Determination of the activation energy of silicone rubbers using different kinetic analysis methods

The solidification of silicone rubbers is a crosslinking reaction called vulcanization. It follows that the physical and mechanical properties of silicone rubbers increase significantly due to the growth of molecular weight and were affected strongly by the vulcanization process, such as the tempera...

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Bibliographic Details
Main Authors: Ou, Huibin, Sahli, Mohamed, Barriere, Thierry, Gelin, Jean-Claude
Format: Conference Proceeding
Language:English
Subjects:
Activation energy
Chemical composition
Crosslinking
Mechanical properties
Molecular chains
Organic chemistry
Reaction kinetics
Rheometry
Silicone rubber
Solidification
Vulcanization
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Summary:The solidification of silicone rubbers is a crosslinking reaction called vulcanization. It follows that the physical and mechanical properties of silicone rubbers increase significantly due to the growth of molecular weight and were affected strongly by the vulcanization process, such as the temperatures and times for curing. In this study, the kinetics of the crosslinking reaction of silicone rubbers was investigated by two current techniques: differential scanning calorimeter (DSC) and oscillating disk rheometry (ODR). From the kinetic experimental data, different kinetic analysis methods were used to determine the activation energy of silicone rubbers, such as the Kissinger, the Ozawa, the Friedman, the Flynn-Wall-Ozawa, the Kissinger-Akahira-Sunose and the integral methods. The results show the influence of the chemical composition of silicone rubbers, the current technique used and the applied kinetic analysis methods on the activation energy and the evolution of activation energy during the crosslinking reaction.
ISSN:2261-236X
2274-7214
2261-236X
DOI:10.1051/matecconf/20168016007