| 초록 |
In this study, epoxy resin/Al2O3 composites were prepared by melt blending of epoxy resin and Al2O3 nanoparticles. The Al2O3 content was varied from 0 to 15 wt%, and 4,4'-diaminodiphenyl methane (DDM) was used as a curing agent. The curing behavior, thermal stability, and dynamic mechanical properties of the composites were investigated using a differential scanning calorimetry (DSC), a thermogravimetric analysis (TGA), and a dynamic mechanical analysis (DMA). As a result, the curing peak temperature of the composites was decreased with increasing Al2O3 content. The thermal stability of the composites was similar to that of the neat epoxy resins. The glass transition temperature and storage modulus of the composites were increased by the addition of Al2O3. TEM image indicated that the Al2O3 nanoparticles were well dispersed in the epoxy matrix. |
