长链α-烯烃本体聚合制备油溶性减阻剂的研究

Preparation of Oil-soluble Drag Reduction Agent by Bulk Polymerization of Long Chain α-olefin

以负载型TiCl4/MgCl2为引发体系,在微正压条件下采用本体聚合法引长链α-烯烃聚合,制备高减阻性能的油溶性减阻剂(DRA)。采用正交试验法考察了各项因素对聚合反应的影响,最终确定最优化的工艺条件。聚合物环道减阻测试的结果表明,在环道中添加的质量浓度为0.01 kg/m3时,减阻率高达55%.用乌氏粘度计测定了特性粘数,并通过Mark-Houwink方程估算了样品的粘均分子量。通过H-NMR,IR,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的原油减阻剂。α-十二烯本体均聚还成功实现了中试,制备出了减阻效果和抗剪切性能比较好的样品,具有相当大的工业价值。

Using supported TiCl4/MgCl2 as initiator system,long chain α-olefin as monomer,high performance oil-soluble drag reduction agent（DRA） was prepared by bulk polymerization under micro positive pressure.The orthogonal experiment was used to examine the effect of various factors on the polymerization to get the optimum technological conditions.Drag reducing efficiency was evaluated by the simulative loop evaluation apparatus.The results show that when dosage of the oil-soluble drag reduction agent is 0.01 kg/m3,the drag reduction efficiency can reach 55%.Ubbelohde viscometer was used to measure the intrinsic viscosity,Mark-Houwink equation was used to estimate viscosity-average molecular weight of the sample.H-NMR,IR,XRD and other methods were used to characterize the polymer,it was proved that the bulk polymerization method can prepare oil-soluble drag reduction agent with high supple and ultra-high molecular weight.The α-olefin bulk homopolymerization has also successfully achieved in pilot-scale experiment,prepared samples with high drag reducing efficiency and better anti-shear properties,have considerable industrial value.