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Glass fiber hybrid composites molded by RTM using a dispersion of carbon nanotubes/clay in epoxy

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Glass fiber hybrid composites molded by RTM using a dispersion of carbon nanotubes/clay in epoxy

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Título Glass fiber hybrid composites molded by RTM using a dispersion of carbon nanotubes/clay in epoxy
Autor Sene, Tarcísio Sanson
Silva, Laís Vasconcelos da
Amico, Sandro Campos
Becker, Daniela
Manzano Ramírez, Alejandro
Coelho, Luiz Antônio Ferreira
Abstract Nanocomposites based on epoxy and a mixture of clays and multi-walled carbon nanotubes (MWCNT) were produced by casting, and also molded by RTM using glass fibers as reinforcement, yielding a hybrid multi-scale micro/nanocomposite material. Two types of montmorillonite clays were used, natural (MMT-Na) and organophilic (MMT-30B). Higher viscosity was obtained for the mixture with MMT-30B and it was observed that this clay did not perform as well as the MMT-Na in helping the dispersion of the carbon nanotubes (CNT). The glass transition temperature (Tg) of the nanocomposites increased in up to 6 °C with the addition of MWCNT and up to 10 °C with the addition of MMT-30B, differently from the MMT-Na which did not alter the Tg of the material. By transmission electron microscopy, it was verified that more homogeneous dispersions and more intercalated structures were obtained with the MMT-30B than with the MMT-Na. Finally, the low clay content used and, especially, the very low MWCNT content, did not significantly alter the studied flexural properties.
Contido em Materials research : ibero-american journal of materials. São Carlos. Vol. 16, n. 5 (set./out. 2013), p. 1128-1133
Assunto Argila
Fibras de vidro
Moldagem por transferência de resina
Nanocompósitos
Nanotubos de carbono
Resina epoxi
[en] Carbon nanotubes
[en] Clay
[en] Epoxy
[en] Glass fiber
[en] Hybrid composites
[en] RTM
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/116793
Arquivos Descrição Formato
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