带有不同取代基的α-二亚胺镍催化剂催化乙烯聚合的研究  

α-Diimine Nickel Catalyst with Different Substituents For Ethylene Polymerization

作　　者：安清明 韦德帅 韩伟伟[1] 翟飞帆 胡博文[3] 侯彦辉[1] 杨敏[3] AN Qing-ming;WEI De-shuai;HAN Wei-wei;ZHAI Fei-fan;HU Bo-wen;HOU Yan-hui;YANG Min(School of Materials Science and Engineering,Tianjin Polytechnic University,Tianjin 300387,China;Daqing Petrochemical Research Center,Petrochemical Research Institute of CNPC,Daqing 163714,China;Department of Polymer Materials and Engineering,College of Chemical Engineering,Hebei University of Technology,Tianjin 300130,China)

机构地区：[1]天津工业大学材料科学与工程学院,天津300387 [2]中国石油石油化工研究院大庆化工研究中心,大庆163714 [3]河北工业大学化工学院高分子材料与工程系,天津300130

出　　处：《高分子通报》2021年第6期137-143,共7页Polymer Bulletin

基　　金：中石油小试项目。

摘　　要：设计并合成了两种苊环带有羟基、苯胺上带有不同取代基的α-二亚胺Ni(Ⅱ)催化剂Cat-F和Cat-OCH_(3),研究了两种催化剂在一铝二乙基铝的作用下催化乙烯均聚的催化性能。研究表明,温度和压力对催化剂活性的影响较大。此外,采用差示扫描量热仪(DSC)、碳谱核磁(^(13)C-NMR)、凝胶渗透色谱(GPC)等仪器对聚合产物进行了测试,分析了聚合条件对聚乙烯的熔点、支化度、平均分子量及其分布的影响。We designed and synthesized two α-diimine Ni(Ⅱ) catalysts, with hydroxyethyl-phenoxyl group on acenaphthequinone-backbone and with different electronic-effect substituents on N-aryl, Cat-F and Cat-OCH_(3). The catalytic activity of the two catalysts in the cocatalyst of diethyl aluminum chloride(DEAC) was studied. We found that temperature and pressure have strong influence on catalyst activity. In addition, differential scanning calorimeter(DSC), carbon nuclear magnetic(^(13)C-NMR), gel permeation chromatography(GPC) and other equipment were used to analyze the effect of polymerization conditions on the melting point, degree of branching, weight average molecular weight and polydispersity index of the obtained polyethylene.

关 键 词：α-二亚胺镍催化剂 乙烯 支化聚乙烯 

分 类 号：TQ316[化学工程—高聚物工业] TQ426