[Etude de mélanges EPDM/PP : comportement mécanique et effets de compatibilization]
Un matériau constitué d'une matrice d'Ethylene Propylène Diene Monomer (EPDM) renforcée par des particules de Polypropylène (PP) a été élaboré et son comportement hyperélastique a été caractérisé sous sollicitations de traction uni-axiale cyclique. Les résultats expérimentaux montrent un effet significatif de la fraction de particules de polypropylène (10%, 25% et 30% en masse). De plus, à partir d'une autre série de tests réalisés sur des matériaux auxquels sont adjoints des compatibiliseurs à différentes concentrations en masse, il est observé que l'introduction de tels compatibiliseurs accroît la rigidité des mélanges et affecte notablement leur comportement macroscopique. Ces observations expérimentales sont interprétées comme une conséquence de la modification à l'échelle microscopique de l'adhérence entre les particules et la matrice. La mise en oeuvre d'un modèle micromécanique non linéaire permet de confirmer cette interprétation.
A blend of Ethylene Propylene Diene Monomer (EPDM) rubber reinforced by polypropylene (PP) particles has been processed and its hyperelastic behavior has been characterized under cyclic uni-axial tensile tests. The experimental results show a significant effect of the fraction of polypropylene particles (10%, 25% and 30% by weight). Moreover, from another series of tests conducted on materials containing compatibilizers at different mass concentration, it is observed that the introduction of a compatibilizer increases the rigidity of the blends and affects notably their macroscopic behavior. These observations are interpreted as a consequence of the modification at microlevel of adherence between particles and matrix phases. The use of a nonlinear micromechanical model allows us to confirm this interpretation.
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Mot clés : Solides et structures, Élastomères renforcés, Étude expérimentale, Compatibiliseur, Adhérence particules-matrice
@article{CRMECA_2008__336_9_714_0,
author = {Vanessa Bouchart and N. Bhatnagar and Mathias Brieu and A.K. Ghosh and Djimedo Kondo},
title = {Study of {EPDM/PP} polymeric blends: mechanical behavior and effects of compatibilization},
journal = {Comptes Rendus. M\'ecanique},
pages = {714--721},
publisher = {Elsevier},
volume = {336},
number = {9},
year = {2008},
doi = {10.1016/j.crme.2008.06.004},
language = {en},
}
TY - JOUR AU - Vanessa Bouchart AU - N. Bhatnagar AU - Mathias Brieu AU - A.K. Ghosh AU - Djimedo Kondo TI - Study of EPDM/PP polymeric blends: mechanical behavior and effects of compatibilization JO - Comptes Rendus. Mécanique PY - 2008 SP - 714 EP - 721 VL - 336 IS - 9 PB - Elsevier DO - 10.1016/j.crme.2008.06.004 LA - en ID - CRMECA_2008__336_9_714_0 ER -
%0 Journal Article %A Vanessa Bouchart %A N. Bhatnagar %A Mathias Brieu %A A.K. Ghosh %A Djimedo Kondo %T Study of EPDM/PP polymeric blends: mechanical behavior and effects of compatibilization %J Comptes Rendus. Mécanique %D 2008 %P 714-721 %V 336 %N 9 %I Elsevier %R 10.1016/j.crme.2008.06.004 %G en %F CRMECA_2008__336_9_714_0
Vanessa Bouchart; N. Bhatnagar; Mathias Brieu; A.K. Ghosh; Djimedo Kondo. Study of EPDM/PP polymeric blends: mechanical behavior and effects of compatibilization. Comptes Rendus. Mécanique, Volume 336 (2008) no. 9, pp. 714-721. doi : 10.1016/j.crme.2008.06.004. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2008.06.004/
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Vanessa Bouchart; Mathias Brieu; Djimedo Kondo; ...
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