The influence of density on the mechanical response of reinforced high-density polyurethane foams : a statistical approach
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/10183/254305 |
Resumo: | In this work,rigid polyurethane foams(RPUF)reinforced bymicrofibrillated cellulose (MFC) were manufactured usingthe freerising method and also under confinement inside a closed mould, aiming to increase apparent densityand improvemechanical response. Neat RPUF were also manufactured for comparison.The mechanical response, evaluated by compression (following ASTMD1621 standard) tests were correlated with the final composite apparent density (evaluated following ASTM D1622standard). Simple linear regression statistical models, based onF-test, were developed using stat graphics software, aiming to understand and correlatethe increment in densityand its influence on the improvement in mechanical response. Different models were developed to describe the foam behavior. The mainresults showa more significant influence of the density onstrength thanstiffnessfor the neat RPUF, unlike the MFC-reinforced RPUF, which presented an oppositeresponse. These effects couldbe caused by the lowercontent of voids whenthe foams were produced under confinement, and bythe greater crosslinkdensity, when MFC was added. |
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Kerche, Eduardo FischerCruz, Joziel Aparecido daAmico, Sandro Campos2023-02-07T05:02:40Z20221929-5995http://hdl.handle.net/10183/254305001158106In this work,rigid polyurethane foams(RPUF)reinforced bymicrofibrillated cellulose (MFC) were manufactured usingthe freerising method and also under confinement inside a closed mould, aiming to increase apparent densityand improvemechanical response. Neat RPUF were also manufactured for comparison.The mechanical response, evaluated by compression (following ASTMD1621 standard) tests were correlated with the final composite apparent density (evaluated following ASTM D1622standard). Simple linear regression statistical models, based onF-test, were developed using stat graphics software, aiming to understand and correlatethe increment in densityand its influence on the improvement in mechanical response. Different models were developed to describe the foam behavior. The mainresults showa more significant influence of the density onstrength thanstiffnessfor the neat RPUF, unlike the MFC-reinforced RPUF, which presented an oppositeresponse. These effects couldbe caused by the lowercontent of voids whenthe foams were produced under confinement, and bythe greater crosslinkdensity, when MFC was added.application/pdfengJournal of research updates in polymer science [recurso eletrônico]. [Ontario]. Vol. 11 (2022), p. 31-35Espuma de poliuretanoCeluloseRigid polyurethane foamsHigh-density foamsMicro fibrillated celluloseCellular compositesThe influence of density on the mechanical response of reinforced high-density polyurethane foams : a statistical approachEstrangeiroinfo: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:UFRGSTEXT001158106.pdf.txt001158106.pdf.txtExtracted Texttext/plain0http://www.lume.ufrgs.br/bitstream/10183/254305/2/001158106.pdf.txtd41d8cd98f00b204e9800998ecf8427eMD52ORIGINAL001158106.pdfTexto completo (inglês)application/pdf1713417http://www.lume.ufrgs.br/bitstream/10183/254305/1/001158106.pdf55a3191ededd40edeeafe9cca84273a2MD5110183/2543052023-02-08 06:03:31.41474oai:www.lume.ufrgs.br:10183/254305Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-02-08T08:03:31Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
The influence of density on the mechanical response of reinforced high-density polyurethane foams : a statistical approach |
title |
The influence of density on the mechanical response of reinforced high-density polyurethane foams : a statistical approach |
spellingShingle |
The influence of density on the mechanical response of reinforced high-density polyurethane foams : a statistical approach Kerche, Eduardo Fischer Espuma de poliuretano Celulose Rigid polyurethane foams High-density foams Micro fibrillated cellulose Cellular composites |
title_short |
The influence of density on the mechanical response of reinforced high-density polyurethane foams : a statistical approach |
title_full |
The influence of density on the mechanical response of reinforced high-density polyurethane foams : a statistical approach |
title_fullStr |
The influence of density on the mechanical response of reinforced high-density polyurethane foams : a statistical approach |
title_full_unstemmed |
The influence of density on the mechanical response of reinforced high-density polyurethane foams : a statistical approach |
title_sort |
The influence of density on the mechanical response of reinforced high-density polyurethane foams : a statistical approach |
author |
Kerche, Eduardo Fischer |
author_facet |
Kerche, Eduardo Fischer Cruz, Joziel Aparecido da Amico, Sandro Campos |
author_role |
author |
author2 |
Cruz, Joziel Aparecido da Amico, Sandro Campos |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Kerche, Eduardo Fischer Cruz, Joziel Aparecido da Amico, Sandro Campos |
dc.subject.por.fl_str_mv |
Espuma de poliuretano Celulose |
topic |
Espuma de poliuretano Celulose Rigid polyurethane foams High-density foams Micro fibrillated cellulose Cellular composites |
dc.subject.eng.fl_str_mv |
Rigid polyurethane foams High-density foams Micro fibrillated cellulose Cellular composites |
description |
In this work,rigid polyurethane foams(RPUF)reinforced bymicrofibrillated cellulose (MFC) were manufactured usingthe freerising method and also under confinement inside a closed mould, aiming to increase apparent densityand improvemechanical response. Neat RPUF were also manufactured for comparison.The mechanical response, evaluated by compression (following ASTMD1621 standard) tests were correlated with the final composite apparent density (evaluated following ASTM D1622standard). Simple linear regression statistical models, based onF-test, were developed using stat graphics software, aiming to understand and correlatethe increment in densityand its influence on the improvement in mechanical response. Different models were developed to describe the foam behavior. The mainresults showa more significant influence of the density onstrength thanstiffnessfor the neat RPUF, unlike the MFC-reinforced RPUF, which presented an oppositeresponse. These effects couldbe caused by the lowercontent of voids whenthe foams were produced under confinement, and bythe greater crosslinkdensity, when MFC was added. |
publishDate |
2022 |
dc.date.issued.fl_str_mv |
2022 |
dc.date.accessioned.fl_str_mv |
2023-02-07T05:02:40Z |
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/10183/254305 |
dc.identifier.issn.pt_BR.fl_str_mv |
1929-5995 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001158106 |
identifier_str_mv |
1929-5995 001158106 |
url |
http://hdl.handle.net/10183/254305 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Journal of research updates in polymer science [recurso eletrônico]. [Ontario]. Vol. 11 (2022), p. 31-35 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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