PRODUCTION OF SILICON CERAMIC FIBER OF HIGH PERFORMANCE BY RADIOACTIVE RADIATION

摘要

PURPOSE:To obtain the title fiber by irradiating an organosilicon polymer fiber with radioactive rays using an aliphatic unsaturated hydrocarbon and ammonia as a crosslinking accelerator, treating the product with heat under specific conditions into ceramics with reduced irradiation dose. CONSTITUTION:An organosilicon polymer is melt-spun into an organosilicon polymer fiber, irradiated the fiber with radioactive rays in the presence of an aliphatic unsaturated hydrocarbon and an activated gas such as ammonia as a crosslinking agent, then heat treated in a non-oxidative atmosphere in an nonoxidative atmosphere at 150 to 500 deg.C whereby the infusible, low oxygen content organosilicon polymer is obtained. The product is converted into ceramics in an inert atmosphere to give the subject fiber.