A relationship between the glass transition temperature and the conversion degree in the curing reaction of the EPY epoxy system

There has been studied correlation between the glass transition temperature (Tg) and the conversion degree (α) in the cure reaction of the EPY® epoxy system (applied for machine foundation chocks), following evaluation of both these parameters. Three model correlations of Tg = ƒ(α) developed from DiBenedetto equation by Pascault and Wiliams, by Oleinik and also by Hale were verified. It was proved that the latter model best fits the experimental results Tg versus a obtained with the differential scanning calorimetry (DSC) method.