Rubber Mooney Viscosity Tester
The Rubber Mooney Viscosity Tester measures the viscosity of rubber under controlled temperature and shear conditions. A rubber sample is loaded into the viscometer cavity and preheated, then the rotor applies shear torque to the sample. The sample produces a resistance moment that is displayed either via a dial indicator or a connected computer, giving the Mooney viscosity value. This test is essential for evaluating processing properties and consistency of rubber compounds.
Applications
(1) Natural rubber and synthetic rubber: evaluation of processing viscosity for tire and automotive parts manufacturing.
(2) Rubber compounds: quality control during mixing and formulation.
(3) Footwear midsoles and outsoles: monitoring rubber flow and processability.
(4) Industrial rubber products: hoses, gaskets, belts, vibration dampers.
(5) Laboratory research: R&D on new rubber formulations and additives.
(6) Production monitoring: ensuring consistency of unvulcanized rubber batches.
Standards
(1) GB/T 1232 — Unvulcanized rubber: Determination of Mooney viscosity
(2) GB/T 1233 — Rubber compound: Determination of initial vulcanization characteristics — Mooney viscometer method
(3) HG/T 3242-2017 — Rubber Mooney viscometer
(4) ISO 289 — Unvulcanized rubber: Determination by shear disc viscometer
(5) ISO 667 — Rubber compound: Determination of initial vulcanization characteristics — Mooney viscometer method
Features
(1) Measures key processing property: quantifies rubber viscosity under controlled shear and temperature.
(2) Standard compliant: designed to meet GB/T, HG/T, and ISO requirements for Mooney viscosity testing.
(3) High precision: rotor speed and torque measurement are accurately controlled.
(4) Suitable for quality control and R&D: evaluates unvulcanized rubber and compounds.
(5) Easy data acquisition: torque readings can be displayed on dial or computer.
Technical Parameters
| Item | Specification |
|---|---|
| Measurement & control temperature range | Room temperature – 200℃ |
| Torque measuring range | 0 – 100 Mooney units |
| Calibration accuracy | 100 ± 0.5 Mooney units |
| Rotor speed | 2 ± 0.02 RPM |
| Measurement points | 0 – 200 points |
| Ambient temperature | 0 – 35℃ |
| Relative humidity | <80% |
| Test pressure | 11.5 kN ± 0.5 kN |
| Air pressure | 0.45 – 0.6 MPa |
Accessories
(1) User manual
(2) Delivery note
(3) Standard Mooney viscometer sample molds
(4) Electronic scale for sample weighing
(5) Scissors for sample preparation
(6) Heat insulation gloves
Test Procedures
(1) Prepare two bubble-free rubber samples: diameter ~45 mm, thickness ~3 mm; one sample with a center hole ~8 mm. Total weight ~16 g.
(2) Load the samples into the Mooney viscometer cavity.
(3) Preheat the instrument to the target temperature.
(4) Start the rotor to apply shear torque to the sample.
(5) Monitor the torque resistance via dial or computer to obtain Mooney viscosity.
(6) Record the measurement for analysis.
(7) Repeat as necessary for multiple samples.
Maintenance
(1) Keep the instrument and molds clean; remove residual rubber after each test.
(2) Check and calibrate the rotor speed and torque measurement periodically.
(3) Inspect air pressure and connections to maintain stable operation.
(4) Verify temperature control accuracy with a certified thermometer.
(5) Ensure the environment is within the specified temperature and humidity ranges.
(6) Lubricate moving parts as recommended by the manufacturer.
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