メルトブロー法により調製したメソフェーズピッチ炭素フィルムの配向性と力学特性

抄録

A highly-oriented continuous carbon tape was prepared from a coal tar-based mesophase pitch by melt-blowing using a slit type nozzle. The molten precursor pitch was continuously extruded through the slit nozzle to produce a pitch tape along the drawing direction. The tape was oxidized, carbonized and graphitized. Examination of the crystallite orientation distribution function (CODF) for the (002) plane by X-ray diffraction revealed that the carbon layer planes were oriented parallel to the tape surface indicating a strong anisotropy. The degree of CODF largely depended on the oxidation time and carbonization temperature. The orientation was greater in the tape drawing direction than in the tape width direction. The mechanical properties largely depended on the oxidation temperature and reached maximum values at around the softening point.