Process for the preparation of carbon fibers and carbon fibers produced by this method

METHOD OF PREPARATION OF CARBON FIBER WHICH SPECIFIC PROPERTIES ARE COMPARABLE TO THOSE OF CARBON FIBER-BASED POLYACRYLONITRILE PAN IN WHICH PITCH OPTICAL ISOTROPIC OBTAINED BY POLYMERIZATION OF NAPHTHALENE AT A TEMPERATURE NOT EXCEEDING 330C PRODUCT AND HEATING POLYMER OBTAINED AT A TEMPERATURE OF 330 TO 440C WHILE WE INTRODUCED Y INERT GAS TO eLIMINATE THE VOLATILE COMPONENTS, IS SUBJECT TO MELT SPINNING IS MADE infusible (thermoset) AND SUBJECT TO ONE AND CHARCOAL FIBER charred OBTAINED ARE SUBJECT TO HEAT TREATMENT AT A TEMPERATURE OF AT LEAST 900C FOR THE CARBON FIBER.