| 硅烷偶联剂KH-570对纳米二氧化硅的表面改性研究 |
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| 引用本文： | 刘琪,崔海信,顾微,林春梅,李颖. 硅烷偶联剂KH-570对纳米二氧化硅的表面改性研究[J]. 纳米科技, 2009, 6(3): 15-18 |
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| 作者姓名： | 刘琪 崔海信 顾微 林春梅 李颖 |
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| 作者单位： | 中国农业科学院农业环境与可持续发展研究所,北京,100081;中国农业科学院农业环境与可持续发展研究所,北京,100081;中国农业科学院农业环境与可持续发展研究所,北京,100081;中国农业科学院农业环境与可持续发展研究所,北京,100081;中国农业科学院农业环境与可持续发展研究所,北京,100081 |
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| 基金项目： | 国家“863”计划重大项目资助课题（2006AA10A203、2008AA100803）;中央级公益性科研院所基本科研业务费专项资金资助课题. |
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| 摘 要： | 为改善用作农药载体的纳米SiO2的分散性和疏水性,以硅烷偶联剂KH-570对纳米SiO2进行了表面改性,通过SEM、XRD、FTIR以及元素分析等表征方法对产物结构和性能进行了分析,结果表明,KH-570能够成功地对纳米SiO2进行改性,并且提高其分散性。最佳偶联改性的反应条件为：改性剂用量5%,改性时间5h。在此条件下,改性纳米SiO2的接枝率为11.7%。
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| 关 键 词： | 纳米二氧化硅 硅烷偶联剂 改性 |
Surface Modification of Nano-silica by Silane Coupling Agent KH-570 |
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| LIU Qi,CUI Hai-xin,GU Wei,LIN Chun-mei,LI Ying. Surface Modification of Nano-silica by Silane Coupling Agent KH-570[J]. , 2009, 6(3): 15-18 |
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| Authors: | LIU Qi CUI Hai-xin GU Wei LIN Chun-mei LI Ying |
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| Affiliation: | (Institute of Environment and Sustainable Development in Agricultural, Chinese Academy of Agricultural Sciences, Beijing 100081, China) |
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| Abstract: | The surface modification of nano-silica materials as pesticide carrier was realized with silane coupling agent KH-570 for the improvement of dispersivity and hydrophobicity. The surface modified nano-silica materials were characterized respectively by SEM, low-angle XRD, FTIR and clement analysis. The result showed that KH-570 can modificate nano-silica successfully and improve its dispersivity. The optimum surface modifiction conditions： mass fraction of KH- 570 is 5%; coupling reaction time is 5 h. Surface grafting ratio of nano-silica with KH-570 obtained under these conditions is 11.7%. |
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| Keywords: | nano-silica silane coupling agent modification |
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