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以TiCl4/AlEt2Cl为引发体系,在常压条件下采用本体聚合法引发长链α-烯烃聚合,制备高减阻性能的油溶性减阻剂(DRA)。考察了各项因素对聚合反应的影响,最终确定最优化工艺条件,提出一项合成油溶性减阻剂的新工艺。聚合物环道减阻测试的结果表明,聚合物在环道中添加的质量浓度为0.01 kg/m3时,减阻率高达40.1%。通过1H-NMR,XRD等方法对聚合物进行表征,证明用该方法可以制得高柔顺性的超高分子量(Mw=4.1×106,Mn=4.5×105,PDI=9.14)的原油用聚合物。
Using TiCl4 / AlEt2Cl as initiator system, the polymerization of long-chain α-olefins was initiated by bulk polymerization at atmospheric pressure to prepare oil-soluble DRA with high drag-reducing properties. The effects of various factors on the polymerization reaction were investigated. Finally, the optimum process conditions were determined and a new process of synthesizing oil-soluble DRA was proposed. The results of the polymer loop drag reduction test show that the drag reduction rate of the polymer is as high as 40.1% when the mass concentration of the polymer in the loop is 0.01 kg / m3. The polymer was characterized by1H-NMR and XRD. The results showed that this method can produce highly compliant polymer with high molecular weight (Mw = 4.1 × 106, Mn = 4.5 × 105, PDI = 9.14) .