Rheology

Characterization

Brand

TA Instruments DHR-2

Geometries

8 – 60 mm parallel plates
60 mm cone-plate
Cup-and-bob
Torsion DMTA (solids only)
Tribology (ring-on-plate, 3-balls-on-plate)

Temperature range

-140 – +600 °C

Sample types

Fluids, suspensions, slurries, polymer melts, solids (rectangular bars)

Sample size

5 g or 10 mL

Output

Viscoelastic properties

A rheometer measures how a material flows in response to applied forces. Viscoelastic materials show both solid and fluid characteristics, depending on temperature and loading speed applied. Measurements can be performed in a rotational or oscillatory, temperature controlled mode in order to determine properties such as viscosity, storage and loss modulus, creep and relaxation. Processes like curing, gelation or drying can also be studied using rheology. Furthermore, tribological properties of materials, such as friction coefficient, can be assessed.