[1]王立艳*,于 超.常压干燥法制备SiO2气凝胶及表征[J].吉林建筑大学学报,2020,(04):58-62.
 WANG Li-yan*,YU Chao.Fabrication and characterization of SiO2 aerogel by ambient pressure drying[J].Journal of Jilin Jianzhu University,2020,(04):58-62.
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常压干燥法制备SiO2气凝胶及表征(/HTML)
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《吉林建筑大学学报》[ISSN:2095-8919/CN:22-1413/TU]

卷:
期数:
2020年04期
页码:
58-62
栏目:
工程科技
出版日期:
2020-08-20

文章信息/Info

Title:
Fabrication and characterization of SiO2 aerogel by ambient pressure drying
文章编号:
2095-8919(2020)04-0058-05
作者:
王立艳*于 超
吉林建筑大学 建筑节能技术工程实验室,长春 130118
Author(s):
WANG Li-yan*YU Chao
WANG Li-yan*,YU ChaoEngineering laboratory of building energy saving technology,Jilin Jianzhu university,Changchun 130118,China
关键词:
SiO2气凝胶水玻璃常压干燥
Keywords:
SiO2 aerogelsodium silicateambient pressure drying
分类号:
TQ 174.4
文献标志码:
A
摘要:
以水玻璃为硅源,采用常压干燥法制备了SiO2气凝胶. 探究了凝胶反应pH值、改性剂中三甲基氯硅烷(TMCS)用量对SiO2气凝胶性能的影响. 当凝胶反应pH值为6、TMCS与凝胶的体积百分比为60%时, SiO2气凝胶综合性能最佳, 表观密度为0.017 8 g/cm3, 孔隙率为91.9%. 该气凝胶是一种非晶态无定形结构, 孔径小于50 nm, 具有较强的疏水性和优异的热稳定性.
Abstract:
SiO2 aerogel is prepared by ambient pressure drying with sodium silicate as silicon source.The effects of pH value of gel reaction and the amount of trimethylchlorosilane(TMCS)in modifier on the properties of SiO2 aerogel are investigated.When pH value is 6,volume percentage of TMCS to hydrogel is 60%,SiO2 aerogel has the best comprehensive performance,the apparent density is 0.017 8 g/cm3,and the porosity is 91.9%.The as-prepared SiO2 aerogel has amorphous structure,and the aperture is less than 50 nm.In addition,it has strong hydrophobicity and excellent thermal stability.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2020-05-26
基金项目:吉林省科技发展计划项目(20180520217JH,20170520152JH); 吉林省发改委产业技术研究开发项目(2019C059-2).
作者简介:王立艳(1974~),女,吉林省德惠市人,教授,博士.E-mail:845986718@qq.com.
更新日期/Last Update: 2020-08-20