Article
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Model Simulation and Rheological Research on Crosslinking Behavior of Polyethylene Resin
Version 1
: Received: 1 December 2023 / Approved: 4 December 2023 / Online: 4 December 2023 (11:31:37 CET)
A peer-reviewed article of this Preprint also exists.
Chen, X.; Huang, Q. Model Simulation and Rheological Research on Crosslinking Behavior of Polyethylene Resin. Gels 2024, 10, 35. Chen, X.; Huang, Q. Model Simulation and Rheological Research on Crosslinking Behavior of Polyethylene Resin. Gels 2024, 10, 35.
Abstract
The crosslinking behavior of polyethylene (PE) determines its exceptional performance and application. In this study, we investigated the crosslinking behaviors of different PE resins through model simulation and rheological methods. Specifically, the mathematical equation of "S" model was established for PE resin. According to this equation, the optimal maximum gel content for high-density polyethylene (HDPE) was found to be around 85%. Moreover, the maximum crosslinking degrees for different PE resins depended largely on their density and molecular weight. The melt viscosities before crosslinking in PE resins were highly influenced by their melt index. The higher melt indexes resulted in the lower storage moduli, improving melt processability during processing. In addition, the crosslinking rates of PE resins were strongly influenced by peroxide concentration, independent of PE resin structures. For high molecular weight and low-density PE resins, they exhibited decreased ti values, increased A0 values, and decreased k6 values. However, there were no noticeable variations in the values of k2 and phi among different PE resins. And all simulated modeling outcomes showed the remarkable consistency with the experimental rheological data. These findings are of utmost significance in the industrial manufacture of PE resin.
Keywords
polyethylene; crosslink; polymeric structure; model simulation; rheological method
Subject
Engineering, Industrial and Manufacturing Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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