Characterization of free volume in particulate-filled epoxy resin by means of dynamic mechanical analysis and positron annihilation lifetime spectroscopy

Dynamic mechanical measurements were carried out in composites made of quartz powder-filled epoxy resin at frequencies between 7 and 600 Hz and temperatures between 290 and 460 K. Using the William-Landel-Ferry relationship, master curves of the dynamic moduli were obtained as a function of the freq...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Marzocca, A.J., Somoza, A., Goyanes, S.N., Salgueiro, W., König, P.
Formato: JOUR
Materias:
Dynamic mechanical analysis
Free volume
Internal residual stress
Positron annihilation lifetime spectroscopy
Quartz-filled epoxy resin
Activation energy
Characterization
Composite materials
Positron annihilation spectroscopy
Residual stresses
Particulate-filled epoxy resins
Epoxy resins
epoxy resin
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09598103_v51_n11_p1277_Marzocca
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_09598103_v51_n11_p1277_Marzocca
record_format dspace
spelling todo:paper_09598103_v51_n11_p1277_Marzocca2023-10-03T15:53:12Z Characterization of free volume in particulate-filled epoxy resin by means of dynamic mechanical analysis and positron annihilation lifetime spectroscopy Marzocca, A.J. Somoza, A. Goyanes, S.N. Salgueiro, W. König, P. Dynamic mechanical analysis Free volume Internal residual stress Positron annihilation lifetime spectroscopy Quartz-filled epoxy resin Activation energy Characterization Composite materials Dynamic mechanical analysis Positron annihilation spectroscopy Residual stresses Particulate-filled epoxy resins Epoxy resins epoxy resin Dynamic mechanical measurements were carried out in composites made of quartz powder-filled epoxy resin at frequencies between 7 and 600 Hz and temperatures between 290 and 460 K. Using the William-Landel-Ferry relationship, master curves of the dynamic moduli were obtained as a function of the frequency and the related coefficients, c 0 1 and c 0 2 , were evaluated. The activation energy of the α relaxation was calculated and the influence of the filler content on the free volume was determined. The average free volumes were also measured in the composites by means of positron annihilation lifetime spectroscopy (PALS). Considering the constituent phases and the conditions of cure, the internal residual stresses in the matrix were evaluated and their influence on the free volume is discussed. Both DMA and PALS show similar results of the dependence of free volume with the filler content in the composite. © 2002 Society of Chemical Industry. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09598103_v51_n11_p1277_Marzocca
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Dynamic mechanical analysis
Free volume
Internal residual stress
Positron annihilation lifetime spectroscopy
Quartz-filled epoxy resin
Activation energy
Characterization
Composite materials
Dynamic mechanical analysis
Positron annihilation spectroscopy
Residual stresses
Particulate-filled epoxy resins
Epoxy resins
epoxy resin
spellingShingle Dynamic mechanical analysis
Free volume
Internal residual stress
Positron annihilation lifetime spectroscopy
Quartz-filled epoxy resin
Activation energy
Characterization
Composite materials
Dynamic mechanical analysis
Positron annihilation spectroscopy
Residual stresses
Particulate-filled epoxy resins
Epoxy resins
epoxy resin
Marzocca, A.J.
Somoza, A.
Goyanes, S.N.
Salgueiro, W.
König, P.
Characterization of free volume in particulate-filled epoxy resin by means of dynamic mechanical analysis and positron annihilation lifetime spectroscopy
topic_facet Dynamic mechanical analysis
Free volume
Internal residual stress
Positron annihilation lifetime spectroscopy
Quartz-filled epoxy resin
Activation energy
Characterization
Composite materials
Dynamic mechanical analysis
Positron annihilation spectroscopy
Residual stresses
Particulate-filled epoxy resins
Epoxy resins
epoxy resin
description Dynamic mechanical measurements were carried out in composites made of quartz powder-filled epoxy resin at frequencies between 7 and 600 Hz and temperatures between 290 and 460 K. Using the William-Landel-Ferry relationship, master curves of the dynamic moduli were obtained as a function of the frequency and the related coefficients, c 0 1 and c 0 2 , were evaluated. The activation energy of the α relaxation was calculated and the influence of the filler content on the free volume was determined. The average free volumes were also measured in the composites by means of positron annihilation lifetime spectroscopy (PALS). Considering the constituent phases and the conditions of cure, the internal residual stresses in the matrix were evaluated and their influence on the free volume is discussed. Both DMA and PALS show similar results of the dependence of free volume with the filler content in the composite. © 2002 Society of Chemical Industry.
format JOUR
author Marzocca, A.J.
Somoza, A.
Goyanes, S.N.
Salgueiro, W.
König, P.
author_facet Marzocca, A.J.
Somoza, A.
Goyanes, S.N.
Salgueiro, W.
König, P.
author_sort Marzocca, A.J.
title Characterization of free volume in particulate-filled epoxy resin by means of dynamic mechanical analysis and positron annihilation lifetime spectroscopy
title_short Characterization of free volume in particulate-filled epoxy resin by means of dynamic mechanical analysis and positron annihilation lifetime spectroscopy
title_full Characterization of free volume in particulate-filled epoxy resin by means of dynamic mechanical analysis and positron annihilation lifetime spectroscopy
title_fullStr Characterization of free volume in particulate-filled epoxy resin by means of dynamic mechanical analysis and positron annihilation lifetime spectroscopy
title_full_unstemmed Characterization of free volume in particulate-filled epoxy resin by means of dynamic mechanical analysis and positron annihilation lifetime spectroscopy
title_sort characterization of free volume in particulate-filled epoxy resin by means of dynamic mechanical analysis and positron annihilation lifetime spectroscopy
url http://hdl.handle.net/20.500.12110/paper_09598103_v51_n11_p1277_Marzocca
work_keys_str_mv AT marzoccaaj characterizationoffreevolumeinparticulatefilledepoxyresinbymeansofdynamicmechanicalanalysisandpositronannihilationlifetimespectroscopy
AT somozaa characterizationoffreevolumeinparticulatefilledepoxyresinbymeansofdynamicmechanicalanalysisandpositronannihilationlifetimespectroscopy
AT goyanessn characterizationoffreevolumeinparticulatefilledepoxyresinbymeansofdynamicmechanicalanalysisandpositronannihilationlifetimespectroscopy
AT salgueirow characterizationoffreevolumeinparticulatefilledepoxyresinbymeansofdynamicmechanicalanalysisandpositronannihilationlifetimespectroscopy
AT konigp characterizationoffreevolumeinparticulatefilledepoxyresinbymeansofdynamicmechanicalanalysisandpositronannihilationlifetimespectroscopy
_version_ 1807321299072057344

Ejemplares similares