| 초록 |
In this work, carbon nanofibers (CNFs) were investigated with nanofiber weight fraction into the poly(methyl methacrylate)(PMMA). The mechanical interfacial properties of the CNFs/PMMA nanocomposites were examined by the dynamic mechanical analysis (DMA) and falling impact tester. The thermal stabilities of the CNFs/PMMA were also studied by the thermo mechanical analysis (TMA) and thermogravimetric analysis (TGA). As a result, storage modulus (E'), critical stress intensity factor (KIC), and thermal stabilities of the CNFs/PMMA nanocomposites were higher than those of the pure PMMA resin. Moreover, the CNFs/PMMA nanocomposites reduced shrinkage and enhanced modulus retention with temperature. Consequently, the mechanical interfacial behaviors and thermal stabilities could be enhanced in the presence of the suitable content of the CNFs in the composite system. |
