Die Swell Measurements by Laser MicrometryR-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.

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

Application

If expansion occurs as the material is extruded from the die, the data reported is useful for extrusion applications.

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