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Scientia Silvae Sinicae ›› 2007, Vol. 43 ›› Issue (12): 106-111.doi: 10.11707/j.1001-7488.20071218

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Sol-Gel Method Fabricate SiO2 Aerogel Used in Function of Wood Modification

Li Jian1 Qiu Jian1,2 Liu Yixing1   

  1. 1 Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education,Northeast Forestry University Harbin 150040; 2. Faculty of Wood Science and Decoration Engineering,Southwest Forestry University Kunming 650224
  • Received:2006-04-06 Revised:1900-01-01 Online:2007-12-25 Published:2007-12-25

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Abstract:

Inorganic aerogels composites with wood can express virtue both of wood and nano inorganic aerogels. Wood-SiO2 aerogel nanocomposites were fabricated by Sol-Gel method and super critical dry. Silica gels used in function of wood modification was researched in this paper. Using silica gels were fabricated with tetraethoxysilane (TEOS), ethanol (EtOH), water and HCl/HF acid by controlling Sol-Gel condition and component.Three kinds of solution the molar ratio of TEOS/EtOH/H2O/HCl/HF is FU1=1.00∶15.35∶7.45∶0.02∶0.01,FU2=1.00∶5.43∶10.10∶0.02∶0.04,FU3=1.00∶5.47∶5.77∶0.02∶0.06,which the silica gels can be fabricated in 120 min. the silica gels were aging 1～3 d in-21 ℃ and then rised room temperature in 12 h.with of super critical dry the SiO2 aerogel nanocomposites were fabricated which used in function of wood modification.

Key words: Sol-Gel method, silica gels, nanostructure, wood-SiO2aerogel composites, function of wood modification