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An approach to analytical prediction of optimal curing mode of thermosetting systems
Reactive and Functional Polymers. 2025. Vol. 207. P. 1–8.
Zhavoronok E. S., I. N. Senchikhin
An approach to the analytical prediction of the optimal curing mode of thermosetting systems is proposed. The
published literature on epoxy-amine systems has been analyzed, and a correlation between the parameters of the
DiBenedetto and Arrhenius equations and the glass transition temperature of uncured epoxy-amine systems was
established. On the basis of the data, the approach proposed by Gillham and Enns was employed to calculate a
time required for thermosetting system to reach the glassy state, and the mode of two-stage curing through the
use of TTT (time-temperature-transformation) diagrams was determined as well. The optimal curing mode was
proposed and calculated for the DGEBA-based epoxy resin Epikote 828 and its mixture with aliphatic resin
Laproxide 703 with curing agent oligooxypropylenediamine Jeffamine D-230, with the resulting temperatures
and times demonstrating satisfactory agreement with those calculated from experimental TTT diagrams. It is
suggested that the proposed approach for predicting the optimal curing mode be employed for new epoxy-amine
systems, for which the time-consuming experiment, required for the construction of TTT diagrams has not yet
been performed.
Language:
English
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