Almost 50 years of experience in the rheological testing of elastomer compounds have led to a new testing instrument – the RPA rotational. The Rubber Process Analyzer (RPA) is used to analyze rubber compounds in both the plastic and vulcanized states as well as to characterize crosslinking behavior. In conventional RPAs, the lower die half is driven with a sinusoidal rotational motion (oscillation), while torque and normal force transmitted through the sample are measured at the upper die half. In addition, cure isotherms, temperature sweeps, relaxation, or ramp tests can be performed.

learn more