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TA Instruments DHR3 Rheometer
The Discovery Hybrid Rheometer is a rotational shear rheometer with a range of measurement options that include viscosity, shear stress, storage and loss modulus, strain, and phase angle. The geometries available include 40 mm parallel plate, 25 and 40 mm 2° cones, and cup and rotor with options of a vaned or conical rotor. It has three heating system options, peltier plate, peltier concentric cylinders, and an environmental test chamber. Specifications:
- Torque, minimum oscillation 0.5 nN*m, minimum steady shear 5 nN*m, maximum 200 mN*m;
- Torque resolution, 0.05 nN*m;
- Frequency, 1.0E-07 to 100 Hz, Angular velocity, up to 300 rad/s;
- Strain step time, 15 ms;
- Rate step time, 5 ms;
- Maximum normal force, 50 N;
- Normal force sensitivity, 0.005 N;
- Normal force resolution, 0.5 mN;
UV Curing accessory:
The UV curing accessory allows for room temperature characterization of cure Kinetics for UV active materials in the 320-500nm range on the DHR3 Rheometer. It consists of a mercury vapor lamp and a light guide to direct light through a transparent lower plate onto the sample. Optical filters allow specific measurement at 365nm and band pass at 400-500nm. Output intensities up to 300 mW/cm² are possible. Geometry options are limited to a 20mm disposable aluminum upper plate and quarts or acrylic lower plate. This fixture was also purchased in conjunction with a Photo Curing Accessory for use with our Q1000 DSC for acquiring complementary cure kinetics through calorimetry.
For rates information, please see the rates page.
Philip Carubia
607/255-6757
pmc228@cornell.edu
Bard Hall, Room B-57