Morphological, mechanical, and electromagnetic interference shielding effectiveness characteristics of glass fiber/epoxy resin/MWCNT buckypaper composites

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dc.contributor.authorRojas, Jefersson Alexander
dc.contributor.authorde Paula Santos, Luis Felipe [UNESP]
dc.contributor.authorBotelho, Edson Cocchieri [UNESP]
dc.contributor.authorRibeiro, Bruno
dc.contributor.authorRezende, Mirabel Cerqueira
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2021-06-25T11:11:54Z
dc.date.available2021-06-25T11:11:54Z
dc.date.issued2021-07-05
dc.description.abstractGlass fiber/epoxy resin composites (GF/EP) using one and three multi-walled carbon nanotube buckypapers (BP) were obtained and their complex parameters, reflectivity, and electromagnetic interference (EMI) shielding effectiveness (SE) at X-band (8.2–12.4 GHz) and Ku-band (12.4–18 GHz) were evaluated. The preparation of BP used polyacrylonitrile (PAN) nanofibers (PF These composites show both large storage and energy loss capacity in both bands revealing promising results related to EMI SE applications. Besides, a high attenuation of around 67% and 72% were achieved for BP based composites. The cross-section view of the buckypaper and the laminates was analyzed by scanning electron microscopy (SEM). The incorporation of the CNT film into the laminates showed no improvements in the elastic properties through dynamic mechanical analyses (DMA). Nevertheless, a decrease in the shear properties by the compression shear test (CST) and interlaminar shear strength (ILSS) has been observed. GF/EP/BP/PF composite presented a reduction of 29 and 39% in its ILSS properties compared to the base laminate (GF/EP). Also, the decrease was even more significant, revealing a steep reduction in its CST properties. On the other hand, the removal of the pan nanofiber (PF) led to better mechanical properties for GF/EP/BP/RPF composites. Results have shown ILSS values of 47.4 ± 2.2 MPa which are close to the base laminate (52.4 ± 3.1 MPa). The removal of the PF provided larger porous in the CNT network, making the impregnation by epoxy easier in the BP/RPF which resulted in improved shear properties compared to GF/EP/BP/PF samples.en
dc.description.affiliationFederal University of São Paulo (UNIFESP) Institute of Science and Technology
dc.description.affiliationSão Paulo State University (UNESP) Materials and Technology Department School of Engineering
dc.description.affiliationUnespSão Paulo State University (UNESP) Materials and Technology Department School of Engineering
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipIdFAPESP: 2017/04740-0
dc.description.sponsorshipIdFAPESP: 2017/16970-0
dc.description.sponsorshipIdFAPESP: 2018/07867-3
dc.description.sponsorshipIdFAPESP: 2018/09531-2
dc.description.sponsorshipIdCNPq: 305123/2018-1
dc.description.sponsorshipIdCAPES: Finance Code 001
dc.identifierhttp://dx.doi.org/10.1002/app.50589
dc.identifier.citationJournal of Applied Polymer Science, v. 138, n. 25, 2021.
dc.identifier.doi10.1002/app.50589
dc.identifier.issn1097-4628
dc.identifier.issn0021-8995
dc.identifier.scopus2-s2.0-85101126865
dc.identifier.urihttp://hdl.handle.net/11449/208424
dc.language.isoeng
dc.relation.ispartofJournal of Applied Polymer Science
dc.sourceScopus
dc.subjectcomposites
dc.subjectgraphene, and fullerenes
dc.subjectmechanical properties
dc.subjectnanotubes
dc.subjectthermosets
dc.titleMorphological, mechanical, and electromagnetic interference shielding effectiveness characteristics of glass fiber/epoxy resin/MWCNT buckypaper compositesen
dc.typeArtigo
unesp.author.orcid0000-0002-0078-9641[4]

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