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首页> 外文会议>Leeds-Lyon Symposium on Tribology; 19990914-17; Leeds(GB) >Influence of grease composition on its structure and its rheological behaviour
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Influence of grease composition on its structure and its rheological behaviour

机译：润滑脂组成对其结构和流变行为的影响

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摘要

The aim of this work is to show the correlation between grease rheological behaviour and its composition (base oil and soap natures, presence of additives) and its structure. A rheological investigation was conducted on ten lubricants under the controlled stress and the controlled rate modes. The results, obtained over different time intervals, show that grease behaves like a non-Newtonian viscoelastic material, with a narrow linear domain. As for the microstructure, soap and base oil nature are the main parameters governing the rheological behaviour. However, we saw that the presence of additives has a direct influence on the grease flow properties, especially when greases are submitted to low shear stresses or shear rates.
机译：这项工作的目的是显示润滑脂流变行为与其组成（基础油和肥皂的性质，添加剂的存在）及其结构之间的相关性。在受控应力和受控速率模式下，对十种润滑剂进行了流变学研究。在不同时间间隔上获得的结果表明，润滑脂的行为类似于非牛顿粘弹性材料，具有狭窄的线性域。至于微观结构，肥皂和基础油的性质是控制流变行为的主要参数。但是，我们发现添加剂的存在直接影响润滑脂的流动性能，特别是当润滑脂承受低剪切应力或低剪切速率时。

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