Abstract This paper is devoted to the analysis of the rheological properties of polysulfone solutions in N-methylpyrrolidone, which are an intermediate stage in preparing lithium-ionic batteries. The viscosity of the solutions has been measured in wide ranges of shear rate, temperature, and concentration. The crucial role of water in measuring the rheological properties of solutions has been observed and avoided. The solutions under study are Newtonian liquids, but they demonstrate the elasticity at moderately high concentrations. The concentration dependence of viscosity is very strong, and the threshold was found where the viscosity grows unlimitedly due to the transition of the solution to the gel-like state. Temperature dependences of viscosity are described by the Arrhenius-type equation with the activation energy increasing along with an increase in the polymer concentration in solutions.

中文翻译：

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用于锂离子电池技术的聚砜-N-甲基吡咯烷酮溶液的流变学

摘要 本文致力于分析聚砜溶液在 N-甲基吡咯烷酮中的流变特性，这是制备锂离子电池的中间阶段。已在广泛的剪切速率、温度和浓度范围内测量溶液的粘度。已经观察到并避免了水在测量溶液流变特性方面的关键作用。所研究的溶液是牛顿液体，但它们在中等高浓度下表现出弹性。粘度的浓度依赖性非常强，并且发现由于溶液向凝胶状状态的转变，粘度无限增长的阈值。