Recycling of Wastes Deriving from the Production of Epoxy-Carbon Fiber Composites in the Production of Polymer Composites
Source abstract
Abstract
The formulation of composites reinforced with shredded epoxy-carbon fibers wastes is investigated. Poly (buthylene terephthalate) PBT was selected as the matrix for the composites. In order to increase the interaction between the epoxy resin still coating the carbon fibers and the PBT matrix, polycarbonate (PC) was added either to the matrix formulation or as a waste coating. The flexural strength, impact strength, and dynamic-mechanical analysis of the new composites was investigated, as well as their microstructure by scanning electron microscopy. Experimental results show that the recycled fibers can be dispersed in both pure PBT and in its blend, enhancing the mechanical properties of the composites. An increase in the investigated properties is found specifically in the elastic modulus below 50 °C and in the impact strength. The extent of the increase depends on the obtained microstructure.
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Research context
OpenAlex topics: Fiber-reinforced polymer composites · Mechanical Behavior of Composites · Polymer crystallization and properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Civil, Chemical, Environmental and Material Engineering, University of Bologna, Via Terracini 28, 40131 Bologna, Italy
References (34)
Show source-provided references
1. Recycling carbon fibre reinforced polymers for structural applications: Technology review and market outlook10.1016/j.wasman.2010.09.019 ↗
2. Carbon fibre reinforced composite waste: An environmental assessment of recycling, energy recovery and landfilling10.1016/j.compositesa.2013.02.009 ↗
3. Scaffaro, R., Di Bartolo, A., and Dintcheva, N. (2021). Matrix and filler recycling of carbon and glass fiber-reinforced polymer composites: A review. Polymers, 13.10.3390/polym13213817 ↗
4. Energy intensity and environmental analysis of mechanical recycling of carbon fibre composite10.1016/j.jclepro.2014.06.023 ↗
5. Butenegro, J.A., Bahrami, M., Abenojar, J., and Martínez, M.Á. (2021). Recent progress in carbon fiber reinforced polymers recycling: A review of recycling methods and reuse of carbon fibers. Materials, 14.10.3390/ma14216401 ↗
6. Recycling of carbon fibre reinforced epoxy resin composites under various oxygen concentrations in nitrogen-oxygen atmosphere10.1016/j.jaap.2015.01.017 ↗
7. Lopez-Urionabarrenechea, A., Gastelu, N., Jiménez-Suárez, A., Prolongo, S.G., Serras-Malillos, A., Acha, E., and Caballero, B.M. (2021). Secondary raw materials from residual carbon fiber-reinforced composites by an upgraded pyrolysis process. Polymers, 13.10.3390/polym13193408 ↗
8. Controlling degradation and recycling of carbon fiber reinforced bismaleimide resin composites via selective cleavage of imide bonds10.1016/j.compositesb.2021.109595 ↗
9. Mild chemical recycling of aerospace fiber/epoxy composite wastes and utilization of the decomposed resin10.1016/j.polymdegradstab.2017.03.017 ↗
10. LCA and LCC of a chemical recycling process of waste CF-thermoset composites for the production of novel CF-thermoplastic composites. Open loop and closed loop scenarios10.1016/j.jclepro.2021.127158 ↗
11. Alkali-activated binders from waste incinerator bottom ashes and metakaolin reinforced by recycled carbon fiber composites10.3389/fmats.2020.583400 ↗
12. Saccani, A., Manzi, S., Totaro, G., and Lancellotti, I. (2021). Alkali-activated mortars modified by epoxy-carbon fiber composites wastes. Appl. Sci., 11.10.3390/app11136110 ↗
13. Prieto, M.I., González, M.L.N., Cobo, A., and Alonso, D. (2021). Comparison of the mechanical behavior of concrete containing recycled cfrp fibers and polypropylene fibers. Appl. Sci., 11.10.3390/app112110226 ↗
14. Sustainable biocarbon as an alternative of traditional fillers for poly(butylene terephthalate)-based composites: Thermo-oxidative aging and durability10.1002/app.47722 ↗
15. Hamlaoui, O., Klinkova, O., Elleuch, R., and Tawfiq, I. (2022). Effect of the glass fiber content of a polybutylene terephthalate reinforced composite structure on physical and mechanical characteristics. Polymers, 14.10.3390/polym14010017 ↗
16. Gómez, C., Mira, J., Carrión-Vilches, F.J., and Cavas, F. (2021). Dynamic moduli of polybutylene terephthalate glass fiber reinforced in high-temperature environments. Materials, 14.10.3390/ma14030483 ↗
17. Damage and damping of short-glass-fibre-reinforced PBT composites under dynamic conditions: Effect of matrix behaviour10.1016/j.compstruct.2019.111286 ↗
18. Recent progress in silane coupling agent with its emerging applications10.1007/s10924-021-02142-1 ↗
19. Fiore, V., Orlando, V., Sanfilippo, C., Badagliacco, D., and Valenza, A. (2020). Effect of silane coupling treatment on the adhesion between polyamide and epoxy based composites reinforced with carbon fibers. Fibers, 8.10.3390/fib8080048 ↗
20. Matrenichev, V., Belone, M.C.L., Palola, S., Laurikainen, P., and Sarlin, E. (2020). Resizing approach to increase the viability of recycled fi-bre-reinforced composites. Materials, 13.10.3390/ma13245773 ↗
21. Carbon fiber sizing agents based on renewable terpenes10.1016/j.compscitech.2022.109280 ↗
22. Enhancing the interfacial strength of carbon fiber reinforced epoxy composites by green grafting of poly(oxypropylene) diamines10.1016/j.compositesa.2017.04.003 ↗
23. Synthesis and modification of silica-based epoxy nanocomposites with different sol–gel process enhanced thermal and mechanical properties10.1002/app.51191 ↗
24. Relationships between the molecular architecture, crystallization capacity, and miscibility in poly(butylene terephthalate)/polycarbonate blends: A comparison with poly(ethylene terephthalate)/polycarbonate blends10.1002/polb.20156 ↗
25. Polymer blends: The PC-PBT case10.1039/B502036K ↗
26. Molecular orientation and relaxation in poly(butylene terephthalate)/polycarbonate blends10.1016/j.polymer.2003.08.018 ↗
27. Chemical reactions occurring during the preparation of polycarbonate-epoxy blends10.1016/S0032-3861(96)01089-0 ↗
28. PBT/PC blends compatibilized and toughened via copolymers in situ formed by MgO-catalyzed transesterification10.1021/ie504032w ↗
29. NMR and FTIR studies on transreactions and hydroxyl exchanges of bisphenol-A polycarbonate with an epoxy upon heating10.1016/S0032-3861(96)00751-3 ↗
30. Toughening of PBT/PC blends with epoxy functionalized core-shell modifiers10.1515/epoly.2009.9.1.939 ↗
31. Striking effect of epoxy resin on improving mechanical properties of poly(butylene terephthalate)/recycled carbon fibre composites10.1016/j.compscitech.2016.01.015 ↗
32. Investigation of interfacial and mechanical properties of various thermally-recycled carbon fibers/recycled PET composites10.1007/s12221-018-8305-x ↗
33. Characterization of PBT composites prepared by using various types of sized carbon fibers10.1016/j.matdes.2015.08.047 ↗
34. The effect of fiber concentration on mechanical and thermal properties of fiber reinforced polypropylene composites10.1002/app.20874 ↗