Abstract
Limited information is available concerning the degradation of conveyor belts due to environmental effects during storage and operation as well as the repair method used. This research was carried out to investigate the water ingression behavior in a composite polyester (PET)/polyamide (PA) textile reinforced conveyor belt covered with rubber substrates. Gravimetric and hygroscopic experiments were carried out to evaluate the moisture diffusion coefficients and gravimetric experiments were carried out separately for the covering rubber, textile carcass and belt specimens. The analytical simple Fickian, Sequential dual Fickian and Diffusion-relaxation models were implemented and compared, in order to better describe the experimental results and evaluate the diffusion coefficients. The swelling coefficients were characterized accordingly to standards. The textile carcass is the part most sensitive to moisture effects. This research gives new insights into the estimation of the long term performance and life-time prediction of textile conveyor belts with rubber covering.
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