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Discussion of factors of effect of water washing on PAN precursor used as carbon fiber
Author(s): 
Pages: 31-33
Year: Issue:  5
Journal: HI-TECH FIBER & APPLICATION

Keyword:  碳纤维聚丙烯腈原丝水洗效果;
Abstract: 水洗是碳纤维用聚丙烯腈(PAN)原丝生产过程中的重要环节,其效果好坏将直接影响碳纤维强度的高低.实验结果表明:在选择共聚单体组分时,要充分考虑共聚单体时聚合物亲水性的影响,有利于提高水洗效果;聚合物相对分子质量过高,会影响水洗效果;纺丝液中总固含量过大会增加水洗难度;采用梯度水温,外加浸洗与喷淋相结合方式对碳纤维用PAN原丝的洗涤效果较好,水的用量不会太大;对PAN纤维多段牵伸后水洗效果较好.
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