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讨论了大庆减二线原油磺化后制得的石油磺酸盐ＰＳＤ－２与ＮａＯＨ．３３３０Ｓ聚合物组成的三元复合体系／大庆原油间的动态界面张力特性，对ＰＳＤ－２体系，ＰＳＤ－２－ＮａＯＨ体系与大庆原油间的动态界面张力特性进行的比较得知：ＰＳＤ－２体系，ＰＳＤ－２－ＮａＯＨ体系及三元复合体系与大庆原油间的界面张力值对时间有明显的依赖性。随着时间的增加，界面张力下降，大约在１５ｍｉｎ各体系界面张力达到极低值，然后，界面张力逐渐上升，在４５ｍｉｎ左右二元复合体系和三元复合体系又出现了第２个极低值。在１ｈ左右，界面张力达到稳态值。碱的加入使ＰＳＤ－２体系／大庆原油间的动态界面张力普遍降低。
The petroleum sulfonate PSD-2 and NaOH, which were obtained after sulfonation of crude oil from Daqing in the second line, were discussed. 3330S polymer composites / Daqing crude oil dynamic interfacial tension characteristics of the PSD-2 system, PSD-2-NaOH system and Daqing crude oil dynamic interfacial tension between the characteristics of the comparison: PSD-2 system , The interfacial tension between PSD-2-NaOH system and ternary composite system and Daqing crude oil has obvious dependence on time. With the increase of time, the interfacial tension decreased and the interfacial tension reached a very low value at about 15 min. Then, the interfacial tension gradually increased. At 45 min, the second extremely low value appeared in the binary and ternary systems . In about 1h, the interfacial tension reaches the steady state value. The addition of alkali reduced the dynamic interfacial tension between PSD-2 system and Daqing crude oil.