TABLE 8.2 Properties of Vapor-Grown Carbon Nanofibers Carbon Nanofibers" Properties Pyrotically Stripped Diameter(nm) 60-200 Density (g/cm) 1.8 Tensile Modulus(GPa） 600 Tensile Strength(GPa) 7 Coefficient of thermal expansion(10C) -1.0 Electrical resistivity (n cm) 55 a Pyrograf III,produced by Applied Sciences,Inc. magnitude larger in diameter than the VGCNF,have shown that tensile modulus decreases with increasing diameter,whereas tensile strength decreases with both increasing diameter and increasing length. Carbon nanofibers have been incorporated into several different thermo- plastic and thermoset polymers.The results of carbon nanofiber addition on the mechanical properties of the resulting composite have been mixed. 0.2um FIGURE 8.4 Photograph of carbon nanofibers.(Courtesy of Applied Sciences,Inc. With permission.) 2007 by Taylor Francis Group.LLC.magnitude larger in diameter than the VGCNF, have shown that tensile modulus decreases with increasing diameter, whereas tensile strength decreases with both increasing diameter and increasing length. Carbon nanofibers have been incorporated into several different thermo￾plastic and thermoset polymers. The results of carbon nanofiber addition on the mechanical properties of the resulting composite have been mixed. TABLE 8.2 Properties of Vapor-Grown Carbon Nanofibers Carbon Nanofibersa Properties Pyrotically Stripped Diameter (nm) 60–200 Density (g=cm3 ) 1.8 Tensile Modulus (GPa) 600 Tensile Strength (GPa) 7 Coefficient of thermal expansion (106 =8C) 1.0 Electrical resistivity (mV cm) 55 a Pyrograf III, produced by Applied Sciences, Inc. FIGURE 8.4 Photograph of carbon nanofibers. (Courtesy of Applied Sciences, Inc. With permission.)
2007 by Taylor & Francis Group, LLC.