Mooney Viscometer
Product Details:
We manufacture mooney viscometer which is a type of shearing disk viscometer, specifically designed for accurate measurement of viscosity, scorch time and cure rates of the elastomers. The instrument consists of flat, cylindrical disk, driven by a motor to rotate slowly and continuously in one direction. This disk is implanted into elastomers specimen, which is confined in a heated die cavity maintained at specified temperature and kept closed by a specified force. As the disk rotates, it experiences a shear strain. This resistance to rotation offered by the elastomer, is shearing viscosity which is proportional to the mean absolute viscosity of the specimen.
 
Normally a preheat period is given to the elastomer following which the disk starts rotating. An initial high viscosity is recorded and then as the viscosity also decreases, to a minimum value. Viscosity obtained with large rotor are approximately twice those of small rotor.
 
The viscosity is reported as under:
Method of sample preparation
Mooney viscosity number
Rotor size
Preheat time
Time interval to viscosity reading
Temperature of test
 
Typical test results are started as under= 50ML (I 4) 100C
 
Where
50M = Viscosity in mooney units.
L = Large rotor (for small replace it with `S¿).
I = Preheat time in minutes.
4 = Time in minute after starting the motor at which the reading is taken
100 C = Test temperature