郭清兵,谭赟华,陈江华,李翠金,肖乃玉.纳米SiO2表面接枝改性及其结构表征[J].表面技术,2010,39(3):6-9.
GUO Qing-bing,TAN Yun-hua,CHEN Jiang-hua,LI Cui-jin,XIAO Nai-yu.Grafting Modification and Structure Characterization of Nanosilica[J].Surface Technology,2010,39(3):6-9 |
| 纳米SiO2表面接枝改性及其结构表征 |
| Grafting Modification and Structure Characterization of Nanosilica |
| 投稿时间：2010-02-26 修订日期：2010-06-10 |
| DOI： |
| 中文关键词: 纳米SiO2粒子 接枝改性 结构表征 |
| 英文关键词:nano-SiO2particle grafting modification structure characterization |
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| 中文摘要: |
| 为了提高纳米SiO2粒子与环氧树脂基体的界面作用力,促进其在基体中的分散,选择苯乙烯和马来酸酐作为单体对纳米SiO2粒子进行化学接枝改性。用红外光谱和核磁共振法对接枝的纳米粒子进行表征,用透射电镜和动态光散射对粒子分散性进行研究,结果表明,接枝链通过化学键接在纳米粒子表面,使得粒子分散性能得到提高。对影响接枝效果的引发剂浓度、单体浓度、反应时间、引发剂引发时间等因素进行了优化,得到了纳米粒子接枝的最佳反应条件。 |
| 英文摘要: |
| In order to improve the interfacial effort between nano-SiO2and epoxy and to promote the dispersivity of nano-SiO2in it, the nano-SiO2was grafted with polystyrenemaleic anhydride through chemical grafting modification. Infrared spectra and nuclear magnetic resonance were used to characterize the structure of grafted nano-SiO2,while transmissionelectron microscopic and dynamic light scattering were used to study the dispersivity of grafted and un-grafted nano-SiO2. The experimental results show that the grafting chainswere grafted on the surface of nano-SiO2through chemical bonds,which leads to the improvement of its dispersivity. The optimum reaction conditions were gained by optimizing the reaction factors such asinitiator concentration, monomer concentration, reaction time and initiator lead time. |
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