Processing, thermal and mechanical properties of composite laminates with natural fibers prepregs

Detalhes bibliográficos
Autor(a) principal: Libera Junior, Vilson Dalla
Data de Publicação: 2022
Outros Autores: Teixeira, Linconl Araujo, Amico, Sandro Campos, Luz, Sandra Maria da
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/254364
Resumo: This work manufactured prepregs by impregnating discontinuous curaua fibers with B-stage epoxy resin. The prepreg layers were then stacked to produce laminates by hot compression. Alkaline treatments were previously applied to the curaua fibers to improve their interface with the polymer matrix. Then, the prepregs and the final composites were studied regarding their thermal, dynamic mechanical, mechanical, and morphological behavior. The treatments promoted defibrillation by removing lignin and hemicellulose from the fibers, which allowed better impregnation of the treated fibers with epoxy resin. In general, laminates that used treated fibers exhibited the largest storage modulus in the glassy region. The mechanical results showed the laminates produced with treated fibers prepregs presented a highest tensile and flexural resistance than those manufactured with untreated fibers and neat epoxy resin. The NaOH-treated curaua/epoxy laminate exhibited high tensile strength (56.2 MPa) and modulus (3.3 GPa). Overall, fracture morphology indicated better fiber adhesion for the treated fiber composites. The results demonstrate that natural fibers prepregs can be successfully produced and present proper physical and mechanical behavior in components.
id UFRGS-2_41244388e789aa0756bfb4426260bfe3
oai_identifier_str oai:www.lume.ufrgs.br:10183/254364
network_acronym_str UFRGS-2
network_name_str Repositório Institucional da UFRGS
repository_id_str
spelling Libera Junior, Vilson DallaTeixeira, Linconl AraujoAmico, Sandro CamposLuz, Sandra Maria da2023-02-08T05:01:19Z20221478-2391http://hdl.handle.net/10183/254364001160430This work manufactured prepregs by impregnating discontinuous curaua fibers with B-stage epoxy resin. The prepreg layers were then stacked to produce laminates by hot compression. Alkaline treatments were previously applied to the curaua fibers to improve their interface with the polymer matrix. Then, the prepregs and the final composites were studied regarding their thermal, dynamic mechanical, mechanical, and morphological behavior. The treatments promoted defibrillation by removing lignin and hemicellulose from the fibers, which allowed better impregnation of the treated fibers with epoxy resin. In general, laminates that used treated fibers exhibited the largest storage modulus in the glassy region. The mechanical results showed the laminates produced with treated fibers prepregs presented a highest tensile and flexural resistance than those manufactured with untreated fibers and neat epoxy resin. The NaOH-treated curaua/epoxy laminate exhibited high tensile strength (56.2 MPa) and modulus (3.3 GPa). Overall, fracture morphology indicated better fiber adhesion for the treated fiber composites. The results demonstrate that natural fibers prepregs can be successfully produced and present proper physical and mechanical behavior in components.application/pdfengPolymers and polymer composites [recurso eletrônico]. Thousand Oaks, CA. Vol. 30 (Jan.-Dec. 2022), p. 1-10Compósitos laminadosFibra de curauáCuraua fibersPrepregsLaminate compositesCharacterizationProcessing, thermal and mechanical properties of composite laminates with natural fibers prepregsEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001160430.pdf.txt001160430.pdf.txtExtracted Texttext/plain34683http://www.lume.ufrgs.br/bitstream/10183/254364/2/001160430.pdf.txt4cea4180673373490aba9e04add127caMD52ORIGINAL001160430.pdfTexto completo (inglês)application/pdf2440299http://www.lume.ufrgs.br/bitstream/10183/254364/1/001160430.pdf5aeea6bc760eb855fae4baeaeff15f62MD5110183/2543642023-02-10 05:54:59.652703oai:www.lume.ufrgs.br:10183/254364Repositório InstitucionalPUBhttps://lume.ufrgs.br/oai/requestlume@ufrgs.bropendoar:2023-02-10T07:54:59Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Processing, thermal and mechanical properties of composite laminates with natural fibers prepregs
title Processing, thermal and mechanical properties of composite laminates with natural fibers prepregs
spellingShingle Processing, thermal and mechanical properties of composite laminates with natural fibers prepregs
Libera Junior, Vilson Dalla
Compósitos laminados
Fibra de curauá
Curaua fibers
Prepregs
Laminate composites
Characterization
title_short Processing, thermal and mechanical properties of composite laminates with natural fibers prepregs
title_full Processing, thermal and mechanical properties of composite laminates with natural fibers prepregs
title_fullStr Processing, thermal and mechanical properties of composite laminates with natural fibers prepregs
title_full_unstemmed Processing, thermal and mechanical properties of composite laminates with natural fibers prepregs
title_sort Processing, thermal and mechanical properties of composite laminates with natural fibers prepregs
author Libera Junior, Vilson Dalla
author_facet Libera Junior, Vilson Dalla
Teixeira, Linconl Araujo
Amico, Sandro Campos
Luz, Sandra Maria da
author_role author
author2 Teixeira, Linconl Araujo
Amico, Sandro Campos
Luz, Sandra Maria da
author2_role author
author
author
dc.contributor.author.fl_str_mv Libera Junior, Vilson Dalla
Teixeira, Linconl Araujo
Amico, Sandro Campos
Luz, Sandra Maria da
dc.subject.por.fl_str_mv Compósitos laminados
Fibra de curauá
topic Compósitos laminados
Fibra de curauá
Curaua fibers
Prepregs
Laminate composites
Characterization
dc.subject.eng.fl_str_mv Curaua fibers
Prepregs
Laminate composites
Characterization
description This work manufactured prepregs by impregnating discontinuous curaua fibers with B-stage epoxy resin. The prepreg layers were then stacked to produce laminates by hot compression. Alkaline treatments were previously applied to the curaua fibers to improve their interface with the polymer matrix. Then, the prepregs and the final composites were studied regarding their thermal, dynamic mechanical, mechanical, and morphological behavior. The treatments promoted defibrillation by removing lignin and hemicellulose from the fibers, which allowed better impregnation of the treated fibers with epoxy resin. In general, laminates that used treated fibers exhibited the largest storage modulus in the glassy region. The mechanical results showed the laminates produced with treated fibers prepregs presented a highest tensile and flexural resistance than those manufactured with untreated fibers and neat epoxy resin. The NaOH-treated curaua/epoxy laminate exhibited high tensile strength (56.2 MPa) and modulus (3.3 GPa). Overall, fracture morphology indicated better fiber adhesion for the treated fiber composites. The results demonstrate that natural fibers prepregs can be successfully produced and present proper physical and mechanical behavior in components.
publishDate 2022
dc.date.issued.fl_str_mv 2022
dc.date.accessioned.fl_str_mv 2023-02-08T05:01:19Z
dc.type.driver.fl_str_mv Estrangeiro
info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/254364
dc.identifier.issn.pt_BR.fl_str_mv 1478-2391
dc.identifier.nrb.pt_BR.fl_str_mv 001160430
identifier_str_mv 1478-2391
001160430
url http://hdl.handle.net/10183/254364
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Polymers and polymer composites [recurso eletrônico]. Thousand Oaks, CA. Vol. 30 (Jan.-Dec. 2022), p. 1-10
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFRGS
instname:Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
instname_str Universidade Federal do Rio Grande do Sul (UFRGS)
instacron_str UFRGS
institution UFRGS
reponame_str Repositório Institucional da UFRGS
collection Repositório Institucional da UFRGS
bitstream.url.fl_str_mv http://www.lume.ufrgs.br/bitstream/10183/254364/2/001160430.pdf.txt
http://www.lume.ufrgs.br/bitstream/10183/254364/1/001160430.pdf
bitstream.checksum.fl_str_mv 4cea4180673373490aba9e04add127ca
5aeea6bc760eb855fae4baeaeff15f62
bitstream.checksumAlgorithm.fl_str_mv MD5
MD5
repository.name.fl_str_mv Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)
repository.mail.fl_str_mv lume@ufrgs.br
_version_ 1817725155646898176