摘要
以反相悬浮聚合法可控制备了大粒径膨胀微球。研究了搅拌速度、分散剂用量、交联剂含量、偶氮二异丁腈(AIBN)协同引发剂对粒径及性能的影响。结果表明,转速恒定,分散剂用量越高,微球的粒径越小;分散剂浓度恒定,转速提高有利于微球的粒径大幅度减小;交联剂的用量对微球的尺寸影响不大。在矿化水中,微球的吸水率迅速下降,离子强度越大,下降幅度越大;随着微球的粒径变小,吸水率变大,当粒径在55μm左右时,最大吸水率达到极值;助引发剂AIBN的存在,能够显著降低粒径的大小。采用平均粒径为5μm的微球进行封堵试验,封堵率可达80%-90%。
Large size polymer micro-spheres were controlling prepared by inverse suspension process. Effects of stirring rate, emulsifier, crosslink monomer and co-initiator azodiisobutyronitrile（AIBN） on the size and properties of micro-spheres were studied. The experimental results show that at constant stirring rate, the more content of the emulsifier is, the smaller size of the micro-spheres is. When content of the emulsifier,keeps constant, the increase of stirring rate benefits the decrease of the micro-spheres size. The content of crosslink monomer has little effect on the size of micro-spheres. In salinity water, water absorption ratio of the micro-spheres decreases rapidly, and the bibulous rate decreases with the increase of ionic. With decrease of the micro-spheres size, the bibulous rate increases, which reaches the maximum when the size is about 55 μm. The size of the micro-spheres decreases significantly after adding AIBN into the initiator system. These micro-spheres with the size about 5μm show the effective plugging performance with plugging ratio of 80 %-90 %.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2013年第5期169-172,176,共5页
Polymer Materials Science & Engineering
基金
国家重大专项“胜利油田特高含水期提高采收率技术”(2011ZX05011)资助项目
关键词
反相悬浮
大尺度
微球
可控制备
性能
inverse suspension polymerization
large size,
micro-spheres
controllable preparation
properties
