Abstract
This research involves the recycling and remanufacturing process of recycled carbon fiber using thermally activated Cr2O3. In the recycling process, the activation energies were calculated using model-free methods and the recovery mechanism was established. The effects of temperature and time on the properties of recycled carbon fibers were investigated. In the remanufacturing process, two different methods were used to manufacture composites and analyze their mechanical properties. The results show that, to capture covalent bond electrons of the resin matrix, the powdered Cr2O3 was activated to generate holes and the resin matrix was decomposed. COOH was generated on the surface of recycled carbon fiber at different temperatures and times. Temperature and time are positively correlated with the tensile properties of recycled carbon fiber single-filament. With the increase of content of carbon fiber, the mechanical properties of composite materials were also improved. Compared with the virgin carbon fiber reinforced composites, the retention rate of tensile and flexural properties of recycled carbon fiber reinforced composites were 92.88–92.51%. The research results provide a foundation for establishing a closed-loop recovery process for thermally activated oxide semiconductors.
Published Version
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