分散聚合法制备抗盐耐温性丙烯酰胺-对苯乙烯磺酸钠共聚物.pdf

2011年第40卷第4期
PETROCHEMICAL TECHNOLOGY
419
分散聚合法制备抗盐耐温性丙烯酰胺
对苯乙烯磺酸钠共聚物
陈林,史铁钓
(合肥工业大学化学工程学院,安徽合肥230009)
摘要]以丙烯酰胺(AM)为主体、对苯乙烯磺酸钠(SSS)为功能单体,采用分散聚合法合成了P(AM-SSS)-驱油剂。利用
检測产物相对分子质量和单体转化的于段考察了影响共聚反应的各因素和变化规律,并通过测试P(AM-SSS)盐溶液表观黏
度的方法对产品进行了综合的抗盐耐温性能评价、P(AM-SSS)合成的较佳条件:V(叔丁醇):V(水)=1:1、初始单体含量
w(AM+SSS)=20%(基于体系质量)、(聚乙烯呲略烷)=6%(基于单体总质量)、w(过硫酸钾)=0.25%(基于单体总质
量)、w(SSS)=15%(基于单体总质量)75℃、6b;在此条件下合成的P(AM-SS的相对分子质量最大,单体转化率最高且具
有较优异的抗盐耐温性能
关键词」丙烯酰胺;对苯乙悕磺酸钠;分散聚合;耐温抗盐;驱油剂
文章编号]1000-8144(2011)04-0419-06[中图分类号]TQ050,425[文献标识码
Synthesis of Temperature and Salt Tolerant Flooding Acrylamide-
Sodium Styrene Sulfonate Copolymer by Dispersion Copolymerization
Chen Lin. Shi Tiejun
School of Chemical Engineering, Hefei University of Technology, Hefei Anhui 230009, China
Abstract J A oil displacement agent-p(am-sss) copolymer was synthesized by dispersion
copolymerization of acrylamide(AM) as the main monomer with the functional monomer, sodium
styrene sulfonate( SSS). Factors effecting the dispersion copolymerization were investigated by
dctermining the relative molecular mass of the copolymer and the monomer conversion. The
temperature and salt tolerance of the product copolymer was evaluated by detecting the apparent
viscosity of the copolymer salt solution. The results showed that the copolymer had the maximum
relative molecular mass and the excellent temperature and salt tolerance under the conditions
polymerization time 6 h, polymerization temperature C, 20%(mass fraction) monomer(based on
the system), V( ter-butyl alcohol): V(H, O)1: 1, 6%(mass fraction polyvinyl pyrrolidone as the
dispersant(based on the total monomer mass, the same below), 0. 25%(mass fraction )potassium
persulfate as the initiator and 15%(mass fraction) SSS
Keywords acrylamide; sodium styrene sulfonate; dispersion polymerization temperature and salt
tolerance; oil displacement agent
目前,石油开采普遍采用部分水解聚丙烯酰胺胺(AM)的聚合方式一般为水溶液聚合,该工艺虽
(HPAM)作为聚合物驱油剂,HPAM虽然水溶性简单易行、易掌握,但所得产品的相对分子质量不
好且具有一定的黏度,但作为三次采油驱油剂时却大且分布较宽,同时产品也存在不洁与溶解慢等诸
存在自身的不足。这主要是因为HPAM分子链上多问题
的羧基对盐非常敏感,特別是当Ca2和Mg2'存在
对苯乙烯磺酸钠(SSS)功能单体中含有磺酸基
时易发生相分离,且温度大于70℃时分子链上的酰
[收稿日期]2010-10-01;[修改稿日期]2010-12-13。
胺基易水解,从而导致聚合物溶液的黏度大幅降作者简介」陈林(1984ー)、男,安磁省調市人、士生。联系人:
低,难以达到提高采收率的目标“。同时,丙烯酰史铁钓,电话0531-29018电廊istihfut@16.com