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Rubber Process Analyzer

Rubber Process Analyzer

The Rubber Process Analyzer with computerized control, data acquisition, and analysis system in the Thermal and Rheological Characterization Laboratory.

The TA Instruments RPA elite rubber process analyzer (RPA) is a strain-controlled rotational shear rheometer for the characterization of polymers, composites, rubber and rubber compounds. The instrument is capable of applying larger torque to characterize relatively stiff materials of interest.

Related Publication

Ran Tao, Kirk D. Rice, Aaron M. Forster, Rheology of Ballistic Clay: The Effect of Temperature of Temperature and Shear History, Society of Plastics Engineers’ Annual Technical Conference, Anaheim, CA, May 2017.


Frequency: 0.001 to 50 Hz

Strain: 0.07 % to 5000 %

Torque: 0.01 to 25 Nm

Temperature: 18 °C to 230 °C (enhanced cooling system)

Platen sealing pressure: 1 to 8 bar adjustable

Test modes: Strain sweep (LAOS available), frequency sweep, stress relaxation, isothermal cure.

Data processing software

Scientific Opportunities/Applications

Mechanical characterization of rubber compound

Polymer/rubber processing.

Large amplitude oscillatory shear (LAOS)

Structure-property relationship of polymer composites/rubber compounds.

Created October 18, 2017, Updated November 15, 2019