Rheometric Measuring Die Heads Brabender® GmbH & Co. KG
All slot capillary dies are highly polished and have a coating against corrosion and abrasion.
A precise description of the flow processes within polymer processing machines implies exact knowledge of the rheological characteristics of polymer melts, in particular of their viscosity behaviour within a wide, practice-oriented range of shear rates.
The Brabender® capillary rheometer system, consisting of a laboratory extruder with a suitable drive unit, a rheometric capillary die head, and a high-precision melt pump covers a practice-oriented range of shear rates and allows reliable statements about the material behaviour during different processing stages. The advantages compared to conventional high-pressure capillary rheometers are evident:
practice-oriented plastification under processing conditions
continuous operation
multifunctionality: processing and measuring
The program of measuring die heads is completed by several special measuring die heads:
2- and 3-stage slot capillary die heads
for the determination of shear and elongational viscosity to assess the flow behavior of the melt
Garvey die head (ASTM D 2230)
special measuring die for testing elastomers
Swelltest die head
Channel dimensions [mm]:
Ø 1 * 15 D
Ø 1 * 20 D
Ø 1 * 30 D
Ø 2 * 5 D
Ø 3 * 5 D
Ø 5 * 5 D
for measuring the swelling (visco-elastic) behaviour of extruded round strands - precisely, contact-free, and continuously through laser-scanning
04 March 2011
