Page 195 - 《精细化工》2020年第5期

第 37 卷第 5 期 精 细 化 工 Vol.37, No.5
202 0 年 5 月 FINE CHEMICALS May 2020

油田化学品与油品添加剂
长侧链聚 α-烯烃减阻剂的合成及性能

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李东城 ，李隆伟 ，唐 萍 ，赵 巍 ，王 海 ，宾月珍
（1. 大连理工大学 化工学院 高分子材料系，辽宁 大连 116024；2. 中国石化大连研究院，辽宁 大连
116045）
摘要：以 Ziegler-Natta 催化剂 TiCl 4 /Al(i-Bu) 3 为催化体系，己烯、辛烯、癸烯和十二烯 4 种长链 α-烯烃为聚合单
体，制备得到超高相对分子质量聚烯烃减阻剂，考察了聚合反应条件对聚合物相对分子质量的影响，以及单体
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侧链长度对聚合物结晶性和减阻性能的影响。得到的最佳聚合反应条件为：主催化剂TiCl 4 浓度为5.2×10 mol/L，
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聚合单体与环己烷体积比为 1∶1，反应时间至少为 1440 min，此时，聚合产物重均相对分子质量达到 3.50×10 ；
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通过 CNMR 对聚合物进行分子结构表征，证明聚合完全且为目标产物；DSC 曲线和 XRD 谱图表明，随着聚
烯烃侧链长度的增加，聚合物结晶性增强，影响聚合物减阻剂溶解性。采用旋转圆盘测试方法表征了聚合物减
阻率，结果表明，在相同相对分子质量条件下，随着聚合物的侧链长度增加，减阻率明显提高。
关键词：减阻剂；聚 α-烯烃；减阻率；聚合物结晶；Ziegler-Natta 催化剂；油品添加剂
中图分类号：TE869 文献标识码：A 文章编号：1003-5214 (2020) 05-1045-06

Synthesis and properties of long side chain poly-α-olefin drag reducer

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LI Dongcheng , LI Longwei , TANG Ping , ZHAO Wei , WANG Hai , BIN Yuezhen
（1. School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China; 2. Sinopec
Dalian Research Institute of Petroleum and Petrochemicals, Dalian 116045, Liaoning, China）
Abstract: Four kinds of long-chain α-olefins, including hexene, octene, decene and dodecene were selected
as monomers in the homopolymerization catalyzed by TiCl 4/Al(i-Bu) 3 to prepare polyolefin drag reducing
agents with ultra high relative molecular weight. The effects of polymerization conditions on the relative
molecular weight of the polymers were investigated. The effect of the side chain length of the monomers on
the crystallinity and drag reduction performance of the polymer were also discussed. The optimum
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polymerization conditions were obtained as follows: molar concentration of TiCl 4 as main catalyst 5.2×10
mol/L, volume ratio of monomer to cyclohexane 1∶1, and reaction time at least 1440 min. Under these
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conditions, the relative molecular weight of the polymers was higher than 3.50×10 . CNMR results
indicated that the polymerization was completed and the resultant homopolymers were consistent with the
target product. DSC and XRD measurements showed that with the increase of side chain length of
polyolefin, the crystallinity of polymer increased, which affected the solubility of polymer drag reducer.
The rotating disk system was used to test the polymer drag reduction rate. The results revealed that the drag
reduction rate tended to increase with the increase of the side chain length of the drag reduction agent when
their relative molecular weights were the same.
Key words: drag reduction agent; poly-α-olefin; drag reduction rate; polymer crystallization; Ziegler-Natta
catalyst; petroleum additives

随着经济发展，成品油需求量在日益增加，这 增输”，成为备受技术及科研人员关注的问题 [2-3] 。
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也对成品油管道输送量提出了更高要求 。因此， 流体在管道中输送时，流体内会形成湍流漩涡，使
降低成品油在管道输送中的能量消耗，实现“减阻 得动能沿非径向方向损失，导致输送泵的能量损

收稿日期：2019-11-27; 定用日期：2020-01-20; DOI: 10.13550/j.jxhg.20191115
基金项目：中国石化科技发展项目（318022-5）
作者简介：李东城（1994—），男，硕士生，E-mail：2218666821@qq.com。联系人：宾月珍（1966—），女，教授，E-mail：binyz@dlut.edu.cn。