Learn with any
mixture Intelligent
measuring mixers simplify your quality control.
A
typical mixer test is run at a defined rotor speed (shear rate). The material?s
response to the shear is recorded as torque and displayed versus time. As a
material?s properties are very sensitive to temperature, the mixer chamber is
separated into different sections. These are individually temperature-controlled
by the Thermo Scientific HAAKE PolyLab QC
. Optimum temperature control quality can be achieved by
an automated recognition of the connected mixer.
Product Detail
Although
the temperature of the mixing chamber is constantly controlled, the material’s
melt temperature during a test may rise due to the shear introduced. The melt
temperature is also recorded during the test by a separate thermocouple. The
recorded “Rheogram” (torque and melt temperature vs. time at constant speed) is
characteristic for different material types and blends. It can be used as a
fingerprint in quality control for outgoing and incoming product inspections. As
changes in torque are related to structural changes in the material, a Rheogram
can be used to investigate and verify reactions of different additive types or
concentrations on the sample’s melting behavior.
Typical
Investigations
Testing the melting and degradation behavior of polymer
melts
Quantifying viscosity when adding nano particles or other
additives
Testing gelation- and plastification behavior of PVC
dry-blends
Measuring the flow- and curing behavior of thermosetting
plastics
Characterizing the influence of different additives such as carbon black,
fillers lubricants, accelerators and sulfur for rubber
mixtures
Recording the masticating and vulcanizing behavior of
elastomers
Measuring oil absorption of carbon black
Quantifying the absorption of DOP for PVC dry-blends
Measuring the stable torque in regard to individual and combined influences of
fillers and additives such as stabilizers, lubricants and color
pigments
Testing high performance plastics to check processability
Performing electric conductivity measurements for rubber
mixtures
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