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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.    
Data  
Die swell ratio v. shear rate is reported. Viscosity data are also available. This data appears in Matereality as Capillary Viscosity.  
Replicates (# 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.