Capillary Rheology of Thermoplastics: An Overview

Generally, capillary rheometers are used to measure melt properties at higher shear rates compared to rotational rheometers, allowing determination of flow behavior under typical processing conditions. Thermoplastics can be characterized using a Kinexus Rotational Rheometer, but also with the Rosand Capillary Rheometer.

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Material Science in Additive Manufacturing: Melt Rheology in Material Extrusion Using Capillary Rheometry

In this episode, will correlate the results that are relevant for the filament extrusion to the melt rheology inside the material extrusion head using the capillary rheometer.

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Material Science in Additive Manufacturing: Relevant parameters for production of filament

Based on our past episode about analysis methods used in material extrusion (ME), we are going to talk about the relevant parameters for production of the filament used in ME today. Learn how to measure the shear-dependent viscosity using the ROSAND capillary rheometer.

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Material Science in Additive Manufacturing: Melt Rheology in PBF Using Rotational Rheometry

In Powder bed fusion there is no flow and no shear rate. For powder coalescence, the local molecular motions and entanglements across the layers are important. So today, Dr. Natalie Rudolph will be focusing on the rotational rheometry.

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How to Operate the Rosand RH2000 Capillary Rheometer

How To _Rosand RH2000_Remmler_NETZSCH

The Rosand RH2000 Capillary Rheometer is an instrument that analyzes the flow properties of any type of material under processing conditions, like high forces and high speeds. Our rheology specialist, Torsten Remmler, shows how to prepare the instrument for an experiment and gives important tips when operating it.

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Working Principle of Capillary Rheometers

NETZSCH_Rosand_Capillar Rheometer

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.

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