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高密度煤油基磁性液體的制備及其性能表征
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北京交通大學(xué)

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TB34

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北京市自然科學(xué)基金(2222072) 中央基本科研業(yè)務(wù)費(fèi)項(xiàng)目(2022JBMC032) 載運(yùn)工具先進(jìn)制造與測(cè)控技術(shù)教育部重點(diǎn)實(shí)驗(yàn)室（北京交通大學(xué)）開放課題基金資助(M21GY1300050)


Preparation and characterization of high density kerosene based magnetic fluid
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Beijing Jiaotong University

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    摘要:

    采用化學(xué)共沉淀法，通過(guò)改變Fe3O4納米顆粒的生長(zhǎng)溫度、包覆環(huán)境pH、清洗、分散方式等工藝參數(shù)進(jìn)行對(duì)比實(shí)驗(yàn)，總結(jié)出Fe3O4納米顆粒在生長(zhǎng)階段、包覆階段、分散階段的最佳參數(shù)條件，優(yōu)化以往的制備工藝，使油酸包覆的磁性顆粒在煤油中的分散穩(wěn)定性得到提高。通過(guò)XRD、TEM、VSM等對(duì)樣品進(jìn)行表征，并使用旋轉(zhuǎn)流變儀對(duì)所制煤油基磁性液體的流變性能進(jìn)行分析，結(jié)果表明，改性后的Fe3O4納米顆粒平均粒徑約為14nm，呈現(xiàn)較為規(guī)則的球形，飽和磁化強(qiáng)度為60emu/g，可制備出質(zhì)量分?jǐn)?shù)可達(dá)60%的高密度煤油基磁性液體，與普通磁液相比，以此制備工藝得的高密度煤油基磁性液體在飽和磁化強(qiáng)度、抗氧化性等方面皆有較大提升，擁有更高的應(yīng)用價(jià)值。

    Abstract:

    Using the chemical coprecipitation method, the comparative experiments were carried out by changing the process parameters such as growth temperature, pH of coating environment, cleaning and dispersion mode of Fe3O4 nanoparticles. The best parameters and conditions of Fe3O4 nanoparticles in growth stage, coating stage and dispersion stage were summarized and the previous preparation process was optimized to improve the dispersion stability of oleic acid coated magnetic particles in kerosene. The samples were characterized by XRD, TEM and VSM and the rheological properties of the kerosene based magnetic fluid were analyzed by rotating rheometer. The results show that the average particle size of the modified Fe3O4 nanoparticles is about 14 nm, showing a regular sphere. The saturation magnetization of modified Fe3O4 nanoparticle is 60 emu/g and high-density kerosene based magnetic fluid with a mass fraction of 60% was prepared. Compared with ordinary magnetic fluid, the high-density kerosene based magnetic fluid obtained by this preparation process has a great improvement in saturation magnetization and oxidation resistance and has higher application value.

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韓世達(dá),崔紅超,張佳佳,李德才.高密度煤油基磁性液體的制備及其性能表征[J].稀有金屬材料與工程,2023,52(3):1113~1119.[Han Shida, Cui Hongchao, Zhang Jiajia, Li Decai. Preparation and characterization of high density kerosene based magnetic fluid[J]. Rare Metal Materials and Engineering,2023,52(3):1113~1119.]
DOI：10.12442/j. issn.1002-185X.20220162

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  • 收稿日期:2022-03-02
  • 最后修改日期:2022-06-20
  • 錄用日期:2022-07-12
  • 在線發(fā)布日期: 2023-04-07
  • 出版日期: 2023-03-24