The C-type mesophase pitch-based carbon fiber (C-MPCF) was prepared throuch C-type spinnerette and compared the mechanical properties to those of round type mesophase pitch fiber (R-MPCF) and C-type isotropic pitch fiber (C-iPCF). The tensile strength and modulus of C-MPCF were about 18.6% and 35.7% higher than those of R-MPCF. The tensile strength of C-MPCF was 62% higher than that of C-iPCF of the same 8μm thickness because of more linear transverse texture, which could be easily converted to graphitic crystallinity during heat treatment. The torsional rigidity of C-MPCF was 2.37 times higher than that of R-MPCF. The electrical resistivity of C-MPCF was 8μΩ·m. The C-iPCF shows far lower electrical resistivity than R-iPCF as well as the mesophase carbon fiber because of better alignment of texture to the fiber axis.

• Seung-Kon Ryu(Department of Chemical Engineering, Chungnam National University)
• Bo-Sung Rhee(Department of Chemical Engineering, Chungnam National University)
• Xiao Ping Yang(Institute of Carbon Fiber and Composites, Beijing Univ. of Chemical Technology)
• Yafei Lu(Institute of Carbon Fiber and Composites, Beijing Univ. of Chemical Technology)