| 학회 | 한국재료학회 |
| 학술대회 | 2014년 가을 (11/27 ~ 11/28, 대전컨벤션센터) |
| 권호 | 20권 2호 |
| 발표분야 | B. 나노 재료(Nanomaterials) |
| 제목 | Enhancement Thermal Conductivity of Graphene / Poly-methlymethacrylate Composite for Thermal Interface Material by Segregated Filler Structure |
| 초록 | Graphene has high thermal conductivity and can be easily functionalized to tailor their compatibility with the host polymer. For these properties, graphene-polymer composite widely studied for their potential applications such thermal interface materials (TIMS). For TIM, graphene-polymer composite should have high through-plane thermal conductivity because of heat conduction from electronic device to heat sink, however graphene has anisotropic thermal conductivity, it is hard to generate through-plane thermal conductivity of polymer composite by randomly distributed filler structure. In this work, segregated filler structure of composite materials was well developed by using percolation theory. PMMA beads were used for selective dispersion of fillers in matrix which fabricate electrical pathway of fillers on interface of PMMA beads. Graphene was coated on PMMA beads by solution method, and then directly condensed. Graphene coated PMMA beads were hot-pressed at 200oC in an electrically heated hot press machine at 400MPa for 10 minute to fabricate graphene/PMMA composite. In this processing, it is important that interaction between polymer beads and fillers. Therefore ZeMac® (ethylene-maleic anhydride copolymer) was used for chemical interaction between them. |
| 저자 | Seung Han Ryu1, Seil Kim2, Sung-Oong Kang3, Nosang V. Myung4, Yong-Ho Choa1 |
| 소속 | 1Department of Fusion Chemical Eng., 2Hanyang Univ., 3Kyounggi-do Ansan 426-791, 4Korea |
| 키워드 | Graphene; Thermal conductivity; Polymer composite; Segregated filler structure |
