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- Title
Studies on Recycling Silane Controllable Recovered Carbon Fiber from Waste CFRP.
- Authors
Chin, Kai-Yen; Shiue, Angus; Wu, Yi-Jing; Chang, Shu-Mei; Li, Yeou-Fong; Shen, Ming-Yuan; Leggett, Graham
- Abstract
During the production process of commercial carbon fiber reinforced polymers (CFRPs), a silane coupling agent is added to the carbon fiber at the sizing step as a binder to enhance the product's physical properties. While improving strength, the silane coupling agent results in a silane residue on recovered carbon fibers (rCF) after recycling, which is a disadvantage when using recovered carbon fibers in the manufacture of new materials. In this study, the rCF is recovered from waste carbon fiber reinforced polymers (CFRPs) from the bicycle industry by a microwave pyrolysis method, applying a short reaction time and in an air atmosphere. Moreover, the rCF are investigated for their surface morphologies and the elements present on the surface. The silicon element content changes with pyrolysis temperature were 0.4, 0.9, and 0.2%, respectively, at 450, 550, and 650 °C. Additionally, at 950 °C, silicon content can be reduced to 0.1 ± 0.05%. The uniformity of microwave pyrolysis recycle treatment was compared with traditional furnace techniques used for bulk waste treatment by applying the same temperature regime. This work provides evidence that microwave pyrolysis can be used as an alternative method for the production of rCFs for reuse applications.
- Subjects
CARBON fibers; SILANE coupling agents; WASTE treatment; CARBON fiber-reinforced plastics; MANUFACTURING processes; BICYCLE industry; SILANE
- Publication
Sustainability (2071-1050), 2022, Vol 14, Issue 2, p700
- ISSN
2071-1050
- Publication type
Article
- DOI
10.3390/su14020700