Research on characterization method and influencing factors of sedimentation stability of magnetorheological fluid

IF 2.2 4区工程技术 Q2 MECHANICS

Korea-Australia Rheology Journal Pub Date : 2021-11-30 DOI:10.1007/s13367-021-0024-y

Yuqing Li, Yiping Luo, Ying Wang, Jiao Luo, Yameng Chen

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引用次数: 5

Abstract

The sedimentation stability of Magnetorheological fluid (MRF) is one of the research hotspots in the academic field of magnetorheological science. Excellent sedimentation stability is of great significance for the preservation and application of MRF. Given many traditional methods of characterization of sedimentation stability, this paper proposes a new method to characterize the sedimentation stability of MRF based on the change of shear yield stress during the sedimentation process of MRF. Then, the key components of the self-made MRF shear yield stress test device were introduced in detail, and three different surfactants containing dodecyl benzoate, polyethylene glycol and oleic acid were prepared. And then used the device to test their effects on the sedimentation stability of MRF. The results showed that oleic acid has the best effect on improving the sedimentation stability. Finally, the change law of shear yield stress of MRF in the next 90 days was predicted successfully by fitting experimental data based on the least square method. By comparing the test value and fitting value of 60–75 days, the error of the best fitting result were within 3%, this showed the reliability of the predicted results.

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磁流变液沉降稳定性表征方法及影响因素研究

磁流变液的沉降稳定性是磁流变学学术领域的研究热点之一。优良的沉降稳定性对磁流变液的保存和应用具有重要意义。针对许多传统的沉降稳定性表征方法，本文提出了一种基于MRF沉降过程中剪切屈服应力变化来表征MRF沉降稳定性的新方法。然后，详细介绍了自制磁流变液剪切屈服应力试验装置的关键部件，并制备了十二烷基苯甲酸酯、聚乙二醇和油酸三种不同的表面活性剂。然后利用该装置测试了它们对磁流变液沉降稳定性的影响。结果表明，油酸对提高沉淀稳定性的效果最好。最后，基于最小二乘法拟合实验数据，成功预测了未来90天内磁流变材料的剪切屈服应力变化规律。通过对比60-75天的试验值和拟合值，最佳拟合结果的误差在3%以内，说明预测结果的可靠性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Korea-Australia Rheology Journal 工程技术-高分子科学

CiteScore

2.80

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Korea-Australia Rheology Journal is devoted to fundamental and applied research with immediate or potential value in rheology, covering the science of the deformation and flow of materials. Emphases are placed on experimental and numerical advances in the areas of complex fluids. The journal offers insight into characterization and understanding of technologically important materials with a wide range of practical applications.