Measurement set for rheological studies
The MCR 302e rotational rheometer is an advanced device for analyzing the rheological properties of materials. It enables the study of various flow and deformation parameters of substances. Due to its modular design, the rheometer allows for customization of instrumentation to meet specific research requirements. Key Testing Capabilities:
1. Viscosity Characterization
- Measurement of dynamic viscosity as a function of shear stress, shear rate, or temperature.
- Determination of viscosity dependence over time.
2. Flow Curves
- Determination of shear stress dependence on shear rate.
- Identification of rheological models.
- Detection of yield stress in materials.
3. Structural Analysis and Thixotropy
- Examination of reversible structural changes in materials under mechanical forces.
- Measurement of structural recovery time after shear forces cease.
4. Oscillatory Dynamic Tests
- Measurement of storage modulus (G') and loss modulus (G'') as functions of frequency, stress, or temperature.
- Analysis of transitions between liquid and solid states.
- Characterization of elastic and viscoelastic materials.
5. Temperature Tests
- Determination of temperature effects on rheological properties.
- Analysis of thermal stability in materials.
6. Viscosity Changes Over Time
- Monitoring rheological changes during curing, gelation, or degradation.
- Identification of aging processes and loss of functional properties in materials.
The equipment is made available within joint research projects and according to individually agreed contracts.
The rheometer enables a comprehensive analysis of dynamic viscosity and stress as a function of shear rate, temperature, and time, including under the influence of a magnetic field or UV light. It allows the study of materials with complex rheological properties (e.g., thixotropic, dilatant, pseudoplastic), measurement of yield stress, and monitoring of viscosity changes, such as during curing. It also facilitates oscillatory tests, including the measurement of elasticity and loss moduli.
- Conventional rheological testing in a temperature range from -40°C to 200°C
- Analysis of small samples (from 15 µl to a few ml)
- Testing of ferrofluids in a magnetic field (magnetic induction up to 1 T, temperature range -10°C to 100°C)
- UV light testing (-20°C to 200°C), including at specific wavelengths (e.g., 365 nm, 320-480 nm)
- Tribological studies: Stribeck curve, friction coefficient, lubricity
Responsible body
Group / laboratory / team
Laboratory of Lubrication and Rheology