| Project/Area Number |
13650749
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Composite materials/Physical properties
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| Research Institution | KANAZAWA INSTITUTE OF TECHNOLOGY |
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Principal Investigator |
HANAOKA Ryoichi Kanazawa Institute of Technology, Electrical Engineering, Professor, 工学部, 教授 (90148148)
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| Co-Investigator(Kenkyū-buntansha) |
FUKAMI Tadashi Kanazawa Institute of Technology, Electrical Engineering, Associate Professor, 工学部, 助教授 (60247434)
TAKATA Shinnzo Kanazawa Institute of Technology, Electrical Engineering, Professor, 工学部, 教授 (70064467)
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| Project Period (FY) |
2001 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 2002: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2001: ¥1,900,000 (Direct Cost: ¥1,900,000)
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| Keywords | ER fluid / ER gel / silicone oil / hydrosilylation reaction / ER effect / complex shear modulus / loss tangent / viscoelastic behavior / 粒子分散系ER流体 / シリコーン油 / ERシリコーンゲル / 粘弾性特性 / 粒子の鎖状 / 無機・有機複合構造 |
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| Research Abstract |
The problem of the poor dispersion stability of particles in the ER fluids can be neglected by the gelation of the ER fluid. In the present study, the silicone oil-based electrorheological (ER) gel containing the non-aqueous fine particles was newly created. After these particles were dispersed at 30wt% in the dimethylsilicone oil, the ER gel was produced by the hydrosilylation reaction in the mixture of the modified silicone oil. This reaction could considerably be promoted by heating at 90℃.
The behavior of particles in the ER gel was observed by a microscopical method. When an electric field was applied to the ER gel, the gap between the electrodes was bridged by the chains of particles arranged in the direction of the electric field. The dynamic properties of the ER gel were also examined under the applied dc electric field up to 2kV/mm using the oscillating theometer with the low frequencies of 1Hz or less. Consequently, the electroviscoelastic effect of the gel could be controlled by the electric field strength. This effect of the ER gel was larger than that of a suspension dispersed the same particles in an dimethylsilicone oil.
In this work, we conclude that the ER gel will be helpful in the development of vibration-proof devices for a small-amplitude oscillatory shear at a low frequency.
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