Influence of Oleic and Lauric Acid on the Stability of Magnetorheological Fluids

Influence of Oleic and Lauric Acid on the Stability of Magnetorheological Fluids
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油酸和月桂酸对磁流变液稳定性的影响

DOI:
10.4283/jmag.2015.20.3.317
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发表时间:
2015-09
影响因子:
0.5
通讯作者:
Xu, Ruizhen
Xu, Ruizhen
中科院分区:
材料科学4区
文献类型:
--
作者:
Huang, Yuehua;Jiang, Yuhuan;Yang, Xiongbo;Xu, Ruizhen

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本文介绍了一种基于硅油分散铁微粒的磁流变液。通过向悬浮液中添加不同比例的油酸和月桂酸作为表面活性剂来对铁颗粒进行改性。发现月桂酸降低MRF的稳定性,并且更多的月桂酸导致更高的沉降速率。进一步的研究表明,月桂酸的形成和结构可能导致微米级颗粒的沉降。同时,随着外场从0 mT增加到400 mT,磁流变液的电阻从6000 MΩ以上下降到190 M Ω。
In this paper, magnetorheological fluids (MRFs) based on micro-sized iron particles dispersed in silicone oil are presented. The iron particles are modified by adding different ratios of oleic acid and lauric acid as surfactants to the suspensions. Lauric acid was found to reduce the stability of the MRFs, and more lauric acid results in a higher rate of sedimentation. Further study showed that the formation and structure of lauric acid may result in the sedimentation of micrometer-sized particles. Meanwhile, the electro-resistance of MRF in this paper shows a decrease from beyond 6000 MΩ to 190 Ω with an increase in the external field from 0 mT to 400 mT.
DOI: --
发表时间: 2004
期刊: --
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