THE MORPHOLOGY AND MOULDING PROPERTIES OF MESOCARBON MICROBEADS (MCMBs) WITH DIFFERENT β RESINS

Mesocarbon Microbeads (MCMBs) with different β resins were obtained through extracting petroleum pitch with Pyridine repeatedly, and the Morphology of MCMBs were observed with Scanning Electronic Microscope(SEM), which could explain the self sintering properties of MCMBs. The results of SEM showed that, with the increase of pyridine extractions, the β resin contents decreased and the MCMBs dispersed uniformly gradually. The MCMBs containing various β resins were moulded at 150?℃ under 250?MPa and the bending strength of as prepared isotropic pieces were measured with Instron, which indicated that the bending strength of green pieces increased with the β resin content increasing. But the bending strength of the carbonized pieces has an optimum value as a function of β resin contents, indicating that an appropriate β resin content was needed for high performance isotropic carbon materials.