摘要
通过对注塑成型聚醚醚酮(PEEK)试样进行人工加速物理老化实验,得到试样屈服应力随物理老化时间的变化规律,以132℃为参考温度最终拟合得到以PEEK屈服应力为表征的物理老化模型。基于此模型并结合时温等效原理,预测PEEK注塑成型及后期物理老化过程中的屈服应力变化,并通过实验进行了验证。
In this paper, the accelerated physical aging tests were performed on the injection-molded poly-ether-ether-ketone(PEEK) tensile samples, and the variation law of the yield stress of the samples with physical aging time was derived. Through data fitting, the physical aging model of PEEK based on the evolution of yield stress can be obtained at the reference temperature of 132 ℃. Finally, based on this model and combined with the temperature equivalent principle, the yield stress evolution of PEEK samples during injection molding and the following physical aging process can be predicted, and the predictions were verified by experiments.
作者
常旭阳
王新宇
李征
谷俊峰
阮诗伦
申长雨
Xuyang Chang;Xinyu Wang;Zheng Li;Junfeng Gu;Shilun Ruan;Changyu Shen(Department of Engineering Mechanics,Dalian University of Technology,Dalian 116024,China;State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of Technology,Dalian 116024,China;National Engineering Research Center of Plastic Mold,Zhengzhou University,Zhengzhou 450002,China)
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2019年第10期131-137,共7页
Polymer Materials Science & Engineering
基金
国家自然科学基金重点项目(11432003)
863计划项目(2015AA033803)
中央高校基本科研业务项目(DUT17LK08)
辽宁省教育厅重点实验室基础研究项目(LZ2015016)
111引智计划(B14013)
关键词
聚醚醚酮
物理老化
屈服应力
注塑成型
poly-ether-ether-keton
physical aging
yield stress
injection molding
