| 학회 |
한국고분자학회 |
| 학술대회 |
2013년 가을 (10/11 ~ 10/12, 창원컨벤션센터) |
| 권호 |
38권 2호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
Size effect of fumed silica based shear thickening fluid and its rheological characteristics |
| 초록 |
We investigate rheological properties of the shear thickening fluid (STF), in which the STF samples, with different particle size and weight fraction, were prepared by dispersing nanosized fumed silica particles in ethylene glycol solvent. Morphology of fumed silica was confirmed via scanning electron microscopy images. Rheological properties of fumed silica suspensions with different weight fractions were measured via steady-state and dynamic experiments, using a rotational rheometer with a double gab (DG 26.7, Physica) geometery. Experimental results indicated that these suspensions show an abrupt increase in complex viscosities beyond a critical frequency, as well as this increase is reversible. However, during a high-frequency dynamic oscillation test, it was observed that the shear thickening occurred only when an apparent critical shear strain was reached. |
| 저자 |
장대성1, 서재식2, 박종민2, 양경모2, 최형진1
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| 소속 |
1인하대, 2현대자동차 고분자 재료 연구팀 |
| 키워드 |
Suspension rheology; Fumed silica; Ethylene glycol; Shear thickening; Strain thickening
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| E-Mail |
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