中国塑料 ›› 2019, Vol. 33 ›› Issue (9): 50-56.DOI: 10.19491/j.issn.1001-9278.2019.09.009

• 材料与性能 • 上一篇    下一篇

增容作用对聚乳酸/高密度聚乙烯合金发泡行为的影响

李杨1,2,殷德贤1,2,朱敏1,2,周洪福1,2*,王向东1,2,叶志殷1,2   

  1. 1. 北京工商大学材料与机械工程学院
    2. 塑料卫生与安全质量评价技术北京市重点实验室
  • 收稿日期:2019-06-10 修回日期:2019-07-04 出版日期:2019-09-26 发布日期:2019-10-25
  • 基金资助:
    国家重点研发计划课题(2016YFB0302203);2019年研究生科研能力提升计划项目资助;国家自然科学基金(51703004)

Effect of Compatibilization on Foaming Behavior of PLA/PE-HD Blends

LI Yang1,2, YIN Dexian1,2, ZHU Min1,2, ZHOU Hongfu1,2*, WANG Xiangdong1,2, YE Zhiyin1,2   

  1. 1. School of Materials and Mechanical Engineering, Beijing Technology and Business University 2. Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics
  • Received:2019-06-10 Revised:2019-07-04 Online:2019-09-26 Published:2019-10-25

摘要: 以乙烯甲基丙烯酸缩水甘油酯共聚物(GEMA)为增容剂,采用熔融共混法制备了聚乳酸(PLA)/高密度聚乙烯(PE-HD)增容合金。以CO2为发泡剂进行釜压发泡,制备出PLA/PE-HD增容合金泡沫。结果表明,加入GEMA后,聚合物合金的结晶能力有所下降和流变性能略有提高;随着GEMA含量的增加,PE-HD分散相尺寸减小,数量增多,聚合物合金发泡样品的泡孔结构可以实现从复合泡孔到单一泡孔的转变。

关键词: 聚乳酸, 高密度聚乙烯, 合金, 釜压发泡, 增容

Abstract: The poly(lactic acid) (PLA)/high-density polyethylene (PE-HD) blends was prepared by a melt-mixing method with ethylene-glycidyl methacrylate copolymer (GEMA) as a compatibilizer, and then the blending foams were prepared in a stainless-steel autoclave with CO2 as a foaming agent. With the addition of GEMA, the crystallinity of PLA/PE-HD blends decreased but their rheological properties increased slightly. On the other hand, the size of PE-HD dispersed phase decreased and its number increased due to an increase in the content of GEMA. There was a transition from a complex cellular structure to the mono-porous cell one observed in the blending foams.

Key words: polylactic acid);highrdensitypolyethylene;blend;stainlesssteel autoclave foaming, compatibilization

中图分类号: