`
`Heat Transfer in Polypropylene-Based Foams
`Produced Using Different Foaming Processesi
`
`1. Marcelo Antunes1’*,
`2. Jose Ignacio Velascol,
`3. Vera Realinhol ,
`4. Antonio B. Martinezl,
`5. Miguel-Angel Rodriguez-Pérezz and
`6. Jose Antonio de Sajaz
`
`Article first published online: 21 AUG 2009
`
`DOI: 10.1002/adem.200900129
`
`Copyright © 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
`
`Issue
`
`
`
`Advanced Engineering Materials
`
`Volume 11, Issue 10, (/doi/10.1002/adem.V1 1:10/issuetocl pages 811-817, October 2009
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`1 http ://www. a1tmetric.corr1/details.php?
`domain=on1ine1ibra
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`
`Additional Information
`
`How to Cite
`
`Antunes, M., Velasco, J. I., Realinho, V., Martinez, A. B., Rodriguez-Pérez, M.-A. and de Saja, J. A. (2009),
`Heat Transfer in Polypropylene-Based Foams Produced Using Different Foaming Processes. Adv. Eng. Mater.,
`11: 811-817. doi: 10.1002/adem.200900129
`
`Author Information
`
`Page 1 of 3
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`BOREALIS EXHIBIT 1080
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`BOREALIS EXHIBIT 1080
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`Page 1 of 3
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`
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`1 C
`
`entre Calala del Plastic, Departament de Ciencia dels Materials i Enginyeria Metal-lurgica Universitat
`Politécnica de Catalunya, C/Colom 114, E-08222, Terrassa, Barcelona (Spain)
`
`2 C
`
`ellular Materials Group (CellMat), Condensed Matter Physics Department University of Valladolid,
`47011 Valladolid (Spain)
`
`Email: Marcelo Antunes (marcelo.antunes@upc.edu)
`
`*Centre Calala del Plastic, Departament de Ciéncia dels Materials i Enginyeria Metal-lurgica Universitat
`Politecnica de Catalunya, C/Colom 114, E-08222, Terrassa, Barcelona (Spain).
`
`T Financial assistance from the Spanish Ministry of Science and Education (nos. MAT2007-62956,
`MAT-2006-1 1614- C03-01), the Junta of Castile and Leon (no. VA047A07) and the FEDER
`program is gratefully acknowledged.
`
`Publication History
`
`1. Issue published online: 23 OCT 2009
`2. Article first published online: 21 AUG 2009
`3. Manuscript Revised: 4 JUN 2009
`4. Manuscript Received: 12 MAY 2009
`
`Funded by
`
`0 Spanish Ministry of Science and Education. Grant Numbers: MAT2007-62956, MAT-2006-1 1614- C03-
`01
`
`0 Junta of Castile and Leon. Grant Number: VA047A07
`
`0 FEDER program
`
`0 Abstract
`
`0 References 1/doi/10.l002/adem.200900129/references1
`0 Cited By 1/doi/10.1002/adem.200900129/citedbyl
`
`Get PDF 778K /doi/10.1002/adem.200900129/e d Get PDF 778K /doi/10.1002/adem.200900l29/ d
`
`Keywords:
`
`foams; polypropylene; thermal conductivity
`
`This paper presents the characterization of the cellular structure and thermal conduction behaviour of polypropylene foams produced using different
`
`foaming processes, with the aim of selecting the best possible PP foam thermal insulator. Thermal conductivity results have shown that the global heat
`
`transfer behaviour is controlled by the relative density. For relative densities higher than 0.2, thermal conductivity differences were insignificant, the
`
`data being predicted by the mixture's rule and Russell's model. In the low density range, all of the proposed models underestimated the overall
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`conductivity, the effect of the processing method being more significant, slight differences being observed between foams produced by extrusion and
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`those produced by gas dissolution with higher cell sizes and anisotropies. Foams with finer cellular structures showed to be better insulating materials.
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