Three parameters of Mooney Vicometer
Three parameters of Mooney Vicometer:
The Mooney Vicometer allows us to perform a variety of tests, including iscosity, Mooney Stress Relaxation and Mooney Scorch testing. These three test methods are important because they allow you to understand the viscometer, elastic behavior and scorch time.
1. Final Mooney Viscosity
This test is the most commonly used test method for characterizing uncured rubber materials and polymers. The sample material is heated for a predetermined period of time, then sheared by an embedded rotor at a constant rate.
We then record the Final Mooney Viscosity and automatically calculate data at defined times and viscosity points. With state-of-the-art equipment and highly trained, experienced laboratory technicians, this test method makes it simple to differentiate between different grades and types of polymers. This allows you to move forward with a high processing consistency.
2.Elasticity: Mooney Stress Relaxation
Unlike Mooney Viscosity testing, which only provides insight into the flow, or viscosity, of rubber and polymers, Mooney Stress Relaxation testing can assess elastic material behavior.
If you’re interested in understanding your material’s elastic behavior in addition to its viscosity, the two tests can be performed in tandem on the same sample. To add on a Mooney Stress Relaxation test, your technician will observe and record the torque decay after the rotor stops for the viscosity test. They will then calculate the slope-intercept and regression coefficient, providing you with important correlations between polymer branching and processing.
Mooney Scorch testing is incredibly useful to determine the starting of the curing of rubber compounds, also known as the rubber’s scorching behavior. This test provides crucial data to aid in decision-making around production processes as well as a thorough check of your material’s consistency.