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.
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
Mechanical characterization of rubber compound
Large amplitude oscillatory shear (LAOS)
Structure-property relationship of polymer composites/rubber compounds.