http://www.mdpi.com/1996-1944/12/2/213 |
work_keys_str_mv |
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