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Exotherm profiles of plasticized epoxy polymers in polymerization

  • Polymer Science
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Summary

In this paper the thermodynamics of polymerization of a plasticized epoxy polymer were studied by applying a simple recording device for the instantaneous measurement of polymerization temperature. Especially, the forms of the characteristic exotherm profile during polymerization of a series of plasticized epoxy polymers were investigated, as well as its variation with respect to time. The characteristic points of the exothenn profile were determined, that is the gel point and the peak exotherm temperature as functions of time elapsed during the process of polymerization, as well as the temperature and time of hardening of mixture.

The study was also extended to various percentages of plasticizer and to the functional influence of these percentages on the evolution of the polymerization process.

Zusammenfassung

Es wurde die Polymerisationsthermodynamik von plastifizierten Epoxydpolymeren untersucht unter Anwendung einer einfachen Meßvorrichtung welche die kontinuierliche Verfolgung der Polymerisationstemperatur ermöglicht. Hierbei wurde die Form der bei dieser exothermen Reaktion während der Polymerisation entstehenden Temperaturkurven ermittelt und ihr Verlauf in Abhängigkeit der Zeit graphisch dargestellt. Die aus diesen Ergebnissen erhaltenen charakteristischen Werte des Polymerisationsprozesses wie z. B. Gelier- und Härtungszeit, die zugehörigen und maximalen Temperaturen wurden zusammengestellt und verglichen.

Die Untersuchung wurde für verschiedene Prozente plastifizierenden Materials in der Mischung durchgeführt und ihr Einfluß auf den Polymerisationsvorgang bestimmt.

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References

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Theocaris, P.S., Koroneos, E. Exotherm profiles of plasticized epoxy polymers in polymerization. Colloid & Polymer Sci 252, 448–455 (1974). https://doi.org/10.1007/BF01554750

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  • DOI: https://doi.org/10.1007/BF01554750

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