Abstract
For unfilled rubber materials, a penetrating method was adopted to improve the performance of measurement of Mooney viscosity.
When a needle just like a rocket is penetrated into rubberlike materials at a constant rate, the force received by the needle increases with increasing penetration depth. The work obtained from the area of the plot of force vs. depth was called PW by us. Correspondence of PW to Mooney viscosity was well. The sensitivity of the penetrating response is quite good over a wide range of the plasticity with good reproducibility. Moreover, the inhomogeneity of plasticity in the sample can be also measured simultaneously. PW value was represented by a linear relationship against logarithmic penetrating rates.
According to the results of the experiment, this method can be applied to on-line measurement of process.
