杂环芳香族聚酰胺纺丝原液孔口胀大效应的研究  

Die-swell behavior of heterocyclic aromatic polyamide spinning solution

作　　者：胡诚成[1] 陈蕾[1] 顾如茜[1] 于俊荣[1] 诸静[1] 胡祖明[1] 

机构地区：[1]东华大学纤维材料改性国家重点实验室,上海201620

出　　处：《合成纤维工业》2012年第4期16-19,共4页China Synthetic Fiber Industry

基　　金：国家"973"计划资助项目(2011CB606103);纤维材料改性国家重点实验室重大研究课题资助项目(LZ0914)

摘　　要：采用摄影法研究了杂环芳香族聚酰胺纺丝原液的孔口胀大效应。结果表明:杂环芳香族聚酰胺纺丝原液在喷丝头挤出时会发生孔口胀大现象,在纺丝原液比浓对数黏数为4.20 dL/g,温度20～65℃,挤出压力0.25～0.45 MPa,喷丝孔长径比为1～7,滤布层数为1的条件下,纺丝原液的孔口胀大比为1.089 0～1.344 8;纺丝原液的孔口胀大比随着原液温度的上升、毛细管长径比的增大和滤布层数的增加呈逐渐减小趋势,随着聚合物相对分子质量的增大和挤出压力的增加呈逐渐增大趋势;纺丝原液的孔口胀大活化能随挤出压力的增加而增大。The die-swell behavior of heterocyclic aromatic polyamide spinning solution was studied by photography. The results showed that the die-swell behavior of heterocyclic aromatic polyamide spinning solution occurred as extruded.from spinneret; the die-swell ratio of the spinning solution was 1. 089 0 -1. 344.8 under the conditions as followed： logarithmic viscosity number of spinning solution 4.20 dL/g, temperature 20 - 65 ℃, extrusion pressure 0.25 - 0.45 MPa, length-diameter ratio of spinneret hole 1 - 7, filter cloth layer number 1. The die-swell ratio of the spinning solution gradually decreased while increasing the spinning solution temperature, capillary length-diameter ratio and filter cloth layers and gradually increased while increasing the relative molecular mass of polymer and extrusion pressure; and the die-swell activation energy of the spinning solution increased with the increase of extrusion pressure.

关 键 词：杂环芳香族聚酰胺 纺丝原液 孔口胀大 杂环芳纶 摄影法 

分 类 号：TQ340.6[化学工程—化纤工业]