Compósitos de polipropileno reforçados com nanopartículas de alumina e fibras curtas de carbono
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UERJ |
Texto Completo: | http://www.bdtd.uerj.br/handle/1/18252 |
Resumo: | In this investigation, composite materials based on polypropylene (PP) loaded with alumina nanoparticles (Al2O3) and reinforced with short carbon fibers (CF) were developed, aiming to obtain lightweight materials with high rigidity, mechanical strength and thermal stability, which can be processed in equipment commonly used in the polymer and automotive industries. For this purpose, polypropylene was processed with alumina, at levels defined through the response surface methodology inserted in Minitab software, in order to evaluate the effect of the incorporation of alumina and polypropylene grafted with maleic anhydride (PP-g-MA) used as a compatibilizer in some samples. The composites that presented the best mechanical properties, in this case, PP/PP-g-MA/Al2O3 hybrid composites were used with matrix and prepared using alumina content of 6% w/w and variable carbon fiber contents, between 10% w/w and 15% w/w. The composites were processed in a twin screw extruder, using a temperature profile from the feeding zone to the dosing zone of 200/210/190/190/190/190/200/220/220/230°C and screw rotation of 500 rpm. The preparation of PP/Al2O3 composites involved the development of a concentrate in a single screw extruder and subsequent dilution in a twin screw extruder. The temperature profile adopted was 180/200/200/200/200°C and the rotation speed was 35 rpm. The properties of the materials obtained were evaluated through several characterization techniques such as: mechanical tests in traction, thermogravimetry (TGA), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). The results obtained demonstrate that the hybrid composites show a tendency to increase stiffness at the cost of a significant loss of toughness with the increase in fiber content. In these materials, an increase in tensile strength is also observed. An increase in the modulus of elasticity was observed both in the hybrid composites and in the PP/Al2O3 composites. This increase, however, was more pronounced in the hybrid composites. The PP/Al2O3 and hybrid composites also showed an increase in tensile strength. The hybrid composites showed higher thermal stability than the PP/Al2O3 composites and lower melting and crystallization enthalpies. The micrographs obtained showed good interfacial adhesion between the alumina particles and the polymer, when the compatibilizer was used. In general, in this work, materials based on polypropylene were obtained with rigidity and mechanical strength superior to those presented by polypropylene. |
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Rocha, Marisa Cristina Guimarães Rochahttp://lattes.cnpq.br/5408802153017996Mendes, Luís Cláudiohttp://lattes.cnpq.br/7530599423996007d’Almeida, José Roberto Moraeshttp://lattes.cnpq.br/1672274202055214http://lattes.cnpq.br/6156993755667348Ferreira, João Lucas Alexandre Nunes Galvãojoaolucasgalvao@gmail.com2022-08-22T17:35:12Z2022-07-29FERREIRA, João Lucas Alexandre Nunes Galvão. Compósitos de polipropileno reforçados com nanopartículas de alumina e fibras curtas de carbono. 2022. 172 f. Dissertação (Mestrado em Ciência e Tecnologia de Materiais) - Instituto Politécnico, Universidade do Estado do Rio de Janeiro, Nova Friburgo, 2022.http://www.bdtd.uerj.br/handle/1/18252In this investigation, composite materials based on polypropylene (PP) loaded with alumina nanoparticles (Al2O3) and reinforced with short carbon fibers (CF) were developed, aiming to obtain lightweight materials with high rigidity, mechanical strength and thermal stability, which can be processed in equipment commonly used in the polymer and automotive industries. For this purpose, polypropylene was processed with alumina, at levels defined through the response surface methodology inserted in Minitab software, in order to evaluate the effect of the incorporation of alumina and polypropylene grafted with maleic anhydride (PP-g-MA) used as a compatibilizer in some samples. The composites that presented the best mechanical properties, in this case, PP/PP-g-MA/Al2O3 hybrid composites were used with matrix and prepared using alumina content of 6% w/w and variable carbon fiber contents, between 10% w/w and 15% w/w. The composites were processed in a twin screw extruder, using a temperature profile from the feeding zone to the dosing zone of 200/210/190/190/190/190/200/220/220/230°C and screw rotation of 500 rpm. The preparation of PP/Al2O3 composites involved the development of a concentrate in a single screw extruder and subsequent dilution in a twin screw extruder. The temperature profile adopted was 180/200/200/200/200°C and the rotation speed was 35 rpm. The properties of the materials obtained were evaluated through several characterization techniques such as: mechanical tests in traction, thermogravimetry (TGA), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). The results obtained demonstrate that the hybrid composites show a tendency to increase stiffness at the cost of a significant loss of toughness with the increase in fiber content. In these materials, an increase in tensile strength is also observed. An increase in the modulus of elasticity was observed both in the hybrid composites and in the PP/Al2O3 composites. This increase, however, was more pronounced in the hybrid composites. The PP/Al2O3 and hybrid composites also showed an increase in tensile strength. The hybrid composites showed higher thermal stability than the PP/Al2O3 composites and lower melting and crystallization enthalpies. The micrographs obtained showed good interfacial adhesion between the alumina particles and the polymer, when the compatibilizer was used. In general, in this work, materials based on polypropylene were obtained with rigidity and mechanical strength superior to those presented by polypropylene.Nesse trabalho, materiais compósitos à base de polipropileno (PP) carregados com nanopartículas de alumina (Al2O3) e reforçados com fibras de carbono curtas (FC), foram desenvolvidos, visando a obtenção de materiais leves, com alta rigidez, resistência mecânica e estabilidade térmica, passíveis de serem processados em equipamentos comumente usados nas indústrias de polímeros e automotiva. Com essa finalidade, polipropileno foi processado com alumina, em teores definidos através de metodologia de superfície de resposta inserida no software Minitab, de forma a se avaliar o efeito da incorporação de alumina e do polipropileno graftizado com anidrido maleico (PP-g-AM) usado como compatibilizante em algumas amostras. Os compósitos que apresentaram as melhores propriedades mecânicas, no caso, compósitos híbridos PP/PP g-AM/Al2O3 foram usados como matriz e preparados utilizando teor de alumina de 6% m/m e teores de fibras de carbono variáveis, entre 10% m/m e 15% m/m. Os compósitos foram processados em extrusora de rosca dupla, utilizando perfil de temperatura da zona de alimentação à zona de dosagem de 200/210/190/190/190/190/200/220/220/230°C e rotação do parafuso de 500 rpm. A preparação dos compósitos PP/Al2O3 envolveu o desenvolvimento de um concentrado em extrusora monorosca e posterior diluição em extrusora de rosca dupla. O perfil de temperatura adotado foi de 180/200/200/200/200°C e a velocidade de rotação foi de 35 rpm. As propriedades dos materiais obtidos foram avaliadas através de diversas técnicas de caracterização como: ensaios mecânicos em tração, termogravimetria (TGA), calorimetria diferencial exploratória (DSC) e microscopia eletrônica de varredura (MEV). Os resultados obtidos demonstram que os compósitos híbridos apresentam uma tendência de aumento da rigidez ao custo de uma perda significativa da tenacidade com o incremento do teor de fibras. Nesses materiais é observado também um aumento da resistência à tração. Aumento do módulo de elasticidade, foi observado, tanto nos compósitos híbridos como nos compósitos PP/Al2O3. Esse aumento, entretanto, foi mais pronunciado nos compósitos híbridos. Os compósitos PP/Al2O3 e híbridos apresentaram também aumento da resistência à tração. Os compósitos híbridos apresentaram maior estabilidade térmica do que os compósitos PP/Al2O3 e entalpias de fusão e de cristalização menores. As micrografias obtidas evidenciaram a boa adesão interfacial entre as partículas de alumina e o polímero, quando o compatibilizante foi utilizado. De forma geral, se obteve nesse trabalho materiais à base de polipropileno com rigidez e resistência mecânica superiores as apresentadas pelo polipropileno.Submitted by Pâmela CTC/E (pamela.flegr@uerj.br) on 2022-08-22T17:35:12Z No. of bitstreams: 1 Dissertação - João Lucas Alexandre Nunes Galvão Ferreira - 2022 - completo.pdf: 5307792 bytes, checksum: 63903d914faf8c6a4d0e903b63fb8970 (MD5)Made available in DSpace on 2022-08-22T17:35:12Z (GMT). No. of bitstreams: 1 Dissertação - João Lucas Alexandre Nunes Galvão Ferreira - 2022 - completo.pdf: 5307792 bytes, checksum: 63903d914faf8c6a4d0e903b63fb8970 (MD5) Previous issue date: 2022-07-29Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro - FAPERJapplication/pdfporUniversidade do Estado do Rio de JaneiroPrograma de Pós-Graduação em Ciência e Tecnologia de MateriaisUERJBrasilCentro de Tecnologia e Ciências::Instituto PolitécnicoPolypropyleneNanoparticlesHybrid compositeCarbon fiberAluminaPP-g- MAExperimental planningResponse surfacePolipropilenoNanopartículasCompósito híbridoFibra de carbonoAluminaCompatibilizantePlanejamento experimentalSuperfície de respostaCompósitos poliméricosPolipropilenoAluminaFibras de carbonoNanocompósitos (Materiais)ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA::MATERIAIS NAO METALICOSCompósitos de polipropileno reforçados com nanopartículas de alumina e fibras curtas de carbonoPolypropylene composites reinforced with alumina nanoparticles and carbon short fibersinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UERJinstname:Universidade do Estado do Rio de Janeiro (UERJ)instacron:UERJORIGINALDissertação - João Lucas Alexandre Nunes Galvão Ferreira - 2022 - completo.pdfDissertação - João Lucas Alexandre Nunes Galvão Ferreira - 2022 - completo.pdfapplication/pdf5307792http://www.bdtd.uerj.br/bitstream/1/18252/2/Disserta%C3%A7%C3%A3o+-+Jo%C3%A3o+Lucas+Alexandre+Nunes+Galv%C3%A3o+Ferreira+-+2022+-+completo.pdf63903d914faf8c6a4d0e903b63fb8970MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-82123http://www.bdtd.uerj.br/bitstream/1/18252/1/license.txte5502652da718045d7fcd832b79fca29MD511/182522024-02-27 14:29:39.54oai:www.bdtd.uerj.br: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Biblioteca Digital de Teses e Dissertaçõeshttp://www.bdtd.uerj.br/PUBhttps://www.bdtd.uerj.br:8443/oai/requestbdtd.suporte@uerj.bropendoar:29032024-02-27T17:29:39Biblioteca Digital de Teses e Dissertações da UERJ - Universidade do Estado do Rio de Janeiro (UERJ)false |
dc.title.por.fl_str_mv |
Compósitos de polipropileno reforçados com nanopartículas de alumina e fibras curtas de carbono |
dc.title.alternative.eng.fl_str_mv |
Polypropylene composites reinforced with alumina nanoparticles and carbon short fibers |
title |
Compósitos de polipropileno reforçados com nanopartículas de alumina e fibras curtas de carbono |
spellingShingle |
Compósitos de polipropileno reforçados com nanopartículas de alumina e fibras curtas de carbono Ferreira, João Lucas Alexandre Nunes Galvão Polypropylene Nanoparticles Hybrid composite Carbon fiber Alumina PP-g- MA Experimental planning Response surface Polipropileno Nanopartículas Compósito híbrido Fibra de carbono Alumina Compatibilizante Planejamento experimental Superfície de resposta Compósitos poliméricos Polipropileno Alumina Fibras de carbono Nanocompósitos (Materiais) ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA::MATERIAIS NAO METALICOS |
title_short |
Compósitos de polipropileno reforçados com nanopartículas de alumina e fibras curtas de carbono |
title_full |
Compósitos de polipropileno reforçados com nanopartículas de alumina e fibras curtas de carbono |
title_fullStr |
Compósitos de polipropileno reforçados com nanopartículas de alumina e fibras curtas de carbono |
title_full_unstemmed |
Compósitos de polipropileno reforçados com nanopartículas de alumina e fibras curtas de carbono |
title_sort |
Compósitos de polipropileno reforçados com nanopartículas de alumina e fibras curtas de carbono |
author |
Ferreira, João Lucas Alexandre Nunes Galvão |
author_facet |
Ferreira, João Lucas Alexandre Nunes Galvão joaolucasgalvao@gmail.com |
author_role |
author |
author2 |
joaolucasgalvao@gmail.com |
author2_role |
author |
dc.contributor.advisor1.fl_str_mv |
Rocha, Marisa Cristina Guimarães Rocha |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/5408802153017996 |
dc.contributor.referee1.fl_str_mv |
Mendes, Luís Cláudio |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/7530599423996007 |
dc.contributor.referee2.fl_str_mv |
d’Almeida, José Roberto Moraes |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/1672274202055214 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/6156993755667348 |
dc.contributor.author.fl_str_mv |
Ferreira, João Lucas Alexandre Nunes Galvão joaolucasgalvao@gmail.com |
contributor_str_mv |
Rocha, Marisa Cristina Guimarães Rocha Mendes, Luís Cláudio d’Almeida, José Roberto Moraes |
dc.subject.eng.fl_str_mv |
Polypropylene Nanoparticles Hybrid composite Carbon fiber Alumina PP-g- MA Experimental planning Response surface |
topic |
Polypropylene Nanoparticles Hybrid composite Carbon fiber Alumina PP-g- MA Experimental planning Response surface Polipropileno Nanopartículas Compósito híbrido Fibra de carbono Alumina Compatibilizante Planejamento experimental Superfície de resposta Compósitos poliméricos Polipropileno Alumina Fibras de carbono Nanocompósitos (Materiais) ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA::MATERIAIS NAO METALICOS |
dc.subject.por.fl_str_mv |
Polipropileno Nanopartículas Compósito híbrido Fibra de carbono Alumina Compatibilizante Planejamento experimental Superfície de resposta Compósitos poliméricos Polipropileno Alumina Fibras de carbono Nanocompósitos (Materiais) |
dc.subject.cnpq.fl_str_mv |
ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA::MATERIAIS NAO METALICOS |
description |
In this investigation, composite materials based on polypropylene (PP) loaded with alumina nanoparticles (Al2O3) and reinforced with short carbon fibers (CF) were developed, aiming to obtain lightweight materials with high rigidity, mechanical strength and thermal stability, which can be processed in equipment commonly used in the polymer and automotive industries. For this purpose, polypropylene was processed with alumina, at levels defined through the response surface methodology inserted in Minitab software, in order to evaluate the effect of the incorporation of alumina and polypropylene grafted with maleic anhydride (PP-g-MA) used as a compatibilizer in some samples. The composites that presented the best mechanical properties, in this case, PP/PP-g-MA/Al2O3 hybrid composites were used with matrix and prepared using alumina content of 6% w/w and variable carbon fiber contents, between 10% w/w and 15% w/w. The composites were processed in a twin screw extruder, using a temperature profile from the feeding zone to the dosing zone of 200/210/190/190/190/190/200/220/220/230°C and screw rotation of 500 rpm. The preparation of PP/Al2O3 composites involved the development of a concentrate in a single screw extruder and subsequent dilution in a twin screw extruder. The temperature profile adopted was 180/200/200/200/200°C and the rotation speed was 35 rpm. The properties of the materials obtained were evaluated through several characterization techniques such as: mechanical tests in traction, thermogravimetry (TGA), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). The results obtained demonstrate that the hybrid composites show a tendency to increase stiffness at the cost of a significant loss of toughness with the increase in fiber content. In these materials, an increase in tensile strength is also observed. An increase in the modulus of elasticity was observed both in the hybrid composites and in the PP/Al2O3 composites. This increase, however, was more pronounced in the hybrid composites. The PP/Al2O3 and hybrid composites also showed an increase in tensile strength. The hybrid composites showed higher thermal stability than the PP/Al2O3 composites and lower melting and crystallization enthalpies. The micrographs obtained showed good interfacial adhesion between the alumina particles and the polymer, when the compatibilizer was used. In general, in this work, materials based on polypropylene were obtained with rigidity and mechanical strength superior to those presented by polypropylene. |
publishDate |
2022 |
dc.date.accessioned.fl_str_mv |
2022-08-22T17:35:12Z |
dc.date.issued.fl_str_mv |
2022-07-29 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
FERREIRA, João Lucas Alexandre Nunes Galvão. Compósitos de polipropileno reforçados com nanopartículas de alumina e fibras curtas de carbono. 2022. 172 f. Dissertação (Mestrado em Ciência e Tecnologia de Materiais) - Instituto Politécnico, Universidade do Estado do Rio de Janeiro, Nova Friburgo, 2022. |
dc.identifier.uri.fl_str_mv |
http://www.bdtd.uerj.br/handle/1/18252 |
identifier_str_mv |
FERREIRA, João Lucas Alexandre Nunes Galvão. Compósitos de polipropileno reforçados com nanopartículas de alumina e fibras curtas de carbono. 2022. 172 f. Dissertação (Mestrado em Ciência e Tecnologia de Materiais) - Instituto Politécnico, Universidade do Estado do Rio de Janeiro, Nova Friburgo, 2022. |
url |
http://www.bdtd.uerj.br/handle/1/18252 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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.publisher.none.fl_str_mv |
Universidade do Estado do Rio de Janeiro |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Ciência e Tecnologia de Materiais |
dc.publisher.initials.fl_str_mv |
UERJ |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Centro de Tecnologia e Ciências::Instituto Politécnico |
publisher.none.fl_str_mv |
Universidade do Estado do Rio de Janeiro |
dc.source.none.fl_str_mv |
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UERJ |
reponame_str |
Biblioteca Digital de Teses e Dissertações da UERJ |
collection |
Biblioteca Digital de Teses e Dissertações da UERJ |
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http://www.bdtd.uerj.br/bitstream/1/18252/2/Disserta%C3%A7%C3%A3o+-+Jo%C3%A3o+Lucas+Alexandre+Nunes+Galv%C3%A3o+Ferreira+-+2022+-+completo.pdf http://www.bdtd.uerj.br/bitstream/1/18252/1/license.txt |
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Biblioteca Digital de Teses e Dissertações da UERJ - Universidade do Estado do Rio de Janeiro (UERJ) |
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bdtd.suporte@uerj.br |
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