Technical Paper Archive

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Combining a Single Screw Extruder with a Capillary Rheometer to Facilitate Faster Measurements

C27 haake 196th technical meeting of the rubber division acs 2019 v2

Event: 196th Technical Meeting - Fall 2019
Location: Cleveland, OH
Date: October 08, 2019
Author: Tim Haake
Paper Number: C27

Price: $20.00

  • Capillary Rheometer RHEOGRAPH with the CONTIFEED option >>> The viscosity, the melt elongation rate, the die-swell, thermal conductivity or the PVT data are only some characteristic values of plastics or elastomers, which can be determined and further evaluated with the RHEOGRAPH. The test barrel is used as a reservoir of the testing material that provides the melt under specific temperature influence for the further process. Normally the operator fills the cold testing material, which is formed in a granule, powder or a flour condition, into the test barrel. The use of a manual feeder during the stepwise filling process helps keeping air bubbles inside of the melt as low as possible. Before starting the measurement the testing material is exposed to a melting time for generating a complete melt source. This time consuming process can be significantly reduced by using the option „CONTIFEED“. A small extruder feeds the test barrel directly with hot melt, respectively with testable elastomer. At the lower end of the test barrel (just above the capillary inlet) a defined amount of melt is being filled in by using of a shut-off valve. Afterwards the shut-off valve is being closed and the measurement can be started directly after a short relaxation time. The CONTIFEED offers a time saving as well as an application-oriented measuring process.

    Papers from 196th Technical Meeting - Fall 2019

    Items from 196th Technical Meeting - Fall 2019