ISOTROPIC CARBON FIBRES FROM ANTHRACENE OIL DERIVATIVES

摘要

Anthracene oil is a low value distilled fraction of coal tar, largely made up of polyeyclic aromatic hydrocarbons of 3-5 rings. The anthracene oil can be transformed into pitch by means of oxidative thermal treatment, whose main properties are their high aromaticity and a total absence of solid particles, making them excellent candidates for the preparation of carbon fibres. In the present work a detailed study of the different variables involved in the processing of the anthracene oil-based pitch for the preparation of isotropic fibres is carried out. Aspects such as the temperature, the spinning speed and the nitrogen pressure used in the spinning of the fibre are optimized in accordance with 6the characteristics of the parent isotropic pitch in order to obtain isotropic carbon fibres with a homogeneous surface devoid of defects.