| 聚丙烯/碳纳米管复合材料的结晶和介电行为 |
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| 引用本文： | 孙玉蓉,吴德峰,张明,吴亮.聚丙烯/碳纳米管复合材料的结晶和介电行为[J].高分子材料科学与工程,2009(6). |
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| 作者姓名： | 孙玉蓉 吴德峰 张明 吴亮 |
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| 作者单位： | 扬州大学化学化工学院;江苏省环境工程与环境材料重点实验室; |
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| 基金项目： | 江苏省青年科技创新人才启动项目(BK2007559) |
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| 摘 要： | 采用熔融共混制备了聚丙烯/碳纳米管复合材料(PP/MWCNTs)。利用场发射扫描电镜(FESEM)、差示扫描量热仪(DSC)、偏光显微镜(POM)、X射线衍射仪(XRD)及宽频介电仪(BDS)对复合体系的形态、非等温结晶行为、结晶结构以及介电行为进行了研究。结果表明,碳纳米管均匀分散于聚丙烯基体中,二者界面结合紧密;极少量碳纳米管的加入即对聚丙烯的结晶起显著的异相成核作用,促进聚丙烯α晶型的形成;此外,复合体系在导电逾渗阀值附近介电松弛行为显著加强。
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| 关 键 词： | 聚丙烯 多壁碳纳米管 复合材料 结晶 介电行为 |
Crystallization and Dielectric Behavior of Polypropylene/Carbon Nanotubes Composites |
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| SUN Yu-rong,WU De-feng,ZHANG Ming,WU Liang.Crystallization and Dielectric Behavior of Polypropylene/Carbon Nanotubes Composites[J].Polymer Materials Science & Engineering,2009(6). |
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| Authors: | SUN Yu-rong WU De-feng ZHANG Ming WU Liang |
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| Affiliation: | 1.School of Chemistry & Chemical Engineering;Yangzhou University;2.Provincial Key Laboratory of Environmental Material & Engineering;Yangzhou 225002;China |
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| Abstract: | Polypropylene/multi-walled carbon nanotube composites(PP/MWCNTs)were prepared directly by melt mixing.The morphology,crystallization and dielectric behavior of the composites were investigated by the field emission scanning electron microscope(FESEM),differential scanning calorimeter(DSC),polarized optical microscope(POM),X-ray diffractometer(XRD)and broadband dielectric spectrometer(BDS),respectively.The results show that MWCNTs present nice dispersion in the PP matrix.Very small addition of MWCNTs has rem... |
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| Keywords: | polypropylene multi-walled carbon nanotubes composites crystallization dielectric behavior |
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