Magnetorheological polymer gels
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United States of America Patent
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-
Mar 4, 2003
Grant Date -
Apr 10, 2003
app pub date -
Feb 20, 2001
filing date -
Feb 18, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Magnetorheological materials are provided comprising magnetic particles, a polymeric gel and a carrier material. The polymerization of the gel is preferentially accomplished in the presence of the magnetic particles and the carrier material. Magnetorheological materials are provided having a selected off-state viscosity and a selected on-state apparent viscosity. The method of preparing these magnetorheological materials is also provided. The carrier material, the polymeric gel and the magnetic particles are selected so that the resulting magnetorheological material has the desired off-state viscosity and on-state apparent viscosity. These materials have good dispersion characteristics, reduced settling, superior off-state viscosity and superior apparent viscosity in the presence of a magnetic field.
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