稳定“海岛”结构诱导高强度PS/PPO开孔泡沫制备与性能研究

›› 2024, Vol. 38 ›› Issue (3): 49-53.

稳定“海岛”结构诱导高强度PS/PPO开孔泡沫制备与性能研究

姜帅华¹,李卓伦¹,芦浩凡¹,孙乙博¹,王向东¹,¹,陈士宏¹,²,武丽丽¹

1. 北京工商大学
2. 北京工商大学化学与材料工程学院

收稿日期:2024-01-06 修回日期:2024-01-22 出版日期:2024-03-26 发布日期:2024-03-26

Study on preparation and properties of high strength PS/PPO open cell foams induced by stabilized island structure

Received:2024-01-06 Revised:2024-01-22 Online:2024-03-26 Published:2024-03-26

摘要/Abstract

摘要： 采用熔融共混法制备了聚苯乙烯（PS）/聚苯醚（PPO）共混材料。通过控制加工温度，使得PPO以刚性粒子形式存在于共混物中，形成稳定“海岛”结构。以超临界CO2为发泡剂进行了釜压发泡，得到了高开孔率的PS开孔泡沫。研究了PPO含量对PS流变性能、热力学行为的影响以及稳定“海岛”结构对形成PS开孔泡沫的影响，对所得PS/PPO泡沫制品的泡孔尺寸、发泡倍率、开孔率及泡沫压缩性能进行了分析。结果表明，当发泡温度为158 ℃、压力为20 MPa、PPO含量为10份（质量份，下同）时，可以制备得到发泡倍率为37.5倍、开孔率为96.9 %的PS开孔泡沫。

关键词: 聚苯乙烯, 聚苯醚, 超临界二氧化碳, 发泡材料, 开孔泡沫

Abstract: Polystyrene （PS）/polyphenyl ether （PPO） blends were prepared by melt blending method. By controlling the processing temperature， PPO exists in the blend in the form of rigid particles， forming a stable “island” structure. By using supercritical carbon dioxide as blowing agent， the PS open cell foam with high porosity was obtained. The effect of PPO contents on the rheological properties and thermodynamic behavior of PS， and the effect of stable “island” structure on the formation of PS/PPO foam were studied. The cell size， foaming rate， opening rate and foam compression properties of PS/PPO foam products were analyzed. The results showed that when the foaming temperature was 158 ℃， the pressure was 20 MPa and the PPO content was 10 %， the PS open-cell foam with foaming ratio of 37.5 times and opening ratio of 96.9 % could be prepared.

Key words: polystyrene, polyphenyl ether, supercritical carbon dioxide, foaming material, open cell foam

姜帅华李卓伦芦浩凡孙乙博王向东陈士宏武丽丽. 稳定“海岛”结构诱导高强度PS/PPO开孔泡沫制备与性能研究[J]. , 2024, 38(3): 49-53.

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