复合载体型Z-N催化剂制备超高分子量聚乙烯的研究  

Composite support Ziegler-Natta catalyst for the preparation of UHMW-PE

作　　者：陈克文[1] 张瑞[1,2] 刘宾元[1] 闫卫东[1] 

机构地区：[1]河北工业大学化工学院,天津300130 [2]中国石油大庆化工研究中心,大庆163714

出　　处：《河北工业大学学报》2011年第1期68-71,共4页Journal of Hebei University of Technology

基　　金：高等学校博士学科专项科研基金(200800800002);河北省科技支撑基金(09215110D)

摘　　要：制备了3种镁硅比不同的复合载体型齐格勒-纳塔(Z-N)催化剂,并催化乙烯均聚和乙烯/己烯-1共聚合,考察了复合载体中镁硅比不同对催化剂活性以及产品结晶性能的影响.在一定镁硅比下,考察了路易斯酸三氯化铝加入量对乙烯均聚产品分子量和分子量分布的影响.研究结果表明,在镁硅比为1∶1,三氯化铝加入量为ω(AlCl3)∶ω(MgCl2)=1∶5时,所得聚合物的分子量为26.84×105g/mol,分子量分布最宽为10.36,且随三氯化铝含量的增加,分子量向高分子量部分移动.Three kinds of with different Mg-Si ratio were prepared for the ethylene/hexene-1 copolymerization.The effects of the Mg-Si ratio on the catalytic activity of the prepared catalysts as well as the production and crystalline properties of the polymer were studied.In addition,the effect of the Lewis AlCl3 on the molecular weight and its distribution of the polymers was investigated at a certain Mg-Si ratio.It shows that under the Mg-Si ratio of 1∶1 and ω（AlCl3） /ω（MgCl2） of 1∶5,the molecular weight of the copolymer will be 26.84 × 105 g/mol and the maximum molecular weight distribution index will be 10.36.The moiety with high molecular weight of the copolymer will increase with the content of AlCl3.

关 键 词：ZIEGLER-NATTA 复合载体 给电子体 三氯化铝 聚乙烯 

分 类 号：O632.12[理学—高分子化学]