UF1 adhesive, having higher F/U molar ratio of
1.112, showed significantly lower values of onset and
peak temperatures compared to UF2 adhesive with
1.086 F/U ratio. In addition, the activation energy, Ea,and at the higher conversion degrees, while in the
range between 30–70% no significant changes in Ea
occurred. This might be explained by the presence of
diffusion controlled reaction at the beginning and at
the end of adhesive curing. On the other hand, the
curing of UF2 caused constant decrease of Ea.