| 학회 |
한국고분자학회 |
| 학술대회 |
2016년 봄 (04/06 ~ 04/08, 대전컨벤션센터) |
| 권호 |
41권 1호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
Segregated structure of graphene enveloped polymer beads for high performance EMI shielding applications |
| 초록 |
Herein, we report a facile approach to synthesize reduced graphene oxide encapsulated polymer matrix composites. First, the graphene oxide was added in DI water at 1mg/ml concentration followed by addition of polystyrene beads (PSb) and Hydroiodic acid (HI) for insitu reduction of graphene oxide to yield graphene coated PSb powder (rGO-c-PSb). The rGO-c-PSb was then tested for electrical conductivity and EMI shielding measurements. A high EMI shielding value above 20dB was recorded in measured frequency range. Alternatively, a controlled sample with thermally reduced graphene oxide was added in a polystyrene/DMF solution followed by coagulation in methanol to obtain the composite powder (rGO/PS) for EMI measurement. Unlike the rGO-c-PSb, the rGO/PS samples showed much low EMI shielding (10dB) and low dielectric values due to non-homogenous distribution of filler in polymer matrix as compared to rGO-c-PSb which has segregated structure and better filler distribution. |
| 저자 |
Faisal Shahzad, Pradip Kumar, 홍순만, 구종민
|
| 소속 |
Korea Institute of Science and Technology |
| 키워드 |
graphene; EMI Shielding; Dielectric; Polystyrene
|
| E-Mail |
|
