Effect of Temperature on the Shear-Thickening Behavior of Fumed Silica Suspensions.
作者： Justin Warren , Sean Offenberger , Hossein Toghiani , Charles U. Pittman , Thomas E. Lacy
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摘要: Shear-thickening fluids (STFs) can be subjected to a significant temperature variation in many applications. Polymeric or oligomeric are commonly used as suspending media for STFs. Because the viscosities of polymeric strongly temperature-dependent, large changes profoundly affect shear-thickening responses. Here, effect on behavior four low-molecular-weight glycols/fumed silica suspensions is reported. The dispersed-phase volume fraction, its surface chemistry, and chemical compositions were varied. These factors influence viscosity interactions between suspended particles media. Fumed with two different silanol-group densities glycols, where these silanol groups formed hydrogen bonds media’s glycols internal oxygen atoms. Steady-shear experiments performed ove...
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