Microwave-Assisted Recycling Process to Recover Fiber from Fiberglass Polyester Composites

Moraes, Viviane Tavares de; Jermolovicius, Luiz Alberto; Tenório, Jorge Alberto Soares; Lebrão, Susana Marraccini Giampietri

doi:10.1590/1980-5373-mr-2019-0389

Cited by 5 publications

(4 citation statements)

References 41 publications

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“…The fibers are then contained in the air flow, and can be separated. The pyrolysis processes can involve microwave heating for polymer degradation [ 94 , 95 ]. Åkesson et al [ 94 ] studied microwave pyrolysis of wind turbine blades, and observed that glass fibers lost about 25% of their strength.…”

Section: Recycling Of Wind Turbine Bladementioning

confidence: 99%

Sustainable End-of-Life Management of Wind Turbine Blades: Overview of Current and Coming Solutions

Mishnaevsky

2021

Materials

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Various scenarios of end-of-life management of wind turbine blades are reviewed. “Reactive” strategies, designed to deal with already available, ageing turbines, installed in the 2000s, are discussed, among them, maintenance and repair, reuse, refurbishment and recycling. The main results and challenges of “pro-active strategies”, designed to ensure recyclability of new generations of wind turbines, are discussed. Among the main directions, the wind turbine blades with thermoplastic and recyclable thermoset composite matrices, as well as wood, bamboo and natural fiber-based composites were reviewed. It is argued that repair and reuse of wind turbine blades, and extension of the blade life has currently a number of advantages over other approaches. While new recyclable materials have been tested in laboratories, or in some cases on small or medium blades, there are remaining technological challenges for their utilization in large wind turbine blades.

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Section: Recycling Of Wind Turbine Bladementioning

confidence: 99%

Sustainable End-of-Life Management of Wind Turbine Blades: Overview of Current and Coming Solutions

Mishnaevsky

2021

Materials

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“…Several studies [46][47][48] report the application of the microwaves for heating the waste in order to decompose the matrix into gasses and oil. The results showed higher calorific values than the amount of energy used for the recycling process.…”

Section: Pyrolysismentioning

confidence: 99%

Current technologies for recycling fiber-reinforced composites

Jelić¹,

Kovačević²,

Stamenović³

et al. 2020

Sci Tech Rev

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High strength, high toughness, and low weight make fiber-reinforced composite materials important as an alternative to traditional materials. Due to their application in different fields, such as construction, aviation, marine, automotive technologies and biomedicine, their production has increased leading to the increasement of composite wastes. New technologies for managing fiber-reinforced composite wastes have been developed to solve the issue of end-of-life of these materials. The aim of this paper is to emphasize recycling technologies used for fiber reinforced composites, and their potential reusage.

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“…Compared with other heat treatment methods, microwave offers the benefits of using less energy to achieve fast heat transfer, contactless and selective heating for complex mixtures, and better energy efficiency [ 30 ]. The microwave-assisted pyrolysis (MAP) process can recycle fiber from fiber-reinforced polymer (FRP) [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Behaviors of Microwave-Assisted Pyrolysis Recycled Carbon Fiber-Reinforced Concrete with Early-Strength Cement

Syu

et al. 2023

Materials

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This study aimed to investigate the mechanical performance of early-strength carbon fiber-reinforced concrete (ECFRC) by incorporating original carbon fiber (OCF), recycled carbon fiber (RCF), and sizing-removed carbon fiber (SCF). Compressive, flexural, and splitting tensile strength were tested under three fiber-to-cement weight ratios (5‰, 10‰, and 15‰). The RCF was produced from waste bicycle parts made of carbon fiber-reinforced polymer (CFRP) through microwave-assisted pyrolysis (MAP). The sizing-removed fiber was obtained through a heat-treatment method applied to the OCF. The results of scanning electron microscopy (SEM) analysis with energy dispersive X-ray spectrometry (EDS) indicated the successful removal of sizing and impurities from the surface of the RCF and SCF. The mechanical test results showed that ECFRC with a 10‰ fiber-to-cement weight ratio of carbon fiber had the greatest improvement in its mechanical strengths. Moreover, the ECFRC with 10‰ RCF exhibited higher compressive, flexural, and splitting tensile strength than that of benchmark specimen by 14.2%, 56.5%, and 22.5%, respectively. The ECFRC specimens with a 10‰ fiber-to-cement weight ratio were used to analyze their impact resistance under various impact energies in the impact test. At 50 joules of impact energy, the impact number of the ECFRC with SCF was over 23 times that of the benchmark specimen (early-strength concrete without fiber) and was also greater than that of ECFRC with OCF and RCF.

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Microwave-Assisted Recycling Process to Recover Fiber from Fiberglass Polyester Composites

Cited by 5 publications

References 41 publications

Sustainable End-of-Life Management of Wind Turbine Blades: Overview of Current and Coming Solutions

Sustainable End-of-Life Management of Wind Turbine Blades: Overview of Current and Coming Solutions

Current technologies for recycling fiber-reinforced composites

Mechanical Behaviors of Microwave-Assisted Pyrolysis Recycled Carbon Fiber-Reinforced Concrete with Early-Strength Cement

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