Studies on thermal and viscoelastic properties of vinyl ester resin and its composites with glass fiber
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/164745 |
Resumo: | Vinyl ester resins are widely used in sandwich composite structures. Because of their good resistance to chemicals, flexibility and easy processing, these sandwich are extensively applied in the marine sector. These composites are typically manufactured by liquid molding processes, especially infusion. In this study, RTM light was used to inject the polymeric resin into the mold cavity, flowing in the space between the impermeable core and the mold walls, where the fibrous medium was. In this process, viscosity, gel time and curing time of the resin are very important parameters. This work addressed the curing and post-curing characteristics of a vinyl ester resin, and also the characteristics of neat and reinforced vinyl ester using dynamic mechanical analysis (DMA). The increase in shear rate did not significantly influence resin viscosity within the studied range. Differential scanning calorimetry showed the efficiency of the post-curing stage, with the decrease in residual enthalpy. With DMA, it was possible to determine gel time and gel temperature, which yielded similar values to those found by the SPI (Society of the Plastics Industry) method, indicating that the simpler SPI method can be reliably used for that. |
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Garay, André CechinPaese, Lucas TosinSouza, Jeferson ÁvilaAmico, Sandro Campos2017-08-03T02:40:48Z20151517-7076http://hdl.handle.net/10183/164745001015699Vinyl ester resins are widely used in sandwich composite structures. Because of their good resistance to chemicals, flexibility and easy processing, these sandwich are extensively applied in the marine sector. These composites are typically manufactured by liquid molding processes, especially infusion. In this study, RTM light was used to inject the polymeric resin into the mold cavity, flowing in the space between the impermeable core and the mold walls, where the fibrous medium was. In this process, viscosity, gel time and curing time of the resin are very important parameters. This work addressed the curing and post-curing characteristics of a vinyl ester resin, and also the characteristics of neat and reinforced vinyl ester using dynamic mechanical analysis (DMA). The increase in shear rate did not significantly influence resin viscosity within the studied range. Differential scanning calorimetry showed the efficiency of the post-curing stage, with the decrease in residual enthalpy. With DMA, it was possible to determine gel time and gel temperature, which yielded similar values to those found by the SPI (Society of the Plastics Industry) method, indicating that the simpler SPI method can be reliably used for that.application/pdfengRevista matéria [recurso eletrônico]. Rio de Janeiro. vol. 20, n. 1, artigo 11577 (2015), p. 64-71Moldagem por transferência de resinaViscoelasticidadeResinasVinyl esterDMARTM lightSandwich compositesStudies on thermal and viscoelastic properties of vinyl ester resin and its composites with glass fiberinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL001015699.pdfTexto completo (inglês)application/pdf959711http://www.lume.ufrgs.br/bitstream/10183/164745/1/001015699.pdfaeb9509269c7592667d03a1206d1f4cfMD51TEXT001015699.pdf.txt001015699.pdf.txtExtracted Texttext/plain21511http://www.lume.ufrgs.br/bitstream/10183/164745/2/001015699.pdf.txt537af9d82f19c450ef69675df3e6c919MD52THUMBNAIL001015699.pdf.jpg001015699.pdf.jpgGenerated Thumbnailimage/jpeg1702http://www.lume.ufrgs.br/bitstream/10183/164745/3/001015699.pdf.jpgf50424352744bad827fe8acf445a4854MD5310183/1647452018-10-05 07:48:39.693oai:www.lume.ufrgs.br:10183/164745Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-05T10:48:39Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Studies on thermal and viscoelastic properties of vinyl ester resin and its composites with glass fiber |
title |
Studies on thermal and viscoelastic properties of vinyl ester resin and its composites with glass fiber |
spellingShingle |
Studies on thermal and viscoelastic properties of vinyl ester resin and its composites with glass fiber Garay, André Cechin Moldagem por transferência de resina Viscoelasticidade Resinas Vinyl ester DMA RTM light Sandwich composites |
title_short |
Studies on thermal and viscoelastic properties of vinyl ester resin and its composites with glass fiber |
title_full |
Studies on thermal and viscoelastic properties of vinyl ester resin and its composites with glass fiber |
title_fullStr |
Studies on thermal and viscoelastic properties of vinyl ester resin and its composites with glass fiber |
title_full_unstemmed |
Studies on thermal and viscoelastic properties of vinyl ester resin and its composites with glass fiber |
title_sort |
Studies on thermal and viscoelastic properties of vinyl ester resin and its composites with glass fiber |
author |
Garay, André Cechin |
author_facet |
Garay, André Cechin Paese, Lucas Tosin Souza, Jeferson Ávila Amico, Sandro Campos |
author_role |
author |
author2 |
Paese, Lucas Tosin Souza, Jeferson Ávila Amico, Sandro Campos |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Garay, André Cechin Paese, Lucas Tosin Souza, Jeferson Ávila Amico, Sandro Campos |
dc.subject.por.fl_str_mv |
Moldagem por transferência de resina Viscoelasticidade Resinas |
topic |
Moldagem por transferência de resina Viscoelasticidade Resinas Vinyl ester DMA RTM light Sandwich composites |
dc.subject.eng.fl_str_mv |
Vinyl ester DMA RTM light Sandwich composites |
description |
Vinyl ester resins are widely used in sandwich composite structures. Because of their good resistance to chemicals, flexibility and easy processing, these sandwich are extensively applied in the marine sector. These composites are typically manufactured by liquid molding processes, especially infusion. In this study, RTM light was used to inject the polymeric resin into the mold cavity, flowing in the space between the impermeable core and the mold walls, where the fibrous medium was. In this process, viscosity, gel time and curing time of the resin are very important parameters. This work addressed the curing and post-curing characteristics of a vinyl ester resin, and also the characteristics of neat and reinforced vinyl ester using dynamic mechanical analysis (DMA). The increase in shear rate did not significantly influence resin viscosity within the studied range. Differential scanning calorimetry showed the efficiency of the post-curing stage, with the decrease in residual enthalpy. With DMA, it was possible to determine gel time and gel temperature, which yielded similar values to those found by the SPI (Society of the Plastics Industry) method, indicating that the simpler SPI method can be reliably used for that. |
publishDate |
2015 |
dc.date.issued.fl_str_mv |
2015 |
dc.date.accessioned.fl_str_mv |
2017-08-03T02:40:48Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/other |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/164745 |
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1517-7076 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001015699 |
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1517-7076 001015699 |
url |
http://hdl.handle.net/10183/164745 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Revista matéria [recurso eletrônico]. Rio de Janeiro. vol. 20, n. 1, artigo 11577 (2015), p. 64-71 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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