Berlin 2015 – wissenschaftliches Programm

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BP: Fachverband Biologische Physik

BP 11: Nanoparticles and Composite Materials II (joint CPP/BP)

BP 11.6: Vortrag

Montag, 16. März 2015, 16:15–16:30, C 243

Nanomechanical Investigation of Rubber-modified Epoxy Resins — •Lisa Maria Uiberlacker and Sabine Hild — Institute of Polymer Science, Johannes Kepler University, 4040 Linz, Austria

Epoxy resins have a broad application scope due to the wide range of properties which can be easily modified by mixing various basic components - e.g. to modify the toughness of epoxy resins rubber auxiliaries are added.

This study focused on epoxy mixtures based on a bisphenol A diglycidyl ether cured with diethyltoluenediamine with various amounts of nitrile rubber. Both, morphology and the mechanical properties of these two phase systems were examined with scanning force microscopy (SFM).

In SFM phase images the epoxy phase was clearly distinguished from the rubber phase. The nitrile rubber formed spherical domains in the epoxy matrix. Phase separation occurred also in the rubber matrix. Mechanical properties of both phases were quantified by nanoindentation experiments. In addition, the influence of different amounts of rubber additive on the toughness of the epoxy matrix was examined.