全文下载：2012040362
李秀妹1， 叶天旭2， 郭明红1， 张予辉2， 张丽华1， 曹成3
（1.渤海钻探工程技术研究院华北分院，河北 任丘 062552；2.中国石油大学（华东）化学化工学院，山东 青岛 266555；
3.渤海钻探第四钻井工程分公司，河北 任丘 062552）
摘要： 以环氧氯丙烷和二甲胺为原料合成出了聚季铵盐（PEM），然后以过硫酸铵和异丙醇氧化还原体系引发聚季铵盐与丙烯酰胺（AM）进行接枝聚合反应得到一种新型阳离子絮凝剂PEM/AM。对PEM/AM接枝效率、电荷密度、特性黏度以及絮凝性能进行了测试，并采用红外光谱对其结构进行了表征。PEM/AM的最佳合成条件为：m（AM ）∶ m（PEM）≈5∶1，异丙醇浓度为50 mmol·L-1左右，反应温度为70 ℃左右，反应时间约为4 h。絮凝性能评价结果表明，相同加量情况下PEM/AM絮凝剂除油、除浊及降低CODCr效果明显优于实验所选用的3种市售聚丙烯酰胺类絮凝剂。
关键词: 絮凝剂； 聚季铵盐； 丙烯酰胺； 接枝共聚
中图分类号： X 703.1；TQ 314.253 文献标志码： A
收稿日期：2012-02-22
作者简介： 李秀妹（1980—），女，工程师.
Synthesis and Properties of a Cationic Flocculant PEM/AM
LI Xiu-mei1, YE Tian-xu2, GUO Ming-hong1，ZHANG Yu-hui2, ZHANG Li-hua1, CAO Cheng3
（1. Engineering Technology Research Institute, CNPC Bohai Drilling Engineering Co., Ltd., Renqiu 062552, China;
2. College of Chemistry and Chemical Technology Engineering, China University of Petroleum, Qingdao 266555, China;
3. The Fourth Drilling Branch Co., CNPC Bohai Drilling Engineering Co., Ltd., Renqiu 062552, China）
Abstract: In this article, epichlorohydrin and dimethylamine were employed to synthesize a poly-quaternary ammonium salt (PEM). Then PEM and acrylamide (AM) composed a graft polymerization (PEM/AM) initialized by ammonium persulfate and isopropyl alcohol oxidation reduction system. The graft yield, intrinsic viscosity, charge density and turbidity reducing ratio of PEM/AM flocculant were determined and its structure was indicated by IR. The optimized reaction conditions for PEM/AM flocculant are as follows: m（AM ）∶m（PEM）≈5∶1， the concentration of isopropyl alcohol is about 50 mmol·L-1, the reaction temperature is about 70℃ and the reaction time is about 4 h. The experiment results show that the turbidity-reducing, oil-reducing and COD-reducing performances of PEM/AM flocculant are more outstanding than three PAM flocculants with same adding.
Key words:flocculants; polyquaternary ammonium salt; acrylamide; graft polymerization
