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Application
Notes:
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Mooney viscosity
is
the
measure of the
resistance of raw or unvulcanized rubber
to deformation, as measured in a Mooney viscometer by
ASTM-D- 1646. A steel disc is embedded in a
heated rubber specimen and slowly rotated. The resistance to the shearing
action of the disc is measured and expressed as a Mooney
viscosity value. Viscosity increases
with continued rotation, and the time required to produce a specified rise
in Mooney viscosity is known as the Mooney scorch value, which is an
indication of the tendency of a rubber mixture to cure, or vulcanize,
prematurely during processing
Also see
vulcanization.
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- Analytical Almanac
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