scholarly journals The preparation and characterization of a carbon fiber-reinforced epoxy resin and EPDM composite using the co-curing method

RSC Advances ◽  
2020 ◽  
Vol 10 (35) ◽  
pp. 20588-20594
Author(s):  
BinXiao Wei ◽  
XiaoTong Yi ◽  
YongJian Xiong ◽  
XinJing Wei ◽  
YaDong Wu ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Epoxy Resin ◽  
Fiber Reinforced ◽  
One Step ◽  
Carbon Fiber Reinforced ◽  
Curing Method

The CFRP/EPDM composite was prepared by a one-step co-curing method, which was very convenient and energy effective.

scholarly journals Orthogonal Experimental Analysis and Mechanism Study on Electrochemical Catalytic Treatment of Carbon Fiber-Reinforced Plastics Assisted by Phosphotungstic Acid

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 1866
Author(s):  
Chun Pei ◽  
Peiheng Guo ◽  
Ji-Hua Zhu
Keyword(s):  
Carbon Fiber ◽  
Epoxy Resin ◽  
Carbon Fibers ◽  
Phosphotungstic Acid ◽  
Degradation Mechanism ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced Plastics ◽  
Reinforced Plastics ◽  
Fiber Reinforced Plastics ◽  
Carbon Fiber Reinforced

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—current density, PA concentration, and reaction time—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.

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