中国塑料2018，Vol.32Issue(2)：44-48,5.DOI:10.19491/j.issn.1001-9278.2018.02.007
相对分子质量分布对双峰聚乙烯薄膜树脂等温结晶动力学的影响
Effect of Molecular Weight Distribution on Isothermal Crystallization Kinetics of Bimodal Polyethylene Resin for Films
摘要
Abstract
Isothermal crystallization kinetics of two types of bimodal polyethylene resins (9455F1-W and 9455F1-100) for films was studied in this work,and the effect of bimodal molecular weight distribution on their crystallization behavior was discussed.The results from gel permeation chromatography measurements indicated that these two types of resins exhibited a bimodal distribution feature.They had a similar molecular weight but different fractions in high-and low-molecular-weight macromolecules.9455F1-W sample had a higher fraction in-molecular-weight macromolecules than 9455F1-100 sample.Isothermal crystallization investigation indicated that the crystallization rate constant increased with an increase in the fraction of low-molecular-weight macromolecules,and however the half crystallization time decreased,suggesting an increase in crystallization rate.关键词
双峰聚乙烯/等温结晶动力学/相对分子质量分布/结晶速率Key words
bimodal molecular-weight polyethylene/isothermal crystallization kinetics/molecular weight distribution/crystallization rate分类
化学化工引用本文复制引用
屈晓峰,王长全,韩向艳,雷良才,胡跃鑫..相对分子质量分布对双峰聚乙烯薄膜树脂等温结晶动力学的影响[J].中国塑料,2018,32(2):44-48,5.基金项目
辽宁省教育厅科学研究一般项目(L2016001) （L2016001）
辽宁石油化工大学国家级科研项目培育基金资助(2016PY-004) （2016PY-004）
辽宁省科技厅博士启动基金(20170520284) （20170520284）
