Chemical and Physical Aspects of Mesophase Formation during Carbon-Carbon Processing

摘要

Experimental work performed and to be discussed in this report includes (a) studies of mesophase formation in three coal tar pitches at near atmospheric and moderately high pressure, which included determination of molecular weight distribution, quinoline insoluble measurement and microscopic examination; (b) measurement of sound velocity of phenanthrene up to 101 MPa (15,000 psi) and coal tar pitch at one atmosphere and calculation of adiabatic compressibilities; (c) measurement of viscosity of naphthalene, phenanthrene and 277-15V pitch up to 101 MPa using a falling needle viscometer; and (d) measurement of thermal diffusivity and conductivity of coal tar pitches in the as-received as well as partially pyrolyzed condition.