| 초록 |
In this study, the effect of the pitch wettability change with temperature during the carbon block impregnation process was studied. The upper chamber was heated above the softening point to melt the pitch and control the wettability. The lower chamber was kept at the same temperature as the upper chamber during the vacuum treatment and then at 340 ° C, 360 ° C and 380 ° C during impregnation. The impregnated carbon blocks were heat treated for 1 hour while maintaining the temperature at 1,100 ° C. in a nitrogen atmosphere. The element content of the pitch and the viscosity at each temperature were measured using an element analyzer and a viscometer. The internal shape, thermal conductivity and density of the carbon blocks were measured by scanning electron microscopy, hot disk method and Archimedes method. As a result of the experiment, the higher the wettability of the pitch, the higher the density and thermal conductivity of the carbon block and the denser the internal shape. |
