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用炭黑政性聚丙烯腈原丝，制得了富含中孔的活性炭纤维，研究了它对大分子物质VB12的吸附性能。
Activated carbon fibers rich in mesopores were obtained by using carbon black polyacrylonitrile as raw material, and its adsorbability to macromolecular substance VB12 was studied.