高浓度PAN/DMSO原液粘度特性及纺丝工艺性的研究

在研究了聚丙烯腈／二甲基亚砜纺丝溶液粘度特性的基础上，初步探讨了纺丝液中ＰＡＮ的质量分数与纤维的可牵伸性及致密性的关系。

Study on the viscosity and spinnability of PAN/DMSO solution

In this paper, the influences of the concentration and the drawing property of PAN/DMSO solution on the surface structure of the fiber were investigated on the basis of the study of the viscosity of PAN/DMSO solution. It turned out that the relation between the viscosity and temperature of PAN/DMSO solution followed an Arrhenius type equation, that the viscosity increased accordingly with the increase of molecular weight and concentration, and that the relation between the viscosity and concentration of the solution was an indices curve. It was also found that the drawing ratio during coagulation and the total drawing ratio increased with the increase of concentration of the solution. The study showed that the surface wrinkles of wet spinning fiber would become shallower with higher concentration of the spinning solution and yet it would not disappear when adopting wet spinning method.