Recycling Process of a Basalt Fiber-Epoxy Laminate by Solvolysis: Mechanical and Optical Tests
Basalt fibre epoxy composites well suit various engineering applications for their mechanical properties and chemical stability. However, after basalt/epoxy product lifespan, there are not many established ways to treat and recycle the fibers without deteriorating their physical, mechanical and chem...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Fibers |
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| Online Access: | https://www.mdpi.com/2079-6439/10/6/55 |
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| author | Livia Persico Giorgia Giacalone Beatrice Cristalli Carla Tufano Eudora Saccorotti Pietro Casalone Giuliana Mattiazzo |
| author_facet | Livia Persico Giorgia Giacalone Beatrice Cristalli Carla Tufano Eudora Saccorotti Pietro Casalone Giuliana Mattiazzo |
| author_sort | Livia Persico |
| collection | DOAJ |
| description | Basalt fibre epoxy composites well suit various engineering applications for their mechanical properties and chemical stability. However, after basalt/epoxy product lifespan, there are not many established ways to treat and recycle the fibers without deteriorating their physical, mechanical and chemical properties. In this study, a chemical recycling method for basalt fiber reinforced polymers is presented. The process is based on previous studies concerning carbon fibers epoxy composites in which the fibers are separated from the polymeric matrix through a solvolysis reaction at temperature below 160 °C. Firstly, the specimens are thermally pre-treated in a heater set over the glass transition temperature, to promote the polymeric swelling of the matrix. The chemical degradation is obtained by means of a solution of glacial acetic acid (AcOH) and hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>): compact, clean, resin-free, recycled woven fabrics are obtained and the original length of the yarns is maintained. Breaking tenacity of the recycled basalt fibers is kept up to 90.5% compared to the virgin ones, while, with a pyrolysis treatment, this value cannot exceed the 35%. |
| first_indexed | 2024-03-09T23:50:41Z |
| format | Article |
| id | doaj.art-7175acf0acd843c4964ac0fa09d51e52 |
| institution | Directory Open Access Journal |
| issn | 2079-6439 |
| language | English |
| last_indexed | 2024-03-09T23:50:41Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fibers |
| spelling | doaj.art-7175acf0acd843c4964ac0fa09d51e522023-11-23T16:35:28ZengMDPI AGFibers2079-64392022-06-011065510.3390/fib10060055Recycling Process of a Basalt Fiber-Epoxy Laminate by Solvolysis: Mechanical and Optical TestsLivia Persico0Giorgia Giacalone1Beatrice Cristalli2Carla Tufano3Eudora Saccorotti4Pietro Casalone5Giuliana Mattiazzo6Department of Applied Science and Technology, Politecnico di Torino, 10129 Turin, ItalyDepartment of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Turin, ItalyDepartment of Applied Science and Technology, Politecnico di Torino, 10129 Turin, ItalyDepartment of Applied Science and Technology, Politecnico di Torino, 10129 Turin, ItalyDepartment of Applied Science and Technology, Politecnico di Torino, 10129 Turin, ItalyDepartment of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Turin, ItalyDepartment of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Turin, ItalyBasalt fibre epoxy composites well suit various engineering applications for their mechanical properties and chemical stability. However, after basalt/epoxy product lifespan, there are not many established ways to treat and recycle the fibers without deteriorating their physical, mechanical and chemical properties. In this study, a chemical recycling method for basalt fiber reinforced polymers is presented. The process is based on previous studies concerning carbon fibers epoxy composites in which the fibers are separated from the polymeric matrix through a solvolysis reaction at temperature below 160 °C. Firstly, the specimens are thermally pre-treated in a heater set over the glass transition temperature, to promote the polymeric swelling of the matrix. The chemical degradation is obtained by means of a solution of glacial acetic acid (AcOH) and hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>): compact, clean, resin-free, recycled woven fabrics are obtained and the original length of the yarns is maintained. Breaking tenacity of the recycled basalt fibers is kept up to 90.5% compared to the virgin ones, while, with a pyrolysis treatment, this value cannot exceed the 35%.https://www.mdpi.com/2079-6439/10/6/55basalt fibers epoxy compositescomposites recyclabilityepoxy matrix chemical degradationbasalt fiber recycling |
| spellingShingle | Livia Persico Giorgia Giacalone Beatrice Cristalli Carla Tufano Eudora Saccorotti Pietro Casalone Giuliana Mattiazzo Recycling Process of a Basalt Fiber-Epoxy Laminate by Solvolysis: Mechanical and Optical Tests Fibers basalt fibers epoxy composites composites recyclability epoxy matrix chemical degradation basalt fiber recycling |
| title | Recycling Process of a Basalt Fiber-Epoxy Laminate by Solvolysis: Mechanical and Optical Tests |
| title_full | Recycling Process of a Basalt Fiber-Epoxy Laminate by Solvolysis: Mechanical and Optical Tests |
| title_fullStr | Recycling Process of a Basalt Fiber-Epoxy Laminate by Solvolysis: Mechanical and Optical Tests |
| title_full_unstemmed | Recycling Process of a Basalt Fiber-Epoxy Laminate by Solvolysis: Mechanical and Optical Tests |
| title_short | Recycling Process of a Basalt Fiber-Epoxy Laminate by Solvolysis: Mechanical and Optical Tests |
| title_sort | recycling process of a basalt fiber epoxy laminate by solvolysis mechanical and optical tests |
| topic | basalt fibers epoxy composites composites recyclability epoxy matrix chemical degradation basalt fiber recycling |
| url | https://www.mdpi.com/2079-6439/10/6/55 |
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