Recovery of carbon fibre from waste prepreg via microwave pyrolysis
Management of waste from carbon fibre composites has become a significant societal issue as the application of composite grows across many industries. In this study, carbon fibres (CF) were successfully recovered from cured carbon fibre/epoxy (CF/EP) prepreg under microwave pyrolysis at 450, 550 and...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021
|
| Subjects: | |
| Online Access: | https://eprints.nottingham.ac.uk/65571/ |
| _version_ | 1848800243580141568 |
|---|---|
| author | Hao, Siqi He, Lizhe Liu, Jiaqi Liu, Yuhao Rudd, Chris Liu, Xiaoling |
| author_facet | Hao, Siqi He, Lizhe Liu, Jiaqi Liu, Yuhao Rudd, Chris Liu, Xiaoling |
| author_sort | Hao, Siqi |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Management of waste from carbon fibre composites has become a significant societal issue as the application of composite grows across many industries. In this study, carbon fibres (CF) were successfully recovered from cured carbon fibre/epoxy (CF/EP) prepreg under microwave pyrolysis at 450, 550 and 650◦ C followed by oxidation of any residual char. The recovered fibres were investigated for their tensile properties, surface morphologies and the elements/functional groups presented on the surface. The chemical compositions of gaseous and oil pyrolysis products were also analysed. The microwave pyrolysis effectively pyrolyzed the epoxy (EP) resin. Char residue remained on the fibre surface and the amount of char reduced as the pyrolysis temperature increased. Compared to virgin fibres, the recovered fibre suffered from a strength reduction by less than 20%, and this reduction could be mitigated by reducing the pyrolysis temperature. The surface of recovered fibre remained clean and smooth, while the profile of elements and functional groups at the surface were similar to those of virgin fibres. The main gaseous products were CO, H2, CO2 and CH4, whilst the liquid product stream included phenolic and aromatic compounds. |
| first_indexed | 2025-11-14T20:48:28Z |
| format | Article |
| id | nottingham-65571 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T20:48:28Z |
| publishDate | 2021 |
| publisher | MDPI AG |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-655712021-06-04T02:39:45Z https://eprints.nottingham.ac.uk/65571/ Recovery of carbon fibre from waste prepreg via microwave pyrolysis Hao, Siqi He, Lizhe Liu, Jiaqi Liu, Yuhao Rudd, Chris Liu, Xiaoling Management of waste from carbon fibre composites has become a significant societal issue as the application of composite grows across many industries. In this study, carbon fibres (CF) were successfully recovered from cured carbon fibre/epoxy (CF/EP) prepreg under microwave pyrolysis at 450, 550 and 650◦ C followed by oxidation of any residual char. The recovered fibres were investigated for their tensile properties, surface morphologies and the elements/functional groups presented on the surface. The chemical compositions of gaseous and oil pyrolysis products were also analysed. The microwave pyrolysis effectively pyrolyzed the epoxy (EP) resin. Char residue remained on the fibre surface and the amount of char reduced as the pyrolysis temperature increased. Compared to virgin fibres, the recovered fibre suffered from a strength reduction by less than 20%, and this reduction could be mitigated by reducing the pyrolysis temperature. The surface of recovered fibre remained clean and smooth, while the profile of elements and functional groups at the surface were similar to those of virgin fibres. The main gaseous products were CO, H2, CO2 and CH4, whilst the liquid product stream included phenolic and aromatic compounds. MDPI AG 2021-04-10 Article PeerReviewed application/pdf en cc_by https://eprints.nottingham.ac.uk/65571/1/Recovery%20of%20carbon%20fibre%20from%20waste%20prepreg%20via%20microwave%20pyrolysis.pdf Hao, Siqi, He, Lizhe, Liu, Jiaqi, Liu, Yuhao, Rudd, Chris and Liu, Xiaoling (2021) Recovery of carbon fibre from waste prepreg via microwave pyrolysis. Polymers, 13 (8). p. 1231. ISSN 2073-4360 carbon fibre; recycling; microwave; pyrolysis http://dx.doi.org/10.3390/polym13081231 doi:10.3390/polym13081231 doi:10.3390/polym13081231 |
| spellingShingle | carbon fibre; recycling; microwave; pyrolysis Hao, Siqi He, Lizhe Liu, Jiaqi Liu, Yuhao Rudd, Chris Liu, Xiaoling Recovery of carbon fibre from waste prepreg via microwave pyrolysis |
| title | Recovery of carbon fibre from waste prepreg via microwave pyrolysis |
| title_full | Recovery of carbon fibre from waste prepreg via microwave pyrolysis |
| title_fullStr | Recovery of carbon fibre from waste prepreg via microwave pyrolysis |
| title_full_unstemmed | Recovery of carbon fibre from waste prepreg via microwave pyrolysis |
| title_short | Recovery of carbon fibre from waste prepreg via microwave pyrolysis |
| title_sort | recovery of carbon fibre from waste prepreg via microwave pyrolysis |
| topic | carbon fibre; recycling; microwave; pyrolysis |
| url | https://eprints.nottingham.ac.uk/65571/ https://eprints.nottingham.ac.uk/65571/ https://eprints.nottingham.ac.uk/65571/ |