| 학회 |
한국고분자학회 |
| 학술대회 |
2013년 봄 (04/11 ~ 04/12, 대전컨벤션센터) |
| 권호 |
38권 1호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
Enhancement in thermal properties by fabrication of PU-shell PCM capsules embedded with magnetite nanoparticles |
| 초록 |
Phase change materials (PCMs) have gained great attention over the years due to their ability to absorb, store, and release large amounts of latent heat over a defined temperature range when undergoing phase changes. However, leakage of PCM liquefied above melting temperature is a problem to overcome when applying PCM to other areas. In this study, nano-sized capsules with PCM as the core and polyurea as the shell were obtained by minemulsion polymerization method. Polyurea is chemically stable and can incorporate both hydrophobic- and hydrophilic-active materials. The polyurea shell structure acted as a barrier to prevent leakage of PCM. Furthermore, hydrophobic magnetite nanoparticles were embedded in the PCM core as a filler material in order to maximize the response rate and enhance thermal conductivity. Magnetite embedded nanocapsules also carry magnetic effects and are expected to be applied to many other areas. |
| 저자 |
이혜원, 박상필, 장은지, 임태극, 정의석, 고원건
|
| 소속 |
연세대 |
| 키워드 |
PCM; magnetite; core-shell; nanocapsules
|
| E-Mail |
|
