日用化学工业（中英文）2025，Vol.55Issue(9)：1129-1136,8.DOI:10.3969/j.issn.2097-2806.2025.09.006
沥青质、胶质和石油酸对乳状液相变与界面性质的影响研究
Effects of asphaltene,resin,and petroleum acid on the phase transition and interfacial properties of emulsions
摘要
Abstract
The effects of asphaltene(AS),resin(RE)and petroleum acid(PA)in crude oil on the interfacial behavior of emulsions were investigated.The interfacial tension,dilational modulus,phase transition points and droplet size distribution were analyzed.The results showed that,among the components studied,AS exhibited the highest interfacial tension(25.1 mN/m),followed by RE(23.7 mN/m),while PA exhibited the lowest interfacial tension(4.8 mN/m).The fast adsorption kinetics of PA at the oil-water interface significantly decreased the interfacial tension,highlighting its strong surface activity.AS exhibited the highest dilational modulus(38.7 mN/m),which strengthened the elasticity of the oil-water interfacial film and postponed the phase transition point.In contrast,PA,with a low dilational modulus of 6.1 mN/m,reduced the emulsion stability by decreasing interfacial elasticity and promoting droplet coalescence,leading to an earlier phase transition at water content of 60%.The synergism between RE and AS significantly increased the viscosity and stability of the emulsion,whose water content at the phase transition point was between 70%and 80%.This work might provide theoretical basis for improving oil recovery efficiency and modulating emulsion stability in oilfield applications.关键词
乳状液/界面张力/扩张模量/相变点/乳状液粒径Key words
emulsion/interfacial tension/dilational modulus/phase transition point/emulsion droplet size分类
能源科技引用本文复制引用
汤超,关娇娇,张守平,蔡文良,林于廉,谢水祥,向云飞..沥青质、胶质和石油酸对乳状液相变与界面性质的影响研究[J].日用化学工业（中英文）,2025,55(9):1129-1136,8.基金项目
重庆水利电力职业技术学院重大科研专项基金项目(KZD202202) （KZD202202）
重庆市教委科学技术研究重点项目(KJZD-K202403802) （KJZD-K202403802）
