| 用双螺杆挤出机进行熔体扩链的PUR-T结构与性能研究 |
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| 引用本文： | 曾晓知,杜秉公,韩克清,余木火.用双螺杆挤出机进行熔体扩链的PUR-T结构与性能研究[J].工程塑料应用,2004,32(2):33-36. |
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| 作者姓名： | 曾晓知 杜秉公 韩克清 余木火 |
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| 作者单位： | 东华大学材料学院,上海,200051;东华大学材料学院,上海,200051;东华大学材料学院,上海,200051;东华大学材料学院,上海,200051 |
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| 摘 要： | 以预聚物为扩链剂，用双螺杆挤出机在熔融状态下对热塑性聚氨酯弹性体(PUR—T)进行熔体扩链．用热重分析仪、动态热机械仪、差示扫描量热仪和扫描电镜研究了扩链后PUR—T的形态结构、拉伸性能、回弹性、热降解稳定性、热转变和动态力学性能。结果表明，用双螺杆挤出机进行熔体扩链是可行的，而且扩链后的PUR—T性能较扩链前优异。
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| 关 键 词： | 热塑性聚氨酯弹性体 双螺杆挤出机 熔体扩链 结构 性能 |
| 修稿时间： | 2003年10月27 |
STUDY ON THE STRUCTURE AND THE PROPERTY OF PUR-T PREPARED BY MELT CHAIN EXTENSION WITH TWIN-SCREW EXTRUDER |
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| Zeng Xiaozhi,Du Binggong,Han Keqing,Yu Muhuo.STUDY ON THE STRUCTURE AND THE PROPERTY OF PUR-T PREPARED BY MELT CHAIN EXTENSION WITH TWIN-SCREW EXTRUDER[J].Engineering Plastics Application,2004,32(2):33-36. |
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| Authors: | Zeng Xiaozhi Du Binggong Han Keqing Yu Muhuo |
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| Abstract: | A thermoplastic polyurethane elastomer was extended in the melt state through twin-screw extruder with prepolymer as chain extender. The morphology structure, tensile property, resilience, thermal degradation stability, and dynamic mechanical property were researched by Thermogravimetric Analyzer(TGA) , Dynamic Mechanical Analyzer(DMA) , Differential Scanning Calorimeter (DSC) and Scanning Electron Microscope( SEM). The results showed that the property of PUR-T was improved by the chain exten- |
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| Keywords: | thermoplastic polyurethane elastomer twin-screw extruder chain extension in the melting state structure property |
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