Preparation of Carbon Solid from Dormant Mesophase Pitch without using a Binder

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J. Korean Ceram. Soc. > Volume 29(5); 1992 > Article

Journal of the Korean Ceramic Society 1992;29(5): 396.

잠재적 이방성 핏치를 이용한 탄소성형체 제조

김제영, 이성영, 최재훈, 박양덕

산업과학기술연구소 탄소재료연구실

Preparation of Carbon Solid from Dormant Mesophase Pitch without using a Binder

ABSTRACT

Carbon solid was prepared from dormant mesophase pitch (DMPP) without using a binder and its properties were characterized. DMPP powder was stabilized with air or nitric acid in pretreatment stage so that it might not soften in later heat ttreatment stage. Optimum sintering properties were obtained from carbon powder with 2.36∼2.38 of C/H atomic ratio and 1.27∼1.40 of C/O atomic ration in air stabilization. In nitric acid stabilization, optimum sintering properties were obtained when 20∼40 vol.% of nitric acid solution was used. Compressive strength increased up to 1200$^{circ}C$ of heat treatment temperature, and the highest compressive strength and bulk density of carbon solid from DMPP were 3000 kgf/㎤, respectively. The optical properties of carbon solid obtained was fine mosaic structure. Carbon solid after graphitization showed the properties of hard carbon due to stabilization and its shore hardness was 120.