Melvin Mooney

Melvin Mooney devised an instrument to measure the stiffness of uncured compounds, also known as the compound s viscosity. The unit of measurement is expressed in Mooney units. Figure 28.1 shows an instrument set up for measuring viscosity, the Mooney viscometer, in which a knurled knob (rotor) rotates (at 2 revolutions per minute) in a closed heated cavity filled with rubber [2]. 

The Mooney viscometer was developed by Melvin Mooney of the U.S. Rubber Co. in the 1930s and was adopted as the standard method for controlling the quality of GR-S (SBR) by the Technical Committee of the Rubber Reserve Co. in 1942 [91). Since then, the Mooney viscometer has become the standard method for testing raw rubber as well as mixed stocks. A cross section of the Mooney viscometer is shown in Fig. 22. This method consists of rotating a special serrated rotor while embedded in a rubber sample within a... 

The earliest and still one of the most popular rheologieal instruments is the shearing disk viscometer. This is generally referred to as the Mooney Viscometer named after Melvin Mooney (1893-1968) of U.S. Rubber. 

Melvin M. Mooney is best known for the development of an instrument for determining the plasticity (viscosity) of unvulcanised elastomers. 

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