中国塑料 ›› 2021, Vol. 35 ›› Issue (8): 125-130.DOI: 10.19491/j.issn.1001-9278.2021.08.018

• 加工与应用 • 上一篇    下一篇

扩链PBS的微孔发泡行为研究

薛钰1,2, 殷德贤1,2, 项鲁冰1,2, 周远1,2, 杨雪月1,2, 周洪福1,2()   

  1. 1.北京工商大学化学与材料工程学院,北京 100048
    2.塑料卫生与安全质量评价技术北京市重点实验室,北京 100048
  • 收稿日期:2021-05-18 出版日期:2021-08-26 发布日期:2021-08-27
  • 基金资助:
    大学生科学研究与创业行动计划 (G016)

Study on Microcellular Foaming Behavior of Chain⁃Extended Poly(butylene succinate)

XUE Yu1,2, YIN Dexian1,2, XIANG Lubing1,2, ZHOU Yuan1,2, YANG Xueyue1,2, ZHOU Hongfu1,2()   

  1. 1.College of Chemistry and Materials Engineering,Beijing Technology and Business University,Beijing 100048,China
    2.Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics,Beijing 100048,China
  • Received:2021-05-18 Online:2021-08-26 Published:2021-08-27
  • Contact: ZHOU Hongfu E-mail:zhouhongfu@th.btbu.edu.cn

摘要:

以聚丁二酸丁二醇酯(PBS)为基体,加入不同含量的扩链剂,通过熔融共混法制备扩链PBS样品。随后以超临界CO2作为物理发泡剂,通过釜压发泡法在87 ℃下对PBS进行物理发泡。结果表明,随着扩链剂含量的增加,PBS的结晶温度先升高后略微下降,结晶度略微提高,黏弹性改善;随着扩链剂含量的增加,泡孔尺寸和发泡倍率逐渐减小,泡孔密度逐渐增加;当扩链剂含量为8 %(质量分数,下同)时制备的扩链PBS微孔泡沫的泡孔尺寸为9.2 μm,泡孔密度为1.93×109 个/cm3

关键词: 聚丁二酸丁二醇酯, 扩链, 超临界二氧化碳, 发泡, 微孔

Abstract:

The chain?extended poly(butylene succinate) (CPBS) samples were prepared with different contents of chain extender through a melt blending method. As the content of chain extender increased, the crystallization temperature of PBS increased at first and then tended to decrease slightly. The crystallinity of PBS increased slightly, and its viscoelasticity was also improved. Supercritical CO2 was used as a physical foaming agent to prepare PBS foams at a foaming temperature of 87 °C. The experimental results indicated that the cell size and volume expansion ratio of the forms decreased gradually with an increase in the content of chain extender, but and their cell density increased gradually. A microcellular CPBS foam was successfully prepared at a chain extender content of 8 wt %, leading to a cell size of 9.2 μm and a cell density of 1.93×109 cells/cm3.

Key words: poly (butylene succinate), chain extension, supercritical carbon dioxide, foaming, microcellular

中图分类号: