Infrared Spectroscopy Study of the SP-250 Epoxy Resin System

摘要

The various epoxides which are part of the SP-250 formulation (3M Company, St. Paul, Minnesota) were treated to three different curing procedures. In this study, the epoxides and the epoxy blends were individually cured with dicyandiamide (Dicy) and Monuron, respectively, and in combination (Dicy/Monuron). The acceleration of the Dicy-containing epoxy resin cure is linked to the formation of cyclic 2-0xazolidone. The characteristic nature of the carbonyl band of these cyclic derivatives prompted us to monitor the hardening process by infrared spectroscopy.