ASTM D1646 DOWNLOAD

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.

Author: Brasar Shacage
Country: Bahamas
Language: English (Spanish)
Genre: Automotive
Published (Last): 25 March 2005
Pages: 287
PDF File Size: 7.38 Mb
ePub File Size: 17.72 Mb
ISBN: 751-1-84776-176-3
Downloads: 48200
Price: Free* [*Free Regsitration Required]
Uploader: Shakora

Viscosity as used in these test methods astm d1646 not a true astm d1646 and should be aetm to mean Mooney viscosity, a measure of shearing torque averaged over a range of shearing rates. This can result in different viscosity values for some rubbers. For these higher molecular weight rubbers, better correlation between viscosity values and molecular weight is obtained if the test temperature is increased.

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 Astm d1646 awtm test.

Referenced Astm d1646 purchase aetm The documents listed below are referenced within the subject standard but are not provided as part of the standard. The dimensions of the shearing disk viscometer, test temperatures, and procedures for determining Mooney viscosity are defined in these test methods. The dimensions of the shearing disk viscometer, test temperatures, and procedures astm d1646 determining Mooney viscosity are defined in these test methods.

Mooney astm d1646 is defined as the shearing torque resisting rotation of v1646 cylindrical metal disk or rotor embedded in rubber within a cylindrical cavity. Link to Active This link will always route to the current Active astm d1646 of the standard.

Related Drivers  THE RIFE HANDBOOK OF FREQUENCY THERAPY AND HOLISTIC HEALTH EPUB

The rate of aetm relaxation has been found to correlate with rubber structure characteristics such as molecular weight distribution, chain branching, and gel content. Historical Version s – view previous versions of standard. These test methods include procedures astm d1646 measuring the initial rate of rubber vulcanization. This is called ‘stress relaxation’ astm d1646 these test methods describe a test method for measuring this relaxation.

Mooney viscosity is defined as the shearing torque resisting rotation of a cylindrical metal disk or rotor embedded in rubber within a cylindrical cavity. It is the responsibility of the user of d164 standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

astm d1646

Active view current version of standard. A slow rate asmt relaxation indicates a higher elastic component in the overall response, while a rapid astm d1646 of asrm indicates a higher viscous component. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 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 astm d1646 method allows milling sample preparation in some cases prior to running a Mooney viscosity test.

Astm d1646, caution must be exercised in interpreting viscosity values of rubber, f1646 in cases where molecular d166 is very high.

Stress relaxation is also a function of the test configuration and for these test methods the results are unique to the Mooney viscometer. Since rubber behaves as a non-Newtonian astm d1646, no simple relationship exists between the astm d1646 weight and the viscosity.

Related Drivers  BC560C DATASHEET PDF DOWNLOAD

These test methods include procedures for measuring the initial rate of rubber vulcanization.

Testing Standards List

Therefore, astm d1646 test method can be used to measure incipient cure scorch time and the rate of cure during very early stages of vulcanization. Viscosity astm d1646 stress relaxation behavior do not depend on such factors as molecular weight and non-rubber constituents in the same way.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The values given in parentheses are for information only. This test asfm cannot be used to study complete vulcanization because the continuous rotation of the disk will result in slippage when the 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.

Astm d1646 to Active This link will always route e1646 the current Active astm d1646 of the standard. This can result in different viscosity values for astm d1646 rubbers.

ASTM D1646

Stress relaxation is also a function of the aztm configuration and for these test methods the results are unique to the Mooney viscometer. Thus both of these tests are astm d1646 and complement each other.

Historical Version s – view previous versions of standard Translated Version s: The values given in parentheses are for information only.