| PP-g-MMA对PP/W力学性能及等温结晶动力学的影响 |
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| 引用本文： | 林水东,章汝平,肖幼英,吴粦华,江美莲.PP-g-MMA对PP/W力学性能及等温结晶动力学的影响[J].龙岩学院学报,2010,28(2). |
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| 作者姓名： | 林水东 章汝平 肖幼英 吴粦华 江美莲 |
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| 作者单位： | 1. 龙岩学院化学与材料学院,福建龙岩,364012
2. 龙岩三中,福建龙岩,354012 |
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| 基金项目： | 福建省自然基金计划资助项目(E0610001);;福建省科技厅资助项目(2007F5081) |
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| 摘 要： | 用差示扫描量热法(DSC)考察了聚丙烯(PP)、聚丙烯/硅灰石(PP/W)和聚丙烯/聚丙烯-g-甲基丙烯酸甲酯/硅灰石(PP/PP-g-MMA/W)的等温结晶过程。用Avrami方程对上述过程进行分析,n、K、t1/2、tmax、G1/2等参数表明,W和PP-g-MMA的掺入改变了PP的结晶成核和生长机理。用Lauritzen-Hoffman异相成核理论对PP球晶的生长速率进行了分析,△E数值表明,W有较强的成核活性,PP-g-MMA的掺入不仅进一步提高其成核活性,同时对PP大分子的扩散起阻碍作用。总之,PP-g-MMA对PP/W复合材料起增容作用,充分发挥了W的增强增韧效果。
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| 关 键 词： | 聚丙烯-g-甲基丙烯酸甲酯 聚丙烯/硅灰石 力学性能 等温结晶动力学 |
Effect of PP-g-MMA on Mechanical Properties and Isothermal Crystallization Kinetics of PP/W |
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| LIN Shui-dong,ZHANG Ru-ping,XIAO You-ying,WU Lin-hua,JIANG Mei-lian.Effect of PP-g-MMA on Mechanical Properties and Isothermal Crystallization Kinetics of PP/W[J].Journal of Longyan Univercity,2010,28(2). |
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| Authors: | LIN Shui-dong ZHANG Ru-ping XIAO You-ying WU Lin-hua JIANG Mei-lian |
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| Abstract: | The isothermal crystallization processes of polypropylene(PP),polypropylene/wollast-onite(PP/W) and polypropylene/polypropylene-g-methyl methacrylate/wollastonite(PP/PP-g-MMA/W) were investigated by DSC.The Avrami equation was used to describe the isothermal crystallization processes of the above systems.The parameter values of n,K,t1/2,tmax,G1/2 indicated that the mechanisms of nucleation and growth of crystallization were changed by mixing wollastonite and PP-g-MMA.The Lauritzen-Hoffman heterogeneous nucl... |
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| Keywords: | polypropylene-g-methyl methacrylate polypropylene/wollastonite mechanical properties isothermal crystallization kinetics |
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