| 化学降解对IPP流变性能的影响 |
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| 引用本文： | 董擎之,李文刚.化学降解对IPP流变性能的影响[J].华东理工大学学报(自然科学版),1999,25(6):591-594. |
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| 作者姓名： | 董擎之 李文刚 |
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| 作者单位： | 华东理工大学石油化工学院!上海200540(董擎之)，中国纺织大学材料科学与工程学院重点实验室!上海200051(李文刚) |
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| 摘 要： | 通过双螺杆混炼挤出造粒，制备了加有不同添加量的化学发改进剂的一系列试样，采用凝胶渗透色谱，ＨＡＡＫＥ流变 等，研究了ＩＰＰ经化学降解的相对分子质量，分子量分布，讨论了解ＩＰＰ分子量分布变窄的机理，分析了熔体在相对静止状态及受力流动时分子运动及流变性能的影响因素。
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| 关 键 词： | 等规聚丙烯 化学降解 流变性能 聚丙烯 |
Effects of Chemical Degradation on the Rheological Behaviour of IPP |
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| DONG Qing zhi ,LI Wen gang.Effects of Chemical Degradation on the Rheological Behaviour of IPP[J].Journal of East China University of Science and Technology,1999,25(6):591-594. |
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| Authors: | DONG Qing zhi LI Wen gang |
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| Institution: | DONG Qing zhi 1*,LI Wen gang 2 |
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| Abstract: | A series of chemical degraded IPP samples were prepared with twin screw blend machine. Their molecular weight, distribution of molecular weight and rheological behaviour have been studied with GPC and HAAKE rheogonimeter. The mechanism of MWD changing to narrower of IPP after chemical degradation is discussed. The effects on rheological behaviour and on molecular movement when melt is in relative static condition or is flowing at pressure are analyzed. It is discovered that the effects of chemical degradation on reological behaviour and on MWD are similar in the mechanism to a certain respect. |
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| Keywords: | isotactic polypropylene chemical degradation mechanism rheological behaviour |
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