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Effects of small particles on the mechanical behavior and on the local damage of highly filled elastomers

Article dans une revue avec comité de lecture
Author
TOULEMONDE, Paul-Aymé
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
DIANI, Julie
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
GILORMINI, Pierre
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
DESGARDIN, Nancy
302872 HERAKLES - SAFRAN
NEVIÈRE, Robert
302872 HERAKLES - SAFRAN

URI
http://hdl.handle.net/10985/11341
DOI
10.1007/s10853-016-0383-9
Date
2017
Journal
Journal of Materials Science

Abstract

The mechanical behavior and damage of highly filled elastomers such as propellants is studied experimentally. A model material made of a polyacrylate matrix filled with glass beads and energetic binders filled with ammonium perchlorate and HMX have been formulated. The focus is on materials containing micrometric size particles. The size of fillers was varied from a few microns to hundreds of microns in order to study the impact of the size of particles. The materials stress-strain responses and the volume changes during uniaxial tensile tests have been recorded. Microtomographic slices of strained samples have been obtained in order to look at the type of damage sustained by the acrylate/glass bead materials. It appears that in the presence of large particles, composites showing early prominent crack benefits from the addition of small particles, whereas composites showing well dispersed matrix/particle decohesion without large cracks show no change of behavior when small particles are added.

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