α-己烯/α-辛烯/α-十二烯三元聚合物减阻率研究

The Research of Drag Reduction Rate of the α-Hexylene/α-Dodecene/α-Octylene Copolymer

采用溶液聚合法，以ATiCl4／Al（i—Bu）3为复合催化剂，α-烯烃为单体，正己烷为溶剂，合成α-己烯／α-辛烯／α-十二烯三元聚合物，考察反应条件对聚合物减阻率的影响．采用FT-IR，1HNMR，XRD等表征手段对聚合物结构进行表征．结果表明，在主催化剂用量0．06g、助催化剂用量0．2mL、V（α-十二烯）：V（α-辛烯）：v（α-己烯）为3：2：1（单体总体积30mL）、溶剂（正己烷）10mL和聚合温度-10℃的优化聚合条件下，聚合物的减阻率达到54．11％．IR、XRD和1HNMR表征结果表明，合成的聚合物为结晶度较低的α-烯烃聚合物．

A α-hexylene/α-dodecene/α-octylene copolymer was synthesized by solution polymerization with TICl4 / Al（i-Bu）3composite catalyst and α-olefin monomers . Effects of the polymerization conditions on drag reduction rate were investigated. The experimental resuslts showed that the drag reduction rate could up to 54.11 % under the optimum condition of catalyst TIC14 0.06g , co-catalyst Al（i-Bu）30.2 mL , V（α-dodecene）：V（α-octylene）：V（α-hexylene）=3：2：1 （the total volume of monomer is 30mL）, dissolvent （nhexane） 10 mL and initial reaction temperature -10℃. The IR , XRD and 1HNMR results showed the DRA was α-olefin polymer with low crystallinity.