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Thermal conductivity of epoxy resins filled with MWCNT and hydrotalcite clay: Experimental data and theoretical predictive modeling
Author(s) -
Romano Vittorio,
Naddeo Carlo,
Guadagno Liberata,
Vertuccio Luigi
Publication year - 2015
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.23355
Subject(s) - materials science , thermal conductivity , epoxy , carbon nanotube , composite material , nanocomposite , hydrotalcite , volume fraction , thermal , anisotropy , thermodynamics , organic chemistry , chemistry , physics , catalysis , quantum mechanics
In this work, the effect of hydrotalcite clay on the thermal conductivity of epoxy resin filled with carbon nanotubes (CNTs) has been studied. Thermal and morphological experiments show that the presence of hydrotalcite clay in a mesh of carbon nanotubes gives rise to aggregates and twisted bundles, resulting in a lower thermal conductivity of epoxy nanocomposites. Simple model for evaluation of the thermal conductivity of the composites is presented as analytical function of volume fraction, anisotropic thermal conductivities, aspect ratio, non‐straightness, and interfacial thermal resistance of the CNTs. The model predictions agree very well with the measured thermal conductivities of epoxy nanocomposites and confirm the hypothesis that the presence of a clay in a mesh of nanotubes results in a lower elongation of CNT. POLYM. COMPOS., 36:1118–1123, 2015. © 2014 Society of Plastics Engineers