The composite materials market is living in these years a consistent development, in particular carbon composites demand sees an average annual growth of 11%. Though the low treated quantities, their market could be comparable to the glass composite one in brief time, thanks to the high added value of carbon fibers. The increasing use, and the high scrap percentage relative to the use of composites imply the necessity of a proper waste management. This condition is favoring the study and commercialization of recycling processes able to give competitive recycled composite products on the market. This thesis is aimed to explain the potentials offered by these innovative materials, highlighting the various recycling technologies actually present on the market, or in a lab phase. To explain which are the best methods employed to recycle glass and carbon fibers on base of their economic value. The experimental analysis will be aimed to evaluate the quality of recycled carbon fibers supplied by the Italian industry FCarbon. This factory boasts a new green depuration process which should be able to clean the fibers without any degeneration. The analysis will be conducted through SEM, identifying the accuracy of the cleaning process on the fiber surfaces and their constitution. Subsequently the analyzes will be aimed to analyze the mechanical properties of recycled carbon panel supplied by FCarbon, in order to explain the possible market potentials of these recycled products. Furthermore, the forensic analysis conducted on the panels will be aimed to suggest the development way to follow in order to increase their performances, identifying the presence of defects and their possible causes.
Il mercato dei materiali compositi sta vivendo in questi anni un consistente sviluppo, in particolare la domanda dei compositi in fibra di carbonio presenta una crescita annuale media del 11%. Nonostante le basse quantità trattate, il loro mercato potrebbe essere comparabile a quello dei compositi in fibra di vetro in breve tempo, grazie all’alto valore aggiunto delle fibre di carbonio. L’utilizzo in aumento, e l’alta percentuale di scarto relativa all’utilizzo dei materiali compositi implicano la necessità di un adeguato gestione di smaltimento. Tale condizione sta favorendo lo studio e la commercializzazione di processi di riciclaggio in grado di fornire compositi riciclati competitivi sul mercato. Questa tesi è finalizzata a spiegare i potenziali offerti da questi materiali innovativi, sottolineando le varie tecnologie di riciclo attualmente presenti sul mercato, o in fase di laboratorio. Spiegare quali sono i metodi impiegati nel riciclo delle fibre di vetro e carbonio, in base al loro valore economico. L’analisi sperimentale sarà mirata a valutare la qualità di fibre di carbonio riciclate, fornite dall’azienda italiana FCarbon. L’azienda vanta un esclusivo processo di depurazione ecosostenibile che sarebbe in grado di ripulire le fibre senza alcuna degradazione. L’analisi sarà condotta tramite SEM, identificando l’accuratezza del processo di pulizia sulla superficie delle fibre e la loro costituzione. Di seguito, verranno analizzate le proprietà meccaniche di pannelli in fibra di carbonio riciclata forniti dalla FCarbon, al fine di spiegare le potenzialità di mercato di questi prodotti riciclati. Inoltre, l’analisi forense condotta sui pannelli sarà mirata a suggerire una via di sviluppo da seguire al fine di incrementare le loro performance, identificando la presenza di difetti e le loro possibili cause.
Carbon fiber-epoxy composite laminates recycled with innovative process : mechanical and tomographic characterization
CORNAGGIA, PIERGIUSEPPE
2016/2017
Abstract
The composite materials market is living in these years a consistent development, in particular carbon composites demand sees an average annual growth of 11%. Though the low treated quantities, their market could be comparable to the glass composite one in brief time, thanks to the high added value of carbon fibers. The increasing use, and the high scrap percentage relative to the use of composites imply the necessity of a proper waste management. This condition is favoring the study and commercialization of recycling processes able to give competitive recycled composite products on the market. This thesis is aimed to explain the potentials offered by these innovative materials, highlighting the various recycling technologies actually present on the market, or in a lab phase. To explain which are the best methods employed to recycle glass and carbon fibers on base of their economic value. The experimental analysis will be aimed to evaluate the quality of recycled carbon fibers supplied by the Italian industry FCarbon. This factory boasts a new green depuration process which should be able to clean the fibers without any degeneration. The analysis will be conducted through SEM, identifying the accuracy of the cleaning process on the fiber surfaces and their constitution. Subsequently the analyzes will be aimed to analyze the mechanical properties of recycled carbon panel supplied by FCarbon, in order to explain the possible market potentials of these recycled products. Furthermore, the forensic analysis conducted on the panels will be aimed to suggest the development way to follow in order to increase their performances, identifying the presence of defects and their possible causes.| File | Dimensione | Formato | |
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CARBON FIBER-EPOXY COMPOSITE LAMINATES RECYCLED WITH INNOVATIVE PROCESS MECHANICAL AND TOMOGRAPHIC CHARACTERIZATION.pdf
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https://hdl.handle.net/10589/136192