一字平行同向三螺杆挤出机制备WPP/WPE共混物的性能研究  

Study on Properties of WPP/WPE Blends Prepared by a Parallel and Co-rotating Three-screw Extruder

作　　者：何和智[1,2,3] 黄运智 HE Hezhi;HUANG Yunzhi(School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510000,China;Key Laboratory of Polymer Molding and Processing Engineering of Ministry of Education,Guangzhou 510000,China;Guangdong Key Laboratory of Advanced Polymer Manufacturing Technology and Equipment,Guangzhou 510000,China)

机构地区：[1]华南理工大学机械与汽车工程学院,广州510000 [2]聚合物成型加工工程教育部重点实验室,广州510000 [3]广东省高分子先进制造技术及装备重点实验室,广州510000

出　　处：《上海塑料》2022年第1期20-25,共6页Shanghai Plastics

基　　金：十三五国家重点研发计划项目(2019YFC1908202)。

摘　　要：以废弃餐盒及废弃快递袋为例,使用一字平行同向三螺杆挤出机制备了不同比例的废弃聚丙烯(WPP)、废弃聚乙烯(WPE)共混物。通过力学性能测试、微观形貌表征及热性能分析,对比研究了不同废弃聚烯烃共混物的性能。结果表明:WPE能够提升WPP/WPE共混物的韧性,WPP能够提升WPP/WPE共混物的拉伸强度和弹性模量,WPP的含量对WPP/WPE共混物的结晶行为影响更大。一字平行同向三螺杆挤出机能够改善两相不相容体系共混时的混合混炼效果。Taking waste lunch boxes and waste express bags as examples,blends of waste polypropylene(WPP)and waste polyethylene(WPE)with different proportions were prepared by a parallel co-rotating three-screw extruder.The properties of different waste polyolefin blends were studied by mechanical property test,micro morphology characterization and thermal performance analysis.The results show that WPE can improve the toughness of WPP/WPE blends,WPP can improve the tensile strength and elastic modulus of WPP/WPE blends,and the content of WPP has a greater impact on the crystallization behavior of WPP/WPE blends.The parallel co-rotating three-screw extruder can improve the mixing effect of two-phase incompatible systems.

关 键 词：废弃聚烯烃 一字平行同向三螺杆挤出机 相分散 混合混炼 

分 类 号：TQ325.1[化学工程—合成树脂塑料工业]