许建国

• 1:中国石油吉林油田分公司油气工程研究院

摘要(Abstract)：

为深入了解延展型表面活性剂降低界面张力(IFTs)的作用机制,采用旋转滴法研究延展型表面活性剂与正构烷烃间的界面张力,并考察不同盐度条件下温度对延展型表面活性剂降低界面张力能力的影响。结果表明:由于聚氧丙烯(PO)基团的存在,延展型表面活性剂疏水基团尺寸增大,降低界面张力能力较强,其与辛烷的界面张力达到0.01 mN/m数量级;低盐度条件下,温度升高会进一步增加疏水基团的尺寸,有利于界面张力的降低,温度从30℃升高至90℃,界面张力降低幅度约为1个数量级;盐度增大,离子头尺寸减小,延展型表面活性剂对适宜碳数的油相能够达到超低界面张力,此时升高温度主要影响延展型表面活性剂的亲水-亲油能力,但对界面张力最低值影响不大。

关键词(KeyWords)： 延展型表面活性剂;界面张力(IFT);盐度;温度;分子尺寸

Abstract:

Keywords:

基金项目(Foundation): 十三五国家科技重大专项资助项目（2016ZX05046）;; 国家重点研发计划资助项目（2018YFE0196000）

作者(Author): 许建国

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