CAJ | 학술논문

通过测定不同沥青质含量下，典型支链型嵌段聚醚破乳剂AE-1和直链型嵌段聚醚破乳剂SP169在不同质量浓度和温度下的界面张力、界面扩散热力学参数和界面扩张模量，研究了两种嵌段聚醚对油水界面性质的影响。实验结果表明， SP169破乳剂降低界面张力的能力更强；在温度与沥青质含量不变的情况下，SP169破乳剂的熵变小于AE-1破乳剂，表明SP169破乳剂分子在界面上的混乱度更小，组成了比AE-1破乳剂更为有序、紧凑的排列；AE-1破乳剂与沥青质形成的界面膜的扩张模量小于SP169破乳剂与沥青质所形成的界面膜的扩张模量，即加入AE-1破乳剂的油水界面膜的强度更弱。在温度65℃、含水率（以水的质量分数计）40%的条件下，AE-1破乳剂具有比SP169破乳剂更好的破乳性能。
통과측정불동력청질함량하，전형지련형감단취미파유제AE-1화직련형감단취미파유제SP169재불동질량농도화온도하적계면장력、계면확산열역학삼수화계면확장모량，연구료량충감단취미대유수계면성질적영향。실험결과표명， SP169파유제강저계면장력적능력경강；재온도여력청질함량불변적정황하，SP169파유제적적변소우AE-1파유제，표명SP169파유제분자재계면상적혼란도경소，조성료비AE-1파유제경위유서、긴주적배렬；AE-1파유제여력청질형성적계면막적확장모량소우SP169파유제여력청질소형성적계면막적확장모량，즉가입AE-1파유제적유수계면막적강도경약。재온도65℃、함수솔（이수적질량분수계）40%적조건하，AE-1파유제구유비SP169파유제경호적파유성능。
The influences of two demulsifiers,namely a typical heavy oil demulsifier(AE-1:branched chain type block polyether) and a conventional demulsifier(SP169:straight chain type block polyether),on the properties of oil-water interface were studied by determining interfacial tension(IFT),thermodynamic properties of interfacial diffusion and dilation modulus of the oil-water interface with the different asphaltene content in the oil-phase under different demulsifier concentration and temperature. The experimental results showed that SP169 was stronger than AE-1 in reducing IFT. Under the same temperature and asphaltene content,the total entropy change of SP169 was smaller than that of AE-1,which indicated that the SP169 molecules arranged more orderly and compactly. AE-1 and asphaltene could form interfacial membrane and its dilation modulus was less than that of the interfacial membrane formed by SP169 and asphaltene,that is,the strength of the former was weaker. Under the conditions of 65℃ and mass fraction of water 40%,the demulsibility of AE-1 was better than that of SP169.