| PS/PETG共混物的流变性能和发泡行为研究 |
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| 引用本文： | 刘本刚,董帅,王向东,刘燕,汪文昭,杜中杰,张晨.PS/PETG共混物的流变性能和发泡行为研究[J].中国塑料,2014,28(8):72-77. |
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| 作者姓名： | 刘本刚 董帅 王向东 刘燕 汪文昭 杜中杰 张晨 |
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| 作者单位： | 1. 北京化工大学碳纤维及功能高分子教育部重点实验室2. 北京工商大学材料与机械工程学院,轻工业塑料加工应用研究所3. 中国石油天然气管道局第五工程公司 |
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| 摘 要： | 采用密炼机制备了聚苯乙烯(PS)和聚对苯二甲酸乙二醇酯1,4环己二甲醇酯(PETG)共混物；以超临界二氧化碳(CO2)为物理发泡剂，采用釜压法制备了PS和PS/PETG共混物发泡试样。通过旋转流变仪、扫描电子显微镜对PS和PS/PETG共混物的流变性能和泡沫的泡孔形态进行了表征。结果表明，加入PETG没有对PS的流变性能产生明显的影响，但对PS泡沫的泡孔形态影响显著，加入10 %的PETG时，其平均泡孔直径由纯PS的2268 μm降至758 μm，泡孔密度由345×108个/cm3提高到447×109个/cm3，泡孔尺寸分布明显变窄，说明PETG在PS中起到明显的气泡成核作用。
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| 关 键 词： | 聚苯乙烯 聚对苯二甲酸乙二醇酯-1 4-环己二甲醇酯 共混物 流变性能 发泡行为 泡孔密度 泡孔尺寸分布 |
| 收稿时间： | 2014-10-14 |
Rheological and Foaming Behavior of PS/PETG Blends |
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| LIU Bengang;DONG Shuai;WANG Xiangdong;LIU Yan;WANG Wenzhao;DU Zhongjie;ZHANG Chen.Rheological and Foaming Behavior of PS/PETG Blends[J].China Plastics,2014,28(8):72-77. |
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| Authors: | LIU Bengang;DONG Shuai;WANG Xiangdong;LIU Yan;WANG Wenzhao;DU Zhongjie;ZHANG Chen |
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| Affiliation: | LIU Bengang;DONG Shuai;WANG Xiangdong;LIU Yan;WANG Wenzhao;DU Zhongjie;ZHANG Chen;Key Laboratory of Carbon Fiber and Functional Polymers,Ministry of Education,Beijing University of Chemical Technology;Institute of Plastics Processing and Application of Light Industry,School of Materials Science and Engineering,Beijing Technology and Business University;No.Five Construction Co,China Petroleum Pipeline Bureau; |
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| Abstract: | Polystyrene and poly (ethylene terephthalate glycol) (PS/PETG)blends were prepared by an internal mixer.PS and PS/PETG foams were prepared by the batch method using super critical CO2 as the foaming agent.The rheological properties and cellular morphology were characterized by dynamic rotational rheometer and scanning electron microscope. The results showed that the addition of PETG has no significant effect on the rheological properties of PS ,but obvious effect on the cell size morphology of PS. The average cell diameter decreased from 22.68 μm to 7.58 μm and the cell density increased from 3.45×108cell/cm3to 4.47×109cell/cm3 when adding 10 % PETG into PS. The cell distribution also became narrow. Thus PETG can serve as the nucleation agent when blended with PS. |
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