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Orthogonal Experimental Analysis and Mechanism Study on Electrochemical Catalytic Treatment of Carbon Fiber-Reinforced Plastics Assisted by Phosphotungstic Acid
- Source :
- Polymers, Volume 12, Issue 9, Polymers, Vol 12, Iss 1866, p 1866 (2020)
- Publication Year :
- 2020
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2020.
-
Abstract
- Preserving the integrity of carbon fibers when recycling carbon-fiber-reinforced plastics (CFRPs) has been unfeasible due to the harsh reaction conditions required to remove epoxy resin matrixes, which adversely affect the properties of carbon fibers. We establish a practicable and environmentally friendly reclamation strategy for carbon fibers. Carbon fibers are recycled from waste CFRPs by an electrochemical catalytic reaction with the assistance of phosphotungstic acid (PA), which promotes the depolymerization of diglycidyl ether of bisphenol A/ethylenediamine (DGEBA/EDA) epoxy resin. The removal rate, mechanical strength, and microstructure of the recycled carbon fibers are analyzed to explore the mechanism of the electrochemical treatment. The influence of three factors&mdash<br />current density, PA concentration, and reaction time&mdash<br />are studied via an orthogonal method. Range analysis and variance analysis are conducted to investigate the significance of the factors. The optimal conditions are determined accordingly. The underlying CFRP degradation mechanism is also investigated.
- Subjects :
- Bisphenol A
Materials science
Diglycidyl ether
Polymers and Plastics
orthogonal study
02 engineering and technology
electrochemical catalysis
010402 general chemistry
01 natural sciences
Article
Catalysis
lcsh:QD241-441
chemistry.chemical_compound
lcsh:Organic chemistry
Phosphotungstic acid
Depolymerization
recycled carbon fibers
General Chemistry
Epoxy
021001 nanoscience & nanotechnology
Microstructure
degradation mechanism
Environmentally friendly
0104 chemical sciences
Chemical engineering
chemistry
visual_art
visual_art.visual_art_medium
0210 nano-technology
Subjects
Details
- Language :
- English
- ISSN :
- 20734360
- Database :
- OpenAIRE
- Journal :
- Polymers
- Accession number :
- edsair.doi.dedup.....0500f93ae182ff063acf73a6428efc2d
- Full Text :
- https://doi.org/10.3390/polym12091866