| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 가을 (10/06 ~ 10/08, 대구컨벤션센터(EXCO)) |
| 권호 |
40권 2호 |
| 발표분야 |
대학원생 구두발표 (영어발표, 발표15분) |
| 제목 |
Vertical filler alignment via external magnetic field for thermal conductivity enhancement |
| 초록 |
Anisotropic characteristic boron nitride was vertically align through heat transport direction by magnetic field. Iron oxide nanoparticle which introduced onto BN surface acts as magnetic responsible material for effective particle alignment. The paramagnetic iron oxide was polarized by magnetic field and connected each particle into vertical direction. The thermal conductivity of synthesized vertically aligned composite increased from 1.765 W/mK to 3.445 W/mK on 30 vol% of filler loading, that is 1.96 -fold higher value thane in case of randomly oriented composite. Moreover, the filler contents effect on filler dispersion shape, homogeneously dispersed fillers were aggregated and formed column like shape due to gravitation force by induced dipole interaction and these filler dispersion shape also influence to thermal transport properties. These results suggest the promising application of magnetically aligned anisotropic particle-based polymer composites in electronic packaging. |
| 저자 |
김주헌, 김기호
|
| 소속 |
중앙대 |
| 키워드 |
thermal conductivity; alignment
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| E-Mail |
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