文章摘要
Al2O3纳米颗粒与表面活性剂对O/W乳状液稳定性的影响
Effect of Alumina Nanoparticle and Surfactant on the Stability of O/W Emulsion
  
DOI:10.19346./j.cnki.1000-4092.2017.04.021
中文关键词: 氧化铝  纳米流体  表面活性剂  乳状液  稳定性
英文关键词: alumina  nanofluids  surfactant  emulsion  stability
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作者单位
陈小榆,李原,谢欣彤,陈思佳 西南石油大学石油与天然气工程学院四川成都610500 
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中文摘要:
      为了提高原油乳状液的稳定性,研究了亲水和疏水两种氧化铝纳米颗粒在阴离子表面活性剂十二烷基苯磺酸钠(SDBS)、阳离子表面活性剂十六烷基三甲基溴化铵(CTAB)和非离子表面活性剂烷基酚聚氧乙烯醚(OP-10)中的分散稳定性,并用氧化铝纳米流体、液体石蜡和OP-10 制得O/W型乳状液,考察了亲水与疏水纳米颗粒和OP-10 对乳状液稳定性的影响。结果表明,表面活性剂类型与浓度对氧化铝纳米颗粒分散效果的影响较大,OP-10 的分散性较好。O/W乳状液的稳定性与纳米颗粒和表面活性剂密切相关。在一定浓度下,随着纳米颗粒和表面活性剂浓度增加油水界面张力降低,乳状液的稳定性增强;高浓度的纳米颗粒和表面活性剂会使油水界面张力和乳状液析水率增加,稳定性降低;0.3% OP-10 复配0.2%疏水氧化铝纳米颗粒形成的乳状液稳定性较好。与亲水氧化铝纳米流体相比,疏水氧化铝纳米流体具有更高的分散稳定性和更强的稳定乳状液的能力。图8参22
英文摘要:
      In order to improve the stability of crude oil emulsion,the dispersion stabilities of hydrophilic and hydrophobic alumina nanoparticles in anionic surfactant sodium dodecyl benzene sulfonate (SDBS),cationic surfactant cetyltrimethyl ammonium bromide(CTAB)and nonionic surfactant alkylphenol ployoxethylene ether(OP-10)were studied. O/W emulsion was prepared by alumina nanofluids,liquid paraffin and OP-10. The effects of hydrophilic and hydrophobic nanoparticles and OP-10 on emulsion stability were investigated. The results showed that the surfactant type and concentration had great influence on the dispersion of alumina nanoparticles,and the dispersibility of OP-10 was better. The stability of O/W emulsion was closely related to nanoparticle and surfactant. On a certain concentration,with increaseing concentration of nanoparticle and surfactant,the interfacial tension between oil and water decreased as well as the stability of emulsion enhanced. High concentration of nanoparticle and surfactant could increase the interfacial tension and water separation rate and decrease the stability. The emulsion composed of 0.3% OP-10 and 0.2% hydrophobic alumina nanoparticle had good stability. Compared with hydrophilic alumina nanofluids,hydrophobic alumina nanofluids exhibited higher dispersion stability and stronger ability to stabilize O/W emulsion.
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