TGA application for optimising the accelerated aging conditions and predictions of thermal aging of rubber

Changes in the residual compression set, tensile strength and elongation at break, as well as the oxygen absorption and mass change, are evaluated during the thermal oxidation of butadiene-nitrile-based carbon black-filled rubber. Activation energies for the processes are determined. Using TGA, the...

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Bibliographic Details
Published in:Polymer testing 2013-04, Vol.32 (2), p.197-201
Main Authors: Bystritskaya, Elena V., Monakhova, Tatyana V., Ivanov, Victor B.
Format: Article
Language:English
Subjects:
Activation energy
Breaking
Carbon
Compressing
Elongation
Nitrile rubber
Rubber
Tensile strength
Thermal degradation
Thermogravimetric analysis
Thermooxidation
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Summary:Changes in the residual compression set, tensile strength and elongation at break, as well as the oxygen absorption and mass change, are evaluated during the thermal oxidation of butadiene-nitrile-based carbon black-filled rubber. Activation energies for the processes are determined. Using TGA, the activation energy of the first thermal degradation stage (87-88 kJ/mol) corresponded to the increase in compression set. The activation energy of the second stage (116-117 kJ/mol) corresponded to the decrease in the elongation at break and oxygen absorption. These correlations confirm that TGA can be used to predict the thermal stability of rubber.
ISSN:0142-9418
1873-2348
DOI:10.1016/j.polymertesting.2012.10.013