Temperature-stimulated composite foams for reversibly switching microwave absorption towards electromagnetic interference shielding capability

Zheng, J; Huang, T; Sun, Z; Jiang, S; Li, Z; Dong, W; Li, X; Li, Y; Sun, A; Chen, Y

Temperature-stimulated composite foams for reversibly switching microwave absorption towards electromagnetic interference shielding capability

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

Sun, A Chen, Y

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Diamond and Related Materials, 2023, 140, (Part B)
Issue Date:: 2023-10-16

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Field	Value	Language
dc.contributor.author	Zheng, J
dc.contributor.author	Huang, T
dc.contributor.author	Sun, Z
dc.contributor.author	Jiang, S
dc.contributor.author	Li, Z
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	Sun, A
dc.contributor.author	Chen, Y
dc.date.accessioned	2024-05-10T12:16:28Z
dc.date.available	2024-05-10T12:16:28Z
dc.date.issued	2023-10-16
dc.identifier.citation	Diamond and Related Materials, 2023, 140, (Part B)
dc.identifier.issn	0925-9635
dc.identifier.issn	1879-0062
dc.identifier.uri	http://hdl.handle.net/10453/178821
dc.description.abstract	Currently, electromagnetic interference (EMI) shielding and microwave absorption are two important means to alleviate the increasingly severe electromagnetic (EM) pollution. However, the application areas of EMI shielding and microwave absorption are quite different, so integrating these two capabilities in the same material is a great challenge. Herein, multiple-scale polyurethane (PU) composite foams (CFs) assisted by tadpole-like carbon nanotube (CNT)@Fe3O4 nanocomposites were designed by a facile solvothermal and self-foaming method. By adjusting the CNT@Fe3O4 loadings and ambient temperatures, the EM parameters and interface impedance matching of PU/CNT@Fe3O4 CFs could be optimized, thus realizing the coexistence of EMI shielding and microwave absorption inside one same material. The resulting CF exhibited an effective minimum reflection loss (RLmin) of −41.9 dB and EMI shielding effectiveness (SE) of ∼20 dB. Furthermore, the elevated temperatures within a range of −20-60 °C would stimulate the transformation of individual CF from microwave absorption towards EMI shielding capability and vice versa. This work will promote the development of intelligent EM compatible devices in the field of optional EM protection.
dc.language	English
dc.publisher	Elsevier
dc.relation.ispartof	Diamond and Related Materials
dc.relation.isbasedon	10.1016/j.diamond.2023.110499
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.subject	0904 Chemical Engineering, 0910 Manufacturing Engineering, 0912 Materials Engineering
dc.subject.classification	Applied Physics
dc.subject.classification	4016 Materials engineering
dc.subject.classification	4018 Nanotechnology
dc.subject.classification	5104 Condensed matter physics
dc.title	Temperature-stimulated composite foams for reversibly switching microwave absorption towards electromagnetic interference shielding capability
dc.type	Journal Article
utslib.citation.volume	140
utslib.for	0904 Chemical Engineering
utslib.for	0910 Manufacturing Engineering
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	in_progress	*
pubs.consider-herdc	false
dc.date.updated	2024-05-10T12:16:23Z
pubs.issue	Part B
pubs.publication-status	Published
pubs.volume	140
utslib.citation.issue	Part B

Abstract:

Currently, electromagnetic interference (EMI) shielding and microwave absorption are two important means to alleviate the increasingly severe electromagnetic (EM) pollution. However, the application areas of EMI shielding and microwave absorption are quite different, so integrating these two capabilities in the same material is a great challenge. Herein, multiple-scale polyurethane (PU) composite foams (CFs) assisted by tadpole-like carbon nanotube (CNT)@Fe3O4 nanocomposites were designed by a facile solvothermal and self-foaming method. By adjusting the CNT@Fe3O4 loadings and ambient temperatures, the EM parameters and interface impedance matching of PU/CNT@Fe3O4 CFs could be optimized, thus realizing the coexistence of EMI shielding and microwave absorption inside one same material. The resulting CF exhibited an effective minimum reflection loss (RLmin) of −41.9 dB and EMI shielding effectiveness (SE) of ∼20 dB. Furthermore, the elevated temperatures within a range of −20-60 °C would stimulate the transformation of individual CF from microwave absorption towards EMI shielding capability and vice versa. This work will promote the development of intelligent EM compatible devices in the field of optional EM protection.

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http://hdl.handle.net/10453/178821