| 茂金属聚乙烯/茂金属乙烯-丙烯共聚物共混微观相结构与力学性能 |
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| 引用本文： | 陈绪煌,余鹏,黄碧伟,龙鹏.茂金属聚乙烯/茂金属乙烯-丙烯共聚物共混微观相结构与力学性能[J].高分子材料科学与工程,2011(10):62-65. |
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| 作者姓名： | 陈绪煌 余鹏 黄碧伟 龙鹏 |
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| 作者单位： | 湖北工业大学化学与环境工程学院; |
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| 基金项目： | 湖北工业大学人才基金资助项目(2007D00001) |
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| 摘 要： | 采用密炼机制备了不同组成的茂金属聚乙烯/茂金属乙烯-丙烯共聚物(mPE/mEP)共混体系,利用在线取样-显微分析的方法研究了不同组成mPE/mEP共混体系的微观相态结构,在研究相态结构的基础上,研究了体系的力学性能。结果表明,mPE/mEP共混物呈现明显的两相结构,当mPE体积含量在50%~60%范围内,共混体系形成双连续相,其他组分含量时,形成"海-岛"结构形貌。共混物的拉伸强度与共混体系微观相形态的变化有关,断裂伸长率随着mPE含量的增加由2360%降至550%,拉伸模量随着mPE含量的增加由3.5MPa增至102MPa。
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| 关 键 词： | 茂金属聚乙烯 茂金属乙烯-丙烯共聚物 相结构 性能 |
Microscopic Phase Structure and Mechanical Properties of Metallocene Polyethylene/Metallocene Ethylene-Propylene Elastomer Blends |
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| Xuhuang Chen,Peng Yu,Biwei Hunag,Peng Long.Microscopic Phase Structure and Mechanical Properties of Metallocene Polyethylene/Metallocene Ethylene-Propylene Elastomer Blends[J].Polymer Materials Science & Engineering,2011(10):62-65. |
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| Authors: | Xuhuang Chen Peng Yu Biwei Hunag Peng Long |
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| Affiliation: | Xuhuang Chen,Peng Yu,Biwei Hunag,Peng Long(School of Chemical and Environmental Engineering,Hubei Universityof Technology,Wuhan 430068,China) |
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| Abstract: | Different metallocene polyethylene/metallocene catalyst ethylene-propylene copolymers(mPE/mEP) blend compositions were prepared in mixer.Online-sampling-microscope was employed to study the microscopic phase structure of different compositions of mPE/mEP blends.Besides the structure and morphology of mPE/mEP blends,the mechanical property was also studied.The results show that the two-phase structure is distinctly observed in mPE/mEP blends,the morphology of blends shows co-continuous phase when mPE content... |
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| Keywords: | metallocene polyethylene metallocene ethylene-propylene phase structure properties |
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