Development of tribology equipment to study dynamic processes
Development of tribology equipment to study dynamic processes
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DOI：
10.1016/j.jfoodeng.2012.08.030
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发表时间：
2013-02-01
影响因子：
5.5
通讯作者：
Bakalis, Serafim
中科院分区：
文献类型：
--
作者：
Mills, Tom;Norton, Ian T.;Bakalis, Serafim
为了获得口腔过程的工程理解，摩擦学设备已被修改，以允许在动态过程中的润滑研究。作为一个模型动态过程，凝胶样品已被结构化剪切下创建流体凝胶（浓缩凝胶颗粒系统），通过使用温度曲线。这些温度曲线与流变仪中可用的范围相当，并在本文中进行了比较。随着聚合物或KCl浓度的增加，起始温度和粘度或润滑变化程度增加的总体模式已经呈现。然而，在这些情况下，材料的润滑性能不能通过与流变学数据进行比较来完全预测。在两台设备中生产后，研究一系列样品的粘度，如果没有发现差异，则假设产生了相似的颗粒，在低浓度样品存在微小差异的情况下，与摩擦学中窄间隙尺寸相关的高剪切力表明产生了非常小的颗粒，导致粘度降低。(C)2012爱思唯尔有限公司保留所有权利。
Aiming to obtain an engineering understanding of oral processes, tribology equipment has been modified to allow the study of lubrication during a dynamic process. As a model dynamic process, gel samples have been structured under shear to create fluid gels (concentrated gel particulate systems) by using temperature profiles. These temperature profiles are comparable to the ranges available in a rheometer and are compared herein.An overall pattern has been presented of increasing onset temperature and extent of viscosity or lubrication change with increasing polymer or KCl concentration. However lubrication properties of the material cannot be completely predicted by comparison to rheology data in these cases. Investigating viscosity across a range of samples after production in both pieces of equipment, where no differences were found it is assumed similar particles were produced, in the case of small differences for low concentration samples the high shears associated with the narrow gap sizes in tribology are suggested to have created very small particles leading to a viscosity reduction. (C) 2012 Elsevier Ltd. All rights reserved.