Mohammad Mahdi Sotoudehnia - Department of ceramic engineering, Institute Of Materials and Energy Research Center, Karaj, ۳۱۷۸۷-۳۱۶ Iran
Sahebali Manafi - Department of ceramic engineering, Member of Young Research Club (YRC)- Islamic Azad University, Shahrood Branch, P.O. Box ۳۶۱۵۵-۱۶۳, Shahrood- Iran.
Amir Maghsoudipour - Department of ceramic engineering, Institute Of Materials and Energy Research Center, Karaj, ۳۱۷۸۷-۳۱۶ Iran
fatollah moztarzadeh - faculty of Biomedical Engineering, Amirkabir University Of Technology, ۴۲۴ Hafez Ave Tehran ۱۵۸۷۵- ۴۴۱۳ Iran

Iranian coal tar pitches include AP63, AP14, MSP and HSP with their fractionation and Natural pitch characterized by carbon yield, density, viscosity, fractionation with solvents, and thermal treatment type using TGA tests. TGA results show characteristic differences in pyrolysis behavior of coal tar pitches, natural pich and fractionation of the pitches. The suitability of these commercially available matrices for densification of 3D C/C composites was examined by a low-pressure impregnation/carbonization process. Best Iranian pitch selected in terms of theoretical result. Data measured after impregnation indicated that using chosen type of pitch results in a density higher than other types.

Pitch, Thermoplast resins, Impregnation, C/C Composite