PRELIMINARY INVESTGATION ABOUT THE RELATIONSHIPS BETWEEN PITCH FLUIDITY AND CARBON YIELD

Relationships between fluidity and carbon yields of the modified pitches, which were prepared by different methods and under different conditions, have been investigated. It was discovered that all of the softening points, viscosity and carbon yields of modified pitches got from the same process have good corresponding relationships, and different modification methods have different influences on pitch properties. So, special pitches with different uses can be developed by these methods.