高分子减阻剂共聚物的合成与表征

采用本体聚合法，以TiCl4／MgCl2-Al(i-Bu)3 为催化剂对1-辛烯/1-十二烯的长链α-烯烃进行共聚，考察不同的聚合条件对减阻率的影响，来提高二元聚合物的减阻率，最终确定最佳工艺条件。聚合物环道减阻测试的结果表明，当1-辛烯在反应物中体积分数为33%左右时，减阻率高达52.3%，通过凝胶色谱、1H-NMR、IR等方法对聚合物进行表征，证明用该方法可以制得重均相对分子质量为6.58×106 ,数均相对分子质量为2.41×106，相对分子质量分布宽度指数为2.73的原油用聚合物减阻剂，聚合较完全。

SYNTHESIS AND CHARACTERIZATION OF DRAG REDUCING COPOLYMER

High efficient drag reducing agent was synthesized by bulk polymerization using TiCl_4/MgCl_2-Al(i-Bu)_3 as catalyst and mixed 1-octene/1-dodecene long chain α-olefins as monomers.The effect of reaction conditions on the drag reducing efficiency of copolymer was investigated and optimum process parameters were obtained.The prepared copolymer was characterized by GPC,~1H-NMR,IR and its drag reducing performance was evaluated by a loop testing system.Test results showed that a polymer obtained at a 1-oetene volume ratio of 33% having high molecular weight(M_w=6.58×10~6,M_n=2.41×10~6,M_w/M_n=2.73)was well polymerized,and its drag reduction rate at an added dosage of 0.01 kg/m~3 with diesel fuel was up to 52.3%,which indicated that the obtained Dolymer could be used as drag reducing agent for crude oil.