Knowing how rubber is crosslinked in order to determine its processability, curing time, and ultimate properties is fundamentally important in the rubber industry.

In a tool known as the Oscillating Disk Rheometer, analyses are performed for this purpose on rubber even without vulcanizing (“green rubber”).

This apparatus displays the final physical qualities in addition to the crosslinking characteristics. A “fingerprint” of the vulcanizing process and its processability features can be seen in the rheometric curve that was obtained.

All of the vulcanization parameters of the rubber compound can be readily obtained from the torque vs. curing time curve.

The “rheometric curve” represents torque (force) versus real cure time. Three phases make up this curve:

Phase 1 (A): The first phase provides information about the rubber compound’s processing behaviour.

Phase 2 (B): Describe the rubber compound’s curing properties.

Phase 3 (C): Provides a good indication of the rubber compound’s physical characteristics.

NextGen’s RPA Ultra – Advanced Rubber Process Analyzer Rheometer Max. ramp rat is 1.33°C/s-> 80°C/m.

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