Desenvolvimento de compósitos estruturais com fibra natural de ráfia com propriedades termoacústicas
Autor(a) principal: | |
---|---|
Data de Publicação: | 2016 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da PUC_RS |
Texto Completo: | http://tede2.pucrs.br/tede2/handle/tede/6957 |
Resumo: | The need to reduce the environmental impact caused by the materials used in the industry has led to research on environmentally sustainable materials. The composites with filler as natural fibers are presented as an alternative. This study proposes the use of Raphia natural fiber as filler in structural composite by processes such as laminating, molding and -bonding. Characterization of the pure raphia fiber and the composites resulting of these processes was performed to investigate the morphology, mechanical properties such as bending limit, elastic modulus, shear limit in bonding and the acoustic properties. The fiber compatibility with the polymer matrix was evaluated as well as its thermal decomposition by thermal gravimetric analysis (TGA). Characterization results of Raphia natural fiber indicate that this fiber has interesting, a specifies mass less than 90% wood, thermoacoustics properties and good resistance to flame spread, investigated by the inflammability test. The morphological analysis showed that the pure raphia fiber is composed of a threedimensional arrangement of closed cells, separated by longitudinal layers. This type of arrangement is similar to other systems that have good thermoacoustics roperties. Regarding the compatibility of fiber with polymer matrices, epoxy resins showed good adherence to laminar composites. These resins also showed good results in the preparation of sandwich panels with external offset plates of wood and aluminum with core of raphia natural fiber. The preparation processes of MDF, OSB, MDP were tested and showed consistent with the raphia natural fiber using natural adhesive. The properties evaluation of the studied structural composites, such as elastic odulus, flexural strength, sound absorption and thermal conductivity were superior to those materials used nowadays in many products with thermoacoustic insulation characteristics. The hybrid laminar composite epoxy adhesive, micro glass bead, plasticizer, raffia natural fiber and carbon fiber showed 22.63% better mechanical properties and bulk density 26% less than the offset properties of wood used as flooring. |
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Ligabue, Rosane Angélica501.822.770-20http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4784426H5Einloft, Sandra Mara Oliveirahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4787827D1661.565.990-53http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4210522Z2Mveh, Jean de Dieu Briand Minsongui2016-09-16T16:23:30Z2016-03-29http://tede2.pucrs.br/tede2/handle/tede/6957The need to reduce the environmental impact caused by the materials used in the industry has led to research on environmentally sustainable materials. The composites with filler as natural fibers are presented as an alternative. This study proposes the use of Raphia natural fiber as filler in structural composite by processes such as laminating, molding and -bonding. Characterization of the pure raphia fiber and the composites resulting of these processes was performed to investigate the morphology, mechanical properties such as bending limit, elastic modulus, shear limit in bonding and the acoustic properties. The fiber compatibility with the polymer matrix was evaluated as well as its thermal decomposition by thermal gravimetric analysis (TGA). Characterization results of Raphia natural fiber indicate that this fiber has interesting, a specifies mass less than 90% wood, thermoacoustics properties and good resistance to flame spread, investigated by the inflammability test. The morphological analysis showed that the pure raphia fiber is composed of a threedimensional arrangement of closed cells, separated by longitudinal layers. This type of arrangement is similar to other systems that have good thermoacoustics roperties. Regarding the compatibility of fiber with polymer matrices, epoxy resins showed good adherence to laminar composites. These resins also showed good results in the preparation of sandwich panels with external offset plates of wood and aluminum with core of raphia natural fiber. The preparation processes of MDF, OSB, MDP were tested and showed consistent with the raphia natural fiber using natural adhesive. The properties evaluation of the studied structural composites, such as elastic odulus, flexural strength, sound absorption and thermal conductivity were superior to those materials used nowadays in many products with thermoacoustic insulation characteristics. The hybrid laminar composite epoxy adhesive, micro glass bead, plasticizer, raffia natural fiber and carbon fiber showed 22.63% better mechanical properties and bulk density 26% less than the offset properties of wood used as flooring.A necessidade de reduzir o impacto ambiental provocado pelos materiais utilizados na indústria tem levado à pesquisa de materiais ecologicamente viáveis. Os compósitos com cargas de fibras naturais apresentam-se como uma das alternativas. Esse trabalho propõe o uso da fibra natural de ráfia como reforço em compósitos estruturais, através de processos como a laminação, moldagem e colagem. A caracterização da fibra bruta da ráfia e dos compósitos resultantes desses processos foi realizada visando investigar as características morfológicas, as propriedades mecânicas, como os limites de flexão, o módulo de elasticidade e o limite de cisalhamento na linha de colagem, bem como as propriedades termo acústicas. A compatibilidade da fibra, com a matriz polimérica foi avaliada, bem como sua decomposição térmica pela análise termogravimétrica (TGA). Os resultados da caracterização da fibra natural de ráfia apontam que essa fibra possui propriedades termoacústicas interessantes, uma massa especifica 90% menor que a da madeira, além de uma boa resistência à propagação da chama, investigada pelo teste da inflamabilidade. A análise morfológica mostrou que a fibra de ráfia bruta é composta de um arranjo tridimensional de células fechadas, separadas por camadas longitudinais. Este tipo de arranjo é similar a outros sistemas que possuem boas propriedades termo acústicas. Com relação à compatibilização da fibra com matrizes poliméricas, as resinas epóxi apresentaram resultados satisfatórios para compósitos laminares. Essas resinas apresentaram também bons resultados na preparação de painéis sanduíche com placas externas de compensados de madeiras e de alumínio com núcleo em fibra natural de ráfia. Os processos de fabricação do MDF (Medium density fiberboard), OSB (Oriented strand board), MDP (Medium density particleboard) foram testados e se mostram compatíveis com a fibra natural de ráfia, utilizando adesivo natural. As propriedades dos compósitos estruturais estudados como o Módulo de elasticidade, a resistência à flexão, condutibilidade térmica e absorção sonora foram superiores daqueles materiais utilizados hoje em dia com características de isolamento termoacústico. O compósito híbrido laminar de adesivo epóxi, micro esfera de vidro, plastificante, fibra natural de ráfia e fibra de carbono apresentou propriedades mecânicas 22,63% melhores e a massa especifica 26% menor que as propriedades dos compensados de madeiras utilizados como assoalhos.Submitted by Setor de Tratamento da Informação - BC/PUCRS (tede2@pucrs.br) on 2016-09-16T16:23:29Z No. of bitstreams: 1 TES_JEAN_DE_DIEU_BRIAND_MINSONGUI_MVEH_PARCIAL.pdf: 178672 bytes, checksum: eb0ff52ad60141cd3a16ac743641ce51 (MD5)Made available in DSpace on 2016-09-16T16:23:30Z (GMT). No. of bitstreams: 1 TES_JEAN_DE_DIEU_BRIAND_MINSONGUI_MVEH_PARCIAL.pdf: 178672 bytes, checksum: eb0ff52ad60141cd3a16ac743641ce51 (MD5) Previous issue date: 2016-03-29application/pdfhttp://tede2.pucrs.br:80/tede2/retrieve/166255/TES_JEAN_DE_DIEU_BRIAND_MINSONGUI_MVEH_PARCIAL.pdf.jpgporPontifícia Universidade Católica do Rio Grande do SulPrograma de Pós-Graduação em Engenharia e Tecnologia de MateriaisPUCRSBrasilFaculdade de EngenhariaFIBRASMATERIAIS - PROPRIEDADESSUSTENTABILIDADEENGENHARIA DE MATERIAISENGENHARIASDesenvolvimento de compósitos estruturais com fibra natural de ráfia com propriedades termoacústicasDevelopment of structural composites with raphia natural fiber with thermoacoustics propertiesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesis-7432719344215120122600600600-6557705727614397854518971056484826825info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da PUC_RSinstname:Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)instacron:PUC_RSTHUMBNAILTES_JEAN_DE_DIEU_BRIAND_MINSONGUI_MVEH_PARCIAL.pdf.jpgTES_JEAN_DE_DIEU_BRIAND_MINSONGUI_MVEH_PARCIAL.pdf.jpgimage/jpeg4127http://tede2.pucrs.br/tede2/bitstream/tede/6957/5/TES_JEAN_DE_DIEU_BRIAND_MINSONGUI_MVEH_PARCIAL.pdf.jpg5fee92ab60b30fbf6f662f59aebda069MD55TEXTTES_JEAN_DE_DIEU_BRIAND_MINSONGUI_MVEH_PARCIAL.pdf.txtTES_JEAN_DE_DIEU_BRIAND_MINSONGUI_MVEH_PARCIAL.pdf.txttext/plain22787http://tede2.pucrs.br/tede2/bitstream/tede/6957/4/TES_JEAN_DE_DIEU_BRIAND_MINSONGUI_MVEH_PARCIAL.pdf.txt4e251573ea00d87fa7bde0c0a32724f0MD54LICENSElicense.txtlicense.txttext/plain; charset=utf-8610http://tede2.pucrs.br/tede2/bitstream/tede/6957/3/license.txt5a9d6006225b368ef605ba16b4f6d1beMD53ORIGINALTES_JEAN_DE_DIEU_BRIAND_MINSONGUI_MVEH_PARCIAL.pdfTES_JEAN_DE_DIEU_BRIAND_MINSONGUI_MVEH_PARCIAL.pdfapplication/pdf178672http://tede2.pucrs.br/tede2/bitstream/tede/6957/2/TES_JEAN_DE_DIEU_BRIAND_MINSONGUI_MVEH_PARCIAL.pdfeb0ff52ad60141cd3a16ac743641ce51MD52tede/69572016-09-16 20:00:38.737oai:tede2.pucrs.br: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Biblioteca Digital de Teses e Dissertaçõeshttp://tede2.pucrs.br/tede2/PRIhttps://tede2.pucrs.br/oai/requestbiblioteca.central@pucrs.br||opendoar:2016-09-16T23:00:38Biblioteca Digital de Teses e Dissertações da PUC_RS - Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)false |
dc.title.por.fl_str_mv |
Desenvolvimento de compósitos estruturais com fibra natural de ráfia com propriedades termoacústicas |
dc.title.alternative.eng.fl_str_mv |
Development of structural composites with raphia natural fiber with thermoacoustics properties |
title |
Desenvolvimento de compósitos estruturais com fibra natural de ráfia com propriedades termoacústicas |
spellingShingle |
Desenvolvimento de compósitos estruturais com fibra natural de ráfia com propriedades termoacústicas Mveh, Jean de Dieu Briand Minsongui FIBRAS MATERIAIS - PROPRIEDADES SUSTENTABILIDADE ENGENHARIA DE MATERIAIS ENGENHARIAS |
title_short |
Desenvolvimento de compósitos estruturais com fibra natural de ráfia com propriedades termoacústicas |
title_full |
Desenvolvimento de compósitos estruturais com fibra natural de ráfia com propriedades termoacústicas |
title_fullStr |
Desenvolvimento de compósitos estruturais com fibra natural de ráfia com propriedades termoacústicas |
title_full_unstemmed |
Desenvolvimento de compósitos estruturais com fibra natural de ráfia com propriedades termoacústicas |
title_sort |
Desenvolvimento de compósitos estruturais com fibra natural de ráfia com propriedades termoacústicas |
author |
Mveh, Jean de Dieu Briand Minsongui |
author_facet |
Mveh, Jean de Dieu Briand Minsongui |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Ligabue, Rosane Angélica |
dc.contributor.advisor1ID.fl_str_mv |
501.822.770-20 |
dc.contributor.advisor1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4784426H5 |
dc.contributor.advisor-co1.fl_str_mv |
Einloft, Sandra Mara Oliveira |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4787827D1 |
dc.contributor.authorID.fl_str_mv |
661.565.990-53 |
dc.contributor.authorLattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4210522Z2 |
dc.contributor.author.fl_str_mv |
Mveh, Jean de Dieu Briand Minsongui |
contributor_str_mv |
Ligabue, Rosane Angélica Einloft, Sandra Mara Oliveira |
dc.subject.por.fl_str_mv |
FIBRAS MATERIAIS - PROPRIEDADES SUSTENTABILIDADE ENGENHARIA DE MATERIAIS |
topic |
FIBRAS MATERIAIS - PROPRIEDADES SUSTENTABILIDADE ENGENHARIA DE MATERIAIS ENGENHARIAS |
dc.subject.cnpq.fl_str_mv |
ENGENHARIAS |
description |
The need to reduce the environmental impact caused by the materials used in the industry has led to research on environmentally sustainable materials. The composites with filler as natural fibers are presented as an alternative. This study proposes the use of Raphia natural fiber as filler in structural composite by processes such as laminating, molding and -bonding. Characterization of the pure raphia fiber and the composites resulting of these processes was performed to investigate the morphology, mechanical properties such as bending limit, elastic modulus, shear limit in bonding and the acoustic properties. The fiber compatibility with the polymer matrix was evaluated as well as its thermal decomposition by thermal gravimetric analysis (TGA). Characterization results of Raphia natural fiber indicate that this fiber has interesting, a specifies mass less than 90% wood, thermoacoustics properties and good resistance to flame spread, investigated by the inflammability test. The morphological analysis showed that the pure raphia fiber is composed of a threedimensional arrangement of closed cells, separated by longitudinal layers. This type of arrangement is similar to other systems that have good thermoacoustics roperties. Regarding the compatibility of fiber with polymer matrices, epoxy resins showed good adherence to laminar composites. These resins also showed good results in the preparation of sandwich panels with external offset plates of wood and aluminum with core of raphia natural fiber. The preparation processes of MDF, OSB, MDP were tested and showed consistent with the raphia natural fiber using natural adhesive. The properties evaluation of the studied structural composites, such as elastic odulus, flexural strength, sound absorption and thermal conductivity were superior to those materials used nowadays in many products with thermoacoustic insulation characteristics. The hybrid laminar composite epoxy adhesive, micro glass bead, plasticizer, raffia natural fiber and carbon fiber showed 22.63% better mechanical properties and bulk density 26% less than the offset properties of wood used as flooring. |
publishDate |
2016 |
dc.date.accessioned.fl_str_mv |
2016-09-16T16:23:30Z |
dc.date.issued.fl_str_mv |
2016-03-29 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
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doctoralThesis |
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publishedVersion |
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http://tede2.pucrs.br/tede2/handle/tede/6957 |
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http://tede2.pucrs.br/tede2/handle/tede/6957 |
dc.language.iso.fl_str_mv |
por |
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por |
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-7432719344215120122 |
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600 600 600 |
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-655770572761439785 |
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4518971056484826825 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
dc.publisher.none.fl_str_mv |
Pontifícia Universidade Católica do Rio Grande do Sul |
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Programa de Pós-Graduação em Engenharia e Tecnologia de Materiais |
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PUCRS |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Faculdade de Engenharia |
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Pontifícia Universidade Católica do Rio Grande do Sul |
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