Abstract
The relevance of the use and necessity of obtaining carbon fibers and materials based on their domestic oil raw materials is shown. The results of investigations of physical, chemical and fiber-forming properties of pitches made of heavy pyrolysis tar from ethylene production and asphaltite tar of West Siberian oil are presented. The possibility of obtaining pitch fibers is shown experimentally. Pitches with a softening temperature of 170-220 ° C in the temperature range of 220-300 ° C are able to form continuous fibers from the melt with a diameter of 8-42 microns and are stably formed at the maximum speed of pulling the thread 6.5-10.6 m/s. In the study of the fiber-forming ability of petroleum pitches, the influence of the softening temperature on the maximum speed of forming of pitch fibers and the specific number of flows on the fiber was determined. The values of melt viscosity and softening temperature of pitches that are optimal for the formability of the pitch fiber are found. The dependence of the maximum speed of thread pulling is determined.
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