中文摘要：

以Courtaulds纤维为原料,采用连续化碳纤维生产线制备出稳定的预氧纤维,通过连续化活化炉进行预碳化和水蒸气物理一步活化,制备出具有高吸附性能和高拉伸强度的聚丙烯腈基活性碳纤维（PAN-ACFs）丝束。借助比表面积（BET）、广角X射线衍射（WAXD）、力学性能和碘吸附等表征测试手段研究了水蒸气量对PAN-ACFs孔结构及力学性能的影响。结果表明：在适当的活化时间、活化温度下,逐步增加水蒸气的流量,活性碳纤维的吸附能力先快速增大,而后稳定,最后再缓慢地增加;纤维的拉伸强度呈现出先增大后减小的变化趋势;当水蒸气流量为1 g/min,起始的温度为650℃,高温区为850℃,活化时间为20 min时,所制备的PAN-ACFs具有相对较高的吸附性能、力学性能和碳化收率。

英文摘要：

Polyacrylonitrile-based activated carbon fibers（PAN-ACFs） have been prepared using a continuous production line with simultaneous carbonization and steam activation. The as-prepared PAN-ACFs have outstanding adsorption performance and high tensile strength. The effects of steam on the structure and mechanical properties of PAN-ACFs were studied by wide angle X-ray diffraction（WAXD）,specific surface area（BET） measurements,and by measuring their mechanical properties and iodine adsorption. The results showed that with the gradual increase in the amount of steam,the adsorption capacity of PAN-ACFs increased quickly first,then remained stable for a certain period,and then increased slowly. PAN-ACFs with high adsorption properties,mechanical properties and carbonization yield were prepared when the amount of steam was 1 g/min,the initial temperature was 650 ℃,the high temperature zone was 850 ℃,and the activation time was 20 min.