| 초록 |
Pyrolysis fuel oil (PFO) is used as a precursor for binder pitch. It is well known that a quinoline-insoluble (QI) content of the binder pitch is important to prepare an artificial graphite. In this study, to increase QI content of binder pitch, the PFO was modified by heat-treatment with different amount of carbon black at 340 oC for 4 h. The SP and molecular weight distribution of carbon black added reforming pitches are decreased compared to that of the pristine pitch because volatile components of PFO residue are absorbed onto the carbon black surface during the heat treatment. The QI of pristine pitch and carbon black added pitch are 0.5 and 17%, respectively. This result indicates that the carbon black into the PFO is acted as nuclei for the growth of QI particles, thus the QI content in the binder pitch can be controlled according to carbon black content. |
