2007 NSTI Nanotechnology Conference and Trade Show - Nanotech 2007 - 10th Annual

Mechanical Properties of SWCNT Yarns and Felt-Composites

D.S. Lashmore, M.W. Schauer, M.W. Wittmann and J.J. Brown
Nanocomp Technologies Inc., US

Keywords:
single wall carbon nanotube, yarns, felts, breaking strength, Youngs modulus, composites

Abstract:
The mechanical properties of SWCNT yarns and felt-composites will be presented. It is shown that it is possible to create single wall carbon nanotube yarns with the properties near those of Kevlar™, for example breaking strengths over 1.5 GPa, modulus values over 100 GPA, and strain to fail over 10%. Further these yarns can be synthesized in kilometer lengths. Felts produced from the same type of material lend themselves to being incorporated in composite materials with high CNT loading, exceeding that of nanotube blending processes. Fabrication and properties of several different types of polymeric composites will be presented, including data on modulus and breaking strength for polyethylene polyamide and polycarbonate composites containing from10 to 40% CNT.

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