DMA Parallel Plate Dynamic Rheology (3 Temperatures)


Test ID

R-022

Description

A dynamic mechanical analyzer is used. Test material in the form of pellets is sandwiched between parallel plates of the apparatus, at melt-state temperature.  The top plate is oscillated over a frequency range of 0.1 to 500 rad/s, at constant strain.  The torque transmitted through the specimen is measured.  This is used to calculate the G’ and G” curves, as well as a complex viscosity.  Measurements are taken over a range of 3 temperatures using the same sample.

Options

Samples in powder, fluid or pellet forms can also be used. Tests can be performed at more temperatures for additional cost.

Standards

  • ASTM D4440
  • ISO 6721-10

Data

Complex Viscosity v. Frequency, Modulus v. Frequency. This data appears in Matereality as Melt Rheology by DMA.

Replicates

Number of times this test is repeated: 1

Samples

0.5 kg of pellets [details]

Application

Parallel plates result in a constantly varying stress field along the radius and are not as precise as cone and plate measurements. However, they are considered adequate for many purposes and present a more economical means of obtaining dynamic data.

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