三种不同基体中玻璃微球悬浮体系的流变行为

三种不同基体中玻璃微球悬浮体系的流变行为吴大诚，陈军武，徐建军，杜鹏，顾群，李玉景（成都科技大学纺织工学院成都６１００６５）关键词高分子流变学，Ｂｏｇｅｒ流体，悬浮体，聚异戊二烯悬浮体的流体动力学研究始于本世纪初，Ｅｉｎｓｔｅｉｎ“对极稀悬浮体粘度的...

RHEOLOGICAL PROPERTIES OF GLASS BEAD SUSPENSIONS IN THREE DIFFERENT FLUIDS

he rheological properties of glass beads suspensions in three difference matrices,i.e.Newtonian fluid, Boger fluid and concentrated polymer solution,were investigated.In this paper it analyzed the influence of the shear rate γ on viscosities and first normal stress differences N1 of these suspensions with the different volume fraction φ of glass beads in the different matrices. There was not any first normal stress difference N1 for the suspension based on Newtonian fluid at all.For suspension in the concentrated polymer solution the linear relationship of logarithmic values of N1 and γ was found. The slope of lgN1 ￣ lgγ was decreased with increasing φ.Although this linearity exacts for Boger fluid itself, the nonlinearity relation of lgN1 ￣lgγ is obvious for its suspensions.With increasing γthe ratio N1r between first normal stress differences for the suspension and their matrix of Boger fluid was increasing at the low range of γ,through a maximum, then decreasing at the high range of γ in addition, the higher the value φ,the larger the value of N1r and the smaller the value of γ corresponding to the maximal N1r.