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An investigation of the elastic properties of viscoelastic clusters of particles: A comparison between two methods
Polymer Engineering and Science ( IF 3.2 ) Pub Date : 2021-02-22 , DOI: 10.1002/pen.25660 Alexander Kolomiets 1 , Tomas Jirout 1
Polymer Engineering and Science ( IF 3.2 ) Pub Date : 2021-02-22 , DOI: 10.1002/pen.25660 Alexander Kolomiets 1 , Tomas Jirout 1
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Most industrial process lines involve mixing complex dispersions, which can include non‐Newtonian liquids and viscoelastic particles. Knowledge of the parameters of these components may provide a key for understanding how dispersions are formed and how equipment should be designed. One parameter is the shear modulus, which describes the ability of particles to resist mechanical stresses. This parameter may play the main role in the mixing process, when a dispersion is formed by the mechanical influence of a rotor (slice or shear in a rotor‐stator mixer). In this work, two methods were chosen for measuring the shear modulus: the evaluation method, based on the Warner‐Bratzler cut test, and the oscillatory method. Both methods were used for measuring viscoelastic clusters of particles, and the results were adjusted for the purposes of the comparison. The comparison shows that the shear modulus values obtained from Warner‐Bratzler are higher than the values obtained from the oscillatory test for the same conditions. This difference can be explained by differences in the mechanical processes during the experiments.
中文翻译：
颗粒粘弹性团簇的弹性特性研究：两种方法的比较
大多数工业生产线都涉及混合复杂的分散体，其中可能包括非牛顿液体和粘弹性颗粒。这些组件的参数知识可以为理解如何形成分散体以及如何设计设备提供关键。一个参数是剪切模量，它描述了颗粒抵抗机械应力的能力。当分散体是由转子的机械影响（转子-定子混合器中的切片或剪切）形成时，此参数可能在混合过程中起主要作用。在这项工作中，选择了两种方法来测量剪切模量：基于Warner-Bratzler剪切试验的评估方法和振荡方法。两种方法都用于测量颗粒的粘弹性簇，并且为了比较的目的调整了结果。比较表明，在相同条件下，从Warner-Bratzler获得的剪切模量值高于从振动测试获得的值。这种差异可以通过实验过程中机械过程的差异来解释。
更新日期：2021-02-22
中文翻译：
颗粒粘弹性团簇的弹性特性研究：两种方法的比较
大多数工业生产线都涉及混合复杂的分散体，其中可能包括非牛顿液体和粘弹性颗粒。这些组件的参数知识可以为理解如何形成分散体以及如何设计设备提供关键。一个参数是剪切模量，它描述了颗粒抵抗机械应力的能力。当分散体是由转子的机械影响（转子-定子混合器中的切片或剪切）形成时，此参数可能在混合过程中起主要作用。在这项工作中，选择了两种方法来测量剪切模量：基于Warner-Bratzler剪切试验的评估方法和振荡方法。两种方法都用于测量颗粒的粘弹性簇，并且为了比较的目的调整了结果。比较表明，在相同条件下，从Warner-Bratzler获得的剪切模量值高于从振动测试获得的值。这种差异可以通过实验过程中机械过程的差异来解释。
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