期刊
COMPOSITES SCIENCE AND TECHNOLOGY
卷 173, 期 -, 页码 66-72出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2019.01.026
关键词
Supercritical fluid; Carbon fiber reinforced plastic; Recycle; Decomposition; Epoxy
资金
- KIST Institutional Program
The objective of this study is to fabricate conductive carbon fiber composites with thermal and electrical properties by degradation carbon-fiber-reinforced plastics (CFRPs) and recycled carbon fibers using only supercritical water without any catalyst or oxidant. We focused on a recycling method that is harmless to the human body and environment-friendly, by using supercritical fluid water rather than recycling CFRP by physical or pyrolysis methods. In particular, we recycled carbon fibers (R-CFs) in which up to 99.5% of epoxy resin was removed, by optimizing the conditions of supercritical fluid water (SCF-W) treatment, and we fabricated conductive R-CFs composites with thermal and electrical properties by combining the R-CFs with cyclic butylene terephthalate (CBT), which is a polymerizable low-viscosity thermoplastic resin. The fabricated composites had a thermal conductivity of 1.35 +/- 0.05 (W/mK) and an electrical conductivity of 11.23 x 10(-6) (S/cm) when the added amount of recycled carbon fibers was 5 wt%.
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