疏水缔合聚合物HAWP与芥酸酰胺丙基烯丙基溴化铵复合体系流变和界面性能研究  

Study on rheological and interfacial properties of a synergistic mixture of hydrophobically associating polymer HAWP and erucamidopropyl allyl ammonium bromide

作　　者：杨斌 Bin Yang(Science and Technology Management Department,Shengli Oilfield Company,SINOPEC,Dongying,Shandong 257000,China)

机构地区：[1]中国石化胜利油田分公司科技管理部,山东东营257000

出　　处：《日用化学工业（中英文）》2023年第4期365-372,共8页China Surfactant Detergent & Cosmetics

基　　金：国家重点研发计划项目(2018YFA0702400)。

摘　　要：针对疏水缔合聚合物增黏和界面活性提高能力有限的问题,疏水缔合聚合物复合增效体系被提出,基于疏水缔合聚合物HAWP与阳离子表面活性剂芥酸酰胺丙基烯丙基溴化铵(EDAA)复配构筑了疏水缔合聚合物复合增效体系EDHA,首先借助扫描电镜、流变仪以及环糊精包合法研究了疏水缔合聚合物复合增效体系的增黏机理,然后从流变性和界面性能两方面探究了pH值、NaCl质量浓度和温度对复合增效体系流变性和降低界面张力能力的影响。研究结果表明复合增效体系通过疏水缔合作用与静电吸引作用协同增效。复合增效体系的黏度和黏弹性随着pH值增加先增大后减小,界面张力先减小后增大;复合增效体系的黏度、黏弹性随着NaCl质量浓度的增大逐渐变小,界面张力先上升后下降。随着温度的增加,复合增效体系的黏度和黏弹性逐渐变小,界面张力逐渐增大。In view of the limited abilities of hydrophobically associating polymers to increase viscosity and improve interfacial activity,a synergistic system composed of a hydrophobically associating polymer and a cationic surfactant was proposed.In this work,the hydrophobically associating polymer HAWP and the cationic surfactant erucamidopropyl allyl ammonium bromide(EDAA)were mixed to construct the synergistic system(EDHA).The viscosity-increasing mechanism of the synergistic system was studied by scanning electron microscopy,rheometer and cyclodextrin inclusion method.The effects of pH,NaCl mass concentration and temperature on the rheological properties and the ability to reduce interfacial tension were also explored.The results showed that the synergism of the mixed system was based on hydrophobic association and electrostatic attraction.With the increase of pH,the viscosity and viscoelasticity of the synergistic system first increased and then decreased,and the interfacial tension first decreased and then increased.The viscosity and viscoelasticity of the synergistic system were decreased with the increase of NaCl mass concentration,and the interfacial tension was first increased and then decreased.The viscosity and viscoelasticity of the system were decreased and the interfacial tension was increased with the increase of temperature.

关 键 词：复合增效体系 流变性 界面张力 协同增效机理 

分 类 号：TQ423[化学工程] TE357[石油与天然气工程—油气田开发工程]