A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Electrorheology of Non-aqueous Suspensions
An excellent electrorheological (ER) suspension is invented with composite particles consisting of polymer core and inorganic shell. When the composite particles are subjected to jetstream agitation, the ER effects are strikingly enhanced. Since the ER effects can be attributed to the shell layers on the polymer particles, the surface of inorganic particles must be barely exposed to the surrounding oil. The importance of surface conditions is demonstrated by a scaling analysis. The creep curves at low stresses for suspensions in electric fields are composed of instantaneous elastic and retarded elastic regions. But the suspensions show no elastic recovery after the removal of stresses. The creep and recovery behavior is purely plastic. The dipole-dipole interactions cause chainlike structures of particles. The development of Bingham yield stress can be derived from the ideal chain model in which the particles all align into chains of single-particle width and equal spacing. However, the model cannot predict the solidlike deformation without recovery. The thick column formed by several chains may be responsible for purely plastic responses. The particle concentrations in column are increased in nonuniform electric fields. Since the increase in particle concentration of column lead to high yield stresses, the ER performance of suspension as an overall response can be improved by the electrode design.
Electrorheology of Non-aqueous Suspensions
An excellent electrorheological (ER) suspension is invented with composite particles consisting of polymer core and inorganic shell. When the composite particles are subjected to jetstream agitation, the ER effects are strikingly enhanced. Since the ER effects can be attributed to the shell layers on the polymer particles, the surface of inorganic particles must be barely exposed to the surrounding oil. The importance of surface conditions is demonstrated by a scaling analysis. The creep curves at low stresses for suspensions in electric fields are composed of instantaneous elastic and retarded elastic regions. But the suspensions show no elastic recovery after the removal of stresses. The creep and recovery behavior is purely plastic. The dipole-dipole interactions cause chainlike structures of particles. The development of Bingham yield stress can be derived from the ideal chain model in which the particles all align into chains of single-particle width and equal spacing. However, the model cannot predict the solidlike deformation without recovery. The thick column formed by several chains may be responsible for purely plastic responses. The particle concentrations in column are increased in nonuniform electric fields. Since the increase in particle concentration of column lead to high yield stresses, the ER performance of suspension as an overall response can be improved by the electrode design.
Electrorheology of Non-aqueous Suspensions
Yasufumi Otsubo (author)
2014
Article (Journal)
Electronic Resource
Unknown
Metadata by DOAJ is licensed under CC BY-SA 1.0
Preparation and electrorheology of new mesoporous polypyrrole/MCM-41 suspensions
| British Library Online Contents | 2006
Comment on “preparation and electrorheology of new mesoporous polypyrrole/MCM-41 suspensions?
| British Library Online Contents | 2009
Graphene oxide nanocomposites and their electrorheology
| British Library Online Contents | 2013
Electrorheology Improves Transportation of Crude Oil
| British Library Online Contents | 2011
Electrorheology Of Conducting Polyaniline Composite Particles
| British Library Online Contents | 2005