CAJ | 학술논문

采用溶液聚合法，以 TiCl4？MgCl2为主催化剂、Al（i-Bu）3为助催化剂、乙烯和1-十二烯为聚合单体、正己烷为溶剂，制备了二元聚合物减阻剂。室内环道减阻性能评价结果表明，在1 L 反应釜内，1-十二烯和正己烷总体积为600 mL、聚合温度为－2℃时，最优共聚条件为主催化剂用量0．4 g、n（Al）？n（Ti）＝80、V （1-十二烯）？V （正己烷）＝2？3、m（1-十二烯）？m（乙烯）＝912，合成的聚合物减阻率为45．45％。采用13 C-NMR、XRD 对聚合物结构和结晶度进行表征，结果表明，乙烯单体的引入使聚合物的结晶度明显降低，有助于提高减阻剂在油品中的有效浓度，降低减阻剂溶液的用量。
채용용액취합법，이 TiCl4？MgCl2위주최화제、Al（i-Bu）3위조최화제、을희화1-십이희위취합단체、정기완위용제，제비료이원취합물감조제。실내배도감조성능평개결과표명，재1 L 반응부내，1-십이희화정기완총체적위600 mL、취합온도위－2℃시，최우공취조건위주최화제용량0．4 g、n（Al）？n（Ti）＝80、V （1-십이희）？V （정기완）＝2？3、m（1-십이희）？m（을희）＝912，합성적취합물감조솔위45．45％。채용13 C-NMR、XRD 대취합물결구화결정도진행표정，결과표명，을희단체적인입사취합물적결정도명현강저，유조우제고감조제재유품중적유효농도，강저감조제용액적용량。
Using ethylene and dodecene as polymerization monomers,a drag reduction copolymer of ethylene?dodecene was synthesized by solvent polymerization with n-hexane as a solvent. The composite TiCl4?MgCl2 was used as a main catalyst and Al(i-Bu)3 as a cocatalyst. The structure and crystalinity of the copolymer produced were characterized by 13 C-NMR and XRD techniques. The drag reduction per-formance of copolymer was evaluated in a self-designed indoor loop evaluation system with 1L reactor containing 600 mL mixture of dodecene and n-hexane at -2 ℃. Under the optimum polymerization con-ditions:0.4 g main catalyst,n (Al)?n (Ti)of 80,V (dodecene)?V (n-hexane)of 2?3,m (dodecene)? m(ethylene)of 912,the drag reduction rate is 45.45%. Compared with dodecene homopolymer,the crystallinity of the copolymer of ethylene?dodecene is significantly decreased due to the participation of ethylene,which helps to improve effective concentration of the copolymer in the oil,and to reduce the amount of drag reduction solution.