WebWe have designed and built a Capillary Breakup Extensional Rheometer (CaBER®), which is a rapid and easy method of measuring the extensional viscosity of polymer fluids. Let us help you design an applicable test array to fully characterize your material's response to an extensional flow. WebCapillary Rheometry Providing data for design packages. Thermal stability, onset of unstable flow, and wall slip measurements. Measurement of transient extensional properties as a tool to predict/troubleshoot polymer flow behaviour in many common forming processes such as extrusion, blow moulding and injection moulding.
Working Principle of Capillary Rheometers - NETZSCH
WebAug 18, 2004 · Capillary rheometry provides an efficient access to high shear rate flow properties relevant for processing. An automated gas driven capillary rheometer developed at BASF enables accurate measurements at imposed wall shear stress, thus supplementing instruments operating at imposed flow rate. WebSep 1, 2012 · This paper discusses shear viscosity measurements of polymer melts by the capillary rheometer. Particular emphasis is placed on investigating the effects of viscous … the derailers under the influence of buck
The Basics of Capillary Rheometry - NETZSCH Analyzing & Testing
WebAug 26, 2013 · In this respect it is different from a capillary rheometer, a device for measuring viscosity that can control and vary the flow rate of the test while measuring the force required to achieve that flow rate. Capillary rheometry is a controlled-shear-rate test and can provide a true measurement of viscosity, or resistance to flow. WebNov 18, 2024 · Traditionally, capillary rheometers have been used to measure the shear viscosity and elasticity of viscous materials at high shear rates. In this article and video, Natalie Rudolph (PhD) explains the working principle, parameters and their relations of the capillary rheometer. WebClassic capillary rheometry values of viscosity and shear rate at given temperatures are primarily used for design inputs, but elongational data are for the most part ignored or not fully developed. Today’s designs have essentially “evolved” through decades of experience and performance is again reportedly sufficient. There is an awareness of the deramus foundation