| 木粉聚丙烯复合材料的等温结晶动力学 |
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| 引用本文： | 郭垂根,王清文.木粉聚丙烯复合材料的等温结晶动力学[J].高分子材料科学与工程,2009(4). |
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| 作者姓名： | 郭垂根 王清文 |
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| 作者单位： | 东北林业大学生物质材料科学与技术教育部重点实验室;东北林业大学理学院黑龙江省阻燃材料分子设计与制备重点实验室; |
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| 基金项目： | 黑龙江省青年科学技术专项资金项目(QC07C21);;国家农业科技成果转化资金项目(2006GB23600450)资助 |
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| 摘 要： | 应用差示扫描量热法(DSC)研究了有无相容剂(m-TMI-PP)的木粉聚丙烯复合体系的等温结晶行为,采用Avrami方程处理等温结晶过程,计算结晶动力学参数。结果表明,随着结晶温度的升高,各体系的结晶速率下降,结晶速率常数K、n降低,半结晶时间t1/2增大。在同一结晶温度下,木粉起到成核剂的作用,提高了基体的结晶速率;m-TMI-PP的加入,使基体的结晶速率下降。纯PP的等温结晶过程具有异相成核与均相成核的机理,复合材料的等温结晶过程属于异相成核机理。
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| 关 键 词： | 木粉 聚丙烯 等温结晶 |
Kinetics of Isothermal Crystallization for Wood-Flour Polypropylene Composites |
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| GUO Chui-gen,WANG Qing-wen.Kinetics of Isothermal Crystallization for Wood-Flour Polypropylene Composites[J].Polymer Materials Science & Engineering,2009(4). |
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| Authors: | GUO Chui-gen WANG Qing-wen |
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| Affiliation: | 1.Key Laboratory of Bio-based Material Science and Technology of Ministry of Education;Northeast Forestry University;2.Heilongjiang Key Lab of Molecular Design and Preparation of Flame Retarded Materials;College of Science;Harbin 150040;China |
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| Abstract: | The kinetics of isothermal crystallization of wood flour/polypropylene composites with and without compatibilizer(m-TMI-PP) has been investigated by DSC,the Avrami equation has been used to analyze isothermal crystallization.It is shown that the crystallization rate and the parameter values of k,n are lower,the parameter values of the half-time for crystallization(t1/2) is higher when the isothermal crystallization temperature(Tc) is higher.In the same Tc,the presence of wood flour acts as nucleate and enha... |
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| Keywords: | wood-flour polypropylene isothermal crystallization |
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