中国塑料 ›› 2023, Vol. 37 ›› Issue (9): 19-27.DOI: 10.19491/j.issn.1001-9278.2023.09.004

• 材料与性能 • 上一篇    下一篇

高发泡倍率PBAT泡沫的制备及回弹性能的探究

焦洋1,2, 王龙震1,2, 蔡卓瑞1,2, 刘荣昊1,2, 张玉霞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.中国轻工业聚合物发泡材料加工与应用重点实验室,北京 100048
  • 收稿日期:2023-05-23 出版日期:2023-09-26 发布日期:2023-09-18
  • 通讯作者: 张玉霞(1965-),女,副教授,从事高性能塑料薄膜、聚烯烃发泡材料及可生物降解塑料等研究,zhangyux@th.btbu.edu.cn
    E-mail:zhangyux@th.btbu.edu.cn

Study on preparation and resilience of PBAT foams with high volume expansion ratio

JIAO Yang1,2, WANG Longzhen1,2, CAI Zhuorui1,2, LIU Ronghao1,2, ZHANG Yuxia1,2(), ZHOU Hongfu1,2   

  1. 1.College of Chemistry and Materials Engineering,Beijing Technology and Business University,Beijing 100048,China
    2.Key Laboratory of Processing and Application of Polymeric Foams of China National Light Industry Council,Beijing 100048,China
  • Received:2023-05-23 Online:2023-09-26 Published:2023-09-18
  • Contact: ZHANG Yuxia E-mail:zhangyux@th.btbu.edu.cn

摘要:

提出了一种绿色、简单、可行的方法来解决聚对苯二甲酸己二酸丁二醇酯(PBAT)高发泡倍率泡沫的皱缩问题。首先将扩链剂(CE)、泡孔稳定剂(GMS)与PBAT进行熔融共混,然后进行超临界二氧化碳发泡。结果表明,CE的加入使储能模量提高了3个数量级,复数黏度提高了2个数量级;随着GMS含量的增加,PBAT泡沫的尺寸稳定性逐渐提高,当CE和GMS的含量分别是2 %和1.8 %时,发泡倍率达到23.1倍,收缩率8 %,回弹率90 %,成功制备出具有良好回弹性和尺寸稳定性的高发泡倍率的PBAT泡沫。

关键词: 聚己二酸?对苯二甲酸丁二醇酯, 扩链, 超临界二氧化碳, 发泡, 高发泡倍率, 回弹

Abstract:

In this paper, a green, simple, and feasible method was developed for solving the shrinking problem of poly(butylene adipate⁃butylene terephthalate) (PBAT) foams with a high volume expansion ratio. Firstly, a chain extender (CE) and a cell stabiliser (GMS) were melt blended with PBAT, and then supercritical CO2 was used to prepare PBAT foams. The rheological test results indicated that the addition of CE increased the energy⁃storage modulus by 3 orders of magnitude and the complex viscosity by 2 orders of magnitude. The dimensional stability of the PBAT foams increased gradually with an increase in the GMS content. The PBAT foams obtained an expansion ratio of 23.1 at a CE content of 2 wt% and a GMS content of 1.8 wt%, and their shrinkage rate and resilience rate was 8 % and 90 %, respectively. This indicated the successful preparation of the PBAT foams with a high expansion ratio, and excellent resilience, and good dimensional stability.

Key words: poly (butylene adipate?butylene terephthalate), chain extension, supercritical carbon dioxide, foaming, high volume expansion ratio, resilience

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