Caracterização de compostos elastoméricos á base de EPDM com cargas híbridas
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações do Mackenzie |
Texto Completo: | http://dspace.mackenzie.br/handle/10899/24234 |
Resumo: | Many studies have been done looking for new applications become viable for the ash of rice husks micronized. These studies include the use of this material as a reinforcing filler in elastomeric compounds to substitute other materials, to promote better mechanical performance such as tensile strength at break, hardness, elongation, and reduce the cost. The objective of this study was to obtain and characterize the elastomeric compounds based on EPDM and carbon black as filler and different concentrations of black ash of rice husks micronized and compare their performance with elastomeric compounds based on EPDM containing only black as filler smoke. The elastomer was processed in a calender with the respective filler, processing aids, plasticizers and curing system. After processing by calendering, the elastomeric compound has been tested that includes the rheological and rheometry testing by Dynamic Mechanical Thermal Analysis (DMTA). These tests showed, respectively, the parameters of speed of healing and glass transition temperature (Tg). Subsequently the material was cured in a hydraulic press with heating. To test resistance to oil, the specimens were immersed in ASTM oil 3 to measure the percentage of swelling. Were also performed mechanical tests of compression permanent deformation (compression set), tensile strength, tear strength, resilience and hardness Shore A. Through the results, it was observed that the addition of black ash rice hulls in the compounds modifies the glass transition temperature (Tg), but practically does not change the rheology during vulcanization. Compounds containing 20% black ash of rice husks showed better mechanical properties of tensile strength, tear strength and elongation. For higher concentrations, there is only the behavior of the filler. The addition of ash from rice hulls black also increases the hardness and improved oil swelling resistance and reduces permanent deformation to compression and resiliency. |
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2017-11-21T13:46:04Z2020-05-28T18:07:37Z2020-05-28T18:07:37Z2012-02-13CALEFFI, Fabíola da Silva Unzelte. Caracterização de compostos elastoméricos á base de EPDM com cargas híbridas. 2012. 72 f. Dissertação ( Engenharia de Materiais) - Universidade Presbiteriana Mackenzie, São Paulo .http://dspace.mackenzie.br/handle/10899/24234Many studies have been done looking for new applications become viable for the ash of rice husks micronized. These studies include the use of this material as a reinforcing filler in elastomeric compounds to substitute other materials, to promote better mechanical performance such as tensile strength at break, hardness, elongation, and reduce the cost. The objective of this study was to obtain and characterize the elastomeric compounds based on EPDM and carbon black as filler and different concentrations of black ash of rice husks micronized and compare their performance with elastomeric compounds based on EPDM containing only black as filler smoke. The elastomer was processed in a calender with the respective filler, processing aids, plasticizers and curing system. After processing by calendering, the elastomeric compound has been tested that includes the rheological and rheometry testing by Dynamic Mechanical Thermal Analysis (DMTA). These tests showed, respectively, the parameters of speed of healing and glass transition temperature (Tg). Subsequently the material was cured in a hydraulic press with heating. To test resistance to oil, the specimens were immersed in ASTM oil 3 to measure the percentage of swelling. Were also performed mechanical tests of compression permanent deformation (compression set), tensile strength, tear strength, resilience and hardness Shore A. Through the results, it was observed that the addition of black ash rice hulls in the compounds modifies the glass transition temperature (Tg), but practically does not change the rheology during vulcanization. Compounds containing 20% black ash of rice husks showed better mechanical properties of tensile strength, tear strength and elongation. For higher concentrations, there is only the behavior of the filler. The addition of ash from rice hulls black also increases the hardness and improved oil swelling resistance and reduces permanent deformation to compression and resiliency.Muitos estudos têm sido realizados procurando tornar viáveis novas aplicações para as cinzas de cascas de arroz micronizadas. Estes estudos incluem a utilização deste material como carga de reforço em compostos elastoméricos em substituição a outros materiais, para promover melhor desempenho mecânico como resistência à tração, à ruptura, dureza, elongação, além de diminuir o custo. Assim, o objetivo deste trabalho foi obter e caracterizar compostos elastoméricos a base de EPDM contendo como carga negro de fumo e diferentes concentrações de cinzas pretas de cascas de arroz micronizadas e comparar o seu desempenho com compostos elastoméricos a base de EPDM contendo como carga apenas negro de fumo. O elastômero foi processado em uma calandra junto com as respectivas cargas, auxiliares de processo, plastificante e sistema de cura. Após o processamento por calandragem, o composto elastomérico foi submetido a testes reológicos que inclui a reometria e ensaios por Análise Térmica Dinâmico-Mecânica (DMTA). Esses testes mostraram, respectivamente, os parâmetros de velocidade de cura e temperatura de transição vítrea (Tg). Posteriormente, o material foi vulcanizado em prensa hidráulica, com aquecimento. Para testes de resistência ao óleo, os corpos de prova foram imersos em óleo ASTM 3 para medir a porcentagem de inchamento. Foram também realizados os ensaios mecânicos de deformação permanente à compressão (compression set), resistência à tração, resistência ao rasgamento, resiliência e dureza Shore A. Por meio dos resultados obtidos, observou-se que a adição de cinzas pretas de cascas de arroz nos compostos altera a temperatura de transição vítrea (Tg), mas praticamente não altera a reometria durante a vulcanização. Os compostos contendo 20% cinzas pretas de cascas de arroz apresentaram melhores propriedades mecânicas de resistência à tração, rasgamento e alongamento. Para concentrações maiores, há o comportamento apenas de carga de enchimento. A adição de cinzas pretas de cascas de arroz também aumenta a dureza e melhora o inchamento em óleo e diminui a resistência à deformação permanente à compressão e a resiliência.application/pdfporUniversidade Presbiteriana MackenzieEngenharia de MateriaisUPMBrasilEscola de Engenharia Mackenzie (EE)http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessEPDMborrachascargasCNPQ::ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICACaracterização de compostos elastoméricos á base de EPDM com cargas híbridasinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisPereira, Nilson Casimirohttp://lattes.cnpq.br/0007203552115915Miranda, Leila Figueiredo dehttp://lattes.cnpq.br/0218222413589119Esper, Fábio Joséhttp://lattes.cnpq.br/9665897262541310http://lattes.cnpq.br/3779722601388861Caleffi, Fabíola da Silva Unzeltehttp://tede.mackenzie.br/jspui/retrieve/15291/Fab%c3%adola%20da%20Silva%20Unzelte%20Caleffi.pdf.jpghttp://tede.mackenzie.br/jspui/bitstream/tede/3403/5/Fab%C3%ADola%20da%20Silva%20Unzelte%20Caleffi.pdfEPDMrubberfillersreponame:Biblioteca Digital de Teses e Dissertações do Mackenzieinstname:Universidade Presbiteriana Mackenzie (MACKENZIE)instacron:MACKENZIE10899/242342020-05-28 15:07:37.479Biblioteca Digital de Teses e Dissertaçõeshttp://tede.mackenzie.br/jspui/PRI |
dc.title.por.fl_str_mv |
Caracterização de compostos elastoméricos á base de EPDM com cargas híbridas |
title |
Caracterização de compostos elastoméricos á base de EPDM com cargas híbridas |
spellingShingle |
Caracterização de compostos elastoméricos á base de EPDM com cargas híbridas Caleffi, Fabíola da Silva Unzelte EPDM borrachas cargas CNPQ::ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA |
title_short |
Caracterização de compostos elastoméricos á base de EPDM com cargas híbridas |
title_full |
Caracterização de compostos elastoméricos á base de EPDM com cargas híbridas |
title_fullStr |
Caracterização de compostos elastoméricos á base de EPDM com cargas híbridas |
title_full_unstemmed |
Caracterização de compostos elastoméricos á base de EPDM com cargas híbridas |
title_sort |
Caracterização de compostos elastoméricos á base de EPDM com cargas híbridas |
author |
Caleffi, Fabíola da Silva Unzelte |
author_facet |
Caleffi, Fabíola da Silva Unzelte |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Pereira, Nilson Casimiro |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/0007203552115915 |
dc.contributor.referee1.fl_str_mv |
Miranda, Leila Figueiredo de |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/0218222413589119 |
dc.contributor.referee2.fl_str_mv |
Esper, Fábio José |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/9665897262541310 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/3779722601388861 |
dc.contributor.author.fl_str_mv |
Caleffi, Fabíola da Silva Unzelte |
contributor_str_mv |
Pereira, Nilson Casimiro Miranda, Leila Figueiredo de Esper, Fábio José |
dc.subject.por.fl_str_mv |
EPDM borrachas cargas |
topic |
EPDM borrachas cargas CNPQ::ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA |
description |
Many studies have been done looking for new applications become viable for the ash of rice husks micronized. These studies include the use of this material as a reinforcing filler in elastomeric compounds to substitute other materials, to promote better mechanical performance such as tensile strength at break, hardness, elongation, and reduce the cost. The objective of this study was to obtain and characterize the elastomeric compounds based on EPDM and carbon black as filler and different concentrations of black ash of rice husks micronized and compare their performance with elastomeric compounds based on EPDM containing only black as filler smoke. The elastomer was processed in a calender with the respective filler, processing aids, plasticizers and curing system. After processing by calendering, the elastomeric compound has been tested that includes the rheological and rheometry testing by Dynamic Mechanical Thermal Analysis (DMTA). These tests showed, respectively, the parameters of speed of healing and glass transition temperature (Tg). Subsequently the material was cured in a hydraulic press with heating. To test resistance to oil, the specimens were immersed in ASTM oil 3 to measure the percentage of swelling. Were also performed mechanical tests of compression permanent deformation (compression set), tensile strength, tear strength, resilience and hardness Shore A. Through the results, it was observed that the addition of black ash rice hulls in the compounds modifies the glass transition temperature (Tg), but practically does not change the rheology during vulcanization. Compounds containing 20% black ash of rice husks showed better mechanical properties of tensile strength, tear strength and elongation. For higher concentrations, there is only the behavior of the filler. The addition of ash from rice hulls black also increases the hardness and improved oil swelling resistance and reduces permanent deformation to compression and resiliency. |
publishDate |
2012 |
dc.date.issued.fl_str_mv |
2012-02-13 |
dc.date.accessioned.fl_str_mv |
2017-11-21T13:46:04Z 2020-05-28T18:07:37Z |
dc.date.available.fl_str_mv |
2020-05-28T18:07:37Z |
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 |
CALEFFI, Fabíola da Silva Unzelte. Caracterização de compostos elastoméricos á base de EPDM com cargas híbridas. 2012. 72 f. Dissertação ( Engenharia de Materiais) - Universidade Presbiteriana Mackenzie, São Paulo . |
dc.identifier.uri.fl_str_mv |
http://dspace.mackenzie.br/handle/10899/24234 |
identifier_str_mv |
CALEFFI, Fabíola da Silva Unzelte. Caracterização de compostos elastoméricos á base de EPDM com cargas híbridas. 2012. 72 f. Dissertação ( Engenharia de Materiais) - Universidade Presbiteriana Mackenzie, São Paulo . |
url |
http://dspace.mackenzie.br/handle/10899/24234 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Presbiteriana Mackenzie |
dc.publisher.program.fl_str_mv |
Engenharia de Materiais |
dc.publisher.initials.fl_str_mv |
UPM |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Escola de Engenharia Mackenzie (EE) |
publisher.none.fl_str_mv |
Universidade Presbiteriana Mackenzie |
dc.source.none.fl_str_mv |
reponame:Biblioteca Digital de Teses e Dissertações do Mackenzie instname:Universidade Presbiteriana Mackenzie (MACKENZIE) instacron:MACKENZIE |
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Universidade Presbiteriana Mackenzie (MACKENZIE) |
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MACKENZIE |
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MACKENZIE |
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Biblioteca Digital de Teses e Dissertações do Mackenzie |
collection |
Biblioteca Digital de Teses e Dissertações do Mackenzie |
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