ASTM D3835-16
- Standard Test Method for Determination of Properties of Polymeric Materials by Means of a Capillary Rheometer
- standard by ASTM International, 05/01/2016
- Category: ASTM
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1.1 This test method covers measurement of the rheological properties of polymeric materials at various temperatures and shear rates common to processing equipment. It covers measurement of melt viscosity, sensitivity, or stability of melt viscosity with respect to temperature and polymer dwell time in the rheometer, die swell ratio (polymer memory), and shear sensitivity when extruding under constant rate or stress. The techniques described permit the characterization of materials that exhibit both stable and unstable melt viscosity properties.
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