Abstract
In order to improve the stability of magnetorheological (MR) fluids, viscoelastic medium having 2.2 Pa yield stress has been used as a continuous phase and nanosized CrO2 particles are added too. The rheological properties as well as the dispersion stability of MR fluids have been studied by using a stress-controlled rheometer and sedimentation test. The steady-shear MR response was independent of the continuous and nano additives and the field-induced yield stress increased subquadratically with the flux density. Since the constant stress is generated within the limit of zero shear rate, the plateau in the flow curve corresponds to the Bingham yield stress. Under an external field, the yield stress varied as B3/2. The yield stress has an approximately linear relation with the particle volume fraction.
| Original language | English |
|---|---|
| Pages (from-to) | 580-585 |
| Number of pages | 6 |
| Journal | Korean Journal of Chemical Engineering |
| Volume | 18 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2001 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Chemical Engineering(all)
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Rheological Properties and Stability of Magnetorheological Fluids using Viscoelastic Medium and Nanoadditives. / Park, Jong Hyeok; Kwon, Moo Hyun; Park, O. Ok.
In: Korean Journal of Chemical Engineering, Vol. 18, No. 5, 01.01.2001, p. 580-585.Research output: Contribution to journal › Article
TY - JOUR
T1 - Rheological Properties and Stability of Magnetorheological Fluids using Viscoelastic Medium and Nanoadditives
AU - Park, Jong Hyeok
AU - Kwon, Moo Hyun
AU - Park, O. Ok
PY - 2001/1/1
Y1 - 2001/1/1
N2 - In order to improve the stability of magnetorheological (MR) fluids, viscoelastic medium having 2.2 Pa yield stress has been used as a continuous phase and nanosized CrO2 particles are added too. The rheological properties as well as the dispersion stability of MR fluids have been studied by using a stress-controlled rheometer and sedimentation test. The steady-shear MR response was independent of the continuous and nano additives and the field-induced yield stress increased subquadratically with the flux density. Since the constant stress is generated within the limit of zero shear rate, the plateau in the flow curve corresponds to the Bingham yield stress. Under an external field, the yield stress varied as B3/2. The yield stress has an approximately linear relation with the particle volume fraction.
AB - In order to improve the stability of magnetorheological (MR) fluids, viscoelastic medium having 2.2 Pa yield stress has been used as a continuous phase and nanosized CrO2 particles are added too. The rheological properties as well as the dispersion stability of MR fluids have been studied by using a stress-controlled rheometer and sedimentation test. The steady-shear MR response was independent of the continuous and nano additives and the field-induced yield stress increased subquadratically with the flux density. Since the constant stress is generated within the limit of zero shear rate, the plateau in the flow curve corresponds to the Bingham yield stress. Under an external field, the yield stress varied as B3/2. The yield stress has an approximately linear relation with the particle volume fraction.
UR - http://www.scopus.com/inward/record.url?scp=0035619585&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035619585&partnerID=8YFLogxK
U2 - 10.1007/BF02706371
DO - 10.1007/BF02706371
M3 - Article
AN - SCOPUS:0035619585
VL - 18
SP - 580
EP - 585
JO - Korean Journal of Chemical Engineering
JF - Korean Journal of Chemical Engineering
SN - 0256-1115
IS - 5
ER -