Effect of Post-Cathodic EPD Acetone Washing of Carbon Fibres on the Mechanical Properties of Graphene Carboxyl Embedded CFRP Composites

Carbon fibre-reinforced polymer (CFRP) composites have evolved as one of the most reliable materials for critical structural applications. Electrophoretic deposition (EPD) is one among the most opted routes to carry out the surface modification of carbon fibre (CF). Methyl violet (MV) is used in the...

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Bibliographic Details
Published in:Transactions of the Indian Institute of Metals 2022, Vol.75 (7), p.1789-1795
Main Authors: Gangineni, Pavan Kumar, Dash, Soumya Sumit, Ganesh Gupta K, B. N. V. S., Prusty, Rajesh Kumar, Ray, Bankim Chandra
Format: Article
Language:English
Subjects:
Acetone
Carbon
Carbon fiber reinforced plastics
Chemistry and Materials Science
Corrosion and Coatings
Electron microscopes
Electrophoretic deposition
Failure analysis
Failure mechanisms
Failure modes
Fiber reinforced polymers
Flexural strength
Fourier transforms
Graphene
Impact analysis
Infrared analysis
Interfacial shear strength
Materials Science
Mechanical properties
Metallic Materials
Original Article
Polymer matrix composites
Shear strength
Shear tests
Tribology
Washing
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Summary:Carbon fibre-reinforced polymer (CFRP) composites have evolved as one of the most reliable materials for critical structural applications. Electrophoretic deposition (EPD) is one among the most opted routes to carry out the surface modification of carbon fibre (CF). Methyl violet (MV) is used in the cathodic EPD technique to maintain stability of suspension and to impart positive charge to the nanofillers thereby facilitating the cathodic EPD. In the current research work, the authors have deposited graphene carboxyl (G–COOH) on CF surface via cathodic EPD route, and an attempt was made to analyse the impact of MV on the mechanical behaviour of the modified CFRP composite by carrying out flexural and short beam shear tests. The G–COOH/CFRP composite in which MV was removed with acetone washing has shown an improvement of 21.93% and 10.89% in interlaminar shear strength (ILSS) and flexural strength (FS), respectively, in comparison to neat CFRP composite. However, G–COOH/CFRP composite in which the MV was not washed has shown a decrement of 20.82% and 3.21% in ILSS and FS in comparison to neat CFRP composite, respectively. High-resolution transmission electron microscope was used to observe the morphology of graphene carboxyl, and scanning electron microscope was used to carry out fractography analysis to comprehend the failure mechanism and dominant failure mode. Fourier transform infrared spectroscopy analysis was carried out to understand the effect of methyl violet on the epoxy/nanofiller interface chemistry.
ISSN:0972-2815
0975-1645
DOI:10.1007/s12666-022-02551-3