Tóm tắt

Phase change materials (PCMs) with large latent heat capacity and efficient thermal response have greatrnpotential for thermal management in various applications. Uniform phase change composite beads werernfabricated based on phase change medium 1-tetradecanol (TD) as gatekeeper and core-satellites zincrnoxide @ poly(N-isopropyl acrylamide) (ZnO@PNIPAM) using a simple injection device at 50℃. It wasrndemonstrated that the ZnO@PNIPAM/TD PCM system possessed a high latent heat value of 230 J grnu00011rn.rnThe ZnO nanospheres acted as the core and the phase change material TD was the shell. Furthermore,rnthe satellites PNIPAM nanoparticles acted as a reservoir. The enthalpy values of ZnO@PNIPAM/TD keptrnhigh (233.04 J grnu00011rnand 229.41 J grnu00011rn) compared with pure TD. The suitable melting temperature of therntemperature sensitive PCM is about 38.5℃close to the human body temperature. The uniquerncore-satellites structure of the system can store small molecules, which not only has its own excellentrncharacteristics but also can give the system rich functionality.