Rheometer MCR
| Make: | Anton-Paar |
| Model: | MCR-302 |
| Year of purchase: | 2014 |
| Funded by: | |
| Location: | Arkavathi |
| Contact email: | |
| Under maintenance | |
- The rheometry is driven by an Electrically Commutated (EC) motor which is supported by two air bearings (radial and axial) for improved torque control
- Torque
- - Min: 1 nN m (rotation), 0.5 nN m (oscillation); Max: 200 mN m; resolution: 0.1 nN m
- Angular deflection: 0.05 μ rad to ∞
- Angular velocity: 10-9to 314 rad/ s
- Angular frequency: 10-7 to 628 rad/ s
- Normal force: 5 mN to 50 N; resolution: 0.5 mN
- Temperature control
- -Peltier system with counter cooling forbottom plate and hood to cover top plate to give good thermal stability
- - Operating temperature range -20 oC to +200 oC;resolution: 0.01 oC.
- -Air circulation control through the hood for additional thermal stability
- Modular design of the rheometer for easily assembling the peltier plate and geometry for: standard rheological as well as dielectro, opto and magneto rheological studies
- Additional control ports:
- - Auxillary input (2 ports) for reading external devices and relays
- - Analog output (4 ports) to trigger external devices
- - Provision to read temperature with a thermocouple
- Dielectro-rheology
- • Peltier temperature control module; operating temperature range: -20 oC to +200 oC with a resolution of 0.01 oC.
- • BNC connection to apply electric field to bottom plate (peltier plate)
- • Spring attachment with BNC connection to apply electric field to top plate (geometry)
- -the spring connector facilitates continuous contact with the top plate, during rotation or oscillatory movement of the plate.
- • LCR Meter (Agilent, E4980A)to apply the probing electric field and study the capacitance, resistance, conductance and impedance characteristics of the sample
- - Voltage: 20 V max (ac); Frequency: 20 Hz to 2 MHz; DC bias: 20 V max
- • Available geometries(parallel plate; Material: Stainless steel with an insulating material in the middle & labeled as DI):
- - plate diameter 8 mm, 15 mm and 25 mm
- Opto-rheology
- • Peltier temperature control module; operating temperature range: -20 oC to +200 oC with a resolution of 0.01 oC.
- • Quartz optical window attachment to the peltier module for sample viewing
- • Halogen (150 W, 21 V) light source, Fiber-Lite MI-150(Dolan-Jenner) with fibre optic cable for continuous intensity control.
- • Microscope module with independently rotatable polarizers. Reflection geometry
- • Imaging: -CCD camera Lumenera-Infinity3; 12bit, USB 3.0 - Image and video capture; maximum resolution: 1936 x 1456.
- • Available geometries (parallel plate; Material: Quartz):
- - plate diameter 25 mm; operating temp range: -20 oC to 80 oC
- - plate diameter 43 mm, operating temp range: -20 oC to 200 oC
- Magneto-rheology
- • Magneto-rheological peltier module; max magnetic field: 1.1 T (at 5.4 A)
- • Power supply to generate magnetic field; max current: 5A
- • Specialized fluid circulator hoses to handle the high temperature during magnetic field generation
- • Available geometries (top plates); parallel plate:
- Rheology of low viscous samples
- • Peltier module with provision to insert concentric cylinders
- • Double gap geometry, i.e. flat top plate inserted within a cup;
- - 27 mm dia (inner plate); stainless steel
- • For samples with viscosity as low as ~ 1 mPa. s (i.e. comparable to viscosity of water at ambient temperature)
- Can be operated in both stress (torque) controlled and strain (displacement) controlled modes
- Oscillatory rheology:
- -strain dependence; frequency dependence; time dependence
- Creep test; temperature ramp
- Steady state rheology:
- -continuous shear ramp, time dependent flow behavior, yield stress measurement, temperature ramp
- Concentric cylindrical geometry for very low viscous liquids (viscosity as low as water)
- Dielectro-rheology
- Opto-rheology
- Magneto-rheology.
- Compatible samples:-soft solids, liquid crystals, gels, polymer melts, resins, oils, pastes, magneto-rheological fluids.
| Modes | Duration (hrs) |
|---|---|
| Oscillatory | 3 |
| Steady state | 2 |
| Opto-rheology | 3 |
| Magneto-rheology | 2 |
| Dielectro-rheology | 3 |
| Sl. No. - Category | Fees ( in Rs/- ) + additional 18% GST |
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