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| 石墨烯/聚丙烯复合材料的等温结晶动力学研究 | |
| 引用本文： | 杨旭宇,陈建文. 石墨烯/聚丙烯复合材料的等温结晶动力学研究[J]. 塑料科技, 2012, 40(10): 36-39 |
| 作者姓名： | 杨旭宇 陈建文 |
| 作者单位： | 湖北汽车工业学院材料工程系,湖北十堰,420000 |
| 摘 要： | 采用差示扫描量热仪(DSC)研究了石墨烯(RGO)/聚丙烯(PP)复合材料的等温结晶行为。结果表明:对于纯PP和RGO/PP复合材料,结晶温度(Tc)的提高将导致结晶速率(G1/2)变慢、绝对结晶度(Xc)提高;PP和RGO/PP复合材料的等温结晶在相当大的范围内符合Avrami方程;同纯PP相比,RGO/PP复合材料的G1/2相对增加,而结晶活化能相对减小,这意味着RGO对PP起到了外加成核剂的作用,促进了PP的结晶。 |
| 关 键 词： | 聚丙烯 石墨烯 复合材料 等温结晶 结晶动力学 |
Study on Isothermal Crystallization Kinetics of PP/Reduced Graphene Oxide Composites |
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| Yang Xuyu , Chen Jianwen. Study on Isothermal Crystallization Kinetics of PP/Reduced Graphene Oxide Composites[J]. Plastics Science and Technology, 2012, 40(10): 36-39 | |
| Authors: | Yang Xuyu Chen Jianwen |
| Affiliation: | Department of Materials Engineering,Hubei University of Automotive Technology,Shiyan 420000,China |
| Abstract: | The isothermal crystallization behavior of reduced graphene oxide(RGO)/polypropylene(PP) composites were investigated by differential scaning calorimetry(DSC).The results show that:the crystallization time extends and the absolute crystallization degree improves for both pure PP and RGO/PP with the increase of crystallization temperature.Avrami equation is valid for analyzing the isothermal crystallization of pure PP and RGO/PP within a wide range.The crystallization rate of RGO/PP composites is higher and the crystallization activation energy is lower than those of pure PP,which means that RGO serves as a nucleating agent and then promotes crystallization on PP. |
| Keywords: | PP Reduced graphene oxide Composites Isothermal crystallization Crystallization kinetics |
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