Vinyl ester resin modified with silicone-based additives: III. Curing kinetics

dc.creatorMazali, CAI
dc.creatorFelisberti, MI
dc.date2009
dc.dateAUG
dc.date2014-11-18T17:12:21Z
dc.date2015-11-26T16:57:26Z
dc.date2014-11-18T17:12:21Z
dc.date2015-11-26T16:57:26Z
dc.date.accessioned2018-03-28T23:45:00Z
dc.date.available2018-03-28T23:45:00Z
dc.identifierEuropean Polymer Journal. Pergamon-elsevier Science Ltd, v. 45, n. 8, n. 2222, n. 2233, 2009.
dc.identifier0014-3057
dc.identifierWOS:000269040700008
dc.identifier10.1016/j.eurpolymj.2009.05.022
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/72777
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/72777
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/72777
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1277664
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionSilicone-based additives have been used as fire retardants for thermoplastics with the advantageous of improving the processing and the impact resistance of the polymers. In this work the influence of these additives on the curing kinetics of a vinyl ester resin was studied. Three silicone-based additives were used to modify the properties of the vinyl ester resin. The principal differences between them are the functional groups inserted in the polydimethylsiloxane chains. The additives were dispersed in the resin containing a commonly used mixture of initiator and catalyst methylethyl Ketone peroxide and cobalt-II octanoate, respectively. For some reactional mixtures N,N-dimethylaniline (DMA) was used as promoter. Differential scanning calorimetry (DSC) was used to perform the non-isothermal cure of the non-modified resin and of the resins modified with the additives. Ozawas, Kissingers and Ozawas iso-conversional methods were used to determine the kinetic parameters. For resin cured in absence of DMA the silicone-based additives act as retardants for the curing reaction, a typical diluent effect, while in presence of this promoter the reaction enthalpy as well as the reaction rate were improved. This effect was attributed to specific interactions and reactions between DMA and the silicone-based additives that changed the curing mechanism as well as controlled the phase segregation. (C) 2009 Elsevier Ltd. All rights reserved.
dc.description45
dc.description8
dc.description2222
dc.description2233
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionFAPESP [98/13016-0]
dc.languageen
dc.publisherPergamon-elsevier Science Ltd
dc.publisherOxford
dc.publisherInglaterra
dc.relationEuropean Polymer Journal
dc.relationEur. Polym. J.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectVinyl ester resin
dc.subjectNon-isothermal curing
dc.subjectKinetics
dc.subjectCoupling agents
dc.subjectAdditives
dc.subjectPolysiloxane
dc.subjectUnsaturated Polyester Resins
dc.subjectDifferential Scanning Calorimetry
dc.subjectMechanical-properties
dc.subjectBenzoyl Peroxide
dc.subjectCure Reaction
dc.subjectBehavior
dc.subjectPolymerization
dc.subjectTemperature
dc.subjectInitiator
dc.subjectStyrene
dc.titleVinyl ester resin modified with silicone-based additives: III. Curing kinetics
dc.typeArtículos de revistas


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