Rheological analysis of raw elastomers with the multispeed mooney shearing disk viscometer



Mooney's shearing disk viscometer is one of the most important analytical research and process control instruments for elastomers. In this paper a new method is developed for computing the shear stress and shear rate of materials from data obtained on this instrument. In addition, the non-linear viscoelastic behavior of elastomers in the viscometer is analyzed with special emphasis upon normal stress effects. Experimental data for natural rubber, SBR, and polyisobutylene are discussed.