| 초록 |
Environmental issues are becoming increasingly important. Now, sustainable and energy-free materials are in the spotlight of research and development. Cooling is not only required for buildings, but also for automotive engines, thermoelectric elements, etc. The previous studies on the composites of poly(N-isopropylacrylamide) (PNIPAm) have shown the advantages of cooling materials based on its unique lower critical solution temperature (LCST) behavior of rapid deswelling. In this study, we improved the thermal conduction for cooling applications, which was prepared by melt crystallization of water. As a component, polyurethane (PU) was used to control evaporation. Thermal conduction was improved by incorporation of aluminum nitride (AIN). This creates composites that allow control evaporation like skin epidermis. Also the infiltration of NIPAm solution into the PU pores prepared a novel hydrogel composite. Composites using this method will help future evaporative cooling systems. |
