Article (Scientific journals)
Effect of volume-fraction dependent agglomeration of nanoparticles on the thermal conductivity of nanocomposites: Applications to epoxy resins, filled by SiO2, AlN and MgO nanoparticles
Machrafi, Hatim; Lebon, Georgy; Iorio, C. S.
2016In Composites Science and Technology, 130, p. 78-87
Peer Reviewed verified by ORBi
 

Files


Full Text
CST.pdf
Author postprint (1.56 MB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Modeling; Nano particles; Polymer-matrix composites; Scanning electron microscopy; Thermal properties; Agglomeration; Epoxy resins; Heat conduction; Models; Molecular dynamics; Nanocomposites; Nanoparticles; Polymer matrix composites; Thermodynamic properties; Thermodynamics; Volume fraction; Degree of agglomeration; Effective thermal conductivity; Extended irreversible thermodynamics; Interface characteristic; Spherical nanoparticles; Theoretical modeling; Thermodynamic model; Transient heat conduction; Thermal conductivity
Abstract :
[en] A thermodynamic model for transient heat conduction in ceramic-polymer nanocomposites is proposed. The model takes into account particle's size, particle's volume fraction, and interface characteristics with emphasis on the effect of agglomeration of particles on the effective thermal conductivity of the nanocomposite. The originality of the present work is its basement on extended irreversible thermodynamics, combining nano- and continuum-scales without invoking molecular dynamics. The model is compared to experimental data using the examples of SiO2, AlN and MgO nanoparticles embedded in epoxy resin. The analysis is limited to spherical nanoparticles. The dependence of the degree of agglomeration with respect of the volume fraction of particles is also discussed and a power-law relation is established through a kinetic mechanism and experiments performed in our laboratory. This relation is used in our theoretical model, resulting into a good agreement with experiments. It is shown that the effective thermal conductivity may either increase or decrease with the degree of agglomeration. © 2016 Elsevier Ltd.
Disciplines :
Materials science & engineering
Author, co-author :
Machrafi, Hatim ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Thermodynamique des phénomènes irréversibles
Lebon, Georgy ;  Université de Liège - ULiège > Relations académiques et scientifiques (Sciences)
Iorio, C. S.;  Université Libre de Bruxelles, Physical Chemistry, Av. Roosevelt 50, Brussels, Belgium
Language :
English
Title :
Effect of volume-fraction dependent agglomeration of nanoparticles on the thermal conductivity of nanocomposites: Applications to epoxy resins, filled by SiO2, AlN and MgO nanoparticles
Publication date :
2016
Journal title :
Composites Science and Technology
ISSN :
0266-3538
eISSN :
1879-1050
Publisher :
Elsevier Ltd
Volume :
130
Pages :
78-87
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 19 November 2017

Statistics


Number of views
63 (1 by ULiège)
Number of downloads
602 (1 by ULiège)

Scopus citations®
 
65
Scopus citations®
without self-citations
61
OpenCitations
 
50

Bibliography


Similar publications



Contact ORBi