Study on preparation of mesoporous silica aerogels with low density and high properties via ambient pressure drying

机译：通过环境压力干燥制备具有低密度和高性能的中孔二氧化硅气凝胶的研究

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The SiO_2 aerogels of low density was fabricated by ion exchange and sol-gel method on the basis of sodium silicate. The effect of pH, aging，addition of DCCA and annealed temperature on the gel time, aerogel density, porosity and the micro-structure was systemly studied. The results showed that when the pH is 5, aging was 30%Vol of TEOS/ethanol solution, the addition of DCCA was 1.5ml, the gel system was annealed at 50 for 84 h, 60 for 72h, the best quality of silica aerogels with low density.

机译：基于硅酸钠，通过离子交换和溶胶 - 凝胶法制造了低密度的SiO_2气凝胶。系统研究了pH，老化，添加DCCA和退火温度对凝胶时间，气凝胶密度，孔隙率和微结构的影响。结果表明，当pH为5时，老化是TEOS /乙醇溶液的30％Vol，添加DCCA为1.5ml，凝胶系统在50℃下退火84小时，60℃，72h，最佳质量的二氧化硅气凝胶质量密度低。

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《International Conference on Advances in Materials and Manufacturing Processes》|2011年||共6页
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Gangqiang Geng; Weitao Bi; Yu Zhang; Dengke Sun;
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中图分类 TG14-532;
关键词
Water glass; Mesoporous; Aerogel; Silica; Ion exchange; Ambient pressure drying;

机译：水玻璃;介孔;气凝胶;硅胶;离子交换;环境压力干燥;

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1. Low thermalconductive, transparent and hydrophobic ambient pressure dried silica aerogels with various preparation conditions using sodium silicate solutions [J] . A. Parvathy Rao, A. Venkateswara Rao, Uzma K. H. Bangi Journal of Sol-Gel Science and Technology . 2008,第1期

机译：使用硅酸钠溶液的各种制备条件下的低导热，透明和疏水性常压干燥二氧化硅气凝胶
2. Low thermalconductive, transparent and hydrophobic ambient pressure dried silica aerogels with various preparation conditions using sodium silicate solutions [J] . A. Parvathy Rao, A. Venkateswara Rao, Uzma K. H. Bangi Journal of Sol-Gel Science and Technology . 2008,第1期

机译：使用硅酸钠溶液在各种制备条件下的低导热，透明和疏水性常压干燥二氧化硅气凝胶
3. Production of low-density sodium silicate-based hydrophobic silica aerogel beads by a novel fast gelation process and ambient pressure drying process [J] . Pradip B. Sarawade, Jong-Kil Kim, Askwar Hilonga Solid state sciences . 2010,第5期

机译：通过新型快速胶凝工艺和常压干燥工艺生产低密度硅酸钠基疏水性二氧化硅气凝胶珠
4. Study on preparation of mesoporous silica aerogels with low density and high properties via ambient pressure drying [C] . Gangqiang Geng, Weitao Bi, Yu Zhang, International Conference on Advances in Materials and Manufacturing Processes . 2011

机译：通过环境压力干燥制备具有低密度和高性能的中孔二氧化硅气凝胶的研究
5. THE PREPARATION AND PROPERTIES OF ACID-CATALYZED SILICA AEROGEL. [D] . SCHMITT, WILLIAM JAMES. 1982

机译：酸催化二氧化硅气凝胶的制备及性能。
6. A new route for preparation of sodium-silicate-based hydrophobic silica aerogels via ambient-pressure drying [O] . Uzma K H Bangi, A Venkateswara Rao, A Parvathy Rao 2008

机译：通过常压干燥制备基于硅酸钠的疏水性二氧化硅气凝胶的新途径
7. Facile preparations and controlling mechanisms of ambient pressure dried high performance silica aerogel monoliths [O] . 邵再东 2014

机译：常压干燥的高性能二氧化硅气凝胶整料的简便制备和控制机理
8. Preparation and characterization of transparent, monolithic silica aerogels with low density [R] . Haereid, S. 1993

机译：低密度透明单片二氧化硅气凝胶的制备和表征

Study on preparation of mesoporous silica aerogels with low density and high properties via ambient pressure drying

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