DMA Cone and Plate Dynamic Rheology (1 Temperature)
Test ID
R-020
Description
A dynamic mechanical analyzer is used. A test specimen in the form of a circular disk is sandwiched between the cone and plate of the apparatus, at temperature. The cone is oscillated over a range of frequencies at constant strain and the torque transmitted through the specimen is measured. This is used to calculate the G’ and G” curves, as well as a complex viscosity.
Options
Samples in powder, fluid or pellet forms can also be used.
Standards
- ASTM D4440
- ISO 6721-10
Data
Complex Viscosity v. Frequency, Crossover, Modulus v. Frequency, Polydispersity Index, Strain Sweep. This data appears in Matereality as Melt Rheology by DMA.
Replicates
Number of times this test is repeated: 1
Samples
2 molded discs (25mm diam.) [details]
Application
The test provides a precise measurement of complex viscosity. The angle of the cone produces a constant shear stress throughout the sample. Zero shear viscosity, loss and storage moduli are results of this test.
