双峰聚乙烯粉料结构形态及粉体流动性对比分析  

Comparative analysis on structure,morphologyand fluidity of bimodal polyethylene

作　　者：窦彤彤 付玉祥 刘爱民[3] 李红明 王晶晶 李荣波 洪柳婷 孟子逸 高玉李 义建军 陈商涛 DOU Tongtong;FU Yuxiang;LIU Aimin;LI Hongming;WANG Jingjing;LI Rongbo;HONG Liuting;MENG Ziyi;GAO Yuli;YI Jianjun;CHEN Shangtao(Petrochemical Research Institute,PetroChina,Beijing 102206,China;PetroChina Fushun Petrochemical Company,Fushun 113006,China;Polyethylene Plant of Jilin Petrochemical Company,Jilin 132022,China)

机构地区：[1]中国石油石油化工研究院,北京102206 [2]中国石油抚顺石化公司,辽宁抚顺113006 [3]中国石油吉林石化公司乙烯厂,吉林吉林132022

出　　处：《弹性体》2023年第1期69-74,共6页China Elastomerics

摘　　要：采用差示扫描量热分析、扫描电子显微镜、比表面积分析、凝胶渗透色谱分析、正己烷提取物等方法对比分析了三种Hostalen淤浆工艺生产双峰聚乙烯粉料的结构、形态,并研究了聚乙烯粉料粉体流动性的影响因素。结果表明,三种粉料的流动性顺序依次为HDPE-1>HDPE-2>HDPE-3;进一步研究发现,HDPE-3粉料颗粒的外表面有大量毛线状聚合物聚集分布,内部微观结构更为致密,且正己烷提取物含量较高,是致使其流动性差的主要原因。DSC,SEM,BET,GPC and other methods were used to characterize the structure,morphologies and fluidity of three type bimodal polyethylene raw materials(HDPE-1,HDPE-2 and HDPE-3)that produced by Hostalen slurry process,and the factors affecting the fluidity of polyethylene powder were further studied.The results showed that the powder fluidity of HDPE-3 was worse than those of HDPE-1 and HDPE-2.The main reason for poor fluidity was a large amount of lanate polymer aggregation/distribution on external surface of HDPE-3 polymer,and the internal microstructure was more compact.Besides,the highest content of hexane extract of HDPE-3 polymer among three bimodal polyethylene was another reason for poor fluidity.

关 键 词：双峰聚乙烯 流动性 结构 形态 对比分析 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]