Study of cure epoxy resin by differential scanning calorimetry

Abstract

Differential Scanning Calorimetry (DSC) is used to study the curing behavior of epoxy systems. For non-catalyzed diamine-epoxy systems, the reaction enthalpy AH and the glass transition temperature T_g are evaluated and related to the structure of the hardener. A method is developed to determine the activation energy. The effect of variations in the amine-to-epoxy ratio r on T_g is also examined. A maximum value is observed for r = 1.

and the ends formed by the curing process have been studied, the change in the heat capacity of the polymer with the stoichiometric ratio r has been studied, and the thermal parameters of the differential scanning have been determined