茂金属耐热聚乙烯管材料的结构与性能  

Structure and properties of metallocene polyethylene of raised temperature resistance pipe resin

作　　者：朱珍珍 张鹏[1] 李丽 朱裕国[2] 金琳 ZHU Zhen-zhen;ZHANG Peng;LI Li;ZHU Yu-guo;JIN Lin(Lanzhou Petrochemical Research Center,Petrochemical Research Institute,PetroChina,Lanzhou 730060,China;Planning and Development Department,Lanzhou Petrochemical Company,PetroChina,Lanzhou 730060,China;Petrochemical Plant,Lanzhou Petrochemical Company,PetroChina,Lanzhou 730060,China)

机构地区：[1]中国石油石油化工研究院兰州化工研究中心,甘肃兰州730060 [2]中国石油兰州石化公司规划发展处,甘肃兰州730060 [3]中国石油兰州石化公司石油化工厂,甘肃兰州730060

出　　处：《石化技术与应用》2022年第2期86-88,107,共4页Petrochemical Technology & Application

摘　　要：对3种茂金属耐热聚乙烯(PE-RT)管材料(M 1,M 2和M 3)的基本物性、热性能、相对分子质量及其分布、力学性能、流变性能等进行分析表征,考察了3种PE-RT管材料的性能差异。结果表明:3种PE-RT管材料均属于中密度聚乙烯产品,熔体流动速率相近;3种PE-RT管材料中,国产料M 1,M 2的分子质量分布较宽,熔点较低,结晶度小,韧性较好;进口料M 3的熔体拉伸强度较大,可拉伸性最佳,弯曲弹性模量高,具有良好的刚性。The basic physical properties,thermal properties,relative molecular mass and its distribution,mechanical properties and rheological properties of three metallocene polyethylene of raised temperature resistant(PE-RT)pipe resin(M 1,M 2 and M 3)were investigated.Analysis and characterization was conducted to investigate the performance differences of the three PE-RT pipe resin.The results showed that the three PE-RT pipe resin were all medium density polyethylene products with similar melt flow rates;among the three PE-RT pipe resin,the domestic resin M 1 and M 2 had wider molecular mass distribution and lower melting point,smaller crystallinity,and better toughness,the imported resin M 3 had higher melt tensile strength,the best stretch ability,high flexural modulus and good rigidity.

关 键 词：茂金属 管材料 聚乙烯 热性能 相对分子质量及其分布 流变性能 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]