【摘要】 以阳离子双子表面活性剂为主,通过阴/阳/非离子表面活性剂复配（阴/阳/非离子表面活性剂体积比为2∶1∶3）,获得了低界面张力体系ANO（界面张力为1.1×10-2 mN/m）。在高矿化度（60000mg/LNaCl+2000mg/LCaCl2）条件下,研究了纳米SiO₂对ANO界面张力与泡沫性能的影响。结果表明:纳米SiO₂对ANO界面张力并未产生明显的协同效应,但对ANO泡沫性能产生了较大的影响;70℃下,0.005%的纳米SiO₂显著增加了ANO的起泡稳泡性,在纳米SiO₂浓度大于0.1%时,体系呈现起泡性下降,稳泡性上升的趋势;80℃时已无法测定ANO起泡稳泡性,在加入了0.2%浓度的纳米SiO₂后,体系起泡高度为204mm,半衰期为35min。更多还原

【Abstract】 A low interfacial tension system ANO（the interfacial tension is 1.1×10-2 mN/m）was obtained by combining the anionic/cationic/nonionic surfactant（volume ratio is 2∶1∶3）.Under the condition of high salinity（60000 mg/L NaCl+2000 mg/LCaCl2）,the effect of nano-SiO₂ on the interfacial tension and foam properties of ANO was studied.The results show that nano-SiO₂ does not produce obvious synergistic effect on ANO interfacial tension,but has a great influence on ANO foam performance;At 70℃,0.005% nano-SiO₂ significantly increased the foam ability and foam stability of ANO.When the concentration of nano-SiO₂ was more than 0.1%,the system showed a decrease in foaming ability and a tendency to increase foam stability.At the temperature of 80℃,foaming ability and foaming stability can not be measured ANO,after adding 0.2% concentration of nano-SiO₂,foaming height of the compounded system is 204 mm,half-life is 35 min.更多还原