Estudo termomecânico da resina poliéster/nanopartículas de haloisita com aditivo retardante de cura
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Tipo de documento: | Trabalho de conclusão de curso |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFAM |
Texto Completo: | http://riu.ufam.edu.br/handle/prefix/6230 |
Resumo: | In this work, the addition of haloysite nanoparticles was performed in the polyester resin additivated with powder from cupuaçu bark to study the influence that the nano clay had on the thermal and mechanical behavior of this composite. The attainment of the bark powder occurred through the comminution of the raw material in a ball mill for about 12 hours and, finally, the ground material was passed through a sieve with apertures of 75 µm (200 mesh), obtaining about 300 g of pericarp. This passed material was used as the curing retardant of the unsaturated polyester resin.Subsequently, composite plates of haloisite nanoparticles were made in mass proportions of 0 %, 1 %, 2 % and 4 % added to unsaturated polyester resin additivated with cupuaçu shell poder. For characterization of the thermomechanical properties of the composite obtained, a mechanical tensile test, TG and DSC thermal analyses, SEM optical analysis coupled with EDS to verify the matrix/loads interface in the fracture region of the tensile test and quantification of the chemical elements found, and Curing Kinetics test to verify the influence of nano clay on the additive resin cure were performed. It was observed in the SEM/EDS analysis that there was not a good interaction of the interfaces of the fillers in relation to the matrix. In the EDS analysis the aluminum element was identified, characteristic of the Haloisite nanoparticle composition (Al2Si2O5 (OH)4). For the specimens with added halloysite nanoparticles, all showed maximum stress values above about 11 % to 19.2 % of the Resin/Cupuaçu specimens, but lower than the pure polymer by about 8 % to 15 %. In the TG and DSC analysis no significant variation of the thermal degradation process of the polyester/cure retardant was observed with the addition of 1 %, 2 % and 4 % of nanoparticles. In the Cure Kinetics analysis it was observed that the composition with 4 % of halloysite nanoparticle, had a higher activation energy than the others, then an increase in energy and after that the reduction of activation energy as the conversion increased, which indicates to us an acceleration reaction. This increase during the conversion path is due to the Nano clay. |
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Estudo termomecânico da resina poliéster/nanopartículas de haloisita com aditivo retardante de curaThermomechanic study of polyester resin/halloysite nanoparticles with curing retardant additiveHaloisitaNanoargilaAditivo retardante curaCinética de curaResina PoliésterPericarpo cupuaçuCompósitoENGENHARIASPolyester ResinNanoargilaCinética de CuraHaloisiteInfluência termomecânicaIn this work, the addition of haloysite nanoparticles was performed in the polyester resin additivated with powder from cupuaçu bark to study the influence that the nano clay had on the thermal and mechanical behavior of this composite. The attainment of the bark powder occurred through the comminution of the raw material in a ball mill for about 12 hours and, finally, the ground material was passed through a sieve with apertures of 75 µm (200 mesh), obtaining about 300 g of pericarp. This passed material was used as the curing retardant of the unsaturated polyester resin.Subsequently, composite plates of haloisite nanoparticles were made in mass proportions of 0 %, 1 %, 2 % and 4 % added to unsaturated polyester resin additivated with cupuaçu shell poder. For characterization of the thermomechanical properties of the composite obtained, a mechanical tensile test, TG and DSC thermal analyses, SEM optical analysis coupled with EDS to verify the matrix/loads interface in the fracture region of the tensile test and quantification of the chemical elements found, and Curing Kinetics test to verify the influence of nano clay on the additive resin cure were performed. It was observed in the SEM/EDS analysis that there was not a good interaction of the interfaces of the fillers in relation to the matrix. In the EDS analysis the aluminum element was identified, characteristic of the Haloisite nanoparticle composition (Al2Si2O5 (OH)4). For the specimens with added halloysite nanoparticles, all showed maximum stress values above about 11 % to 19.2 % of the Resin/Cupuaçu specimens, but lower than the pure polymer by about 8 % to 15 %. In the TG and DSC analysis no significant variation of the thermal degradation process of the polyester/cure retardant was observed with the addition of 1 %, 2 % and 4 % of nanoparticles. In the Cure Kinetics analysis it was observed that the composition with 4 % of halloysite nanoparticle, had a higher activation energy than the others, then an increase in energy and after that the reduction of activation energy as the conversion increased, which indicates to us an acceleration reaction. This increase during the conversion path is due to the Nano clay.Neste trabalho realizou-se a adição de nanopartículas de haloísita na resina poliéster aditivada com pó da casca do cupuaçu para estudar a influência que a nanoargila teve sobre o comportamento térmico e mecânico deste compósito. A obtenção do pó da casca ocorreu por meio da cominuição da matéria-prima no moinho de bolas em torno de 12 horas e, por fim, o material moído foi passado na peneira com aberturas de: 75 µm (200 mesh). Obtendo-se cerca de 300g do pericarpo. Esse material passante foi utilizado como o retardante de cura da resina poliéster insaturada. Posteriormente, foram confeccionadas placas de compósitos de nanopartículas de haloisita em proporções em massa de 0 %, 1 %, 2% e 4 % adicionadas a resina poliéster insaturada aditivada com o pó da casca de cupuaçu. Para caracterização das propriedades termomecânicas do compósito obtido, realizou-se ensaio mecânico de tração, análises térmicas de TG e DSC, análise Óptica de MEV acoplada ao EDS para verificar a interface matriz/cargas na região de fratura do ensaio de tração e quantificação dos elementos químicos encontrados, e ensaio de Cinética de Cura para verificar a influência da nanoargila na cura da resina aditivada. Observou-se na análise MEV/EDS percebeu-se que não houve uma boa interação das interfaces das cargas em relação a matriz. Na análise de EDS identificou-se o elemento alumínio, característico da composição da nanopartícula de haloisita (Al2Si2O5 (OH)4). Para os corpos de provas com adição de nanopartículas de haloisita, todos apresentaram valores de tensão máxima acima cerca de 11 % a 19,2 % dos corpos de provas de Resina/Cupuaçu, porém sendo inferior ao polímero puro cerca de 8 % a 15 %. Na análise de TG e DSC não se observou variação significativa do processo de degradação térmica do poliéster/ retardante de cura com a adição de 1 %,2 % e 4 % de nanopartículas. Na análise de Cinética de Cura observou-se que a composição com 4 % de nanopartícula de haloisita, teve uma energia de ativação mais elevada que as outras, em seguida um aumento da energia e após isso a redução da energia de ativação conforme a conversão aumentava, o que nos indica uma reação de aceleração. Este aumento durante o percurso da conversão deve-se à Nanoargila.1NãoBrasilFT - Faculdade de TecnologiaManaus-AMEngenharia de Materiais - Bacharelado - ManausMendonça, Rannier Marqueshttp://lattes.cnpq.br/3611579645399929Giacon, Virginia Mansanareshttp://lattes.cnpq.br/4564495477916533Costella, Ângela Mari dos Santoshttp://lattes.cnpq.br/9088328269240304https://orcid.org/0000-0002-8611-7861https://orcid.org/0000-0002-8611-7861https://orcid.org/0000-0003-3628-7317https://orcid.org/0000-0003-3628-7317https://orcid.org/0000-0002-6437-4656Vieira, Geovanni da Costa2022-05-20T12:51:11Z2022-05-182022-05-20T12:51:11Z2022-04-28info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/bachelorThesishttp://riu.ufam.edu.br/handle/prefix/6230porAn error occurred getting the license - uri.info:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFAMinstname:Universidade Federal do Amazonas (UFAM)instacron:UFAM2022-05-20T12:51:45Zoai:localhost:prefix/6230Repositório InstitucionalPUBhttp://riu.ufam.edu.br/oai/requestopendoar:2022-05-20T12:51:45Repositório Institucional da UFAM - Universidade Federal do Amazonas (UFAM)false |
dc.title.none.fl_str_mv |
Estudo termomecânico da resina poliéster/nanopartículas de haloisita com aditivo retardante de cura Thermomechanic study of polyester resin/halloysite nanoparticles with curing retardant additive |
title |
Estudo termomecânico da resina poliéster/nanopartículas de haloisita com aditivo retardante de cura |
spellingShingle |
Estudo termomecânico da resina poliéster/nanopartículas de haloisita com aditivo retardante de cura Vieira, Geovanni da Costa Haloisita Nanoargila Aditivo retardante cura Cinética de cura Resina Poliéster Pericarpo cupuaçu Compósito ENGENHARIAS Polyester Resin Nanoargila Cinética de Cura Haloisite Influência termomecânica |
title_short |
Estudo termomecânico da resina poliéster/nanopartículas de haloisita com aditivo retardante de cura |
title_full |
Estudo termomecânico da resina poliéster/nanopartículas de haloisita com aditivo retardante de cura |
title_fullStr |
Estudo termomecânico da resina poliéster/nanopartículas de haloisita com aditivo retardante de cura |
title_full_unstemmed |
Estudo termomecânico da resina poliéster/nanopartículas de haloisita com aditivo retardante de cura |
title_sort |
Estudo termomecânico da resina poliéster/nanopartículas de haloisita com aditivo retardante de cura |
author |
Vieira, Geovanni da Costa |
author_facet |
Vieira, Geovanni da Costa |
author_role |
author |
dc.contributor.none.fl_str_mv |
Mendonça, Rannier Marques http://lattes.cnpq.br/3611579645399929 Giacon, Virginia Mansanares http://lattes.cnpq.br/4564495477916533 Costella, Ângela Mari dos Santos http://lattes.cnpq.br/9088328269240304 https://orcid.org/0000-0002-8611-7861 https://orcid.org/0000-0002-8611-7861 https://orcid.org/0000-0003-3628-7317 https://orcid.org/0000-0003-3628-7317 https://orcid.org/0000-0002-6437-4656 |
dc.contributor.author.fl_str_mv |
Vieira, Geovanni da Costa |
dc.subject.por.fl_str_mv |
Haloisita Nanoargila Aditivo retardante cura Cinética de cura Resina Poliéster Pericarpo cupuaçu Compósito ENGENHARIAS Polyester Resin Nanoargila Cinética de Cura Haloisite Influência termomecânica |
topic |
Haloisita Nanoargila Aditivo retardante cura Cinética de cura Resina Poliéster Pericarpo cupuaçu Compósito ENGENHARIAS Polyester Resin Nanoargila Cinética de Cura Haloisite Influência termomecânica |
description |
In this work, the addition of haloysite nanoparticles was performed in the polyester resin additivated with powder from cupuaçu bark to study the influence that the nano clay had on the thermal and mechanical behavior of this composite. The attainment of the bark powder occurred through the comminution of the raw material in a ball mill for about 12 hours and, finally, the ground material was passed through a sieve with apertures of 75 µm (200 mesh), obtaining about 300 g of pericarp. This passed material was used as the curing retardant of the unsaturated polyester resin.Subsequently, composite plates of haloisite nanoparticles were made in mass proportions of 0 %, 1 %, 2 % and 4 % added to unsaturated polyester resin additivated with cupuaçu shell poder. For characterization of the thermomechanical properties of the composite obtained, a mechanical tensile test, TG and DSC thermal analyses, SEM optical analysis coupled with EDS to verify the matrix/loads interface in the fracture region of the tensile test and quantification of the chemical elements found, and Curing Kinetics test to verify the influence of nano clay on the additive resin cure were performed. It was observed in the SEM/EDS analysis that there was not a good interaction of the interfaces of the fillers in relation to the matrix. In the EDS analysis the aluminum element was identified, characteristic of the Haloisite nanoparticle composition (Al2Si2O5 (OH)4). For the specimens with added halloysite nanoparticles, all showed maximum stress values above about 11 % to 19.2 % of the Resin/Cupuaçu specimens, but lower than the pure polymer by about 8 % to 15 %. In the TG and DSC analysis no significant variation of the thermal degradation process of the polyester/cure retardant was observed with the addition of 1 %, 2 % and 4 % of nanoparticles. In the Cure Kinetics analysis it was observed that the composition with 4 % of halloysite nanoparticle, had a higher activation energy than the others, then an increase in energy and after that the reduction of activation energy as the conversion increased, which indicates to us an acceleration reaction. This increase during the conversion path is due to the Nano clay. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-05-20T12:51:11Z 2022-05-18 2022-05-20T12:51:11Z 2022-04-28 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/bachelorThesis |
format |
bachelorThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://riu.ufam.edu.br/handle/prefix/6230 |
url |
http://riu.ufam.edu.br/handle/prefix/6230 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
An error occurred getting the license - uri. info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
An error occurred getting the license - uri. |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Brasil FT - Faculdade de Tecnologia Manaus-AM Engenharia de Materiais - Bacharelado - Manaus |
publisher.none.fl_str_mv |
Brasil FT - Faculdade de Tecnologia Manaus-AM Engenharia de Materiais - Bacharelado - Manaus |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFAM instname:Universidade Federal do Amazonas (UFAM) instacron:UFAM |
instname_str |
Universidade Federal do Amazonas (UFAM) |
instacron_str |
UFAM |
institution |
UFAM |
reponame_str |
Repositório Institucional da UFAM |
collection |
Repositório Institucional da UFAM |
repository.name.fl_str_mv |
Repositório Institucional da UFAM - Universidade Federal do Amazonas (UFAM) |
repository.mail.fl_str_mv |
|
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1798061057989672960 |