| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 가을 (10/06 ~ 10/08, 대구컨벤션센터(EXCO)) |
| 권호 |
40권 2호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
High performance Electromagnetic Interference Shielding Effectiveness of graphene/polystyrene nanocomposites prepared through wet mixing and coagulation methods |
| 초록 |
EMI Shielding materials are getting increasing attention due to surge in utilization of electronic devices. Here, we report the synthesis of graphene based polystyrene (PS) composites by two approaches. First, we used the aqueous wet mixing of PS/graphene oxide (GO) and insitu reduced the dispersion by Hydroiodic acid (HI) followed by filtration and compaction of powder in pellet form. In another approach, we utilized the NMP as solvent for PS and GO and insitu reduced the mixed solution by HI acid followed by coagulation in methanol. The powder was filtered and compacted for measuring the electromagnetic properties. The coagulated composites show excellent EMI shielding performance at 20GHz approaching to 34 dB, whereas the wet mixing composite show 26 dB at similar frequency and thickness. The high EMI shielding performance of coagulated composite is ascribed to better homogeneity of filler material in the composite which resulted in improved electrical conductivity. |
| 저자 |
구종민, 홍순만, 권태훈, Pradip Kumar, Faisal Shahzad
|
| 소속 |
Korea Institute of Science and Technology |
| 키워드 |
Electromagnetic Interference Shielding; Graphene; composite
|
| E-Mail |
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