采用一种价廉易得的S115型矿渣微粉和羧乙基纤维素、十二烷基苯磺酸钠协同稳定航煤-水乳状液，制备水包油型Pickering乳状液，室温下30 d后乳化指数大于95%，表明其具有很好的稳定性。采用粒度分析、Zeta电位、界面张力及流变性能测试等方法对稳定机理进行了研究，结果表明，矿渣颗粒吸附于油水界面与十二烷基苯磺酸钠协同形成单层或多层颗粒膜，增加了Zeta电位和黏弹性，降低了油水界面张力，导致其稳定性增加。将制备的Pickering乳状液用于稠油乳状液的降黏，结果比不含固体颗粒的普通乳状液具有更好的降黏效果。

An oil-in-water Pickering emulsion is prepared by synergistic stabilization of S115 slag powder,carboxyethyl cellulose and sodium dodecylbenzene sulfonate.The emulsion index of prepared Pickering emulsion exceeds 95% after 30 days at room temperature,showing a good stability.The stabilization mechanism of Pickering emulsion is studied by particle size analysis,Zeta potential,interfacial tension and rheological property test.The results show that slag particles are adsorbed on oil-water interface,and cooperated with sodium dodecylbenzene sulfonate to form single or multi-layer granular films,which increases Zeta potential and viscoelasticity but decreases oil-water interfacial tension,resulting in an increased stability.The Pickering emulsion exhibits better viscosity reduction effect than ordinary emulsion without solid particles.

朱志强(1992-),男,硕士研究生,从事油田化学方向的研究,798386995@qq.com