Interphase in the mechanical behaviour prediction models for nanocomposites
L'interphase dans les modèles de prédiction du comportement mécanique pour les nanocomposites Interphase in the mechanical behaviour prediction models for nanocomposites
Résumé
Polymers are increasingly used in the transport sector due to their many advantages; lightness, corrosion resistance, ease to process... However, most of them have limited mechanical properties. To improve these latter, one of the solutions is the addition of nano-reinforcements, this type of material is called nanocomposite. The particularity of these nanocomposites comes from the influence of the interphase, which is an interaction zone between the nanofillers and the matrix. It is therefore imperative to take it into account in the mechanical prediction models.
Several analytical schemes are available to study nanocomposites. Some models use a serial or parallel representation of the phases (rule of mixture, Ji model, ...), while others rely on the mean field homogenization approach (Eshelby, Self-consistent, Mori-Tanaka, Double Inclusion, ...).
However, directly observing the interphase and its properties experimentally is complex due to its size. Consequently, it is laborious to check the consistency of its consideration in analytical schemes. To compare these schemes, some limit cases of the interphase are studied. A numerical model is also used as a reference for two nanocomposites with distinct interphases.
Mots clés
Nanocomposite interphase propriétés mécaniques schéma de prédiction modélisation numérique Nanocomposite interphase mechanical properties prediction scheme numerical modelling
Nanocomposite
interphase
propriétés mécaniques
schéma de prédiction
modélisation numérique Nanocomposite
mechanical properties
prediction scheme
numerical modelling
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