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氨水添加方式對(duì)硅油基磁流體性能的影響
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北京科技大學(xué),北京科技大學(xué),北京科技大學(xué),北京科技大學(xué)

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TQ138.1

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國家自然科學(xué)基金


Influence of adding ammonia method on the property of silicon-oil-based magnetic fluid
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University of Science and Technology Beijing,University of Science and Technology Beijing,University of Science and Technology Beijing,University of Science and Technology Beijing

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    摘要:

    本文采用化學(xué)共沉淀法制備納米Fe3O4磁顆粒，用油酸鈉作表面活性劑對(duì)其進(jìn)行表面改性，用硅油作為載液制備出硅油基磁流體。本文重點(diǎn)研究了氨水的不同添加順序及氨水的不同添加速度對(duì)磁流體性能的影響，通過磁性能測(cè)試、觀察磁流體靜置后的沉降現(xiàn)象以及透射電鏡來對(duì)磁流體進(jìn)行表征，結(jié)果表明先加氨水再加油酸鈉制備的磁流體分散穩(wěn)定性好，其飽和磁化強(qiáng)度為11.4emu/g，進(jìn)一步研究了以10ml/min速度滴加氨水再加油酸鈉，得到的磁流體分散穩(wěn)定性較好，其飽和磁化強(qiáng)度為14.3emu/g。

    Abstract:

    In this paper, the Fe3O4 magnetic nanoparticles were prepared by coprecipitation method with sodium oleate as surfactant modification, and magnetic fluid was prepared with silicon oil as the carrier. The influence of different adding ammonia orders and different adding speed on the property of magnetic fluid was studied. The Fe3O4 magnetic fluid was tested by VSM, the settlement after standing and TEM. The reslut showed that when the ammonia added before the sodium oleate, the dispersivity of the magnetic liquid is the best and the saturation magnetization is 11.4emu/g. Furthermore, with dripping ammonia in a speed of 10ml/min before adding the sodium oleate, the dispersivity of the magnetic liquid is better and the saturation magnetization is 14.3emu/g.

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趙子粉,邵慧萍,鄭航,吳勝江.氨水添加方式對(duì)硅油基磁流體性能的影響[J].稀有金屬材料與工程,2016,45(6):1609~1614.[zhao zi fen, shao hui ping, zheng hang, wu sheng jiang. Influence of adding ammonia method on the property of silicon-oil-based magnetic fluid[J]. Rare Metal Materials and Engineering,2016,45(6):1609~1614.]
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  • 收稿日期:2014-05-23
  • 最后修改日期:2015-07-20
  • 錄用日期:2015-09-07
  • 在線發(fā)布日期: 2016-10-08
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