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    • 60. 发明授权
    • Pitch-based activated carbon fiber
    • 基于沥青的活性炭纤维
    • US5795843A
    • 1998-08-18
    • US385378
    • 1995-02-07
    • Morinobu Endo
    • Morinobu Endo
    • D01F9/145B01J20/02
    • D01F9/145
    • There is provided an optically isotropic pitch-based activated carbon fiber which comprises having a large number of pores each with a radius of 0.15 to 2.5 nm and having a specific surface area of 500 m.sup.2 /g or more, the pores being distributed uniformly in both the surface layer part and the inner part of the fiber and allowed to three-dimensionally communicate with each other at least partially. The above activated carbon fiber is prepared by adjusting the size and density of the pores in the fiber by controlling the conditions for preparing the optically isotropic pitch, spinning the pitch and/or activation of the infusibilized or carbonized pitch-based fiber. The activated carbon fiber thus obtained is enhanced in adsorption efficiency without decrease in mechanical strength thereof and is widely used for a variety products in accordance with the kind of the substances to be adsorbed.
    • 提供了一种光学各向同性沥青基活性炭纤维,其包括具有大量的孔,每个孔的半径为0.15至2.5nm,比表面积为500m 2 / g以上,孔分布均匀 纤维的表面层部分和内部部分,并且至少部分地彼此三维地连通。 通过控制光学各向同性沥青的制备条件,纺丝沥青和/或不熔化或碳化的沥青类纤维的活化来调节纤维中的孔的尺寸和密度来制备上述活性炭纤维。 所得到的活性炭纤维的吸附效率提高,机械强度降低,并且根据被吸附物质的种类广泛用于各种产品。