本体预聚合法制备聚1-十二烯减阻剂

摘要以TiCl4/Al(i-Bu)3为引发体系,用本体预聚合法引发1-十二烯聚合,制备高减阻性能的油溶性减阻剂。研究了二苯基二甲氧基硅烷(DDS)、预聚与后聚单体体积比、预聚温度和预聚时间对聚合物减阻性能的影响。结果表明,在优化的合成工艺条件下,能够合成减阻率为50.67%,增输率为48.1%的聚合物(添加量为10 mg/L)。通过IR、GPC和1H-NMR分析表明:转化率接近100%,重均相对分子质量Mw为3.58×106、相对分子质量分布宽度指数Mw/Mn为4.44。采用预聚工艺较本体直接聚合可以节省主催化剂用量达40%以上。

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	苏张教
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关键词：预聚合减阻剂 1-十二烯增输

Abstract： Using TiCl_4/Al(i-Bu)_3 as initiating system to polymerize 1-dodecene by bulk prepolymerization,high efficiency oil-solvent drag reducer was synthesized.The influence of DDS,the 1-dodecene volume ratio of prepolymerization to postpolymerization,prepolymerization temperature and prepolymerization time on drag reducing efficiency were studied.Under the optimal synthesis conditions,the drag reducing performance of the polymer was better.The results of drag reducing tests in circle conduit indicated that polymer with the drag reducing efficiency of 50.67% and the transportation-increasing rate of 48.1% could be achieved by adding mass concentration 10 mg/L of the final product to diesel fuel.The results of IR,GPC and()~1H-NMR showed that the conversion rate nearly reached 100%,the average molecular weight was 3.58×10~6 and the polydispersity index was 4.44.The dosage of catalyst used in bulk prepolymerization could be saved over 40% compared to that used in bulk polymerization.

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Received 2009-09-15; published 2009-09-15

引用本文:

苏张教;李惠萍;陈文生;薄文旻;.本体预聚合法制备聚1-十二烯减阻剂[J]. 化学工业与工程, 2009,26(5): 386-390

SU Zhang-jiao,LI Hui-ping,CHEN Wen-sheng,BO Wen-min.Preparation of Poly-1-Dodecene Drag Reducer by Bulk Prepolymerization[J]. Chemcial Industry and Engineering, 2009,26(5): 386-390