The mechanical and thermal properties of alumina filled epoxy

This article describes the thermal and mechanical behavior of alumina-filled epoxy composites. The epoxy matrix was reinforced with increasing amount of alumina particles in the range of 10-30% by weight using resin transfer molding technique. From the flexural test results, it was observed that the flexural modulus increases with increasing a-alumina content from 10 to 30 wt% with 30 wt% of a-alumina content recorded the highest value of flexural modulus. The DMA result reveals that the highest glass transition temperature (Tg) was recorded at 30 wt% alumina content. It was also found that the 30 wt% alumina content recorded the highest value of storage modulus. The weight loss profile and thermal stability from TGA results show that the thermal stability increases with increasing alumina content. The morphology of the fracture surface also be studied using FESEM.