摘要
通过优化双螺杆反应挤出工艺提高聚对苯二甲酸乙二醇酯(PET)的熔体黏弹性,参与反应的是一种环氧基扩链剂,优化工艺考察了机筒温度,螺杆转速和喂料量三个主要影响因素,采用Box-Behnken响应面方法进行实验设计和数据分析。分析结果表明,三个变量都显著影响挤出产物的黏弹性,根据影响程度的大小排名为:螺杆转速>喂料量>机筒温度。间歇发泡实验证明了工艺优化能够提高PET的发泡性能。
Modified polyethylene terephthalate （PET） was prepared through a twin-screw reactive extrusion process with an epoxy compound as chain extender. The effect of processing parameters on the melt viscoelasticity of PET was investigated by Box-Behnken response surface analysis. The results demonstrate that the ranking according to the degree of influence on the viscoelasticity is： screw speed 〉 feed rate 〉 barrel temperature. Batch foaming experiment results show the foaming properties of PET are improved by optimizing the process conditions.
作者
杨兆平
信春玲
王泽鸣
李小刚
白雪
何亚东
YANG Zhao-ping XIN Chun-ling WANG Ze-ming LI Xiao-gang BAI Xue HE Ya-dong(College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China Engineering Research Center for Polymer Processing Equipment, Ministry of Education, Beijing 100029, China)
出处
《塑料工业》
CSCD
北大核心
2017年第10期55-59,共5页
China Plastics Industry
基金
国家重点研发计划项目(2016YFB0302202)
