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- W1504889726 abstract "Silica wet gels were prepared from water glass (29 wt% SiO₂) by using Amberlite as a ion exchange resin. After washing in distilled water, the wet gels were further aged in a solution of TEOS/EtOH to strengthen of 3-dimensional network structure. As increase TEOS content in aging solution, BET surface area and porosity of the ambient dried silica aerogels were significantly decreased, and average pore diameter was also decreased 30 ㎚ to ?10 ㎚. Also, higher density and compressive strength were obtained in case of higher TEOS content. This is due to precipitation of SiO₂ nano particles by TEOS. Hence, TEOS addition plays an important role of both strengthening and stiffness of silica wet gel network. By adding over 30 vol% TEOS, a crack-free monolithic silica aerogel tiles were obtained and its density, compressive strength, and thermal conductivity were shown 0.232 g/㎤, 7.3㎫, and 0.029W/mK, respectively." @default.
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- W1504889726 date "2007-03-31" @default.
- W1504889726 modified "2023-10-15" @default.
- W1504889726 title "Fabrication and Network Strengthening of Monolithic Silica Aerogels Using Water Glass" @default.
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- W1504889726 doi "https://doi.org/10.4191/kcers.2007.44.3.162" @default.
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