DISCONTINUOUS AND DILATANT VISCOSITY BEHAVIOR IN CONCENTRATED SUSPENSIONS .1. OBSERVATION OF A FLOW INSTABILITY

被引：685

作者：

HOFFMAN, RL

机构：

来源：

TRANSACTIONS OF THE SOCIETY OF RHEOLOGY | 1972年 / 16卷 / 01期

关键词：

D O I：

10.1122/1.549250

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The rheological dilatancy of concentrated suspensions has been studied to determine the cause of this phenomenon. Monodisperse suspensions of polymeric resins has been examined. Experimental evidence is presented which supports the hypothesis that the discontinuity of viscosity is caused by a flow instability in which surfaces of spheres, packed in a two dimensional hexagonal packing at low shear rates, break up into less ordered arrays of spheres. Although various techniques have been used, white light diffraction from a suspension under shear provides the most dramatic evidence of the ordered packing of the spheres and the order-disorder transition at the instability point.

引用

页码：155 / &

共 19 条

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