Rapid removal of resin from a unidirectional carbon fiber reinforced plastic laminate by a high-voltage electrical treatment

Oshima, Kazumasa; Matsuda, Shinya; Hosaka, Masaki; Satokawa, Shigeo

doi:10.1016/j.seppur.2019.115885

Cited by 29 publications

(21 citation statements)

References 27 publications

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“…High-voltage fragmentation is a keyword classifiable in the “trendy” group, namely among topics that appear to be highly promising for academics dealing with this field of research. Indeed, it allows the recovery of clean and long fibres from CFRPs 22 without causing any significant environmental impact. Herein, there are also other specific keywords that currently still possess very few citations and accordingly a low number of occurrences, including additive manufacturing and wind turbine blade .…”

Section: Results Analysis and Discussionmentioning

confidence: 99%

“…20,21 Although these methods allow the recovery of clean and long fibre, it has been found that the removal of resin from CFRP waste leads to weight losses of the composite. 22…”

Section: Theoretical Backgroundmentioning

confidence: 99%

“…20,21 Although these methods allow the recovery of clean and long fibre, it has been found that the removal of resin from CFRP waste leads to weight losses of the composite. 22 Thermal recycling allows fibre recovery by breaking down the FRP composite materials' polymer matrix through thermal treatment. Pyrolysis and fluidised bed are the two main technologies belonging to this macro-category.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

See 2 more Smart Citations

Recycling technologies for fibre-reinforced plastic composite materials: A bibliometric analysis using a systematic approach

Colombo

Gaiardelli

Dotti

et al. 2022

Journal of Composite Materials

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Fibre-reinforced plastic composite materials are increasingly employed in several industries. This extensive use has resulted in a huge increase of generated waste that has to be managed without causing significant environmental issues. Recycling fibre-reinforced plastic composite materials in accordance with circular economy principles might be a way to overcome such problems. Thus, this paper aims to empirically analyse the existing scientific literature regarding recycling technologies for fibre-reinforced plastic composite materials. The main goal is to provide a holistic and comprehensive analysis of the topic, as well as research gaps and future directions following a rigorous and transparent approach. Overall, 201 articles were selected through a systematic approach and then analysed using a bibliometric analysis. Results show that this topic has been increasingly gaining momentum in recent years and that researchers have mostly carried out experimental studies on chemical and thermal recycling technologies for recovering carbon fibres. Lastly, this article provides an in-depth research agenda based on identified research gaps and an enhanced managerial grasp of this field of research.

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Section: Results Analysis and Discussionmentioning

confidence: 99%

“…20,21 Although these methods allow the recovery of clean and long fibre, it has been found that the removal of resin from CFRP waste leads to weight losses of the composite. 22…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Section: Theoretical Backgroundmentioning

confidence: 99%

See 1 more Smart Citation

Recycling technologies for fibre-reinforced plastic composite materials: A bibliometric analysis using a systematic approach

Colombo

Gaiardelli

Dotti

et al. 2022

Journal of Composite Materials

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show abstract

“…Moreover, HVF can be a promising alternative to mechanical recycling [45]. However, recently, Oshima et al [46] pointed out two drawbacks in this approach, using high voltage to remove resin from CFRP waste will result in a severe weight loss in the actual composite and also decreases the rate of resin removal.…”

Section: Alternative Approachesmentioning

confidence: 99%

A review on the recycling of waste carbon fibre/glass fibre-reinforced composites: fibre recovery, properties and life-cycle analysis

2020

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The growing use of carbon and glass fibres has increased awareness about their waste disposal methods. Tonnes of composite waste containing valuable carbon fibres and glass fibres have been cumulating every year from various applications. These composite wastes must be cost-effectively recycled without causing negative environmental impact. This review article presents an overview of the existing methods to recycle the cumulating composite wastes containing carbon fibre and glass fibre, with emphasis on fibre recovery and understanding their retained properties. Carbon and glass fibres are assessed via focused topics, each related to a specific treatment method: mechanical recycling; thermal recycling, including fluidised bed and pyrolysis; chemical recycling and solvolysis using critical conditions. Additionally, a brief analysis of their environmental and economic aspects are discussed, prioritising the methods based on sustainable values. Finally, research gaps are identified to highlight the factors of circular economy and its significant role in closing the life-cycle loop of these valuable fibres into re-manufactured composites.

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“…The most practical method for CFRP recycling is thermal decomposition, which allows for the recovery of CF by thermal decomposition of the resin at around 500 °C. ,− Because it is highly versatile and has a high throughput, thermal decomposition is relatively easy to demonstrate compared to other methods such as the super-/sub-critical fluid method − and chemical dissolution. − In addition to these chemical methods, CF recovery by an electrochemical method has been investigated for small-scale recycling processes in recent years, but it is difficult to achieve high throughput. − The problem with thermal decomposition is that the exhaust gas released from the resin contains harmful compounds. , The release of the exhaust gas increases environmental risks, but it is difficult for small-scale businesses that recycle automobiles to install additional removal systems. Therefore, it is difficult to extend CFRP recycling to small-scale facilities that lack purification equipment for the treatment of hazardous gases.…”

Section: Introductionmentioning

confidence: 99%

Selective Phenol Recovery by Catalytic Cracking of Thermal Decomposition Gas from Epoxy-Based Carbon-Fiber-Reinforced Plastic

Oshima

Fujii²,

Morita

et al. 2020

Ind. Eng. Chem. Res.

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To promote the recycling of carbon-fiber-reinforced plastic (CFRP), catalytic cracking of hazardous gases generated by thermal decomposition from epoxy-based CFRP composites was performed. We aimed for selective phenol recovery and hazardous gas removal using a zeolite catalyst. The BEA-type zeolite with Si/ Al = 92.5 showed high conversion and low naphthalene selectivity. Thermal decomposition at 500 °C produced bisphenol from the epoxy resin in the CFRP. Then, bisphenol was decomposed into phenol, cresol, and methylbenzofuran over the zeolite catalyst. However, naphthalene was formed under long contact time conditions. The temperature for catalytic cracking could be decreased to 350 °C, which was lower than that for the CFRP thermal decomposition (around 500 °C). Therefore, the process of selective phenol recovery and hazardous gas removal from CFRP thermal decomposition gas can be driven by the waste heat generated during CFRP thermal decomposition.

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Rapid removal of resin from a unidirectional carbon fiber reinforced plastic laminate by a high-voltage electrical treatment

Cited by 29 publications

References 27 publications

Recycling technologies for fibre-reinforced plastic composite materials: A bibliometric analysis using a systematic approach

Recycling technologies for fibre-reinforced plastic composite materials: A bibliometric analysis using a systematic approach

A review on the recycling of waste carbon fibre/glass fibre-reinforced composites: fibre recovery, properties and life-cycle analysis

Selective Phenol Recovery by Catalytic Cracking of Thermal Decomposition Gas from Epoxy-Based Carbon-Fiber-Reinforced Plastic

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