In the rheometric curve, the following values are obtained automatically by the same device:
- MI, ML, MH/MHR torque values (strength)
Time values include ts1, ts2, tc10, tc50, and tc90.
Thermoplasticity, cure speed, and reversion time are derived values.
The viscosity of the unvulcanized substance provides minimal torque.
The safety procedure is measured by the curing time.
The shear modulus or stiffness of the rubber compound is measured by the total curve.
MI (Initial Torque) (Initial Torque). It is the torque that was measured at test-start time zero.
The viscosity and torque of the compound decrease as it heats under pressure, according to the ML (minimum torque) formula. The term “ML” refers to the lowest registered torque measurement. It essentially serves as a gauge for the non-vulcanized compound’s stiffness and viscosity.
MH (Maximum Torque): The torque rises proportionately as curing starts.
The slope of the rising torsion varies depending on the type of compound. The pair typically reaches its maximum value after some time. Curing reversal takes place, and the torque tends to drop if the test is run long enough. The “reversion curve” is the name given to this particular reversal curve.
NextGen’s RPA Ultra – Advanced Rubber Process Analyzer Rheometer Max. cool rat is 0.5°C/.
Click here to obtain a personal quote.