Processing, thermal and mechanical properties of composite laminates with natural fibers prepregs
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , |
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. |
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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 |
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UFRGS |
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Repositório Institucional da UFRGS |
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Repositório Institucional da UFRGS |
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http://www.lume.ufrgs.br/bitstream/10183/254364/2/001160430.pdf.txt http://www.lume.ufrgs.br/bitstream/10183/254364/1/001160430.pdf |
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Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS) |
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lume@ufrgs.br |
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