Nickel-coated carbon fillers for polyurethane foam with improved microwave absorption performance: A comparative analysis

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dc.contributor.authorKurt, Gökçe
dc.contributor.authorKorkmaz, Mehmet
dc.date.accessioned2024-05-03T08:33:21Z
dc.date.available2024-05-03T08:33:21Z
dc.date.issued2024
dc.departmentMühendislik Fakültesi
dc.description.abstractIn this study, polyurethane foam (PUF) composites were prepared by incorporating different functional fillers, and morphological, rheological, dielectric, and microwave absorption properties of these composite samples were investigated. Graphite (G), nickel (Ni), nickel-coated hybrid carbon (NiC), and iron II-III oxide (Fe3O4) powders were used as functional fillers, while rigid polyurethane foam (PUF) with a 40 kg/m3 density and a closed-cell structure was used as the carrier foam phase. Morphological analyses that were carried out by scanning electron microscopy showed that all fillers were dispersed between the cell walls. In dielectric characterization, the highest electrical permittivity values were obtained by incorporation of G, while the highest magnetic permeability values were obtained by incorporation of Fe3O4 at the same filler concentration. Furthermore, the PUF composites could be prepared using NiC at a higher filler concentration than the others due to the lower viscosity increasing effect of NiC. The highest microwave absorption performance was obtained in the NiC-filled PUF composite at a filler concentration of 120 phr. The minimum reflection loss (RL) value of -45.2 dB at 10.62 GHz and an RL value lower than -10 dB in the entire X-band region were obtained in the NiC-filled PUF composite.HighlightsNickel-coated carbon (NiC) filled polyurethane foam (PUF) was prepared.The absorption performance of NiC was compared to conventional filler.PUF composites containing NiC showed lower viscosity and processability.The highest absorption could be obtained by NiC compared to conventional fillers.
dc.identifier.doi10.1002/pen.26572
dc.identifier.endpage640en_US
dc.identifier.issn0032-3888
dc.identifier.issn1548-2634
dc.identifier.issue2en_US
dc.identifier.scopusqualityQ2
dc.identifier.startpage626en_US
dc.identifier.urihttps:/dx.doi.org10.1002/pen.26572
dc.identifier.urihttps://hdl.handle.net/20.500.12451/11764
dc.identifier.volume64en_US
dc.identifier.wosWOS:001108770000001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherWiley
dc.relation.ispartofPolymer Engineering & Science
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectDielectric Properties
dc.subjectFoams
dc.subjectPolyurethanes
dc.subjectRheology
dc.titleNickel-coated carbon fillers for polyurethane foam with improved microwave absorption performance: A comparative analysis
dc.typeArticle

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