Investigation of Interfacial and Mechanical Properties of Various Thermally-Recycled Carbon Fibers/Recycled PET Composites

Baek, Yeong-Min; Shin, Pyeong-Su; Kim, Jong-Hyun; Park, Ha-Seung; Kwon, Dong-Jun; DeVries, K. Lawrence; Park, Joung-Man

doi:10.1007/s12221-018-8305-x

Cited by 22 publications

(7 citation statements)

References 30 publications

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“…In addition, samples using recycled carbon fiber fabrics located at the same part (but obtained at different oxidation conditions) showed that, in this case, shorter oxidation times (O2) resulted in smaller values for ILSS: rCFRP1-down (41.4 MPa) vs rCFRP2-down (30.3 MPa), and rCFRP1-up (14.1 MPa) vs rCFRP2-up (14.0 MPa). Nonetheless, the interface between carbon fibers and resin matrix has a major impact on the ILSS, and in this case, the best result barely exceeds 50% of the ILSS value of the original fiber, which is far from some values found in the literature [ 44 ]. In view of the results, it seems critical in this case that the carbon fibers were perfectly clean in order to obtain a good ILSS value.…”

Section: Resultsmentioning

confidence: 80%

Secondary Raw Materials from Residual Carbon Fiber-Reinforced Composites by An Upgraded Pyrolysis Process

López-Urionabarrenechea

Gastelu

Jiménez‐Suárez

et al. 2021

Polymers

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This paper presents a process where carbon fibers and hydrogen can be recovered simultaneously through a two-stage thermal treatment of an epoxy-carbon fiber composite. For this purpose, some pieces of epoxy resin reinforced with carbon fiber fabrics have been fabricated and, after curing, have been pyrolyzed in an installation consisting of two reactors. In the first one, the thermal decomposition of the resin takes place, and in the second one, the gases and vapors coming from the first reactor are thermally treated. Once this process is completed, the solid generated is oxidized with air to eliminate the resin residues and carbonaceous products from the fibers surface. The recovered carbon fiber fabrics have been reused to make new cured parts and their electrical and mechanical properties have been measured. The results show that it is possible to obtain carbon fiber fabrics that can be processed as they leave the recycling process and that retain 80% of the tensile modulus, 70% of the flexural strength, and 50% of the interlaminar shear strength. At the same time, a gaseous stream with more than 66% by volume of hydrogen can be obtained, reaching a maximum of 81.7%.

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Section: Resultsmentioning

confidence: 80%

Secondary Raw Materials from Residual Carbon Fiber-Reinforced Composites by An Upgraded Pyrolysis Process

López-Urionabarrenechea

Gastelu

Jiménez‐Suárez

et al. 2021

Polymers

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“…Thomason [10] and Vaidya [11] illustrated the importance of fiber aspect ratio of discontinuous fibers. Polyamide (PA), polyethylene (PE) and polyethylene terephthalate (PE) are of continued interest as thermoplastic matrices in reinforced composites due to their recyclability and superior mechanical properties [12][13][14].…”

Section: Literature Reviewmentioning

confidence: 99%

Mechanical Response and Processability of Wet-Laid Recycled Carbon Fiber PE, PA66 and PET Thermoplastic Composites

et al. 2022

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The interest in recycled carbon fiber (rCF) is growing rapidly and the supply chain for these materials is gradually being established. However, the processing routes, material intermediates and properties of rCF composites are less understood for designers to adopt them into practice. This paper provides a practical pathway for rCFs in conjunction with low cost and, for the most part, commodity thermoplastic resins, namely polyethylene (PE), polyamide 66 (PA66) and polyethylene terephthalate (PET). Industrially relevant wet-laid (WL) process routes have been adopted to produce mats using two variants of WL mats, namely (a) high speed wet-laid inclined wire to produce broad good ‘roll’ forms and (b) 3DEPTM process patented by Materials Innovation Technologies (MIT)-recycled carbon fiber (RCF), now Carbon Conversions, which involves mixing fibers and water and depositing the fibers on a water-immersed mold. These are referred to as ‘sheet’ forms. The produced mats were evaluated for their processing into composites as ‘fully consolidated mats’ and ‘non-consolidated’ as-produced mats. Comprehensive mechanical data in terms of tensile strength, tensile modulus and impact toughness for rCF C/PE, C/PA66 and C/PET are presented. The work is of high value to sustainable composite designers and modelers.

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“…In the late 2010s, Baek et al [71] at Gyeonsang National University produced recycled carbon fiber/PET composites using a film-stacking compression molding process. They recycled the fibers using pyrolysis at several temperatures to determine the impact on properties such as the interfacial shear strength (IFSS) and the interlaminar shear strength (ILSS).…”

Section: Air-laidmentioning

confidence: 99%

A Review of Recent Developments in Composites Made of Recycled Carbon Fiber Textiles

Barnett

Ghossein

2021

Textiles

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Carbon fiber recycling has garnered significant attention in recent years due to the large volume of manufacturing waste and upcoming end-of-life products that will enter the waste stream as the current generation of aircraft is retired from service. Recycled carbon fibers have been shown to retain most of their virgin mechanical properties, but their length is generally reduced such that continuous fiber laminates cannot be remade. As such, these fibers are typically used in low-performance applications including injection molding, extrusion/compression molding, and 3D printing that further degrade the fiber length and resulting composite properties. However, recent advances in the processing of long discontinuous fiber textiles have led to medium- to high-performance composites using recycled carbon fibers. This review paper describes the recent advances in recycled carbon fiber textile processing that have made these improvements possible. The techniques used to manufacture high-value polymer composites reinforced with discontinuous recycled carbon fiber are described. The resulting mechanical and multifunctional properties are also discussed to illustrate the advantages of these new textile-based recycled fiber composites over the prior art.

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Investigation of Interfacial and Mechanical Properties of Various Thermally-Recycled Carbon Fibers/Recycled PET Composites

Cited by 22 publications

References 30 publications

Secondary Raw Materials from Residual Carbon Fiber-Reinforced Composites by An Upgraded Pyrolysis Process

Secondary Raw Materials from Residual Carbon Fiber-Reinforced Composites by An Upgraded Pyrolysis Process

Mechanical Response and Processability of Wet-Laid Recycled Carbon Fiber PE, PA66 and PET Thermoplastic Composites

A Review of Recent Developments in Composites Made of Recycled Carbon Fiber Textiles

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