| 초록 |
Artificial graphites (AG) have been used in various industrial fields thanks to its high mechanical strength, high thermal and electrical conductivity. AG are made by graphitization of carbon block which composed of cokes or graphite wastes as filler, and pitches or resins as binder. Especially, coal tar pitches are commonly used as a binder for carbon block (CB) manufacturing. Recently, petroleum pitches from wasted residual oil are used as a binder for CB as a part of the upgrading of enormously produced residual oil. However, there is a problem with using petroleum pitches (PP) as a binder for CB because of the drastic density reduction during carbonization. Herein, we added mesophase pitches (MP) when synthesizing PP to solve this problem. The density reduction decreased as the ratio of MP increased. Added MP in raw material can contribute to the fixed carbon contents, resulting better mechanical strength of CB. |
