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Manufacturing of Nanocomposite Carbon Fibers and Composite CylindersPitch-based nanocomposite carbon fibers were prepared with various percentages of carbon nanofibers (CNFs), and the fibers were used for manufacturing composite structures. Experimental results show that these nanocomposite carbon fibers exhibit improved structural and electrical conductivity properties as compared to unreinforced carbon fibers. Composite panels fabricated from these nanocomposite carbon fibers and an epoxy system also show the same properties transformed from the fibers. Single-fiber testing per ASTM C1557 standard indicates that the nanocomposite carbon fiber has a tensile modulus of 110% higher, and a tensile strength 17.7% times higher, than the conventional carbon fiber manufactured from pitch. Also, the electrical resistance of the carbon fiber carbonized at 900 C was reduced from 4.8 to 2.2 ohm/cm. The manufacturing of the nanocomposite carbon fiber was based on an extrusion, non-solvent process. The precursor fibers were then carbonized and graphitized. The resultant fibers are continuous.
Document ID
20130013563
Document Type
Other - NASA Tech Brief
Authors
Tan, Seng
(Wright Materials Research Co. Beavercreek, OH, United States)
Zhou, Jian-guo
(Wright Materials Research Co. Beavercreek, OH, United States)
Date Acquired
August 27, 2013
Publication Date
May 1, 2013
Publication Information
Publication: NASA Tech Briefs, May 2013
Subject Category
Composite Materials
Report/Patent Number
MFS-32943-1
Distribution Limits
Public
Copyright
Public Use Permitted.
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