Plastics partners sought. Cost Effective Carbon Fibers Recovery Technology
Description of the project offered Exponential growth of carbon fibre reinforced plastics (CFRP) consumption and new EU Waste Framework Directive push the problem of CFRP recycling to the forefront. Today 3 appropriate competitive technologies for carbon fibres recovery during CFRP recycling are available at EU market at the different TRL: • low-temperature pyrolysis (Recycled Carbon Fibre Ltd.) • wet-chemical treatment (Adherent Technologies Inc.) • solvolysis in supercritical fluids (AFRECAR and EURECOMP projects) Currently all these processes use grinded CFRP waste to generate short carbon fibres for further usage in non-critical low-loaded structures. Mentioned processes specific disadvantages are recovered fibres characteristics degradation + non-uniformity, low productivity, toxic chemical agents application, and equipment complexity. Project basic idea is application of high-temperature pyrolysis in the salt melts as an alternative approach for carbon fibres recovery. Project goal is to save maximum possible fibre length and reach ≈100% recovered fibres performances to ensure their reuse in secondary (medium loaded) aeronautic/automotive structures. National Aerospace University "KhAI" preliminary research results have demonstrated potential benefits of prospective carbon fibres recovery technology based on the high-temperature pyrolysis in the salt melts: • high process productivity ( 99% fibre cleaning after 20-60 second treatment) • minimal fibre characteristics degradation; • process flexibility (short/continuous fibres, large fabric pieces recovery) • applicability for out-of-life prepreg rolls direct recovery • energy efficiency As a result of CEFIR project high-competitive technology can be created for growing market.