稳定“海岛”结构诱导高强度PS/PPO开孔泡沫制备与性能研究  

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

作　　者：姜帅华 李卓伦 芦浩凡 孙乙博 王向东[1] 陈士宏[1] 武丽丽[1] JIANG Shuaihua;LI Zhuolun;LU Haofan;SUN Yibo;WANG Xiangdong;CHEN Shihong;WU Lili(College of Light Industry Science and Engineering,Beijing Technology and Business University,Beijing 100048,China)

机构地区：[1]北京工商大学轻工科学与工程学院,北京100048

出　　处：《中国塑料》2024年第3期49-53,共5页China Plastics

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CO_(2)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。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 us⁃ing 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 proper⁃ties 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 open⁃ing ratio of 96.9%could be prepared.

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 

分 类 号：TQ328.4[化学工程—合成树脂塑料工业]