減圧下で調製されたメソフェーズピッチの物性に及ぼす出発ピッチの影響
1985 年 64 巻 12 号 p. 1010-1016
詳細
1985 年 64 巻 12 号 p. 1010-1016
Carbonaceous mesophase pitches were prepared from two petroleum pitches by assuring homogeneous heating under vacuum and stirring.
The mesophase pitches were characterized in terms of their solubilities, optical anisotropy, softening temperature and the thermal stability to correlate to their structural characteristics. Among the characteristics, their contents of naphthenic groups which inherited their starting pitches appear to be a key factor controlling their properties.
Their roles in the carbonization are discussed from views of the carbonization reactivity and static properties. The carbonization behaviors of the pitch in the presence of sulfur are also discussed. Hydrogens in the pitch were identified by NMR and their reactivity against sulfur at the temperature rising.
