| 国外抗冲共聚聚丙烯结构的研究 |
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| 引用本文： | 袁春海,袁秀芳,于建明,王雅玲.国外抗冲共聚聚丙烯结构的研究[J].合成树脂及塑料,2008,25(2):62-66. |
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| 作者姓名： | 袁春海 袁秀芳 于建明 王雅玲 |
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| 作者单位： | 中国石油化工股份有限公司北京燕山分公司聚丙烯事业部,北京,102501 |
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| 摘 要： | 利用升温淋洗分级柱、核磁共振波谱仪、差示扫描量热仪、凝胶渗透色谱仪和扫描电子显微镜等研究了国外抗冲共聚聚丙烯(PP)的组成、序列结构、相对分子质量及其分布、热转变、相态结构和宏观性能.结果表明,该抗冲共聚PP由均聚PP、乙丙橡胶和可结晶的乙丙共聚物组成,具有优良的机械性能;均聚PP为抗冲共聚物提供刚性,乙丙橡胶可提高抗冲共聚物的韧性;抗冲共聚物的相对分子质量呈多分散性,其分布较宽;乙丙橡胶的相对分子质量较大,以直径为1～2μm的微粒均匀分布在PP基体中,有利于提高抗冲共聚物的冲击强度;抗冲共聚物的熔点较高,耐热性好.
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| 关 键 词： | 抗冲共聚聚丙烯 乙丙橡胶 淋洗分级 序列结构 相态 性能 |
Characterization of impact propylene-ethylene copolymer |
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| Yuan Chunhai,Yuan Xiufang,Yu Jianming,Wang Yaling.Characterization of impact propylene-ethylene copolymer[J].China Synthetic Resin and Plastics,2008,25(2):62-66. |
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| Authors: | Yuan Chunhai Yuan Xiufang Yu Jianming Wang Yaling |
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| Affiliation: | Yuan Chunhai Yuan Xiufang Yu Jianming Wang Yaling (Polypropylene Division,Beijing Yanshan Branch,SINOPEC,Beijing 102501,China) |
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| Abstract: | This paper studied composition,sequential structure,relative molecular mass and its distribution,heat transition,phase structure and macroscopic properties of overseas impact ethylene-propylene copolymers by means of temperature rising elution fractionation (TREF),nuclear magnetic resonance spectrometer,differential scanning calorimeter,gel permeation chromatograph and scanning electron microscope.The results confirm that the impact copolymer consists of homopolypropylene,ethylene-propylene rubber (EPR) and... |
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| Keywords: | impact propylene-ethylene copolymer ethylene-propylene rubber temperature rising elution fractionation sequential structure phase state property |
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