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Cited by 18Fiber-reinforced polymer compositesPolymer crystallization and propertiesNatural Fiber Reinforced Composites

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Characterization of Hybrid FRP Composite Produced from Recycled PET and CFRP

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Almahri, Ghdayra, Madi, Kaouthar, Alkaabi, Fatima, Badran, Yahia, Shehadeh, Khaled, ElHassan, Amged, Ahmed, Waleed, Alzahmi, Salem·2023·Polymers
DOI 10.3390/polym15132946PMC PMC10346695
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Abstract

In recent years, carbon fiber has experienced a significant surge in popularity attributed to its exceptional properties, including its high-temperature resistance, mechanical strength, and cost-effectiveness. Many industries have been attracted to the prevalent use of carbon-fiber-reinforced polymers or plastics (CFRP). However, the increasing demand for carbon fiber has created a waste recycling problem that needs to be addressed. This research aimed to develop a recycled composite using PET waste as a solution to the growing demand for both materials. The recycled carbon fibers were processed chemically and mechanically to generate power for this process. Various samples were tested with different proportions of CF (10%, 20%, 30%, and 40%) to analyze their mechanical properties. The recycled composites are examined under tensile test conditions to further explore the waste carbon reinforcement’s effect on polymers’ characteristics. Scanning electron microscopy was also utilized for mechanical morphology evaluations. After analyzing the data, it was found that samples containing 20% CF had the highest elastic modulus value among all the mixes. This is attributed to the reinforcing effect of the fibers. The Elasticity Modulus of the filaments increased with the concentration of CF, reaching its peak at 20% before decreasing. This trend is also apparent in the visual representations. When compared to recycling, the Elasticity Modulus value of 20% CF filament increased by 97.5%. The precise value for CF with a 20% filament is 4719.3 MPa. Moreover, the composite samples were analyzed using SEM to characterize them, and it was discovered that the incorporation of 20% CF/PET filler produced the composition with the highest strength.

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Figure 1 Schematic Diagram of pyrolysis process; (a) sample before pyrolysis machine (b) Pyrolysis machine (c) Sample after pyrolysis process.
Figure 1 Schematic Diagram of pyrolysis process; (a) sample before pyrolysis machine (b) Pyrolysis machine (c) Sample after pyrolysis process.CC BY · PubMed Central
Figure 2 (a) Grinder mill machine and (b) Planetary Ball Mill PM 100.
Figure 2 (a) Grinder mill machine and (b) Planetary Ball Mill PM 100.CC BY · PubMed Central
Figure 3 Material samples of (a) CF, (b) PET, (c) twin-screw extruder, and (d) prepared sample.
Figure 3 Material samples of (a) CF, (b) PET, (c) twin-screw extruder, and (d) prepared sample.CC BY · PubMed Central
Figure 4 Sample Preparation (a) Bonding phase of the sample to make shoulders, (b) Finalized five tensile test samples.
Figure 4 Sample Preparation (a) Bonding phase of the sample to make shoulders, (b) Finalized five tensile test samples.CC BY · PubMed Central
Figure 5 Tensile testing machine with a material sample.
Figure 5 Tensile testing machine with a material sample.CC BY · PubMed Central
Figure 6 Stress-Strain curve for three samples of 10% PET composition.
Figure 6 Stress-Strain curve for three samples of 10% PET composition.CC BY · PubMed Central
Figure 7 Graphical representations of different mechanical properties (a–e) at different CF content (%).
Figure 7 Graphical representations of different mechanical properties (a–e) at different CF content (%).CC BY · PubMed Central

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Metadata

Authors
Almahri, G., Madi, K., Alkaabi, F., Badran, Y., Shehadeh, K., ElHassan, A., Ahmed, W., & Alzahmi, S.
Affiliations
United Arab Emirates University (AE)
Corresponding author
Alzahmi, Salem
ORCID
Venue
Polymers
Publisher
MDPI AG
Published
2023-07-04
Volume
15
Issue
13
Pages
2946
ISSN
2073-4360 (ISSN-L)
DOI
10.3390/polym15132946
PMC
PMC10346695
OpenAlex
W4383226927
Cited by
18
References
0
Citations by year
2026: 5 · 2025: 10 · 2024: 1 · 2023: 2
FWCI
1.77
Type
journal article
Language
en
Open access
Licence
Locations
  • Polymers (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
UAE University (31R333)
Topics
  • Physical Sciences › Engineering › Mechanical Engineering › Fiber-reinforced polymer composites
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
  • Physical Sciences › Materials Science › Polymers and Plastics › Natural Fiber Reinforced Composites
Keywords
recycled carbon fiber, carbon fiber reinforced polymer, PET waste, recycled PET, carbon fiber recycling, mechanical properties, tensile properties, elastic modulus, fiber content, composite morphology

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