Abstract Rheological characterization through capillary viscometry of molten polymers that slip at solid walls is quite a challenging task. In fact, it is based on an indirect measurement that introduces remarkable error amplifications, mainly because of the Mooney procedure. Sometimes these are so large that unphysical results are obtained. In this paper we study these issues analytically, using a particular power law fluid as a test model. Interestingly, it is found that there is dependence on the fluid characteristics, such as the shear thinning behavior. Two software programs are provided in the Mendeley Data Repository. One quantifies the error amplification, the other one can be used by interested researchers for properly designing the testing setup (e.g. the most convenient choice for the capillary diameters). In order to use the programs, though, the material constants of the fluid that is intended to be characterized must be known at least approximately.

中文翻译：

---

具有滑移的幂律流体毛细管粘度测量的误差放大

摘要 通过在固体壁上滑动的熔融聚合物的毛细管粘度测定法进行流变表征是一项非常具有挑战性的任务。事实上，它是基于间接测量，引入了显着的误差放大，主要是因为门尼程序。有时它们是如此之大以致于获得了非物理结果。在本文中，我们使用特定的幂律流体作为测试模型，对这些问题进行了分析研究。有趣的是，发现它依赖于流体特性，例如剪切稀化行为。Mendeley Data Repository 中提供了两个软件程序。一个量化误差放大，另一个可以被感兴趣的研究人员用于正确设计测试设置（例如最方便的毛细管直径选择）。为了使用这些程序，