| HDPE/SiO_2杂化材料的结晶行为 |
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| 引用本文： | 郁加华,王树平,龚方红.HDPE/SiO_2杂化材料的结晶行为[J].高分子材料科学与工程,2009(7). |
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| 作者姓名： | 郁加华 王树平 龚方红 |
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| 作者单位： | 江苏工业学院材料科学与工程系; |
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| 基金项目： | 江苏省高校自然科学基金资助项目(05KJB430024) |
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| 摘 要： | 通过熔融接枝反应将乙烯基三甲氧基硅烷(A-171)接枝到高密度聚乙烯(HDPE)分子链上,以四乙氧基硅烷(TEOS)为前驱体,加入接枝的HDPE中,通过溶胶-凝胶法(Sol-Gel)制备了HDPE/SiO2杂化材料。采用DSC分析,研究了SiO2对HDPE结晶行为的影响。结果表明,SiO2在HDPE中起到异相成核的作用,使HDPE的结晶温度提高、微晶尺寸分布减小。随降温速率增大,结晶峰变宽,结晶温度Tp向低温方向移动。非等温结晶动力学研究表明,在冷却速率范围5℃/min~20℃/min内,杂化材料异相成核,近似一维生长。
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| 关 键 词： | 高密度聚乙烯 二氧化硅 杂化材料 非等温结晶动力学 |
Crystallization Behavior Properties of HDPE/SiO_2 Hybrid Materials |
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| YU Jia-hua,WANG Shu-ping,GONG Fang-hong.Crystallization Behavior Properties of HDPE/SiO_2 Hybrid Materials[J].Polymer Materials Science & Engineering,2009(7). |
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| Authors: | YU Jia-hua WANG Shu-ping GONG Fang-hong |
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| Affiliation: | YU Jia-hua,WANG Shu-ping,GONG Fang-hong(Department of Materials Science and Engineering,Jiangsu Polytechnic University,Changzhou 213164,China) |
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| Abstract: | Vinyl trimethoxysilane(A-171) was grafted to chain of polyethylene(HDPE) via melt grafting reaction.The tetraethoxysilane which acted as precursor was mixed in grafted HDPE,HDPE/SiO2 hybrid materials were prepared by sol-gel process.The influence of nano-SiO2 on the crystallization behavior of HDPE was studied with differential scanning calorimetry(DSC).Results show that nano-SiO2?has an nucleating role on the crystallization,resulting in higher crystallization temperature,and lower the size distribution of... |
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| Keywords: | high density polyethylene nano-SiO2 hybrid materials non-isothermal crystallization kinetics |
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