Oscillating Disc Rheometer
Moving Die Rheometer
Mooney Viscometer
Abrasion Testing Machine
Bond Peel Adhesion Test
Compression Set Device
Impact Tester
Shore Hardness Tester
Hardness Tester(IRHD)
Specific Gravity Balance
Spring Testing Machine
Tearing Strength Tester
Thickness Testing
Resilience Tester
Coeffecient of Friction Tester
Spark Tester
Salt Spray Corrosion Chamber
Demattia Flex Tester
Ross Flex Tester
Specimen Cutting Press
Specimen Cutting Dies
Mooney Viscometer is a shearing disk viscometer, designed for accurate measurement of viscocity, 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 embedded into elastomer specimen which is confiend in a heated die cavity maintained at specified temprature and kept closed by a specified force. As the disk rotates its experiences a shear strain. This resistance to rotates offered by the elastomer is shearing viscosity which is proportional to mean absolute viscosity of the specimen.

Normally a preheat period is given to the elastomer following which the disk starts to rotate. A 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
  • Tamperature of test
Typical test results are started as under
= 50ML(I+4) 100C

  • 50M = Viscocity 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 temprature

Specification Rishikesh-Viscosoftware

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