Effect of viscosity of base oil on rheological properties of titanium complex grease
In order to reveal the influence of base oil viscosity on the theological properties of complex titanium grease,four greases were prepared by using four base oils with varying viscosities,then the yield limit,thixotropy and shear-time-dependence of each grease were investigated.The morphologies of soap fibers of each grease were characterized by scanning electron microscope(SEM).Under steady shear flow conditions,the rheological parameters of each grease were tested using an R/S+rotating rheometer.Test results indicate that the soap fibers from each grease are found to form agglomerate and interconnective network morphologies,the viscosity of base oil regularly affects the theological properties of lubricating grease,and the increasing viscosity of base oils leads to the width increase of soap fibers and the cavity enlargement among them,which in turn enhances the yield limit,thixotropic energy,viscosity and shear resistance of the greases.
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