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The relationship between mechanical properties and morphology of vibration-injection-molded polyethylene
Authors: Li Youbing; Gao Xueqin; Yuan Shaoyan; Yuan Yi; Zhang Jie; Ke Wenti; Shen Kaizhi
Source: Polymer International, Volume 54, Number 1, January 2005 , pp. 240-245(6)
Publisher: John Wiley & Sons, Ltd.
Abstract:
This paper introduces a novel melt vibration-injection molding. The effect of mid-frequency melt vibration on mechanical properties was introduced, and SEM, WAXD and DSC investigations had been employed to provide evidence for explaining the relationship between mechanical properties and morphology of vibration-injection-molded specimens. The results show that the effect of vibration frequency is very different from that of vibration pressure amplitude. At a given vibration pressure amplitude, the increase of vibration frequency is beneficial for obtaining preferential orientation, more perfect lamellae and enhanced mechanical properties. For a given vibration frequency, increase of vibration pressure amplitude is a pre-requisite for the achievement of a large-scale lamella, more pronounced orientation, increase of cyrstallinity and high strength of high-density polyethylene, but part of the toughness is lost. Copyright © 2004 Society of Chemical IndustryKeywords: vibration injection molding; high-density polyethylene; mechanical property; morphology
Document Type: Research article
DOI: http://dx.doi.org/10.1002/pi.1698
Affiliations: 1: College of Polymer Science and Engineering, The State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, China
Publication date: 2005-01-01
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- By this author: Li Youbing ; Gao Xueqin ; Yuan Shaoyan ; Yuan Yi ; Zhang Jie ; Ke Wenti ; Shen Kaizhi
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