可分解交联聚合物微球KFW的制备及性能  

Preparation and Characterization of Labile Crosslinked Polymer Microspheres KFW

作　　者：于小荣 蒲万芬 陈大钧[1] 朱强娟 雷鑫宇[3] 

机构地区：[1]西南石油大学化学化工学院,四川成都610500 [2]油气藏地质及开发工程国家重点实验室,四川成都610500 [3]中国科学院成都有机化学研究所,四川成都610041

出　　处：《精细化工》2015年第1期87-92,共6页Fine Chemicals

基　　金：国家科技重大专项专题(2011ZX05049-004-004)~~

摘　　要：以丙烯酰胺(AM)、2-甲基-2-丙烯酰胺基丙磺酸(AMPS)、α-甲基苯乙烯(HM)为原料,采用反相悬浮法合成了可分解交联聚合物微球KFW,合成条件为:单体质量分数为25%,油水体积比1.2∶1,单体配比m(AM)∶m(AMPS)∶m(HM)=20∶5∶0.2,J-1交联剂质量分数3.8%(以单体总质量计),乳化剂质量分数为7%,反应温度为40℃。红外光谱分析结果证实合成产物为P(AM-AMPS-HM)。KFW分解性能实验结果表明,在水分散体系中,KFW黏度随矿化度增加而降低,其中,Ca2+在一定加量范围内,有利于体系的增黏作用。温度越高,KFW分解时间越短,体系黏度越高。J-1加量增大,KFW分解时间延长,体系增黏不明显。油相分散体系中,KFW不能使油相增黏。SEM结果表明,KFW分解过程为先溶胀后溶解。双并联填砂管实验结果表明,KFW可有效改善地层的非均质性,扩大波及体积,提高采收率,兼具调剖和驱油双重功能。Labilecrosslinked polymer microspheres KFW were prepared by inverse suspension polymerization using acrylamide（AM）,2-methyl-2-acrylic amide propylsulfonic acid（AMPS）,and alpha methyl styrene（HM） as monomers.The synthesis conditions were as follows：monomer was25%,m（AM） ∶ m（AMPS） ∶ m（HM） was 20∶5∶0.2,V（oil） ∶ V（water） was 1.2 ∶1,crosslinker J-1 was3.8%,emulsifier was 7%,and temperature was 40 ℃.The structure of KFW was confirmed by Infrared spectroscopy.Decomposition experiment shows that,in water dispersion system,the viscosity decreased as the mass fraction of salt increased,though within a certain quantity of Ca^2 ＋.The decomposition time of KFW shortened and the viscosity increased with the temperature increasing.The decomposition time of KFW was extended when the dosage of crosslinker J-1 increased.In the oil dispersion system,KFW has little thickening action in oil phase.SEM results show that the decomposition process of KFW is from swelling to dissolving.Double parallel sand filling tube results show that the KFW is characterized with both profile control and oil displacement which can effectively improve the formation heterogeneity,enlarge sweep volume and improve oil recovery.

关 键 词：交联聚合物微球 反相悬浮聚合 分解性能 提高采收率 油田化学品与油品添加剂 

分 类 号：TQ314.2[化学工程—高聚物工业]