Rheological testing
Exploring the flow properties of polymers
Our equipment consisting of rotational and high-pressure capillary rheometers measures rheological properties as a function of temperature, time, and deformation rate. In doing so, viscoelastic properties are investigated in the ranges of small as well as large shear and strain rates. We draw on our experience with a wide variety of polymer materials such as homopolymers, polymer blends, nanocomposites, block copolymers, and compounds.
Contact: M.Sc. Justus Kuhnigk
Phone: +49 921 55 7440
E-mail: justus.kuhnigk@uni-bayreuth.de
The MCR 702 with MultiDrive technology and two independent air-bearing motors enables the following measuring modes:
- DMA in tension, bending, and compression with lower, air-bearing linear motor
- DMA in torsion with upper, air-bearing rotary motor
- Shear rheology with upper air-bearing rotary motor
- A combination of linear drive and rotation motor in one test
Linear actuator for DMA in tension, bending, and compression
Force [N] 0.0005 – 40
Path amplitude oscillation [µm] +/- 0.01 – 4500
Temperature range [°C] -130 – 600 (convection oven)
Heating rate [K/min] 35
Cooling rate [K/min] 30
Rotary operation for DMA in torsion and rheology
Maximum angular frequency ω [rad/s] 628
Angular velocity [rad/s] 10-9 – 314
Maximum torque [mNm] 230
Min. torque rotation [nNm] 1
Min. torque oscillation [nNm] 0.5
Torque resolution [nNm] 0.1
Normal force range [N] 0.005 – 50
Normal force resolution [mN] 0.5
Temperature range [°C] -130 – 450 (convection oven)
Features
Plate-plate (PP25), solid-state fixture (SRF5), cantilever (CTL35), compression (PP25), three-point bending (TPB10/TPB20/TPB40)1
Software
RheoCompass
Location: University of Bayreuth
Maximum angular frequency ω [rad/s] 628
Shear rate [1/s] 0.01 – 100
Maximum torque [nNm] 150.0
Torque resolution [nNm] 0.01
Normal force range [N] 0.05 – 50
Temperature range [°C] 25 – 200
Features
Pressure cell: 400 bar / 200°C
Software
RheoCompass
Location: University of Bayreuth
Maximum angular frequency ω [rad/s] 628
Shear rate [1/s] 0.01 – 100
Maximum torque [nNm] 150.0
Torque resolution [nNm] 0.01
Normal force range [N] 0.05 – 50
Temperature range [°C] 25 – 200
Features
Pressure cell: 400 bar / 200°C
Software
RheoPlus, RheoCompass
Property of Neue Materialien Bayreuth GmbH
Location: University of Bayreuth
Maximum angular frequency ω [rad/s] 500
Shear rate [1/s] 0.001 – 100
Torque [nNm] 0.2 – 200.0
Maximum force [N] 150
Angle range [mrad] 0.05 – 500
Temperature range [°C] -150 – 600
Number of units 2
Features
Plate – Plate, Cone – Plate, Extensional Viscosity Fixture (EVF), Disposable Plates
Software
RSI Orchestrator, TA Orchestrator
Location: University of Bayreuth
Measuring field [mm] 32
Location: University of Bayreuth
Detailed description to come.
Location: University of Bayreuth
Contact: M. Sc. Andreas Himmelsbach
Phone: +49 921 55 7462