摘要
以N-月桂酰基谷氨酸钾(KLAD)、芥酸钾(KEU)及两者复合体系(KAU)为研究对象,分别考察了KCl及不同有机反离子对KLAD、KEU及KAU水溶液性能的影响,优化出KLAD/KCl、KEU/苄基三丙基氯化铵(BTAC)及KAU/BTAC/KCl 3种黏弹性蠕虫状胶束体系.通过表观黏度法研究了3种体系的耐温及耐剪切性能,并对各体系的破胶性能及携砂性能进行了评价.结果表明,T=100℃时,KLAD/KCl及KEU/BTAC体系的表观黏度(η_a)仅为19.2和37.7 mPa·s,而KAU/BTAC/KCl体系的η_a高达82.5 mPa·s;T=100℃且连续剪切60 min后,KLAD/KCl及KEU/BTAC体系的η_a分别降至14.0 mPa·s和19.3 mPa·s,而KAU/BTAC/KCl体系仍保持在52.9 mPa·s以上.携砂比为10%时,3种体系的沉降速度分别为0.294,0.113及0.067 cm·min^(-1).KAU/BTAC/KCl体系耐较高温度、耐剪切,携砂性能优越.有机反离子BTAC与无机反离子KCl对蠕虫状胶束具有较高表观黏度产生了协同效应.
The effect of different counterions,including inorganic salt（KCl） and different organic salts,on the properties of solutions of potassium N-dodecanoyl glutamate（KLAD）,potassium erucate（KEU） and their mixed system（KAU） was studied respectively,then three viscoelastic wormlike micelles systems were obtained,including KLAD/KCl,KEU/benzyltripropylammonium chloride（BTAC） and KAU/BTAC/KCl.The temperature（T） and shear resistance of the three systems were compared by viscosimetry method,and their sandcarrying performance and gel breaking property were also investigated.The results showed that the apparent viscosity（η_a） of systems of KLAD/KCl and KEU/BTAC were 19.2 mPa · s and37.7 mPa · s at 100 ℃,but the η_a of KAU/BTAC/KCl solution was up to 82.5 mPa · s.After shearing 60 min incessantly at 100 ℃,the η_a of solutions of KLAD/KCl and KEU/BTAC decreased to 14.0 mPa · s and 19.3 mPa · s respectively,however,the η_a of KAU/BTAC/KCl solution still maintained at 52.9 mPa · s.When the sand carrying ratio was 10%,the sedimentation rates of the seeds in the three systems were about 0.294 cm · min～（-1）,0.113 cm ·min～（-1） and 0.067 cm · min～（-1） at 30 ℃,respectively.For all systems,the viscosity of the gel breaking liquid without residue decreased below 5 mPa · s within 2 hours.The better temperature and shear resistance of KAU/BTAC/KCl system indicated that BTAC and KCl produced a synergistic effect on the wormlike micelles with high viscosity.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2014年第6期655-660,共6页
Transactions of Beijing Institute of Technology
