| 초록 |
The sodium acetate trihydrate (SAT) composites with expanded graphite (EG) and carboxymethyl cellulose (CMC) were prepared according to concentration of EG and CMC to solve phase segregation, aggregation of EG, and supercooling problems. The effects of EG as nucleating agents and CMC as thickening agents on the thermal property, the latent heat, and the thermal cycling stability of the SAT composites as phase change material (PCM) were examined. As the results, the thermal conductivity increased as EG and CMC concentration increased. Especially, the SAT composites with 2.5 wt% EG and 5 wt% CMC exhibited thermal conductivity of 1.85 W/mK. The latent heat of the SAT composites with EG and CMC decreased with an increase of EG and CMC concentration. |
