Relationships between the curing conditions and some mechanical properties of hybrid thermosetting materials

Detalhes bibliográficos
Autor(a) principal: Dias Filho,Newton L.
Data de Publicação: 2006
Outros Autores: Cardoso,Celso X., Aquino,Hermes A. de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532006000500018
Resumo: The relationship between the heat of polymerization (deltaH) and activation energy (Ea) parameters, obtained by differential scanning calorimetry (DSC) and the ratio of epoxy resin to hardener of the thermosetting materials based on an organic-inorganic hybrid epoxy resin (OG) was investigated. Activation energy (Ea) and heat of polymerization (deltaH) increased with an increasing OG content, up to 70 wt%. Further increase in OG content to 80wt% reduced Ea and deltaH. Dynamic mechanical analysis indicates that the maximum cross-link density is obtained at 83 wt% OG, whereas fracture toughness and tensile modulus mechanical properties are maximized at 70 wt% OG.
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spelling Relationships between the curing conditions and some mechanical properties of hybrid thermosetting materialsdifferential scanning calorimetrysiloxaneepoxy resinsilsesquioxanesnanocompositesThe relationship between the heat of polymerization (deltaH) and activation energy (Ea) parameters, obtained by differential scanning calorimetry (DSC) and the ratio of epoxy resin to hardener of the thermosetting materials based on an organic-inorganic hybrid epoxy resin (OG) was investigated. Activation energy (Ea) and heat of polymerization (deltaH) increased with an increasing OG content, up to 70 wt%. Further increase in OG content to 80wt% reduced Ea and deltaH. Dynamic mechanical analysis indicates that the maximum cross-link density is obtained at 83 wt% OG, whereas fracture toughness and tensile modulus mechanical properties are maximized at 70 wt% OG.Sociedade Brasileira de Química2006-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532006000500018Journal of the Brazilian Chemical Society v.17 n.5 2006reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532006000500018info:eu-repo/semantics/openAccessDias Filho,Newton L.Cardoso,Celso X.Aquino,Hermes A. deeng2006-12-01T00:00:00Zoai:scielo:S0103-50532006000500018Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2006-12-01T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Relationships between the curing conditions and some mechanical properties of hybrid thermosetting materials
title Relationships between the curing conditions and some mechanical properties of hybrid thermosetting materials
spellingShingle Relationships between the curing conditions and some mechanical properties of hybrid thermosetting materials
Dias Filho,Newton L.
differential scanning calorimetry
siloxane
epoxy resin
silsesquioxanes
nanocomposites
title_short Relationships between the curing conditions and some mechanical properties of hybrid thermosetting materials
title_full Relationships between the curing conditions and some mechanical properties of hybrid thermosetting materials
title_fullStr Relationships between the curing conditions and some mechanical properties of hybrid thermosetting materials
title_full_unstemmed Relationships between the curing conditions and some mechanical properties of hybrid thermosetting materials
title_sort Relationships between the curing conditions and some mechanical properties of hybrid thermosetting materials
author Dias Filho,Newton L.
author_facet Dias Filho,Newton L.
Cardoso,Celso X.
Aquino,Hermes A. de
author_role author
author2 Cardoso,Celso X.
Aquino,Hermes A. de
author2_role author
author
dc.contributor.author.fl_str_mv Dias Filho,Newton L.
Cardoso,Celso X.
Aquino,Hermes A. de
dc.subject.por.fl_str_mv differential scanning calorimetry
siloxane
epoxy resin
silsesquioxanes
nanocomposites
topic differential scanning calorimetry
siloxane
epoxy resin
silsesquioxanes
nanocomposites
description The relationship between the heat of polymerization (deltaH) and activation energy (Ea) parameters, obtained by differential scanning calorimetry (DSC) and the ratio of epoxy resin to hardener of the thermosetting materials based on an organic-inorganic hybrid epoxy resin (OG) was investigated. Activation energy (Ea) and heat of polymerization (deltaH) increased with an increasing OG content, up to 70 wt%. Further increase in OG content to 80wt% reduced Ea and deltaH. Dynamic mechanical analysis indicates that the maximum cross-link density is obtained at 83 wt% OG, whereas fracture toughness and tensile modulus mechanical properties are maximized at 70 wt% OG.
publishDate 2006
dc.date.none.fl_str_mv 2006-10-01
dc.type.driver.fl_str_mv 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://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532006000500018
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532006000500018
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50532006000500018
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.17 n.5 2006
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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