โ Scribed by Y. Korai; S. Ishida; F. Watanabe; S.-H. Yoon; Y.-G. Wang; I. Mochida; I. Kato; T. Nakamura; Y. Sakai; M. Komatsu
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๐ SIMILAR VOLUMES
The inยฏuence of pitch precursor composition on the formation and properties of isotropic pitch ยฎbers from non-conventional precursors has been examined. Changes in ยฎber weight that occur during the oxidative stabilization of green ยฎbers are inversely related to the observed axial contraction. The we
Co-carbonization of naphthalene-derived mesophase pitch (NMP) and novolac-type phenolic resin (NV) was investigated to densify the carbon derived from the mesophase pitch. Blending both types of phenolic resin to NMP suppressed the expansion during carbonization to densify the resultant carbon. Ther
A QI-free coal tar pitch with a softening point around 80ยฐC was air blown in an autoclave at 330", 360", and 38O"C, respectively, for various periods in order to prepare a pitch precursor for GPCF. Air blowing markedly increased the softening point and contents of solvent insoluble fractions such as
## An efficient preparation of mesophase spheres was attempted from synthetic isotropic pitches of naphthalene oligomers. A large number of spheres of rather uniform diameter were obtained by the carbonization at 380ยฐC for 20 h. Volumetric and yields of spheres in the pitch were volumetrically mea
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