| 硅灰石形貌对聚丙烯结晶行为的影响 |
| |
| 引用本文： | 严满清,唐龙祥,刘春华,王平华. 硅灰石形貌对聚丙烯结晶行为的影响[J]. 现代塑料加工应用, 2008, 20(6) |
| |
| 作者姓名： | 严满清 唐龙祥 刘春华 王平华 |
| |
| 作者单位： | 1. 安徽大学化工学院,安徽,合肥,230039
2. 合肥工业大学高分子科学与工程系,安徽,合肥,230009 |
| |
| 基金项目： | 国家自然科学基金，安徽省教育厅青年教师基金 |
| |
| 摘 要： | 采用熔融共混法制备了聚丙烯（PP）／硅灰石复合材料，并对其结晶行为进行研究。用X-射线衍射（XRD）研究了硅灰石的加入及类型对PP的晶体尺寸及类型的影响。结果显示，硅灰石的加入不改变PP的晶型，仍为α晶，而晶粒尺寸变小，表明硅灰石有异相成核作用。相比较而言，针状硅灰石比颗粒状硅灰石的异相成核作用更明显。采用差示扫描量热仪（DSC）在各种不同冷却速率下对复合材料的非等温结晶动力学过程进行研究，并用Jeziorny法来描述这些样品的非等温结晶过程。在相同的冷却速率下，半结晶时间（t′1/2）、结晶速率常数（Zc）等数据表明复合材料的结晶速率比纯PP的快，说明硅灰石具有异相成核作用，与颗粒硅灰石相比，针状硅灰石异相成核作用更明显。
|
| 关 键 词： | 聚丙烯 硅灰石 形貌 复合材料 结晶行为 非等温结晶动力学 |
Effect of Wollastonite Morphology on Crystallization Behaviors of Polypropylene |
| |
| Yan Manqing,Tang Longxiang,Liu Chunhua,Wang Pinghua. Effect of Wollastonite Morphology on Crystallization Behaviors of Polypropylene[J]. Modern Plastics Processing and Applications, 2008, 20(6) |
| |
| Authors: | Yan Manqing Tang Longxiang Liu Chunhua Wang Pinghua |
| |
| Affiliation: | 1.School of Chemistry;Anhui University;Hefei;Anhui;230039;2.Department of Polymer Science and Engineering;Hefei University of Technology;230009 |
| |
| Abstract: | PP/wollastonite composites were prepared through melt blending method,and the crystallization behaviors of the composites were studied.The effects of addition and type of wollastonite on the crystal type and size of PP were investigated by means of XRD.The results show that the addition of wollastonite do not change the crystal type,however,the crystal size of PP of composites becomes smaller than that of neat PP,which indicates that wollastonite has heterogeneous nucleation role.In comparison with granular... |
| |
| Keywords: | polypropylene wollastonite morphology composite crystalline behavior nonisothermal crystallization kinetics |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
