Mechanical Recycling of Short Carbon Fibers and Grind Carbon Fibers Reinforced PA66

1. Rebeka Lorber, FTPO, Slovenia
2. Miroslav Huskić, FTPO, Slovenia

Fibre-reinforced polymer composites are occupying a fair share of structural and lightweight applications, replacing traditional materials whenever possible. Along with many advantages they offer, such as excellent mechanical properties to weight ratio, low price, fast production, the possibility of tailoring the properties for specific applications, etc., on the other hand, at the end of their lifetime they are usually disposed on landfills. Carbon fibre polymer composites (CFRPs) are relatively expensive materials and should be considered for recycling and reuse. Therefore, the influence of multiple cycles of mechanical recycling through grinding and injection moulding was studied. PA66, PA66 reinforced with CF and ground CF were mechanically recycled five times. Mechanical and thermal properties were determined after the first injection, as well as after the 1st, 3rd and 5th cycles of mechanical recycling. The values of mechanical properties (modulus, strength, ..) generally deteriorate, while the thermal properties remain almost unchanged. Part of the change is due to polymer degradation and part is due to fibre shortening.

Ključne reči: mechanical recycling; carbon fibres; PA66; carbon fibre composites; injection moulding

Tematska oblast: SIMPOZIJUM A - Nauka materije, kondenzovane materije i fizika čvrstog stanja

Datum: 30.07.2021.

Contemporary Materials 2021 - Savremeni Materijali

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