Mooney viscosity, also known as rotational (Mooney) viscosity, is a value measured with a Mooney viscometer. It can basically reflect the degree of polymerization and molecular weight of synthetic rubber.
Mooney viscosity reflects the quality of rubber processing performance, molecular weight and distribution range. Rubber materials with high Mooney viscosity are difficult to mix evenly and process by extrusion. They have high molecular weight and wide distribution range. The rubber with low Mooney viscosity is easy to stick to the roller. It has low molecular weight and narrow distribution range. If the Mooney viscosity is too low, the tensile strength of the vulcanized product will be low. The Mooney viscosity-time curve can also show the vulcanization process performance of the rubber compound.
Mooney viscosity mainly affects processing performance. High Mooney viscosity will cause certain difficulties in the mixing and extrusion processes. However, high viscosity and high shear force result in excellent mechanical properties of the final rubber compound.
The Mooney viscosity value is closely related to plasticity. A high viscosity value indicates that the rubber has a large molecular weight and poor plasticity. On the contrary, the rubber has a small molecular weight and good plasticity. Reasonable control of the rubber Mooney viscosity value is beneficial to the mixing, calendering, and Processing processes such as extrusion, injection and molding vulcanization, so that the vulcanized rubber can obtain good physical and mechanical properties.
ViscoTron Rubber Mooney Online Viscometer uses the torque micro-oscillation principle to measure viscometry. After the drive coil is energized, it excites the cross beam and drives the drive shaft connected to the sensor probe to twist back and forth, thereby generating micro-amplitudes on the surface of the sensor probe. resonant shear wave. When
is working, after the sensor is completely immersed in the liquid, since different liquids have different viscosities, phase changes of different amplitudes occur between the liquid and the sensor probe surface; at this time, the sensor amplitude resonates shear waves, and as the viscosity As the amplitude increases, the resonance period will attenuate faster; the VT-IRFTx transmitter uses electrical measurement to measure its amplitude attenuation, amplifies and rectifies the attenuated waveform, and uses FFT to calculate the comprehensive voltage value of the envelope. The transmitter converts this voltage signal into the real viscosity value of the liquid through FFT, and displays it digitally. For more than 30 years,
company has focused on the R&D and manufacturing of online viscometers. The online viscometer it produces uses the principle of torque micro-oscillation to measure viscosity. It is an online viscometer suitable for production processes because it has the following characteristics ：
1. The inspection plan ranges from low viscosity 0.5mpa·s to ultra-high viscosity 5,000,000 mpa·s; there are suitable models to choose from. 2. There are no tumbling mixing components (such as motors, automatic mixers, pistons, etc.), so the ViscoTron Rubber Mooney Viscometer does not require any additional consumables and is maintenance-free.
3. Easy installation: It can be connected directly with standard sizes, and the sensor can be installed in the reactor or pipeline without adding a motor, stirring or bypass to the pipeline.
4, can monitor the viscosity and temperature in the on-site process, as well as the on-site vibration amplitude.
