Efficient recycling of carbon fiber from carbon fiber reinforced composite and reuse as high performance electromagnetic shielding materials with superior mechanical strength

Deng, Zongyi; Fan, Jiamin; Zhang, Huang; Yang, Xueyuan

doi:10.1016/j.polymertesting.2023.108110

Cited by 8 publications

(4 citation statements)

References 39 publications

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“…37,67 Consequently, current research interests are pivoting towards developing dynamic covalent polymer materials with self-healing and processable properties, wherein the raw materials are cost-effective, the regeneration processes are simplified, and no additional catalysts are necessitated. 54,72,73…”

Section: Emerging Efficient Strategies For Carbon Fiber Recoverymentioning

confidence: 99%

Recycling and repurposing of waste carbon nanofiber polymers: a critical review

Liu,

Chen,

Wang

et al. 2024

Environ. Sci.: Nano

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Section: Emerging Efficient Strategies For Carbon Fiber Recoverymentioning

confidence: 99%

Recycling and repurposing of waste carbon nanofiber polymers: a critical review

Liu,

Chen,

Wang

et al. 2024

Environ. Sci.: Nano

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“…The results are depicted in Figure 2. Figure 2a,b illustrate the micromorphologies of virgin carbon fiber, while Figure 2c,d represent the micromorphologies of the recovered carbon fiber [18]. The microstructure difference between the carbon filaments before and after recovery is minimal.…”

Section: Properties Of Recovered Carbon Fibermentioning

confidence: 99%

“…The absorption peak at 1719 cm −1 corresponds to the stretching vibration of the carbonyl group (C=O), implying the presence of unsaturated organic compounds or ketones in the material. Furthermore, the peak at 1233 cm −1 represents C=O stretching vibration, suggesting the presence of ester or carboxyl functional groups within the material [18]. These infrared absorption peaks provide crucial insights into the chemical composition and structure of carbon fibers prior to recovery, facilitating in the comprehension of the material's properties and potential reactivity.…”

Section: Properties Of Recovered Carbon Fibermentioning

confidence: 99%

Research on Microwave Pyrolysis Recovery and Reuse Performance of Carbon Fiber Composites

Li,

Xu,

Ren

et al. 2024

Polymers

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Carbon fiber-reinforced resin matrix composites find extensive applications across various industries. However, their widespread use also generates significant waste, leading to resource depletion and environmental concerns. Studying the production of composite materials using recovered carbon fiber is imperative to mitigate the environmental impact associated with waste from carbon fiber-reinforced resin matrix composites and optimize resource utilization. In this study, carbon fiber was reclaimed using the microwave pyrolysis–oxidation process. The reclaimed carbon fiber underwent a cutting process to produce shorter carbon fibers tailored to specific requirements, which were then used to fabricate composite plates reinforced with epoxy resin. The mechanical characteristics of the composite were analyzed, along with SEM, XPS, infrared, Raman, and contact angle analyses conducted on the recovered carbon fiber. The test findings suggested minimal variation in the surface morphology of the recovered carbon fiber materials. Post-recovery, an increase in the quantity of oxygen-containing functional groups was observed on the carbon fiber surface. Additionally, the contact angle between the carbon fiber surface and the epoxy adhesive decreased. The mechanical properties of the composite produced from the recovered carbon fiber decreased, including the impact strength, tensile strength, and bending strength, with the impact strength dropping by 24.14%, tensile strength by 15.94%, and bending strength by 8.24%, while maintaining overall reusability, thus paving the way for the comprehensive utilization of carbon fiber resources.

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“…12 An alternative to disposing of this waste is recycling processes, which can include mechanical, 13,14 thermal, 15 and chemical processes. 16,17 However, many of these methods present significant complexities and high costs, making using raw materials from the recycling process unfeasible compared to other neat raw materials. 18,19 Therefore, the present work aimed to recycle CF/PAEK composite waste and protective films mechanically.…”

Section: Introductionmentioning

confidence: 99%

Mechanical recycling process: An alternative for a viable disposal of carbon fiber‐reinforced thermoplastic waste

de Oliveira,

Montagna,

dos Anjos

et al. 2024

Polymer Engineering & Sci

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Concern for the environment has increased the interest of the automotive and aerospace industries in evaluating the feasibility of mechanical recycling of waste carbon‐fiber‐reinforced polymer composites (CFRP) and waste from protective films used during the transport and storage of thermosetting composites, which are removed and discarded during manufacturing. Therefore, this work aimed to develop a recyclable composite from protective film waste by incorporating carbon fiber/poly(aryl ether ketone) (CF/PAEK) composite particles obtained through grinding in knife mills, followed by an analysis of the particle size distribution. Protective film residues (PEres) were cut to facilitate processing. A mixture of low‐density polyethylene and PEres (50/50) was used as the composite matrix, and 5, 10, 15, and 20 wt% CF/PAEK composite particles were added as the reinforcing agents. Then, these recycled composites were prepared by melt mixing using a twin‐screw extruder and injection molding to obtain standardized samples. Mechanical, thermal, electrical, and electromagnetic properties were evaluated. It was possible to observe that the increase in the addition of CF/PAEK composite particles contributed to a 290% increase in elastic modulus values and a 9.1% increase in Shore D hardness, electrical conductivity, and attenuation of the electromagnetic wave. Furthermore, satisfactory adhesion between filler and matrix contributed to a good interface and reinforcement of the final material.Highlights Mechanical recycling by extrusion of waste from the automotive and aerospace sectors Grinding of carbon fiber/poly(aryl ether ketone) composite waste to be used as filler Protective film waste used as matrix Composites developed with waste with good electrical and electromagnetic properties The addition of thermoplastic composite residues does not affect thermal and mechanical properties

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Efficient recycling of carbon fiber from carbon fiber reinforced composite and reuse as high performance electromagnetic shielding materials with superior mechanical strength

Cited by 8 publications

References 39 publications

Recycling and repurposing of waste carbon nanofiber polymers: a critical review

Recycling and repurposing of waste carbon nanofiber polymers: a critical review

Research on Microwave Pyrolysis Recovery and Reuse Performance of Carbon Fiber Composites

Mechanical recycling process: An alternative for a viable disposal of carbon fiber‐reinforced thermoplastic waste

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