Citation:
Hasim Yilmaz. ELECTRORHEOLOGICAL PROPERTIES OF DIATOMITE/SILICONE OIL SUSPENSIONS UNDER DC FIELDS[J]. Chinese Journal of Polymer Science,
2006, 24(5): 463-471.
ELECTRORHEOLOGICALPROPERTIESOFDIATOMITE/SILICONEOILSUSPENSIONSUNDERDCFIELDS
摘要:
Inthisstudy,electrorheological(ER)behaviorofsuspensionspreparedfrom3.0and9.0mdiatomiteparticulate,dispersedininsulatingsiliconeoil(SO)mediumwasinvestigated.Sedimentationstabilitiesofsuspensions(c=5wt%)preparedusingthesediatomitepowdersweredeterminedtobe32days(d=3m)and24days(d=9m),respectively.ERactivityofallthesuspensionswasobservedtoincreasewithincreasingelectricfieldstrength,concentrationanddecreasingshearrate.Shearstressofdiatomitesuspensionsincreasedlinearlywithincreasingconcentrationsoftheparticlesandwiththeappliedelectricfieldstrength.Electricfieldviscosityofallthesuspensionsdecreasedsharplywithincreasingshearrateandparticlesize,showingatypicalshearthinningnon-Newtonianvisco-elasticbehavior.EffectsofhightemperatureandpolarpromoterontoERactivityofdiatomite/SOsystemwerealsoinvestigated.
English
ELECTRORHEOLOGICAL PROPERTIES OF DIATOMITE/SILICONE OIL SUSPENSIONS UNDER DC FIELDS
Abstract:
Inthisstudy,electrorheological(ER)behaviorofsuspensionspreparedfrom3.0and9.0mdiatomiteparticulate,dispersedininsulatingsiliconeoil(SO)mediumwasinvestigated.Sedimentationstabilitiesofsuspensions(c=5wt%)preparedusingthesediatomitepowdersweredeterminedtobe32days(d=3m)and24days(d=9m),respectively.ERactivityofallthesuspensionswasobservedtoincreasewithincreasingelectricfieldstrength,concentrationanddecreasingshearrate.Shearstressofdiatomitesuspensionsincreasedlinearlywithincreasingconcentrationsoftheparticlesandwiththeappliedelectricfieldstrength.Electricfieldviscosityofallthesuspensionsdecreasedsharplywithincreasingshearrateandparticlesize,showingatypicalshearthinningnon-Newtonianvisco-elasticbehavior.EffectsofhightemperatureandpolarpromoterontoERactivityofdiatomite/SOsystemwerealsoinvestigated.
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