Curing Kinetics of Amine Terminated Polyetherimide/Epoxy Resin Blends and Its Application on the High Toughness Composites

Amine terminated polyetherimide/Epoxy 블렌드의 경화공정과 고강인성 복합재료에의 응용

The investigation of cure kinetics, morphology, and fracture toughness studies on epoxy resin/amine terminated PEI/Anhydride system were performed by differential scanning calorimetry and scanning electron microscopy. Modified autocatalystic kinetics model was applied by isothermal scan test. The fracture toughness for the neat epoxy resin was 2.15 MPa m0.5 and the fracture toughness was improved 45% as neat epoxy resin system. The generation of secondary phase of AT-PEI was observed and its size was grown up by increasing contents of PEI.