摘要
相容性是阻碍废旧塑料高质高值回收的主要问题。文中采用自行研制偏心转子挤出机所提供的拉伸流场,以常用的PP和PE为研究对象,研究拉伸流场作用下PP/PE不相容体系结构性能演变行为,着重考察偏心转子挤出机加工转速和PP/PE组分比的影响。通过扫描电镜证明了拉伸流场可以诱导PP/PE不相容体系形成类蜂窝结构,并建立了结构演变规律。通过对制品力学性能的表征,证明了拉伸流场可以有效实现PP/PE的物理强制增容,并阐明了拉伸强度与拉伸流场强度和PP/PE组分比的关系。该文可以为聚合物不相容体系的物理强制增容提供理论和实验支撑,也可以为废旧塑料污染提供一条切实可行的高质、无污染、低成本回收路线。
The miscibility issue is considered to be the top problem in the high-value recycling of waste polymers.In this work,by utilizing a self-made eccentric rotor extruder to supply elongational flow,the structural and properties evolution of PP/PE composites were studied.The effect of the rotation speeds and compositions was analyzed.Through SEM,it is confirmed that the elongational flow can force the immiscible PP/PE blends presenting a novel honeycomb structure.The tensile tests also reveal that PP/PE blends can be compatibilized by elongational flow.Moreover,the relationships between rotation speed,composition and structure,tensile strength of PP/PE blends were established.This work can supply several fundamental knowledge of the physical compatibilization of immiscible polymers,and also can pave a new avenue towards the high-value,low-cost and environmental-friendly recycling of waste polymers.
作者
黄照夏
瞿金平
Zhaoxia Huang;Jinping Qu(National Engineering Research Center of Novel Equipment for Polymer Processing,Key Laboratory of Polymer Processing Engineering,Ministry of Education,Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing,School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510641,China)
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2021年第1期8-15,共8页
Polymer Materials Science & Engineering
基金
国家重点研发计划(2019YFC1908200)
中国博士后科学基金(2019M652883)。
关键词
拉伸流场
聚丙烯
聚乙烯
不相容体系
elongational flow
polypropylene
polyethylene
immiscible blend
