How Mooney Viscometer works
Mooney Viscometer is an instrument used to measure the Mooney viscosity of raw rubber or rubber compound. It provides three measurement data, one is the measurement of Mooney viscosity, the other is the measurement of stress relaxation characteristics, and the third is the measurement of scorch time.
Mooney Viscometer is a standard rotor, using imported intelligent digital temperature control instrument, easy to adjust and set, and wide temperature control range. The microcomputer adopts imported chips with high reliability, and all data can be automatically graphed, calculated and printed. The Mooney Viscometer manufacturer tells you to rotate in the sample in a closed chamber at a constant speed (usually 2 rpm). The shear resistance of the rotor rotation is related to the viscosity change of the sample during the vulcanization process. It can be displayed on the dial with Mooney as the unit by the force measuring device, and the value can be read at the same time interval to make Mooney vulcanization. In the curve, when the Mooney number first drops and then rises, the time when it rises 5 units from the lowest point is called the Mooney scorch time, and the time when the Mooney scorch point rises by 30 units is called the Mooney vulcanization time.
Mooney Viscometer reflects the quality of rubber processing performance, the level of molecular weight and the wide range of distribution. The manufacturer of Mooney Viscometer tells you that the high Mooney viscosity compound is not easy to be mixed uniformly and extruded. Its molecular weight is high and the distribution range is wide. Low Mooney viscosity rubber is easy to stick to the roller, its molecular weight is low, and its distribution range is narrow. If the Mooney viscosity is too low, the tensile strength of the cured product will be low. Mooney Viscometer time curve can also see the rubber vulcanization process performance.