Active view current version of standard. Translated Standard: Russian. Other Historical Standards. More D Mooney viscosity is defined as the shearing torque resisting rotation of a cylindrical metal disk or rotor embedded in rubber within a cylindrical cavity. The dimensions of the shearing disk viscometer, test temperatures, and procedures for determining Mooney viscosity are defined in these test methods.
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Mooney viscosity is defined as the shearing torque resisting rotation of a cylindrical metal disk or rotor embedded in rubber within a cylindrical cavity. The dimensions of the shearing disk viscometer, test temperatures, and procedures for determining Mooney viscosity are defined in these test methods. Stress relaxation is also a function of the test configuration and for these test methods the results are unique to the Mooney viscometer.
These test methods include procedures for measuring the initial rate of rubber vulcanization. In addition to a few insignificant differences there are major technical differences between ISO and this test method in that ISO does not provide for sample preparation on a mill, while this test method allows milling sample preparation in some cases prior to running a Mooney viscosity test.
This can result in different viscosity values for some rubbers. The values given in parentheses are for information only. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
ASTM D ASTM D a. A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. Scope 1. Mooney viscosity is de?
Historical Version s - view previous versions of standard. More D Since rubber behaves as a non-Newtonian fluid, no simple relationship exists between the molecular weight and the viscosity. Therefore, caution must be exercised in interpreting viscosity values of rubber, particularly in cases where molecular weight is very high. For these higher molecular weight rubbers, better correlation between viscosity values and molecular weight is obtained if the test temperature is increased. Viscosity and stress relaxation behavior do not depend on such factors as molecular weight and non-rubber constituents in the same way. Thus both of these tests are important and complement each other.
If you have forgotten your password, please enter your email address below and click "Reset Password". A new password will be assigned to your account and emailed to you. The test methods in this standard measures Mooney Viscosity, the shearing torque resisting rotation of a cylindrical metal disk or rotor embedded in rubber within a cylindrical cavity. Note: Viscosity as used in these test methods is not a true viscosity and should be interpreted to mean Mooney viscosity.