文献类型：期刊文献

中文题名：单峰PE100级管材树脂的结构与性能

英文题名：Structure and properties of monomodal PE100 for pipes

作者：唐岩[1];王群涛[1];刘柏平[2];郭锐[1];程瑞华[2]

机构：[1]中国石油化工股份有限公司齐鲁分公司研究院,山东省淄博市255400;[2]华东理工大学化学工程联合国家重点实验室,上海200237

年份：2011

卷号：28

期号：5

起止页码：14

中文期刊名：合成树脂及塑料

外文期刊名：China Synthetic Resin and Plastics

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；

语种：中文

中文关键词：高密度聚乙烯;共聚单体;管材;结构;熔体强度

外文关键词：high density polyethylene; comonomer; pipe; structure; melt strength

摘要：采用凝胶渗透色谱分析、核磁共振碳谱分析、升温淋洗分级分析技术研究了PE100级管材用单峰分布高密度聚乙烯(HDPE)DGDB2480H的分子结构及性能,并且与进口双峰PE100级管材树脂HDPE进行了对比。结果表明:两种管材树脂的分子结构不同,主要表现在相对分子质量分布、共聚单体的种类及在主链的分布上;DGDB2480H与进口双峰PE100级管材树脂的流变行为、平衡扭矩及熔体强度基本类似。采用1-己烯作共聚单体、在高相对分子质量部分有较高的共聚单体插人量、采用铬系催化剂是单峰管材树脂DGDB2480H能够达到PE100级的主要原因。
The molecular structure and properties of monomodal PE100 grade high density polyethylene （HDPE）, DGDB2480H, designed for pipes was studied and compared with the imported bimodal PE100 grade HDPE for pipes by means of gel permeation chromatography（GPC）, carbon nuclear magnetic resonance（^13C- NMR）, temperature rising elution fractionation（TREF）. The results show that the two resins have different molecular structures because of their discrepancy in the relative molecular mass distribution and comonomer＇s type and distribution in the main chain. The rheological behavior, balanced torque and melt strength of DGDB2480H are similar to those of the imported bimodal PE100 for pipes. Adopting 1-hexene as comonomer and inserting higher amount of the comonomer in the chain segment with high relative molecular mass as well as using chromium catalyst are deemed as the primary reasons why the monomodal DGDB2480H can reach the requirements of PE100 grade.