中国塑料2025，Vol.39Issue(6)：6-9,4.DOI:10.19491/j.issn.1001-9278.2025.06.002
PE-LD的添加对双峰聚乙烯抗熔垂性能的影响
Effect of addition of PE-LD on anti-sag performance of bimodal polyethylene
金裕程 1王璟璠 2赵世成2
作者信息
- 1. 中国石油天然气股份有限公司华东化工销售分公司,上海 200122
- 2. 上海市多相结构材料化学工程重点实验室,华东理工大学化工学院,上海 200237
- 折叠
摘要
Abstract
To address the sagging resistance of HDPE100S,this study introduces a blending strategy utilizing low-densi-ty polyethylene(PE-LD),leveraging its long-chain branching characteristics.The impact of PE-LD incorporation on the rheological and anti-sagging properties of HDPE100S was systematically evaluated using melt flow index,capillary rhe-ometry,and rotational rheometry.The experimental results indicated that the addition of PE-LD had negligible impact on the melt flow rate(MFR)of HDPE100S.Significant increases in processing torque,zero-shear viscosity,and relax-ation time were observed,indicating enhanced melt elasticity and sagging resistance.Differential scanning calorimetry analysis further elucidated the influence of PE-LD on the crystallization and melting behavior of HDPE100S.These re-sults demonstrate that PE-LD acts as an effective rheological modifier,improving the anti-sagging performance of HDPE100S without compromising its flowability during processing.关键词
双峰聚乙烯/低密度聚乙烯/流变行为/抗熔垂性能/熔融结晶行为Key words
bimodal polyethylene/low density polyethylene/rheological behavior/anti-sagging performance/melting crystallization behavior分类
化学工程引用本文复制引用
金裕程,王璟璠,赵世成..PE-LD的添加对双峰聚乙烯抗熔垂性能的影响[J].中国塑料,2025,39(6):6-9,4.
