Nanomechanical Investigation of Rubber-modified Epoxy Resins

Description

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.

Period	16 Mar 2015
Event title	DPG-Frühjahrstagung Berlin
Event type	Conference
Location	GermanyShow on map