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dc.contributor.authorFraga Rivas, Iria
dc.contributor.authorMontserrat Ribas, Salvador
dc.contributor.authorHutchinson, John M.
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics
dc.date.accessioned2010-11-23T18:33:16Z
dc.date.available2010-11-23T18:33:16Z
dc.date.created2008-10
dc.date.issued2008-10
dc.identifier.citationFraga, I.; Montserrat, S.; Hutchinson, J.M. Vitrification during the Isothermal Cure of Thermosets: Comparison of Theoretical Simulations with Temperature-Modulated DSC and Dielectric Analysis. "Macromolecular chemistry and physics", Octubre 2008, vol. 209, núm. 19, p. 2003-2011.
dc.identifier.issn1022-1352
dc.identifier.urihttp://hdl.handle.net/2117/10383
dc.description.abstractVitrification during the isothermal cure of a thermoset, which is monitored by dynamic techniques such as temperature-modulated differential scanning calorimetry (TMDSC) or dielectric analysis (DEA), is analyzed in terms of its dependence on frequency. A simulation was used to obtain the vitrification time as a function of frequency, considering it as the time when the (frequency-dependent) glass transition temperature, Tg, of the curing system reaches the cure temperature. Simulations were carried out at different cure temperatures. Other parameters, such as the exponents (reaction orders) in the Kamal equation, l in the DiBenedetto equation (controlling the dependence of Tg on the degree of cure), and the activation energy for the frequency dependence of Tg, were also considered. The results are compared with those obtained experimentally by a TMDSC technique at low frequencies and by DEA at high frequencies. From the simulations it is found that the vitrification time decreases nonlinearly with log(frequency) in the low frequency range but approaches a linear dependence at high frequencies, in agreement with experimental data.
dc.format.extent9 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria mecànica::Motors::Motors tèrmics
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
dc.subject.lcshCalorimetry
dc.subject.lcshPlastics
dc.subject.lcshSimulation methods
dc.subject.lcshTemperature
dc.titleVitrification during the Isothermal Cure of Thermosets: Comparison of Theoretical Simulations with Temperature-Modulated DSC and Dielectric Analysis
dc.typeArticle
dc.subject.lemacCalorimetria
dc.subject.lemacPlàstics
dc.subject.lemacSimulació, Mètodes de
dc.subject.lemacDielèctrics
dc.subject.lemacTemperatura
dc.contributor.groupUniversitat Politècnica de Catalunya. TERFIQ - Grup de Termodinàmica i Fisico-Química
dc.identifier.doi10.1002/macp.200800217
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://www3.interscience.wiley.com/journal/121395617/abstract?CRETRY=1&SRETRY=0
dc.rights.accessOpen Access
drac.iddocument744620
dc.description.versionPostprint
upcommons.citation.authorFraga, I.; Montserrat, S.; Hutchinson, J.M.
upcommons.citation.publishedtrue
upcommons.citation.publicationNameMacromolecular chemistry and physics
upcommons.citation.volume209
upcommons.citation.number19
upcommons.citation.startingPage2003
upcommons.citation.endingPage2011
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