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Accelerated aging of elastomeric composites with vulcanized ground scraps
Article first published online: 27 JUL 2011
DOI: 10.1002/app.33666
Copyright © 2011 Wiley Periodicals, Inc.
Additional Information
How to Cite
Carli, L. N., Bianchi, O., Mauler, R. S. and Crespo, J. S. (2012), Accelerated aging of elastomeric composites with vulcanized ground scraps. J. Appl. Polym. Sci., 123: 280–285. doi: 10.1002/app.33666
Publication History
- Issue published online: 4 OCT 2011
- Article first published online: 27 JUL 2011
- Manuscript Accepted: 26 OCT 2010
- Manuscript Received: 19 FEB 2010
Funded by
- CAPES
- CNPq
- FAPERGS
- Abstract
- Article
- References
- Cited By
Keywords:
- rubber;
- recycling;
- accelerated aging;
- mechanical properties;
- FTIR
Abstract
The aim of this work is to study the effect of thermal aging on the mechanical, dynamic-mechanical, and chemical properties of SBR (styrene-butadiene rubber) composites filled with SBR industrial rubber scraps. Eight composites with varying proportions (10–80 phr) of the SBR ground scraps (SBR-r) were prepared and subjected to accelerated aging in an air-oven. The composites were evaluated, and the results were compared with a control sample (base formulation with 0 phr of SBR-r), before and after thermal aging. The accelerated aging led to a decrease in the mechanical properties as a result of an increase in the stiffness of the material, related to an increase in the crosslink density. However, these properties were not affected by the addition of rubber scraps up to 50 phr, either before or after aging. The increase in the glass transition temperature of the composites after aging, measured using dynamic mechanical analysis, confirmed the occurrence of a postcrosslinking process. Fourier transform infrared spectroscopy and crosslink density revealed that the aging mechanism was dependent on the SBR-r content. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011