dc.contributorPessan, Luiz Antonio
dc.contributorhttp://lattes.cnpq.br/8276650236213537
dc.contributorPassador, Fabio Roberto
dc.contributorhttp://lattes.cnpq.br/0152213852695153
dc.contributorhttp://lattes.cnpq.br/6407713491620749
dc.creatorBackes, Eduardo Henrique
dc.date.accessioned2017-03-02T12:49:51Z
dc.date.available2017-03-02T12:49:51Z
dc.date.created2017-03-02T12:49:51Z
dc.date.issued2016-07-11
dc.identifierBACKES, Eduardo Henrique. Desenvolvimento de nanocompósitos híbridos de epóxi/NTCPM/cargas minerais e avaliação das propriedades mecânicas, elétricas e térmicas. 2016. Dissertação (Mestrado em Ciência e Engenharia de Materiais) – Universidade Federal de São Carlos, São Carlos, 2016. Disponível em: https://repositorio.ufscar.br/handle/ufscar/8537.
dc.identifierhttps://repositorio.ufscar.br/handle/ufscar/8537
dc.description.abstractIn the present work epoxy/ MWCNT/ mineral fillers nanocomposites were obtained using ultrasonication and calendering. The effect of addition of mineral filler (calcium carbonate, montmorillonite and sepiolite) in electrical, mechanical and thermal properties of epoxy/ MWCNT were analyzed. Two different CNT were studied, with different aspect ration and purity, however only Nanocyl CNT’s presented improvement in the nanocomposites electrical properties and for that reason was employed for hybrid epoxy/ MWCNT/ mineral nanocomposites production. The electrical percolation threshold was determined as 0.04 wt% and for 0.3 wt% the electrical conductivity reached 1.29X10-2 S/m. The addition of calcium carbonate and montmorillonite improved electrical conductivity for epoxy nanocomposites produced with 0.05 wt% CNT and the same behavior was observed for epoxy/ MWCNT / sepiolite nanocomposites at 0.1 wt% CNT. The epoxy/ MWCNT nanocomposite at 0.05% CNT when produzed via calendering presented improvement in the electrical conductivity compared to the same nanocomposite produced via ultrasonication. For epoxy/ MWCNT at 0.05 wt% of CNT, the addition of calcium carbonate in the nanocomposite led to an electrical conductivity 1 decade higher than the epoxy/ 0.05 wt% CNT nanocomposite produced via calendering. The mineral fillers also modified thermal and mechanical behavior of the nanocomposites, and improvements in flexural modulus, thermal stability and Tg were observed.
dc.languagepor
dc.publisherUniversidade Federal de São Carlos
dc.publisherUFSCar
dc.publisherPrograma de Pós-Graduação em Ciência e Engenharia de Materiais - PPGCEM
dc.publisherCâmpus São Carlos
dc.rightsAcesso aberto
dc.subjectEpóxi
dc.subjectNanotubos de carbono
dc.subjectNanocompósitos epóxi/NTCPM
dc.subjectPropriedades elétricas
dc.subjectEpoxy
dc.subjectCarbon nanotubes
dc.subjectEpoxy/MWCNT nanocomposites
dc.subjectElectrical properties
dc.titleDesenvolvimento de nanocompósitos híbridos de epóxi/NTCPM/cargas minerais e avaliação das propriedades mecânicas, elétricas e térmicas
dc.typeTesis


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