| 초록 |
In this study, trifunctional epoxy resin triglycidyl paraaminophenol (TGPAP)/CaCO3 nanocomposites were prepared using the melt blending method. The effects of nano-CaCO3 content on the thermal behaviors, such as cure behavior, glass transition temperature (Tg), thermal stability, and the coefficient of thermal extension (CTE), were investigated by several techniques. Differential scanning calorimetry (DSC) results indicated that the cure reaction of the TGPAP epoxy resin was accelerated with the addition of nano-CaCO3. When thenano-CaCO3 content was increased, the Tg of the TGPAP/CaCO3 nanocomposites did not obviously change, whereas the crosslinking density was linearly increased. The nanocomposites showed a higher thermal stability than that of the neat epoxy resin. The CTE of the nanocomposites in the rubbery region was significantly decreased as the nano-CaCO3 content was increased. |
