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Effect of crosslinking density on biaxial relaxation of SBR by using reduced variablesThe use of reduced variables to account for the effect of crosslinking density in a styrene-butadiene rubber (SBR) system is demonstrated for general biaxial stress states. Recently published results from stress relaxation tests on five SBR vulcanizates crosslinked to different degrees by tetramethylthiuram disulfide were superposed by using the crosslinking density as a reduction variable. The equilibrium shear modulus calculated from the master relaxation curve at long reduced times was in satisfactory agreement with other results for SBR. The time-axis shifts were related in a linear logarithmic manner to the crosslinking density but had a slope slightly less than values previously reported for elastomer systems.
Document ID
19750042438
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Arenz, R. J.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena; Loyola University Los Angeles, Calif., United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1974
Publication Information
Publication: Journal of Polymer Science
Subject Category
Nonmetallic Materials
Accession Number
75A26510
Funding Number(s)
CONTRACT_GRANT: NAS7-100
Distribution Limits
Public
Copyright
Other

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