ASTM D covers the test methods for measuring Mooney Viscosity, Mooney Stress Relaxation, and Mooney Scorch. Mooney Viscosity and Stress Relaxation . This standard is issued under the fixed designation D ; the number 1 These test methods are under the jurisdiction of ASTM Committee D11 on. Standard Astm d – Download as PDF File .pdf), Text File .txt) or read online.

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The dimensions of the shearing disk viscometer, test temperatures, and procedures for determining Mooney viscosity are defined in these test methods. Thus both of astm d1646 tests are important and complement each other. Viscosity as used in these test methods is not a true astm d1646 and should be interpreted to mean Mooney viscosity, a measure of shearing torque averaged over a range of shearing rates.

Historical Version s – view previous versions of standard. Historical Version s – view previous versions of standard Translated Version s: These test methods include procedures for measuring the initial rate of rubber vulcanization. For these higher molecular weight rubbers, better correlation between viscosity astm d1646 and molecular weight is astm d1646 if the test temperature is increased. Referenced Documents purchase astm d1646 The documents listed below are astm d1646 within the subject standard but are not provided as part of the standard.

Active view current version of standard. 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.

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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.

Testing Standards List

Viscosity and stress relaxation d16466 do not depend on such factors as molecular weight and non-rubber constituents in the same way. This can result in different viscosity values for some astm d1646. These test methods include procedures for measuring the initial rate of rubber vulcanization. This is called ‘stress relaxation’ and these test methods describe a test method for measuring this relaxation.

Stress relaxation is also a function of the test configuration and for these test astm d1646 sstm results are unique to the Mooney viscometer. astm d1646

ASTM D1646

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The rate of stress relaxation has been found to correlate with rubber structure characteristics such as molecular weight distribution, chain branching, and gel content.

Mooney viscosity is defined as the shearing torque resisting rotation of a cylindrical metal disk or rotor embedded in rubber astm d1646 d16646 cylindrical cavity.

The values given in parentheses are for information only. Therefore, caution must be exercised in interpreting viscosity values of rubber, particularly in cases where molecular weight is very high.

It astm d1646 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 d1646 viscosity is defined as the shearing torque resisting rotation of a cylindrical metal disk or rotor embedded in rubber within a cylindrical cavity. It sstm the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of astm d1646 limitations prior to use.

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Link to Active This link astm d1646 always route to the current Active version of the standard. The values given in parentheses are for information only.

Therefore, this test method can be used to astm d1646 incipient cure scorch time and the rate of cure during very early stages of vulcanization.

The dimensions of the shearing disk viscometer, test temperatures, and procedures for determining Mooney viscosity are defined in these test methods.

Since rubber behaves as a non-Newtonian fluid, no simple relationship astm d1646 between the molecular weight and the astj. Link to Active This link will always route to the current Active version of the standard. This can result astm d1646 different viscosity values for some rubbers.

This astm d1646 method cannot be used to study complete vulcanization because the continuous rotation of the disk will result in slippage when astm d1646 specimen reaches a stiff consistency. Viscosity as used in these test methods is not a true viscosity and should be interpreted to mean Mooney viscosity, a measure of shearing torque averaged over a range of shearing rates.

Stress relaxation is also a function of the test configuration and for these test methods the results are unique to the Mooney viscometer. A slow astm d1646 of relaxation indicates a higher elastic component in the overall response, while a rapid rate of relaxation indicates a higher viscous component.