Vinyl ester resin modified with silicone-based additives. I. Mechanical properties

dc.creatorMazali, CAI
dc.creatorFelisberti, MI
dc.date2006
dc.date38412
dc.date2014-11-18T17:10:52Z
dc.date2015-11-26T17:52:50Z
dc.date2014-11-18T17:10:52Z
dc.date2015-11-26T17:52:50Z
dc.date.accessioned2018-03-29T00:36:22Z
dc.date.available2018-03-29T00:36:22Z
dc.identifierJournal Of Applied Polymer Science. John Wiley & Sons Inc, v. 99, n. 5, n. 2279, n. 2287, 2006.
dc.identifier0021-8995
dc.identifierWOS:000235099200041
dc.identifier10.1002/app.22770
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/72775
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/72775
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/72775
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1290362
dc.descriptionSilicone-based additives have been used as fire retardants for thermoplastics and present the advantages of improving the processing and impact resistance of the polymers. In this study, we used three different silicone-based additives as modifiers of a vinyl ester resin. The additives were fine powders made up of about 50 wt %, polydimethylsiloxane and 50 wt % silica. The differences among them were the functional groups inserted in the polymer chains and the size and size distribution of the particles. The additives were dispersed in resin containing 35 wt % styrene. To cure the mixture, a conventional catalyst and initiator were used, and the reaction was carried out in three ways, which differed in the curing temperature, post-curing temperature, time, and addition of dimethylaniline (DMA) as a promoter of the polyaddition reaction. Dynamic mechanical analysis showed that the phase behavior of the resulting composites depended strongly on the curing conditions. The flexural modulus of composites containing 5 wt % additive was lower than that for the cured resin. The impact resistance of the composites also depended on the curing conditions but not on the composition or size of the particle of the additive. The fracture morphologies of specimens subjected to impact resistance tests were different for samples cured in the presence or in the absence of DMA, which suggested that it influenced the mechanism of network formation. (c) 2005 Wiley Periodicals, Inc. J Appl Polym Sci 99:2279-2287, 2006
dc.description99
dc.description5
dc.description2279
dc.description2287
dc.languageen
dc.publisherJohn Wiley & Sons Inc
dc.publisherHoboken
dc.publisherEUA
dc.relationJournal Of Applied Polymer Science
dc.relationJ. Appl. Polym. Sci.
dc.rightsfechado
dc.rightshttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dc.sourceWeb of Science
dc.subjectadditives
dc.subjectmechanical properties
dc.subjectsilicones
dc.subjectthermosets
dc.subjectUnsaturated Polyester Resins
dc.subjectTtt Cure Diagram
dc.subjectBehavior
dc.subjectComposites
dc.subjectFracture
dc.subjectStyrene
dc.titleVinyl ester resin modified with silicone-based additives. I. Mechanical properties
dc.typeArtículos de revistas


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