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Fontaine, Pauline
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document
Physico-chemical properties of carbon fibers recycled by steam-thermolysis of PEEK matrix composites and composite wastes mixture
Abstract
Globaldemand for Carbon Fiber Reinforced Polymers (CFPR) has increased significantly inlast decade. Atthesame time, more and more composite waste is generated each year. Many methods of recycling composites tend to develop in order to recover carbon fiber. In this study, the pyrolysis and steam-thermolysis processes were usedto recycle mixture ofcompositesandPEEKheat-resistantmatrixcomposites respectively.Thethermalbehaviorofthesematerialswas preliminarily characterized by ATG / ATD. The recycled carbon fibers (rCF) from the mixture and PEEK were analyzed by SEM and single-filament test.Recycling efficiency was also estimated by the rate of resin degradation and the retention rate of mechanical properties. The conclusion of the first test on mixture is that pyrolysis does not allow to degrade the thermoresistant matrix. The test on PEEK, proved the effectiveness of the process of steam-thermolysis on this type of composites.