Squeeze film rheology of polymer melts: Determination of the characteristic flow curve

Abstract

Abstract The advantage of the constant‐speed squeeze film flow is that the shear rate is not constant but changes with gap height and position. This allows the rheological characterization of a material to be carried out in a shorter amount of experimentation time. A method for determining the characteristic flow curve is proposed. The characteristic flow curves obtained from squeeze film flow is compared with the curves obtained from capillary rheometry are presented. © 1994 John Wiley & Sons, Inc.