| 有机改性硅溶胶及疏水膜的制备 |
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| 引用本文： | 赵英健,宋永才. 有机改性硅溶胶及疏水膜的制备[J]. 材料科学与工程学报, 2005, 23(3): 419-421 |
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| 作者姓名： | 赵英健 宋永才 |
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| 作者单位： | 国防科学技术大学航天与材料工程学院,湖南,长沙,410073;国防科学技术大学航天与材料工程学院,湖南,长沙,410073 |
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| 摘 要： | 以硅酸钠为原料,经水解制得了硅酸低聚体(PS),再以六甲基二硅氮烷(HMDS)与PS反应引入硅三甲基,制得了有机改性硅溶胶(PSH),并采用浸提法在玻璃上涂胶制备了疏水膜.本文采用FT-IR、1H-NMR和TG-DTA对硅溶胶进行了分析表征.研究结果表明:聚硅酸中羟基被硅三甲基取代,制得的PSH热稳定性较好,涂膜玻璃具有疏水性且疏水性随着HMDS投料量的增加而增强.
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| 关 键 词： | 聚硅酸 硅溶胶 薄膜 疏水性 |
| 文章编号： | 1004-793X(2005)03-0419-03 |
| 修稿时间： | 2004-07-13 |
Preparation of Organically Modified Silica Sols and Hydrophobic Films |
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| ZHAO Ying-jian,SONG Yong-cai. Preparation of Organically Modified Silica Sols and Hydrophobic Films[J]. Journal of Materials Science and Engineering, 2005, 23(3): 419-421 |
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| Authors: | ZHAO Ying-jian SONG Yong-cai |
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| Abstract: | Poly(silitic acid) was prepared by acid-catalyzed hydrolysis of sodium silicate, and then modified by Hexamethyldisilazane(HMDS) to obtain silica sols modified organically, which were deposited on cleaned glass by dip-coating to make glass hydrophobic. Silica sols modified organically were characterized by FT-IR, 1H-NMR and TG-DTA. The result shows that -OH groups on poly(silitic acid) have been partly replaced by -Si(CH_3)_3 groups, silica sols modified organically have thermal stability, the coating glass has good hydrophobicity which increases with the quantity of HMDS added to poly(silitc acid). |
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| Keywords: | poly(silitic acid) silica sols thin films hydrophobic |
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