期刊
POLYMER DEGRADATION AND STABILITY
卷 97, 期 3, 页码 214-220出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2011.12.028
关键词
Carbon fibre; Chemical recycling; Decomposition; Epoxy resin; Subcritical water
资金
- National Natural Science Foundation of China [51103154, 51073149, 50921062]
- Chinese Academy of Sciences [KGCX2-YW-230, KGCX2-EW-211]
The combination of phenol and potassium hydroxide (KOH) was used to chemically recycle carbon fibre reinforced epoxy resin cured with 4,4'-diaminodiphenylmethane in subcritical water. This combination had a synergistic effect on decomposing this kind of epoxy resin. The main decomposition products from the epoxy resin were identified by means of GC MS, and a possible free-radical reaction mechanism for the decomposition of epoxy resin is proposed. The recovered carbon fibres were characterized using single fibre tensile tests, scanning electron microscopy and X-ray photoelectron spectroscopy. Compared to virgin carbon fibres after sizing removal, the surface compositions of the recovered carbon fibres had little change and the tensile strength of the recovered carbon fibres was well retained. (C) 2012 Elsevier Ltd. All rights reserved.
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