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Heat Dissipation in Epoxy/Amine-Based Gradient Composites with Alumina Particles: A Critical Evaluation of Thermal Conductivity Measurements

For the design of the next generation of microelectronic packages, thermal management is one of the key aspects and must be met by the development of polymers with enhanced thermal conductivity. While all polymer classes show a very low thermal conductivity, this shortcoming can be compensated for b...

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Autores principales: Morak, Matthias, Marx, Philipp, Gschwandl, Mario, Fuchs, Peter Filipp, Pfost, Martin, Wiesbrock, Frank
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6403572/
https://www.ncbi.nlm.nih.gov/pubmed/30961056
http://dx.doi.org/10.3390/polym10101131
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author Morak, Matthias
Marx, Philipp
Gschwandl, Mario
Fuchs, Peter Filipp
Pfost, Martin
Wiesbrock, Frank
author_facet Morak, Matthias
Marx, Philipp
Gschwandl, Mario
Fuchs, Peter Filipp
Pfost, Martin
Wiesbrock, Frank
author_sort Morak, Matthias
collection PubMed
description For the design of the next generation of microelectronic packages, thermal management is one of the key aspects and must be met by the development of polymers with enhanced thermal conductivity. While all polymer classes show a very low thermal conductivity, this shortcoming can be compensated for by the addition of fillers, yielding polymer-based composite materials with high thermal conductivity. The inorganic fillers, however, are often available only in submicron- and micron-scaled dimensions and, consequently, can sediment during the curing reaction of the polymer matrix. In this study, an epoxy/amine resin was filled with nano- and submicron-scaled alumina particles, yielding a gradient composite. It was found that the thermal conductivity according to laser flash analysis of a sliced specimen ranged from 0.25 to 0.45 W·m(−1)·K(−1) at room temperature. If the thermal conductivity of an uncut specimen was measured with a guarded heat flow meter, the ‘averaged’ thermal conductivity was measured to be only 0.25 W·m(−1)·K(−1). Finite element analysis revealed that the heat dissipation through a gradient composite was of intermediate speed in comparison with homogeneous composites exhibiting a non-gradient thermal conductivity of 0.25 and 0.45 W·m(−1)·K(−1).
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spelling pubmed-64035722019-04-02 Heat Dissipation in Epoxy/Amine-Based Gradient Composites with Alumina Particles: A Critical Evaluation of Thermal Conductivity Measurements Morak, Matthias Marx, Philipp Gschwandl, Mario Fuchs, Peter Filipp Pfost, Martin Wiesbrock, Frank Polymers (Basel) Article For the design of the next generation of microelectronic packages, thermal management is one of the key aspects and must be met by the development of polymers with enhanced thermal conductivity. While all polymer classes show a very low thermal conductivity, this shortcoming can be compensated for by the addition of fillers, yielding polymer-based composite materials with high thermal conductivity. The inorganic fillers, however, are often available only in submicron- and micron-scaled dimensions and, consequently, can sediment during the curing reaction of the polymer matrix. In this study, an epoxy/amine resin was filled with nano- and submicron-scaled alumina particles, yielding a gradient composite. It was found that the thermal conductivity according to laser flash analysis of a sliced specimen ranged from 0.25 to 0.45 W·m(−1)·K(−1) at room temperature. If the thermal conductivity of an uncut specimen was measured with a guarded heat flow meter, the ‘averaged’ thermal conductivity was measured to be only 0.25 W·m(−1)·K(−1). Finite element analysis revealed that the heat dissipation through a gradient composite was of intermediate speed in comparison with homogeneous composites exhibiting a non-gradient thermal conductivity of 0.25 and 0.45 W·m(−1)·K(−1). MDPI 2018-10-11 /pmc/articles/PMC6403572/ /pubmed/30961056 http://dx.doi.org/10.3390/polym10101131 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Morak, Matthias
Marx, Philipp
Gschwandl, Mario
Fuchs, Peter Filipp
Pfost, Martin
Wiesbrock, Frank
Heat Dissipation in Epoxy/Amine-Based Gradient Composites with Alumina Particles: A Critical Evaluation of Thermal Conductivity Measurements
title Heat Dissipation in Epoxy/Amine-Based Gradient Composites with Alumina Particles: A Critical Evaluation of Thermal Conductivity Measurements
title_full Heat Dissipation in Epoxy/Amine-Based Gradient Composites with Alumina Particles: A Critical Evaluation of Thermal Conductivity Measurements
title_fullStr Heat Dissipation in Epoxy/Amine-Based Gradient Composites with Alumina Particles: A Critical Evaluation of Thermal Conductivity Measurements
title_full_unstemmed Heat Dissipation in Epoxy/Amine-Based Gradient Composites with Alumina Particles: A Critical Evaluation of Thermal Conductivity Measurements
title_short Heat Dissipation in Epoxy/Amine-Based Gradient Composites with Alumina Particles: A Critical Evaluation of Thermal Conductivity Measurements
title_sort heat dissipation in epoxy/amine-based gradient composites with alumina particles: a critical evaluation of thermal conductivity measurements
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6403572/
https://www.ncbi.nlm.nih.gov/pubmed/30961056
http://dx.doi.org/10.3390/polym10101131
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