| 疏水SiO2气凝胶的常压制备及在建筑隔热涂料中的应用 |
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| 引用本文： | 刘红霞,陈松,贾铭琳,唐帆. 疏水SiO2气凝胶的常压制备及在建筑隔热涂料中的应用[J]. 涂料工业, 2011, 41(8): 64-67 |
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| 作者姓名： | 刘红霞 陈松 贾铭琳 唐帆 |
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| 作者单位： | 1. 盐城工学院化生学院,江苏盐城,224003
2. 上海丰慧节能环保科技有限公司,上海,201204 |
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| 基金项目： | 上海市南汇区产学研联合项目08NHCXY017 |
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| 摘 要： | 以廉价的工业级正硅酸乙酯为原料,经过酸碱两步催化制备二氧化硅凝胶,分别以三甲基氯硅烷(TMCS)/六甲基二硅氧烷(HMDSO)溶液和TMCS/n-C6H14溶液对凝胶进行改性,常压干燥下制得产品。用FT-IR、TEM、XRD等手段对样品进行表征,并考察了产品的疏水性能和在外墙涂料中的隔热性能。在相同的条件下,前者可以使凝胶溶剂交换和表面改性同时完成,而后者则不能。以TMCS/HMDSO改性所得产品为无定型非晶态结构,具有5～10 nm孔径。改性后的SiO2气凝胶具有较强的疏水性,在外墙建筑涂料中具有优良的隔热性能。
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| 关 键 词： | 二氧化硅气凝胶 表面改性 常压干燥 疏水 隔热 |
Preparation of Hydrophobic SiO2 Aeroge under Ambient Pressure and Its Application in Heat-Insulating Architectural Coatings |
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| Liu Hongxia,Chen Song,Jia Minglin,Tang Fan. Preparation of Hydrophobic SiO2 Aeroge under Ambient Pressure and Its Application in Heat-Insulating Architectural Coatings[J]. Paint & Coatings Industry, 2011, 41(8): 64-67 |
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| Authors: | Liu Hongxia Chen Song Jia Minglin Tang Fan |
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| Affiliation: | Liu Hongxia1,Chen Song1,Jia Minglin2,Tang Fan1 (1.Chemical and Biological Enginering College,Yancheng Institute of Technology,Yancheng,Jiangsu 224003,China,2.Shanghai Fenghui Saving Energy and Protecting Enviroment Co.Ltd.,Shanghai 201204,China) |
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| Abstract: | The title silica gel was prepared by two-step acid-base catalysis process using low cost industrial tetraethyl orthosilicate as precursor,the gel was modified by TMCS/HMDSO solution and TMCS/n-C6H14 solution respectively,which was then dried at ambient pressure.The products were characterized by use of FT-IR,TEM and XRD.The hydrophobic performance and heat insulation properties in exterior wall coatings were investigated.Under the same condition,the solvent exchange and surface modication on the former surf... |
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| Keywords: | silica aerogel surface modification ambient pressure drying hydrophobic heat-insulation |
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