Temperature‐dependent electromagnetic microwave absorbing characteristics of stretchable polyurethane composite foams with ultra‐wide bandwidth

Sun, Z; Chen, Y; Zheng, J; Jiang, S; Dong, W; Li, X; Li, Y; Shiju, E

Temperature‐dependent electromagnetic microwave absorbing characteristics of stretchable polyurethane composite foams with ultra‐wide bandwidth

Sun, Z Chen, Y Zheng, J Jiang, S Dong, W Li, X Li, Y

Shiju, E

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Publisher:: Wiley
Publication Type:: Journal Article
Citation:: Advanced Engineering Materials, 2022, 24, (7)
Issue Date:: 2022-01-01

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Field	Value	Language
dc.contributor.author	Sun, Z
dc.contributor.author	Chen, Y
dc.contributor.author	Zheng, J
dc.contributor.author	Jiang, S
dc.contributor.author	Dong, W
dc.contributor.author	Li, X
dc.contributor.author	Li, Y https://orcid.org/0000-0002-6720-8493
dc.contributor.author	Shiju, E
dc.date.accessioned	2023-03-16T00:59:54Z
dc.date.available	2023-03-16T00:59:54Z
dc.date.issued	2022-01-01
dc.identifier.citation	Advanced Engineering Materials, 2022, 24, (7)
dc.identifier.issn	1438-1656
dc.identifier.issn	1527-2648
dc.identifier.uri	http://hdl.handle.net/10453/167374
dc.description.abstract	With the rapid development of current electronic equipment, electromagnetic microwave absorption (EMA) materials with higher design requirements under special circumstances have attracted great attention. Herein, a flexible polyurethane composite foam assisted by coral-like CNT@Fe3O4/graphene nanocomposites is fabricated by a facile solvothermal and moisture self-foaming method. The composite foam with 15 wt% nanofillers exhibits an outstanding temperature cycle stability with gradually improved EMA performance at elevated temperature and excellent resilience stability with a tensile strength of 4.81 MPa. An enhanced minimum reflection loss (RLmin) of −59.44 dB at 10.38 GHz with a thickness of 2.28 mm is achieved, while the ultrawide absorption bandwidth of 6.09 GHz nearly covers the full X-band. This benefits from interface impedance matching, dielectric and magnetic dual losses, and multiple reflections depending on the interior open microcellular structures. It is expected to become a promising thermally tunable microwave absorber in harsh environments.
dc.language	en
dc.publisher	Wiley
dc.relation.ispartof	Advanced Engineering Materials
dc.relation.isbasedon	10.1002/adem.202101489
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0912 Materials Engineering
dc.subject.classification	Materials
dc.title	Temperature‐dependent electromagnetic microwave absorbing characteristics of stretchable polyurethane composite foams with ultra‐wide bandwidth
dc.type	Journal Article
utslib.citation.volume	24
utslib.for	0912 Materials Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access	*
pubs.consider-herdc	true
dc.date.updated	2023-03-16T00:58:27Z
pubs.issue	7
pubs.publication-status	Published online
pubs.volume	24
utslib.citation.issue	7

Abstract:

With the rapid development of current electronic equipment, electromagnetic microwave absorption (EMA) materials with higher design requirements under special circumstances have attracted great attention. Herein, a flexible polyurethane composite foam assisted by coral-like CNT@Fe3O4/graphene nanocomposites is fabricated by a facile solvothermal and moisture self-foaming method. The composite foam with 15 wt% nanofillers exhibits an outstanding temperature cycle stability with gradually improved EMA performance at elevated temperature and excellent resilience stability with a tensile strength of 4.81 MPa. An enhanced minimum reflection loss (RLmin) of −59.44 dB at 10.38 GHz with a thickness of 2.28 mm is achieved, while the ultrawide absorption bandwidth of 6.09 GHz nearly covers the full X-band. This benefits from interface impedance matching, dielectric and magnetic dual losses, and multiple reflections depending on the interior open microcellular structures. It is expected to become a promising thermally tunable microwave absorber in harsh environments.

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http://hdl.handle.net/10453/167374