甜菜碱氟碳表面活性剂的合成及表面润湿性能  

Synthesis and surface wettability of betaine fluorocarbon surfactants

作　　者：汪春阳 谢水祥 冯永东 李兴春 唐伟[5] 唐善法[1] 程远鹏[1] 胡九江 WANG Chunyang;XIE Shuixiang;FENG Yongdong;LI Xingchun;TANG Jun;TANG Wei;CHENG Yuanpeng;HU Jiujiang(School of Petroleum Engineering, Yangtze University, Wuhan 430100, China;State Key Laboratory of Petroleum Pollution Control, Beijing 102206, China;CNPC Research Institute of Safety and Environmental Technology, Beijing 102206, China;Exploration Department, PetroChina Southwest Oil & Gasfield Company, Chengdu 610500, China;Shale Gas Exploration and Development Department, CNPC Chuanqing Drilling Engineering Company Limited, Chengdu 610000, China)

机构地区：[1]长江大学石油工程学院,武汉430100 [2]石油石化污染物控制与处理国家重点实验室,北京102206 [3]中国石油安全环保技术研究院有限公司,北京102206 [4]中国石油西南油气田公司勘探事业部,成都610500 [5]川庆钻探工程有限公司页岩气项目经理部,成都610000

出　　处：《中国科技论文》2022年第4期463-468,共6页China Sciencepaper

基　　金：国家自然科学基金资助项目(51474035);中石油直属院所基础科学研究和战略储备技术研究基金资助项目(2017D-5008)。

摘　　要：以N,N-二甲基-1,3-丙二胺、全氟烷基磺酰氟和氯乙酸钠,合成了3种甜菜碱氟碳表面活性剂FSC-m(m=4,6,8)。通过傅里叶变换红外光谱(Fourier transform infrared spectroscopy,FTIR)、核磁共振谱(^(1)H NMR和^(19)F NMR)对目标产物进行了结构表征,并对其表面活性和在石英砂上的润湿性进行了评价。结果表明:FSC-m具有优异的表面活性和很低的临界胶束浓度(critical micelle concentration,CMC);FSC-m对石英砂润湿性影响很大,可使石英砂与油、水相接触角分别由18.9°和9.2°增大至90.3°和91.4°,能显著降低砂岩表面的自由能,可将其应用于调控油藏润湿性,具有广阔的应用前景。A series of new betaine fluorocarbon surfactants(abbreviated as FSC-m)were synthesized by N,N-dimethyl-1,3-propane diamine,perfluoroalkyl sulfonyl fluoride,and sodium chloroacetate.The novel surfactants were characterized by Fourier transform infrared spectroscopy(FTIR),^(1)H NMR and ^(19)F NMR.The surface activeness of those surfactants at the air-water interface and wettability on quartz sand were investigated.The results show that the novel surfactants have excellent surface and low critical micelle concentration(CMC).FSC-m dramatically influences the wettability of quartz sand,which can increase the oil drop contact angle from 18.9°to 90.3°and the water drop contact angle from 9.2°to 91.4°,thus significantly reducing the free energy of the sandstone surface.It can be used to control reservoir wettability and have a broad application prospect.

关 键 词：甜菜碱氟碳表面活性剂 表面活性 润湿性 表面能 

分 类 号：TQ423.4[化学工程]