A new modelling approach for predicting process evolution of cork-rubber composites slabs vulcanization

Area of Science:

• Materials Science
• Chemical Engineering
• Polymer Science

Background:

• Vulcanization of cork-rubber composites is complex, involving heat transfer and chemical kinetics.
• Material degradation during processing necessitates advanced modeling approaches.

Purpose of the Study:

• To develop and validate a numerical model for predicting the vulcanization process of cork-rubber slabs.
• To incorporate a reversion model to account for material degradation.
• To determine optimal processing parameters for enhanced product quality.

Main Methods:

• A one-dimensional numerical model combining heat transfer by conduction and kinetic models was employed.
• Cure and reversion parameters were determined using rheometer data.
• Experimental data were used to determine thermal properties, considering variations with cure and temperature.

Main Results:

• Simulations showed good agreement with experimental results, even with constant thermal properties.
• The model successfully predicted temperature and degree of cure evolution.
• The inclusion of a reversion model addressed material degradation concerns.

Conclusions:

• The proposed numerical methodology is a valuable tool for optimizing vulcanization parameters in cork-rubber composites.
• It aids in achieving desired product homogeneity and characteristics without compromising quality.
• This approach supports efficient development and production stages for these materials.