Very High Shear Capillary Rheology (1 Temperature)
Test ID
R-013
Description
Due to the need for a small diameter die, this test can only be performed on unfilled materials. The sample, dried if needed, is loaded into a preheated test barrel of a capillary rheometer. A range of flow rates is used, attempting to cover a shear rate range of 100-175,000 /s. A smaller diameter die is used to achieve the higher shear rates. Pressure drop across the die is measured for each flow rate, and viscosity-shear rate data are calculated. Weissenberg-Rabinowitsch corrections are performed.
Options
Pressure can also be made using a load cell instead of a pressure transducer.
Standards
- ASTM D3835
Data
Shear Viscosity v. Shear Rate. This data appears in Matereality as Capillary Viscosity.
Replicates
Number of times this test is repeated: 1
Samples
0.5 kg of pellets [details]
Application
This test provides a fundamental measure of the flow characteristics of a plastic. Data can describe the dependency of viscosity on shear rate. Tests at multiple temperatures yield temperature dependency of viscosity.
