Die Swell Measurements by Laser Micrometry
Test ID
R-030
Description
This test is performed on a capillary rheometer with a laser micrometer mounted directly under the capillary die to determine the increase in extrudate diameter. A shear rate sweep is performed, and die swell and viscosity are recorded simultaneously.
Options
Standards
- ASTM D3835
Data
Die Swell Ratio v. Shear Rate, 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
If expansion occurs as the material is extruded from the die, the data reported is useful for extrusion applications.
