The influence of density on the mechanical response of reinforced high-density polyurethane foams : a statistical approach

Detalhes bibliográficos
Autor(a) principal: Kerche, Eduardo Fischer
Data de Publicação: 2022
Outros Autores: Cruz, Joziel Aparecido da, Amico, Sandro Campos
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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spelling 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
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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
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