Research on characterization methods for the anti-sagging performance of polyethylene

IF 2.6 4区 化学 Q3 POLYMER SCIENCE
Jingfan Wang, Yucheng Jin, Liqi Zhuang, Ruiheng He, Shicheng Zhao
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引用次数: 0

Abstract

The quality of anti-sagging performance directly influences the application scope of bimodal polyethylene. Although research exists on the characterization methods of anti-sagging performance in bimodal polyethylene, few studies have indicated which testing methods can most accurately characterize this property. This study compares different testing indicators, including melt flow index, melt strength, rheological behavior, molecular weight, and entanglement of molecular chains, to identify the most precise ones for characterizing the anti-sagging performance of polyethylene. A comprehensive analysis combining the properties of the test materials and the test results indicates that zero shear viscosity and relaxation time can effectively characterize the anti-sagging resistance properties of polyethylene. In contract, melt flow index, melt strength, and entanglement of molecular chains are inadequate for accurately characterizing anti-sagging performance. This study will provide an effective and accurate method for characterizing the modification of anti-sagging performance of polyethylene.

聚乙烯抗下垂性能的表征方法研究
抗下垂性能的好坏直接影响到双峰聚乙烯的应用范围。虽然目前已有关于双峰聚乙烯抗流挂性能表征方法的研究,但很少有研究指出哪种测试方法能最准确地表征这一性能。本研究比较了不同的测试指标,包括熔体流动指数、熔体强度、流变行为、分子量和分子链缠结度,以确定表征聚乙烯抗流挂性能的最精确指标。结合试验材料的特性和试验结果进行综合分析表明,零剪切粘度和松弛时间能有效表征聚乙烯的抗流挂性能。在合同中,熔体流动指数、熔体强度和分子链缠结不足以准确表征抗流挂性能。本研究将为表征聚乙烯抗下垂性能的改性提供一种有效而准确的方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Polymer Research
Journal of Polymer Research 化学-高分子科学
CiteScore
4.70
自引率
7.10%
发文量
472
审稿时长
3.6 months
期刊介绍: Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology. As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology, including: polymer synthesis; polymer reactions; polymerization kinetics; polymer physics; morphology; structure-property relationships; polymer analysis and characterization; physical and mechanical properties; electrical and optical properties; polymer processing and rheology; application of polymers; supramolecular science of polymers; polymer composites.
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