Investigation of the Dielectric Properties of Graphite and Carbon Black-Filled Composites as Electromagnetic Interference Shielding Coatings

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dc.authoridGumus, Emre/0000-0002-9446-6420
dc.authoridYagimli, Mustafa/0000-0003-4113-8308
dc.contributor.authorGumus, Emre
dc.contributor.authorYagimli, Mustafa
dc.contributor.authorArca, Emin
dc.date.accessioned2024-06-13T20:18:32Z
dc.date.available2024-06-13T20:18:32Z
dc.date.issued2023
dc.departmentİstanbul Gedik Üniversitesien_US
dc.description.abstractThe main purpose of electromagnetic interference (EMI) shielding coatings is the insulation of sensitive devices and protect people from electromagnetic field exposure due to its effects on the human body. This paper investigates the dielectric properties, and electromagnetic shielding performances of graphite and carbon black (CB) filled epoxy matrix composites produced by the mechanical mixing method. The sample compositions were created at rates ranging from 1 to 7 wt%. Samples were analyzed by Vector Network Analyzer (VNA) using the coaxial method in the range of 1-14 GHz, including L band, S band, C band, X band and partially Ku band. After determining the scattering parameters with VNA, AC conductivity, absorption, reflection and total shielding efficiency values were calculated. At high frequencies, almost all the samples showed higher AC conductivity. CB-filled samples show higher AC conductivity than graphite-filled samples. The total shielding efficiency (SET) of the graphite-added samples (19-21 dB) is slightly higher than the carbon black-added samples (8-17 dB). Distinct filling ratios in graphite-added samples result in closer shielding behavior in contrast to carbon black-added samples. However, higher shielding efficiency is observed as the CB filler ratio increases. The shielding efficiencies of the samples with both types of filling materials vary little depending on the frequency. Reflection is the main mechanism of the shielding efficiency, which constitutes the majority of total efficiency for all types of samples.en_US
dc.description.sponsorshipScientific Research Projects Coordination Unit of Istanbul Gedik University [GDK202006-05]en_US
dc.description.sponsorshipThis research was funded by the Scientific Research Projects Coordination Unit of Istanbul Gedik University, project number GDK202006-05.en_US
dc.identifier.doi10.3390/app13158893
dc.identifier.issn2076-3417
dc.identifier.issue15en_US
dc.identifier.scopus2-s2.0-85167881309en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.3390/app13158893
dc.identifier.urihttps://hdl.handle.net/11501/1427
dc.identifier.volume13en_US
dc.identifier.wosWOS:001045376800001en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherMdpien_US
dc.relation.ispartofApplied Sciences-Baselen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectCoatingen_US
dc.subjectElectromagnetic Interference Shieldingen_US
dc.subjectCompositesen_US
dc.subjectCarbon Blacken_US
dc.subjectGraphiteen_US
dc.subjectMicrowave-Absorptionen_US
dc.subjectAc Conductivityen_US
dc.subjectNanocompositesen_US
dc.subjectMechanismsen_US
dc.subjectFieldsen_US
dc.titleInvestigation of the Dielectric Properties of Graphite and Carbon Black-Filled Composites as Electromagnetic Interference Shielding Coatingsen_US
dc.typeArticleen_US

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