Explanation

Also called rotational (Mooney) viscosity. The resistance shear torque value of crude rubber or rubber mixture to the rotor measured with a Mooney viscosity meter, and the shear torque of 0.083N. m is specified as one Mooney viscosity value. The measurement of Mooney viscosity value is to put the sample into the Mooney viscosity meter cavity, close the mold and preheat it for a certain time (standard is 1min), and then the rotor applies a certain shear torque to the sample. At the same time, the rotor is also subjected to the rubber resistance shear torque, and its torque is indicated by the precision load sensor, which is the Mooney viscosity value. Mooney viscosity time curve can also show the vulcanization process performance of rubber compound. Since American M. Mooney invented the Mooney viscosity meter in 1934, Mooney viscosity has become an important performance index of synthetic rubber. In the rubber industry, Mooney viscosity is commonly used to measure the plasticity of rubber to evaluate the difference between its processing properties and physical and mechanical properties, and to control the processing properties of rubber compound. The rubber with low Mooney viscosity is not easy to mixing, and it is easy to roll, so the adhesive force of the glue is low, and the physical and mechanical properties of the finished product are low; If the Mooney viscosity is too high, the plastic property of the rubber is low, it is difficult to mixing evenly and extrude, the shrinkage is large, the rolling is easy to peel off, the pattern edges and corners of the molded products are unclear, and the surface of the products is rough.

Classification