| EFFECTS OF COUPLING AGENTS ON THE CRYSTALLIZATION BEHAVIOR OF PP/T-ZnOw COMPOSITES |
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| 作者姓名： | Yong Wang Zheng-bao He Zuo-wan Zhou |
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| 作者单位： | [1]Key Laboratory of Advanced Technologies of Materials, Ministry of Education; School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China [2]State Key Laboratory, of Polymer Materials Engineering （Sichuan University）, Chengdu 610065, China |
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| 摘 要： | The objectives of this paper are to understand the crystallization behavior of polypropylene(PP)composites with surface modified tetra-needle-shaped zinc oxide whisker(T-ZnOw).T-ZnOw was surface modified with different coupling agents,such as silane coupling agents(KH-550,KH-560)and titanate coupling agent(NDZ-105),in order to improve the compatibility between PP and T-ZnOw.DSC and POM were used to characterize the melt and crystallization behavior and the crystalline structures of the composites,respectively.The results show that the surface modified T-ZnOw acts as a nucleating agent of PP crystallization,depending on the coupling agent used for modification.KH-550 and KH-560 have more apparent role in improving the interfacial interaction than NDZ-105 and induce PP crystallization at higher temperature and with smaller spherulites size.The results also suggest that the crystallization behavior depends on not only the content of coupling agent,but also the content of the surface modified T-ZnOw used in the composites.
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| 关 键 词： | 结晶过程 偶联剂 化学分子 复合材料 |
| 收稿时间： | 2006-10-11 |
| 修稿时间： | 2006-10-11 |
EFFECTS OF COUPLING AGENTS ON THE CRYSTALLIZATION BEHAVIOR OF PP/T-ZnOw COMPOSITES |
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| Yong Wang Zheng-bao He Zuo-wan Zhou.EFFECTS OF COUPLING AGENTS ON THE CRYSTALLIZATION BEHAVIOR OF PP/T-ZnOw COMPOSITES[J].Chinese Journal of Polymer Science,2007,0(6):565-572. |
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| Authors: | Yong Wang Zheng-bao He Zuo-wan Zhou |
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| Institution: | Sichuan University |
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| Abstract: | The objectives of this paper are to understand the crystallization behavior of polypropylene (PP) composites with surface modified tetra-needle-shaped zinc oxide whisker (T-ZnOw). T-ZnOw was surface modified with different coupling agents, such as silane coupling agents (KH-550, KH-560) and titanate coupling agent (NDZ-105), in order to improve the compatibility between PP and T-ZnOw. DSC and POM were used to characterize the melt and crystallization behavior and the crystalline structures of the composites, respectively. The results show that the surface modified T-ZnOw acts as a nucleating agent of PP crystallization, depending on the coupling agent used for modification. KH-550 and KH-560 have more apparent role in improving the interfacial interaction than NDZ-105 and induce PP crystallization at higher temperature and with smaller spherulites size. The results also suggest that the crystallization behavior depends on not only the content of coupling agent, but also the content of the surface modified T-ZnOw used in the composites. |
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| Keywords: | PP/T-ZnOw Crystallization behaviour Coupling agent CRYSTALLIZATION BEHAVIOR COUPLING AGENTS EFFECTS content role improving interfacial interaction higher temperature spherulites size depending coupling nucleating agent modification results show crystallization used characterize melt |
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