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化工学报  2015 

利用双螺杆挤出机溶解聚丙烯腈

DOI: 10.11949/j.issn.0438-1157.20141720, PP. 1970-1975

Keywords: 双螺杆,聚丙烯腈,溶解,化学反应器,设计

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Abstract:

为了提高生产效率,简化操作步骤,并制得质量稳定的高黏均分子量(Mη)聚丙烯腈(PAN)纺丝原液,研究了利用双螺杆挤出机溶解PAN的新方法。二阶螺杆采用T形搭配方式,并在出料口加装过滤装置。溶剂的选择在PAN溶解理论的基础上综合考虑了不同溶剂的溶解能力,找到了适合螺杆溶解要求的混合溶剂。同时将制得的溶液利用干喷湿纺工艺进行纺丝,得到线密度小、高强度的原丝,以验证此体系的可靠性。结果表明此溶解方式可以满足高性能PAN原丝的纺丝要求,同时产出溶液质量稳定且效率更高。

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