| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터) |
| 권호 |
43권 2호 |
| 발표분야 |
고분자합성 |
| 제목 |
Synthesis and characterization of reduced graphene oxide/magnetic mesoporous silica composites for EMI shielding application |
| 초록 |
With the overwhelm of electromagnetic (EM) radiation in working space, it is required a novel kind of EM materials which can display an excellent EM shielding ability at minimum density. Herein, we investigated a composites of porous silica particles with presence of reduced graphene oxide (rGAMS) in the idea of limitation density since the light behavior of porous silica. rGAMS were prepared by amidation reaction of amine functionalized mesoporous silica particles (AMS) in the presence of hydrophilic reduced graphene oxide obtained from a simple thermal reduction GO. SEM images of rGAMS clearly showed that AMS was successfully coated on the folded region of rGO. The absorber with 5wt% content of rGAMS filer reached the minimum reflection loss of -19.8 dB at 10.9 GHz and the average absorption was 87% at bandwidth of 9.8 GHz. The absorbing mechanism was mainly distributed by dielectric polarization generated at the interfacial interaction between different components of composites. |
| 저자 |
QUYEN VU THI, 손대원
|
| 소속 |
Hanyang Univ. |
| 키워드 |
Redcued graphene oxide; porous silica particles; EM shielding
|
| E-Mail |
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