CAJ | 학술논문

采用BCM催化剂催化乙烯-丙烯气相共聚，研究了不同外给电子体及反应条件对共聚反应速率的影响，引入半衰期概念评价了共聚反应的衰减情况。实验结果表明，通过测定聚合稳定后反应釜内的乙烯与丙烯的摩尔比即可快速判断不同催化体系中乙烯和丙烯聚合速率的差异。外给电子体对r1/r2（r1：乙烯竟聚率；r2：丙烯竟聚率）的影响从大到小的顺序为：四乙氧基硅烷（T-donor）>二异丁基二甲氧基硅烷（B-donor）>二异丙基二甲氧基硅烷（P-donor）>甲基环己基二甲氧基硅烷（C-donor）>二环戊基二甲氧基硅烷（D-donor）。共聚反应衰减速率的大小顺序为：B-donor>T-donor>C-donor>D-donor>P-donor。采用C-donor时，适宜的反应温度为80℃，随反应压力的增大，乙烯的竟聚率增大。
채용BCM최화제최화을희-병희기상공취，연구료불동외급전자체급반응조건대공취반응속솔적영향，인입반쇠기개념평개료공취반응적쇠감정황。실험결과표명，통과측정취합은정후반응부내적을희여병희적마이비즉가쾌속판단불동최화체계중을희화병희취합속솔적차이。외급전자체대r1/r2（r1：을희경취솔；r2：병희경취솔）적영향종대도소적순서위：사을양기규완（T-donor）>이이정기이갑양기규완（B-donor）>이이병기이갑양기규완（P-donor）>갑기배기기이갑양기규완（C-donor）>이배무기이갑양기규완（D-donor）。공취반응쇠감속솔적대소순서위：B-donor>T-donor>C-donor>D-donor>P-donor。채용C-donor시，괄의적반응온도위80℃，수반응압력적증대，을희적경취솔증대。
The gas-phase copolymerization of ethylene and propylene with the BCM catalyst was studied. The effects of different external electron donors and reaction conditions on the copolymerization reaction rate were investigated,and the decay of the copolymerization reaction were evaluated with the half-life(difference between the time when the copolymerization rate reached half of the maximum and the time when the copolymerization rate reached the maximum). The results indicated that the copolymerization rate with different catalyst systems could quickly be determined by measuring the ratio of ethylene/propylene in the reaction kettle. The sequence of the effects of the electron donors onr1/r2(r1:reactivity ratio of ethylene;r2:reactivity ratio of propylene)was:tetraethyl siloxane(T-donor)>diisobutyl dimethyl silane(B-donor)>diisopropyl dimethyl silane(P-donor)>methyl cyclohexyldimethoxysilane(C-donor)>dicyclopentanyl dimethyl oxygen radical silane(D-donor). The sequence of the decay rate of the copolymerization with the external electron donors was:B-donor>T-donor>C-donor>D-donor>P-donor. When C-donor was used,the optimum reaction temperature was 80℃.