ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Aerogel has its advantages of light density of 0.003-0.35 g/cm3 and its high specific surface area,600-1000m2/g, mean pore diameter ~20nm. However, aerogel has its disadvantages of fragility andhigh cost. To overcome the mechanical fragility, we synthesized aerogel composite blankets withglass wools by drying at ambient atmosphere. Colloidal silica sol was first prepared by ionexchanging sodium silicate through amberlite column. Then, glass wool was soaked into thepH-controlled silica aerogel and then gelated. Ageing of silica aerogel composite was conducted inpurified water and solvent exchange/surface modification was simultaneously processed in hexaneand TMCS solution. After drying at 60oC and heat-treatment at 230oC, we evaluated the propertiesof aerogel composite, its apparent density and specific surface area
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.544-545.673.pdf
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