Physical characteristics of plasticized epoxy system in the post-yield stage



Thermo-rheological analysis was conducted on epoxy–Versamid specimens drawn from different portions of beams subjected to a yield test. Mc values, characterizing the crosslink density and determined by a special method, show insignificant variation for unstressed (virgin), pre-yield, and post-yield zones of the material. It was concluded that the yielding process in the plasticized epoxy system consists mainly in disruption of physical bonds.