| 초록 |
Commonly-used polymers are manufactured in versatile form. Furthermore, continuous polymer fibers are recently manufactured. In this study, epoxy as one of common polymers was used to make polymer fibers. Bisphenol-A type is used as base epoxy whereas amine and anhydride type were used as hardeners. Optimum condition such as curing temperature about manufacture of epoxy fibers was obtained. From the differential scanning calorimetry (DSC), the condition of curing and glass transition temperature (Tg) were observed. After mechanical properties were measured through fiber tensile test, the evaluation of fiber fracture was proceeded. Fracture toughness about epoxy fiber using amine type hardener was higher than anhydride case by the tensile test. Fractured surface exhibited different failure patterns at cross sectional region. |
