.png){kind=icon}
.png){kind=icon}
Return
UV-Induced Photocatalytic Degradation of Carbon Fiber-Reinforced Amine-Cured Epoxy Composites Using an Acetic Acid/H2O2 System
.png){kind=icon}
PRE
AI
L
F
W
C
W
L
M
Y
DOI：10.1002/asia.70774.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Environmentally friendly recycling of carbon fiber-reinforced polymer (CFRP) waste is an urgent issue. In this study, amine-cured epoxy resin-based CFRPs were degraded using a UV-irradiated acetic acid/H2O2 system. The physicochemical properties of the recovered carbon fibers (RCFs) and degradation products were systematically characterized using SEM, XPS, FTIR, LC-MS, tensile and IFSS testing to deduce the degradation mechanism. Results indicate that UV irradiation accelerates hydroxyl radical generation and induces electronic transitions in C & horbar;N bonds. This significantly lowers the activation energy for bond cleavage, thereby enhancing degradation efficiency. Under optimal atmospheric conditions-CH3COOH/H2O2/resin mass ratio of 25: 5: 1, 110 degrees C, and 365 nm UV irradiation at 95% intensity (119 mW/cm2)-100% resin degradation was achieved in just 15 min. Furthermore, the surface oxygen content of the RCFs doubled compared to the pristine fibers, while retaining over 96% of their original single-fiber tensile strength.
Keywords:
amine-cured epoxy resin-based carbon fiber composites
acetic acid/hydrogen peroxide
recycling
ultraviolet light
Journal
C
IF:
3.3
Papers:
8.1K
Citations:
1.7W
Organization
Cited Papers