| 학회 |
한국고분자학회 |
| 학술대회 |
2016년 봄 (04/06 ~ 04/08, 대전컨벤션센터) |
| 권호 |
41권 1호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
Magnetorheology of Composite Microparticles Suspension with Enhanced Stability |
| 초록 |
The sedimentation stability of a carbonyl iron (CI)-based magnetorheological (MR) fluid was improved by wrapping CI particles with a polystyrene (PS) foam layer. The PS layer on the CI particles was synthesized via conventional dispersion polymerization and was subsequently foamed using a supercritical carbon dioxide fluid to produce core-shell structured particles. The density of particles decreased after the PS-layer wrapping and subsequent PS-layer foaming. The effect of the volume expansion after modification on the magnetorheological properties was investigated by using a vibrating sample magnetometer (VSM) and a rotational rheometer. Finally, the sedimentation properties of the synthesized particles was examined using a Turbiscan apparatus. MR fluids containing the newly developed CI particles wrapped with the foamed PS layer exhibited remarkably improved stability against sedimentation due to the reduced mismatch in density between the particles and the carrier medium. |
| 저자 |
서용석, Wei Huan Chuah, 서영욱
|
| 소속 |
서울대 |
| 키워드 |
Magnetorheology; Nanocomposite suspension; Stability
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| E-Mail |
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