Production of low-density sodium silicate-based hydrophobic silica aerogel beads by a novel fast gelation process and ambient pressure drying process

2010 ◽  
Vol 12 (5) ◽  
pp. 911-918 ◽  
Author(s):  
Pradip B. Sarawade ◽  
Jong-Kil Kim ◽  
Askwar Hilonga ◽  
Hee Taik Kim
Keyword(s):  
Sodium Silicate ◽  
Silica Aerogel ◽  
Ambient Pressure ◽  
Ambient Pressure Drying ◽  
Low Density ◽  
Drying Process ◽  
Gelation Process ◽  
Hydrophobic Silica

Superhydrophobic sodium silicate based silica aerogel prepared by ambient pressure drying

2013 ◽  
Vol 141 (1) ◽  
pp. 570-575 ◽  
Author(s):  
Zaidong Shao ◽  
Fengzuan Luo ◽  
Xuan Cheng ◽  
Ying Zhang
Keyword(s):  
Sodium Silicate ◽  
Silica Aerogel ◽  
Ambient Pressure ◽  
Ambient Pressure Drying

Hydrophobic silica aerogel derived from wheat husk ash by ambient pressure drying

2015 ◽  
Vol 78 (1) ◽  
pp. 60-67 ◽  
Author(s):  
Shi-Wei Liu ◽  
Qi Wei ◽  
Su-Ping Cui ◽  
Zuo-Ren Nie ◽  
Meng-Hao Du ◽  
...  
Keyword(s):  
Silica Aerogel ◽  
Ambient Pressure ◽  
Ambient Pressure Drying ◽  
Hydrophobic Silica ◽  
Wheat Husk

Role of oxalic acid in structural formation of sodium silicate-based silica aerogel by ambient pressure drying

2017 ◽  
Vol 85 (2) ◽  
pp. 302-310 ◽  
Author(s):  
Ha-Yoon Nah ◽  
Vinayak G. Parale ◽  
Hae-Noo-Ree Jung ◽  
Kyu-Yeon Lee ◽  
Chang-Hyun Lim ◽  
...  
Keyword(s):  
Oxalic Acid ◽  
Sodium Silicate ◽  
Silica Aerogel ◽  
Ambient Pressure ◽  
Ambient Pressure Drying ◽  
Structural Formation

Highly flexible silica aerogels derived from methyltriethoxysilane and polydimethylsiloxane

2015 ◽  
Vol 39 (10) ◽  
pp. 7832-7838 ◽  
Author(s):  
Liang Zhong ◽  
Xiaohong Chen ◽  
Huaihe Song ◽  
Kang Guo ◽  
Zijun Hu
Keyword(s):  
Ambient Pressure ◽  
Silica Aerogels ◽  
Ambient Pressure Drying ◽  
Low Density ◽  
Rapid Synthesis ◽  
Hydrophobic Silica ◽  
Highly Hydrophobic

The rapid synthesis of low-density, highly hydrophobic silica aerogels was performedviaambient pressure drying.

Preparation and Characterization of Nanoporous Silica Aerogel Granules on The Basis of Water Glass Via Ambient Pressure Drying Method

2012 ◽  
Vol 59 (2) ◽  
Author(s):  
Ehsan Amirjan ◽  
Omid Mirzaee ◽  
Mohammad Reza Soleimani Dorcheh ◽  
Ali Soleimani Dorcheh
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Silica Aerogel ◽  
Water Glass ◽  
Ambient Pressure ◽  
Nanostructured Material ◽  
Ambient Pressure Drying ◽  
High Porosity ◽  
Hydrophobic Silica

A crack-free silica aerogel monolith is a nanostructured material with so many surprising properties such as high specific surface area, high porosity, low dielectric constant, low density and outstanding heat insulation properties that were fabricated from a cheap water glass derived silicic acid solution.In this research , the OH surfaces of the wet gel were modified using a HMDZ/n-hexane or TMCS/n-hexane mixture followed by solvent exchange from water to n-hexane. The obtained surface modified wet gel was dried at different temperature under ambient pressure.The properties of hydrophobic silica aerogels synthesized by this new route were investigated by scanning electron microscopy (SEM), differential temperature analysis (DTA) and Fourier-transform infrared spectroscopy (FT-IR).The results showed that 20 wt% HMDZ as surface modifier and 75 °C as drying temperature resulted an acceptable hydrophobic silica aerogel with the density of 0.15 gr/cm³ and specific surface area of about 520 m²/gr.

Hydrophobic Silica Aerogel Prepared In-situ by Ambient Pressure Drying and Its Thermal Stability

2009 ◽  
Vol 25 (09) ◽  
pp. 1811-1815 ◽  
Author(s):  
LI Gui-An ◽  
◽  
◽  
ZHU Ting-Liang ◽  
YE Lu-Yuan ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Silica Aerogel ◽  
Ambient Pressure ◽  
Ambient Pressure Drying ◽  
Hydrophobic Silica
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