【摘要】 研究了含二氮杂萘酮结构聚芳醚砜酮 (PPESK)的 N-甲基吡咯烷硐 (NMP)溶液体系的粘度对浓度、温度和切变速率以及砜酮比的依赖性。结果表明 ,该溶液的粘度随剪切速率的提高而降低 ,为非牛顿流体 ;粘度随溶液浓度的增大而增大 ,与浓度的高次幂成正比 ,随砜酮比的增加而下降 ;温度对粘度的影响服从 Arrhenius公式。用该溶液纺制的纤维经测定力学性能较好。更多还原

【Abstract】 The dependences of rheological property on concentration, temperature, shearing rate and sulfone/ketone ratio were investigated for the solution of poly(phthalazine ether sulfone ketone) in N\|methyl 2\|pyrrolidone. The results show that the solution is a non\|Newtonian fluid. The influence of temperature on vicosity obeys Arrhenius equation. The relationship between viscosity and solution concentration can be described by power\|law equation:  η=AC 2 6446-2 7058 ,  where A is a contant, C stands for solution concentration. In addition, the viscosity decreases with the increases of ratio of sulfone/ketone of the polymer and shearing rate. Furthermore, the mechanical properties of the resulted fiber spun in the solution appeared fairly good.更多还原