| 原位交联改性PP/POE共混物的等温结晶行为 |
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| 引用本文： | 郭云霞,任星林,王标兵,胡国胜.原位交联改性PP/POE共混物的等温结晶行为[J].高分子材料科学与工程,2010(3):46-49. |
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| 作者姓名： | 郭云霞 任星林 王标兵 胡国胜 |
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| 作者单位： | 中北大学材料科学与工程学院高分子与生物工程研究所; |
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| 基金项目： | 山西省自然科学基金资助项目(94012);;山西省青年科技研究基金项目(200602011)资助 |
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| 摘 要： | 采用热塑性聚烯烃弹性体(POE)作为增韧材料,以过氧化二异丙苯(DCP)为交联剂制备了PP/POE共混物。利用差示扫描量热仪(DSC)和偏光显微镜(PLM)研究了PP/POE共混物等温结晶行为,并用Avrami方程分析了PP/POE共混物结晶动力学。结果表明,POE的加入能起到异相成核的作用,加快了PP的结晶成核速率。Avrami指数在1.93～3.09,DCP的引入对聚丙烯(PP)的成核与生长机理影响不大,但其原位交联作用阻碍了PP分子链的运动,使得PP结晶速率降低,结晶时间延长。
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| 关 键 词： | 聚丙烯 热塑性聚烯烃弹性体 等温结晶 过氧化二异丙苯 |
Isothermal Crystallization Behavior of In-Situ Crosslinking Modified PP/POE Composites |
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| GUO Yun-xia,REN Xing-lin,WANG Biao-bing,HU Guo-sheng.Isothermal Crystallization Behavior of In-Situ Crosslinking Modified PP/POE Composites[J].Polymer Materials Science & Engineering,2010(3):46-49. |
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| Authors: | GUO Yun-xia REN Xing-lin WANG Biao-bing HU Guo-sheng |
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| Affiliation: | College of Materials Science and Engineering;Institute of Macromolecule and Bioengineering;North University of China;Taiyuan 030051;China |
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| Abstract: | Polypropylene(PP)was toughened by polyolefin elastomer(POE).Dicumyl peroxide(DCP)was used as cross-linking agent.Isothermal crystallization behavior of PP and PP/POE alloy were investigated by differential scanning calorimetry(DSC)and polarized optical microscopy(PLM).The isothermal crystallization kinetics were analyzed by the Avrami equation.The results indicate that POE has the heterogeneous nucleation effcet on PP,and the crystallization nucleating rate of the blends is quickened.The Arvami exponent is ... |
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| Keywords: | PP POE isothermal crystallization DCP |
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