磁流變液的調製及黏度分析

The Fabrication and Viscosity Analysis of Magneteroheogical Fluid

朱宏仁(Hung-Jen Chu)

指導教授 ： 鍾清枝

國立臺北科技大學/機電學院/製造科技研究所/碩士(2009年)

https://doi.org/10.6841/NTUT.2009.00461

摘要

磁流變液是一種新興的智能材料，主要由載液、磁性微粒及界面活性劑所組成，外加磁場時會發生明顯的磁化效應，現今已廣泛地運用在機械、化工及光電產業中，但不普及。
本研究係利用黏度為＃1000的矽油為母體溶液，依照比例的不同分別添加油酸及葡萄糖起泡劑兩種界面活性劑，製成磁性流體。將所得的磁性流體置於不同的環境條件下，如磁場強度及溫度的變化等，進行靜置觀察及其黏度比較實驗。
實驗結果得知，使用葡萄糖起泡劑較油酸作為界面劑的穩定性佳，且添加的分散劑也有效能幫助磁粒在載液中的分散能力，進而提昇磁流變液的磁化效果，但並非都是愈多愈好，磁粒含量大於20%時，所添加的界面劑至少都需要大於2%，才能有較好的效果。實驗也得知當溫度升高至70℃後，反而會破壞磁液的流動性（工作性），且有蒸發的現象，因此機器使用上都應避免整體的溫度提高。

關鍵字

磁流變液 ； 磁性微粒 ； 界面活性劑 ； 黏度

並列摘要

Magnetorheological fluids (MRF) are a kind of novel smart material , which are the suspension composed of based fluids, magnetic micro-particles and surfactants; it has significant magnetorheological effect in additional magnetic field. It has widely applied in mechanics, chemical engineering, and opto-eletronics industry now.
In this study, the viscosity of silicone oil is the # 1000 for the main solution, in accordance with the different ratio of oleic acid and lauryl glucoside were made of magnetic fluid .
MRF obtained under different environmental conditions, such as magnetic field strength and temperature changes, and its viscosity as well as static observation of the experiment, according to the results to confer the effect of MRF and relationships, and obvious of the MRF on the characteristics of a variety of factors,
According to the experimental results confer that with lauryl glucoside more better than oleic acid with good stability of the interface agent and dispersing agent is also added to help the effective magnetic particles dispersed in the liquid contained in the capacity of MRF to enhance the effect of the magnetization, but not all the more , magnetic particle content greater than 20% of the added surfactants and dispersing agent interface requires at least 3 % more than in order to have better results. Experiment also was advised that when the temperature rises to 70 ℃ after, it will disrupts the flow of magnetic fluid (working), and there is the phenomenon of disappearing, so the machine should avoid the use of the overall temperature has increased.

並列關鍵字

Magnetorheological fluids (MRF) ； Magnetic micro-particles ； Surfactants ； Viscosity

參考文獻

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