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. 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. 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. This allows you to move forward with a high processing consistency. 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. We then record the Mooney Viscosity and automatically calculate data at defined times and viscosity points. The sample material is heated for a predetermined period of time, then sheared by an embedded rotor at a constant rate. This test is the most commonly used test method for characterizing uncured rubber materials and polymers. ACE will provide you with detailed data and analysis to inform your processing plans. These three test methods are important because they allow you to understand the viscometer, elastic behavior and scorch time. The Mooney Viscometer allows us to perform a variety of tests, including Mooney Viscosity, Mooney Stress Relaxation and Mooney Scorch testing.

How to test slip viscosity