Abstract:
A study on free nanohole volumes in particulate epoxy matrix composites as a function of the aluminum particles content is presented. Specifically, the influence of the filler content in the epoxy matrix on the nanohole volume is analyzed in terms of the mechanical and morphological properties of the composites fabricated. Nanoholes data were measured using positron annihilation lifetime spectroscopy recently published by the authors. Applying the Park-Earmme micromechanical model, these data are interpreted in terms of the thermal stresses generated during the curing process applied during fabrication. Some input parameters of the model were experimentally obtained. In order to obtain a satisfactory description of the evolution of the free nanohole volume in the whole range of filler contents, a contribution due to the matrix-particle interphases is taken into account in the micromechanical model. To this aim, specific information on the interphases was obtained using atomic force microscopy (AFM), scanning electron microscopy (SEM), differencital scanning calorimetry (DSC) and a free-constraint analysis of the positron lifetime data. © BME-PT.
Registro:
Documento: |
Artículo
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Título: | Influence of the filler content on the free nanohole volume in epoxy-based composites |
Autor: | Tognana, S.; Salgueiro, W.; Somoza, A.; Marzocca, A.J. |
Filiación: | IFIMAT - Universidad Nacional del Centro, Provincia de Buenos Aires, Pinto 399, (B7000GHG) Tandil, Argentina Comisión de Investigaciones Científicas de la Provincia, Buenos Aires calle, 526 entre 10 y 11, La Plata, Argentina LPMP y MC, Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Buenos Aires, Ciudad Universitaria, Pabellón I, C1428EGA Buenos Aires, Argentina
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Palabras clave: | Epoxy; Free volume; Polymer composites; Positron annihilation; Aluminum particle; Curing process; Epoxy; Epoxy matrices; Epoxy-based; Epoxy-matrix composite; Filler contents; Input parameter; Micromechanical model; Morphological properties; Nanoholes; Polymer composite; Positron annihilation lifetime spectroscopy; Positron lifetime; Scanning calorimetry; Specific information; Aluminum powder metallurgy; Atomic force microscopy; Composite micromechanics; Fillers; Free volume; Positron annihilation; Positron annihilation spectroscopy; Positrons; Scanning electron microscopy; Matrix algebra |
Año: | 2013
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Volumen: | 7
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Número: | 2
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Página de inicio: | 120
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Página de fin: | 133
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DOI: |
http://dx.doi.org/10.3144/expresspolymlett.2013.12 |
Título revista: | Express Polymer Letters
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Título revista abreviado: | Express Polym. Lett.
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ISSN: | 1788618X
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1788618X_v7_n2_p120_Tognana |
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Citas:
---------- APA ----------
Tognana, S., Salgueiro, W., Somoza, A. & Marzocca, A.J.
(2013)
. Influence of the filler content on the free nanohole volume in epoxy-based composites. Express Polymer Letters, 7(2), 120-133.
http://dx.doi.org/10.3144/expresspolymlett.2013.12---------- CHICAGO ----------
Tognana, S., Salgueiro, W., Somoza, A., Marzocca, A.J.
"Influence of the filler content on the free nanohole volume in epoxy-based composites"
. Express Polymer Letters 7, no. 2
(2013) : 120-133.
http://dx.doi.org/10.3144/expresspolymlett.2013.12---------- MLA ----------
Tognana, S., Salgueiro, W., Somoza, A., Marzocca, A.J.
"Influence of the filler content on the free nanohole volume in epoxy-based composites"
. Express Polymer Letters, vol. 7, no. 2, 2013, pp. 120-133.
http://dx.doi.org/10.3144/expresspolymlett.2013.12---------- VANCOUVER ----------
Tognana, S., Salgueiro, W., Somoza, A., Marzocca, A.J. Influence of the filler content on the free nanohole volume in epoxy-based composites. Express Polym. Lett. 2013;7(2):120-133.
http://dx.doi.org/10.3144/expresspolymlett.2013.12