| 近熔点挤出等规聚丙烯的微结构与力学性能的关系 |
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| 引用本文： | 赵元旭,刘忠柱,郑海丽,郑国强,刘春太. 近熔点挤出等规聚丙烯的微结构与力学性能的关系[J]. 上海塑料, 2013, 0(3): 35-38 |
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| 作者姓名： | 赵元旭 刘忠柱 郑海丽 郑国强 刘春太 |
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| 作者单位： | 郑州大学材料科学与工程学院材料成型及模具教育部重点实验室 |
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| 摘 要： | 分别在近熔点附近（167℃）和完全熔融温度（190℃）下挤出制备等规聚丙烯（iPP）片材。拉伸试验结果表明：在167℃挤出的iPP,其屈服强度比在190℃时挤出的提高了15.8%;拉伸强度和杨氏模量均有一定程度的提高。采用二维广角X射线衍射（2D-WAXD）、示差扫描量热法（DSC）和扫描电子显微镜（SEM）对微结构进行表征,并讨论了微结构与力学性能的关系。
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| 关 键 词： | 等规聚丙烯 力学性能 熔点 微结构 |
The Relationship Between Micro-structure and Mechanical Properties of iPP Extruded in Near Melt Point |
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| ZHAO Yuan-xu;LIU Zhong-zhu;ZHENG Hai-li;ZHENG Guo-qiang;LIU Chun-tai. The Relationship Between Micro-structure and Mechanical Properties of iPP Extruded in Near Melt Point[J]. Shanghai Plastics, 2013, 0(3): 35-38 |
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| Authors: | ZHAO Yuan-xu LIU Zhong-zhu ZHENG Hai-li ZHENG Guo-qiang LIU Chun-tai |
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| Affiliation: | ZHAO Yuan-xu;LIU Zhong-zhu;ZHENG Hai-li;ZHENG Guo-qiang;LIU Chun-tai;Key Laboratory of Advanced Material Processing and Mold of Ministry,Education, School of Material Science and Engineering,Zhengzhou University; |
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| Abstract: | The extruded iPP sheet was prepared at near melt point （167℃） and completeiy melted tem- perature （190℃）, respectively. The tensile test results showed that the yield strength of iPP which processed at the near melt point（167℃） increased hy 15.8% than that processed at the completely melt temperature （190℃）. Tensile strength and Young＇s modulus had also increased. The microstructure of two iPP sheets were characterized by two-dimensional wide-angle X-ray diffraction （2D-WAXD）, differ- ential scanning calorimetry （DSC） and scanning electron microscopy （SEM）, and the relationship be- tween microstructure and mechanical properties was discussed. |
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| Keywords: | iPP mechanical propery melt point microstructure |
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