| 摘要 |
PURPOSE:To obtain the title fibers which are used as an adsorbent, a catalyst carrier, or a condenser, because of its high strength, durability and excellent adsorption and desorption properties by subjecting an optically anisotropic pitch as a core component and an isotropic pitch as a sheath component to conjugate spinning, preoxidizing and activating the fibers. CONSTITUTION:An optically anisotropic pitch or a pitch which can be converted into optically active form with slight heat-treatment is used as a core component, while an isotropic pitch is used as a sheath component to effect conjugated spinning to give a conjugated fiber. The fibers are preoxidized under such conditions that the sheath component is made infusible and activated to give the subject fiber which is composed of the core which has substantially no pores and the sheath having pores activated to absorb gases. |
