Volume 140, Issue 21 e53871
RESEARCH ARTICLE

Investigation of recycling effects on the mechanical properties of short carbon and glass fiber reinforced polyetherimide composites

Jin-Ming Hu

Jin-Ming Hu

College of Aerospace Engineering, Chongqing University, Chongqing, 400044 China

Contribution: Data curation (lead), ​Investigation (lead), Validation (lead), Writing - original draft (lead), Writing - review & editing (equal)

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Zhi-Mao Zhou

Zhi-Mao Zhou

CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190 China

Contribution: Funding acquisition (equal), Methodology (equal), Resources (equal)

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Fang-Liang Guo

Corresponding Author

Fang-Liang Guo

College of Aerospace Engineering, Chongqing University, Chongqing, 400044 China

Correspondence

Fang-Liang Guo, Yuan-Qing Li, and Shao-Yun Fu, College of Aerospace Engineering, Chongqing University, Chongqing 400044, China.

Email: [email protected], [email protected], [email protected]

Contribution: Funding acquisition (lead), ​Investigation (equal), Methodology (lead), Writing - review & editing (lead)

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Zheng Sun

Zheng Sun

College of Aerospace Engineering, Chongqing University, Chongqing, 400044 China

Contribution: ​Investigation (equal)

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Li Zhang

Li Zhang

School of Chemistry, Beihang University, Beijing, 100191 China

Contribution: Writing - review & editing (equal)

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Zi-Ming Wang

Zi-Ming Wang

College of Aerospace Engineering, Chongqing University, Chongqing, 400044 China

Contribution: ​Investigation (equal)

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Peng-Gang Yin

Peng-Gang Yin

School of Chemistry, Beihang University, Beijing, 100191 China

Contribution: Writing - review & editing (equal)

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Yuan-Qing Li

Corresponding Author

Yuan-Qing Li

College of Aerospace Engineering, Chongqing University, Chongqing, 400044 China

State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing, 400044 China

Correspondence

Fang-Liang Guo, Yuan-Qing Li, and Shao-Yun Fu, College of Aerospace Engineering, Chongqing University, Chongqing 400044, China.

Email: [email protected], [email protected], [email protected]

Contribution: Conceptualization (equal), Methodology (equal), Supervision (lead), Writing - review & editing (lead)

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Shao-Yun Fu

Corresponding Author

Shao-Yun Fu

College of Aerospace Engineering, Chongqing University, Chongqing, 400044 China

State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing, 400044 China

Correspondence

Fang-Liang Guo, Yuan-Qing Li, and Shao-Yun Fu, College of Aerospace Engineering, Chongqing University, Chongqing 400044, China.

Email: [email protected], [email protected], [email protected]

Contribution: Resources (lead), Writing - review & editing (lead)

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First published: 14 March 2023
Citations: 1

Abstract

Considering the increasing composite waste accumulation, this work explores the feasibility of replacing virginal carbon fibers (VCFs) and virginal glass fibers (VGFs) with recycled fibers for injection molded polyetherimide (PEI) composites. Extensive characterizations were conducted to reveal effects of sulfuric acid recycling process on mechanical properties of fibers and their composites. It was shown that strength retention rates of recycled carbon fibers (RCFs) and recycled glass fibers (RGFs) were 81.6% and 55.7%. The reinforcing factor of RCFs increased from 0.120 of VCFs to 0.147 due to the enhanced interfacial bonding while the reinforcing factor of RGFs decreased from 0.080 of VGFs to 0.065 owing to the glass fiber strength reduction. As a result, the composite tensile strength (152.8 MPa) of RCF/PEI was comparable to that (155.3 MPa) of VCF/ PEI and RGF/PEI tensile strength (102.5 MPa) was lower than that (112.3 MPa) of VGF/PEI. Moreover, the tensile modulus of RCF/PEI and RGF/PEI were also approximatively comparable to those of VCF/PEI and VGF/PEI since recycling process showed a slight effect on fiber modulus. Although there exists an impact of recycling on fiber mechanical properties, the introduction of recycled fibers (especially RCFs) by injection molding process can promisingly enhance PEI composites.

CONFLICT OF INTEREST STATEMENT

The authors declare no conflict of interest.

DATA AVAILABILITY STATEMENT

Research data are not shared.

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