期刊
COLLOID AND POLYMER SCIENCE
卷 289, 期 11, 页码 1295-1298出版社
SPRINGER
DOI: 10.1007/s00396-011-2452-6
关键词
Magnetorheological fluid; Carbonyl iron; Coating; Silica; Magnetic particle
资金
- Ministry of Knowledge Economy, Korea
- Kolon
- Korea Evaluation Institute of Industrial Technology (KEIT) [10033294] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [핵09A1312] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We synthesized silica-coated soft magnetic carbonyl iron (CI) particles through a modified Stober method, in which the CI particles were pretreated with a grafting agent to enhance the affinity of a precursor of silica. Synthesized magnetic microbeads were characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, and anti-acid test in HCl solution. Silica-coated CI shows not only improved wettability to silicone oil with a lower off-state shear viscosity as a better magnetorheological fluid under an applied magnetic field but also enhanced anti-acidic property.
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