中国塑料 ›› 2022, Vol. 36 ›› Issue (10): 71-76.DOI: 10.19491/j.issn.1001-9278.2022.10.011

• 加工与应用 • 上一篇    下一篇

CO2在PPO和PS共混物中的溶解与扩散行为研究

乔世泽, 郭梦浩, 何亚东, 信春玲()   

  1. 北京化工大学机电工程学院,北京 100029
  • 收稿日期:2022-05-05 出版日期:2022-10-26 发布日期:2022-10-27
  • 通讯作者: 信春玲(1973—),女, 副教授,从事聚合物发泡成型机理及成型工艺、纤维增强热塑性复合材料机理及工艺、聚合物高性能改性工艺及机制研究,xincl@mail.buct.edu.cn
    E-mail:xincl@mail.buct.edu.cn

Solubility and diffusion behavior sof CO2 in PPO and PS blends

QIAO Shize, GUO Menghao, HE Yadong, XIN Chunling()   

  1. College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China
  • Received:2022-05-05 Online:2022-10-26 Published:2022-10-27
  • Contact: XIN Chunling E-mail:xincl@mail.buct.edu.cn

摘要:

以超临界CO2为发泡剂,采用质量衰减法测试发泡剂在聚苯醚(PPO)/聚苯乙烯(PS)中的溶解扩散性,在静态条件下系统研究了工艺参数及PPO/PS组成对CO2溶解度与扩散系数的影响,建立了温度、压力及PPO含量与CO2溶解度的定量关系。结果表明,CO2在PPO/PS中的溶解度随着PPO含量的增加而增加,随着压力的增加和温度的降低而增大;扩散系数随着PPO含量的增加而减小,随着温度的升高和饱和压力的增大而增大。

关键词: 聚苯醚, 聚苯乙烯, 超临界二氧化碳, 溶解度, 扩散系数

Abstract:

In this paper, supercritical CO2 was used as a foaming agent to investigate its dissolution and diffusivity in PPO/PS blends through a weight decay method. The effects of process parameter and PPO/PS composition on the solubility and diffusion coefficient of CO2 were systematically studied under static conditions. The quantitative relationship between the temperature, pressure, and PPO content and the CO2 solubility was established. The results indicated that the solubility of CO2 in PPO/PS blends increased with an increase in the PPO content and pressure but a decrease in temperature. The diffusion coefficient decreased with an increase in the PPO content but increased with an increase in temperature and saturation pressure.

Key words: polyphenylene ether, polystyrene, supercritical carbon dioxide, solubility, diffusion coefficient

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