Matthew Corby
Reversibility of the Mullins effect for extending the life of rubber components
Corby, Matthew; De Focatiis, Davide S. A.
Abstract
This paper investigates the recovery of the Mullins effect by heat-treatment of predeformed (300% tensile strain) carbon-black filled ethylene-propylene-diene rubber (EPDM) in an air-circulating oven. The tensile response was measured, and the secant modulus at 100% strain, energy to deform to 300% strain, ultimate tensile strength, strain to failure and permanent deformation were compared to undeformed specimens subjected to the same heat-treatments, 3–24 h at temperatures of 60–80°C. Recovery of properties is dependent on time and temperature of treatment, increasing with longer times and higher temperatures. Recovery of secant modulus follows time-temperature superposition (TTS) with an activation enthalpy of 111 kJ mol−1; TTS is shown to be applicable to the other measures, probably because of additional cure in the rubber resulting from the heat-treatment. Treatments under vacuum led to similar effects as in an air-circulating oven.
Citation
Corby, M., & De Focatiis, D. S. A. (2019). Reversibility of the Mullins effect for extending the life of rubber components. Plastics, Rubber and Composites, 48(1), 24-31. https://doi.org/10.1080/14658011.2018.1443384
Journal Article Type | Article |
---|---|
Acceptance Date | Feb 16, 2018 |
Online Publication Date | Mar 7, 2018 |
Publication Date | Jan 2, 2019 |
Deposit Date | Dec 19, 2018 |
Journal | Plastics, Rubber and Composites |
Print ISSN | 1465-8011 |
Electronic ISSN | 1743-2898 |
Publisher | Maney Publishing |
Peer Reviewed | Peer Reviewed |
Volume | 48 |
Issue | 1 |
Pages | 24-31 |
DOI | https://doi.org/10.1080/14658011.2018.1443384 |
Keywords | Materials Chemistry; General Chemical Engineering; Polymers and Plastics; Ceramics and Composites |
Public URL | https://nottingham-repository.worktribe.com/output/1429144 |
Publisher URL | https://www.tandfonline.com/doi/full/10.1080/14658011.2018.1443384 |
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