期刊
RHEOLOGICA ACTA
卷 49, 期 8, 页码 837-843出版社
SPRINGER
DOI: 10.1007/s00397-010-0452-y
关键词
Electrorheological fluids; TiO2 nanoparticles; Suspension; Yield stress
类别
资金
- National Basic Research Program of China [2009CB930801]
- National Natural Science Foundation of China [10904155]
- Chinese Academy of Sciences [KJCX2.YW.M07]
- Zhejiang Provincial Natural Science Foundation of China [D4080489]
- Ningbo Natural Science Foundation [2008A610059, 2009A610031]
Two types of amorphous TiO2 particles with different particle sizes were synthesized by a simple sol-gel method and were characterized by X-ray diffraction analysis, field emission scanning electron microscopy, and Fourier transform infrared spectrometry. The electrorheological (ER) results show that the TiO2/silicone oil suspensions exhibited a remarkable ER effect. The static shear stress can be up to 130 kPa (shear rate 0.2 s (-aEuro parts per thousand 1)) under the DC electric field of 4 kV/mm at room temperature. The polar molecules present on the particles' surface play a decisive role for the observed giant ER effect, which arises from the alignment of polar molecules in the gap between neighboring particles.
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