Numerical Model for the Prediction of Final Mechanical Properties of EPDM Vulcanized with Peroxides - Part I: Basis of the Numerical Model and Experimental Campaign

Gabriele Milani, Federico Milani

Abstract

In the paper, a simple but effective mathematical model having kinetic base, to predict the vulcanization degree of rubber vulcanized with peroxides, is presented. The approach takes contemporarily into consideration, albeit within a simplified scheme, the actual reactions occurring during peroxidic curing, namely initiation, H-abstraction, combination and addition, and supersedes the simplified approach used in practice, which assumes for peroxidic curing a single first order reaction. After a suitable re-arrangement of the first order system of differential equations obtained from the actual kinetic system adopted, a single second order non-linear differential equation is obtained and numerically solved by means of a Runge-Kutta approach. Kinetic parameters to set are evaluated by means of a standard least squares procedure where target data are represented by experimental values available, i.e. normalized rheometer curves. In order to assess numerical results, a wide experimental campaign is conducted, varying curing agents, vulcanization temperatures and concentration of the peroxides. Both rheometer curves to compare with those provided by the numerical model and stretch-strain curves of the vulcanized samples are obtained, to have a precise insight into the most suitable parameters to use during curing.

References

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Paper Citation


in Harvard Style

Milani G. and Milani F. (2013). Numerical Model for the Prediction of Final Mechanical Properties of EPDM Vulcanized with Peroxides - Part I: Basis of the Numerical Model and Experimental Campaign . In Proceedings of the 3rd International Conference on Simulation and Modeling Methodologies, Technologies and Applications - Volume 1: SIMULTECH, ISBN 978-989-8565-69-3, pages 58-65. DOI: 10.5220/0004423700580065


in Bibtex Style

@conference{simultech13,
author={Gabriele Milani and Federico Milani},
title={Numerical Model for the Prediction of Final Mechanical Properties of EPDM Vulcanized with Peroxides - Part I: Basis of the Numerical Model and Experimental Campaign},
booktitle={Proceedings of the 3rd International Conference on Simulation and Modeling Methodologies, Technologies and Applications - Volume 1: SIMULTECH,},
year={2013},
pages={58-65},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004423700580065},
isbn={978-989-8565-69-3},
}


in EndNote Style

TY - CONF
JO - Proceedings of the 3rd International Conference on Simulation and Modeling Methodologies, Technologies and Applications - Volume 1: SIMULTECH,
TI - Numerical Model for the Prediction of Final Mechanical Properties of EPDM Vulcanized with Peroxides - Part I: Basis of the Numerical Model and Experimental Campaign
SN - 978-989-8565-69-3
AU - Milani G.
AU - Milani F.
PY - 2013
SP - 58
EP - 65
DO - 10.5220/0004423700580065