AN EFFECTIVE METHOD FOR PITCH COMPOSITION DESIGN

In order to control the pitch properties, an effective study method for pitch composition design was developed successfully. As an example of impregnant pitch modification, the methods of researching correlativity of pitch solvent fractions, properties and modification process parameters were investigated exploringly. Experiential equations of fraction distribution to pitch properties and process parameters to fraction distribution were gained through appropriate experiments and analysis. Based on these equations, proper process parameters could be known according to the proper distribution of pitch fractions, which came from the expected pitch properties.