| 摘要 |
PURPOSE:To produce a filament bundle of activated carbon having excellent tear strength and large surface area, by intertwining a filament bundle of flame- resistant fiber prepared by oxidizing an acrylonitrile filament bundle, and activating the intertwined bundle. CONSTITUTION:A filament yarn composed of 500-100,000 filaments having a fineness of 0.1-3d and prepared from polyacrylonitrile or a copolymer of >=85wt% of acrylonitrile and a vinyl monomer such as methyl acrylate, methyl acetate, acrylamide, itaconic acid, etc., is oxidized in air or in an oxidizing atmosphere at 200-300 deg.C for 10-200min. The resultant filament bundle of flame-resistant fiber having a density of 1.35-1.45g/cc is moistened with water, intertwined with jet air stream, and activated at 500-1,200 deg.C in the presence of CO2, steam, etc. to obtain an activated carbon filament bundle having a tear strength of 2-40g and a surface area of >=300m<2>/g.
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