Hybrid Composites Based on Carbon Fiber/Carbon Nanofilament Reinforcement

Download
Author
Tehrani, Mehran
Boroujeni, Ayoub Yari
Luhrs, Claudia
Phillips, Jonathan
Al-Haik, Marwan S.
Date
2014Metadata
Show full item recordAbstract
Carbon nanofilament and nanotubes (CNTs) have shown promise for enhancing the mechanical properties of fiber-reinforced composites (FRPs) and imparting multi-functionalities to them. While direct mixing of carbon nanofilaments with the polymer matrix in FRPs has several drawbacks, a high volume of uniform nanofilaments can be directly grown on fiber surfaces prior to composite fabrication. This study demonstrates the ability to create carbon nanofilaments on the surface of carbon fibers employing a synthesis method, graphitic structures by design (GSD), in which carbon structures are grown from fuel mixtures using nickel particles as the catalyst. The synthesis technique is proven feasible to grow nanofilament structures—from ethylene mixtures at 550 °C—on commercial polyacrylonitrile (PAN)-based carbon fibers. Raman spectroscopy and electron microscopy were employed to characterize the surface-grown carbon species. For comparison purposes, a catalytic chemical vapor deposition (CCVD) technique was also utilized to grow multiwall CNTs (MWCNTs) on carbon fiber yarns. The mechanical characterization showed that composites using the GSD-grown carbon nanofilaments outperform those using the CCVD-grown CNTs in terms of stiffness and tensile strength. The results suggest that further optimization of the GSD growth time, patterning and thermal shield coating of the carbon fibers is required to fully materialize the potential benefits of the GSD technique.
Description
The article of record as published may be found at http://dx.doi.org/10.3390/ma7064182
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
Related items
Showing items related by title, author, creator and subject.
-
In Situ Raman Spectroscopy of the Nanodiamond-to- Carbon Onion Transformation During Thermal Annealing of Detonation Nanodiamond Powder
Cebik, Jonathan E. (Monterey, California. Naval Postgraduate School, 2012-06);In this study, in situ Raman spectroscopy is utilized to investigate the onset of nanodiamond (ND) graphitization, the conversion of diamond (sp3) to graphitic (sp2) carbon, and the subsequent formation of carbon onions. ... -
Hybrid composites based on carbon fiber/carbon nanofilament reinforcement
Tehrani, Mehran; Boroujeni, Ayoub Yari; Luhrs, Claudia; Phillips, Jonathan; Al-Haik, Marwan S. (2014);Carbon nanofilament and nanotubes (CNTs) have shown promise for enhancing the mechanical properties of fiber-reinforced composites (FRPs) and imparting multi-functionalities to them. While direct mixing of carbon ... -
Scarf joint modeling and analysis of composite materials
Marrón, Armando (Monterey, California. Naval Postgraduate School, 2009-06);The objective of this study is to investigate joint strength of the scarf joint configuration, constructed from carbon and glass woven fabric hybrid laminates, with different material combinations. Glass/glass, glass/carbon, ...