中国塑料2017，Vol.31Issue(6)：36-40,5.DOI:10.19491/j.issn.1001-9278.2017.06.006
聚对苯二甲酸乙二醇酯的拉伸应力波动行为研究
Study on Stress-oscillation Behavior of Poly(ethylene terephthalate)During Tensile Test
葛媛 1曹春雷 1马剑英 1邓云娇 1张会轩1
作者信息
- 1. 长春工业大学教育部合成树脂与特种纤维工程研究中心,吉林 长春130012
- 折叠
摘要
Abstract
This paper reported a study on the effect of molecular weight on stress-oscillation behavior of poly (ethylene terephthalate)(PET)during the tensile experiment.Tensile test, differential scanning calorimetry and scanning electron microscopy were performed to investigate the stress-oscillation behavior,crystallinity,and macroscopic and microscopic morphologies in different regions of PET specimen.The results indicated that the stress-oscillation behavior of PET specimen was dependent on the relative molecular weight of PET resin and the tensile rate. Inhomogeneous voids observed inside the PET specimen were derived from the stress oscillation and considered as a microscopic result.The occurrence of stress oscillation was due to the difference of crystallinity degree within the bright-dark alternating bands during the process of stretch-induced crystallization.关键词
聚对苯二甲酸乙二醇酯/应力波动/空洞化/相对分子质量/结晶度Key words
poly(ethylene terephthalate)/stress oscillation/cavitation/relative molecular weight/crystallinity degree分类
化学化工引用本文复制引用
葛媛,曹春雷,马剑英,邓云娇,张会轩..聚对苯二甲酸乙二醇酯的拉伸应力波动行为研究[J].中国塑料,2017,31(6):36-40,5.
