Rubber-Modified epoxies. IV. Influence of morphology on mechanical properties
D. Verchere
Laboratoire des Matériaux Macromoléculaires, URA CNRS n°. 507, Institut National des Sciences Appliquées de Lyon, 20, Avenue A. Einstein, 69621 Villeurbanne Cedex, France
Search for more papers by this authorJ. P. Pascault
Laboratoire des Matériaux Macromoléculaires, URA CNRS n°. 507, Institut National des Sciences Appliquées de Lyon, 20, Avenue A. Einstein, 69621 Villeurbanne Cedex, France
Search for more papers by this authorCorresponding Author
H. Sautereau
Laboratoire des Matériaux Macromoléculaires, URA CNRS n°. 507, Institut National des Sciences Appliquées de Lyon, 20, Avenue A. Einstein, 69621 Villeurbanne Cedex, France
Laboratoire des Matériaux Macromoléculaires, URA CNRS n°. 507, Institut National des Sciences Appliquées de Lyon, 20, Avenue A. Einstein, 69621 Villeurbanne Cedex, France===Search for more papers by this authorS. M. Moschiar
Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET) 7600 Mar del Plata, Argentina
Search for more papers by this authorC. C. Riccardi
Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET) 7600 Mar del Plata, Argentina
Search for more papers by this authorR. J. J. Williams
Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET) 7600 Mar del Plata, Argentina
Search for more papers by this authorD. Verchere
Laboratoire des Matériaux Macromoléculaires, URA CNRS n°. 507, Institut National des Sciences Appliquées de Lyon, 20, Avenue A. Einstein, 69621 Villeurbanne Cedex, France
Search for more papers by this authorJ. P. Pascault
Laboratoire des Matériaux Macromoléculaires, URA CNRS n°. 507, Institut National des Sciences Appliquées de Lyon, 20, Avenue A. Einstein, 69621 Villeurbanne Cedex, France
Search for more papers by this authorCorresponding Author
H. Sautereau
Laboratoire des Matériaux Macromoléculaires, URA CNRS n°. 507, Institut National des Sciences Appliquées de Lyon, 20, Avenue A. Einstein, 69621 Villeurbanne Cedex, France
Laboratoire des Matériaux Macromoléculaires, URA CNRS n°. 507, Institut National des Sciences Appliquées de Lyon, 20, Avenue A. Einstein, 69621 Villeurbanne Cedex, France===Search for more papers by this authorS. M. Moschiar
Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET) 7600 Mar del Plata, Argentina
Search for more papers by this authorC. C. Riccardi
Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET) 7600 Mar del Plata, Argentina
Search for more papers by this authorR. J. J. Williams
Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET) 7600 Mar del Plata, Argentina
Search for more papers by this authorAbstract
The mechanical properties of a system consisting of a bisphenol A diglycidylether (DGEBA) expoxy, cured with a cycloaliphatic diamine (4,4′-diamino-3,3 dimethyldicyclohexyl-methane, 3DCM), in the presence of an epoxy-terminated butadiene-acrylonitrile random copolymer (ETBN), was studied as a function of the cure schedule and the initial rubber concentration. Fracture toughness (KIc) and fracture energy (GIc) were increased, while Young's modulus and yield strength decreased slightly with increasing volume fraction of the dispersed phase. We show that there is no significant influence of the precure schedule and of the various observed particle diameters on the mechanical properties for a constant rubber volume fraction. In our case, the main deformation process in the rubber-modified epoxy networks is shear yielding while cavitation is negligible.
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