Phase-separation induced synthesis of superhydrophobic silica aerogel powders and granules

2019 ◽  
Vol 279 ◽  
pp. 120971 ◽  
Author(s):  
Riyong Liu ◽  
Jin Wang ◽  
Yu Du ◽  
Jianhe Liao ◽  
Xuetong Zhang
Keyword(s):  
Phase Separation ◽  
Silica Aerogel ◽  
Superhydrophobic Silica ◽  
Silica Aerogel Powders

Fast Synthesis of Spherical Silica Aerogel Powders by Emulsion Polymerization from Water Glass

2018 ◽  
Vol 3 (4) ◽  
pp. 1257-1261 ◽  
Author(s):  
Kyoung-Jin Lee ◽  
Young H. Kim ◽  
Je K. Lee ◽  
Hae-Jin Hwang
Keyword(s):  
Emulsion Polymerization ◽  
Silica Aerogel ◽  
Water Glass ◽  
Spherical Silica ◽  
Fast Synthesis ◽  
Silica Aerogel Powders

Durable Superhydrophobic Silica Aerogel Coating from Hydrophobic Gel Synthesis

2019 ◽  
Vol 824 ◽  
pp. 156-162
Author(s):  
Thitirat Piyawongsiri ◽  
Chanapat Ammarinponchai ◽  
Supan Yodyingyong ◽  
Tshering Nidup ◽  
Darapond Triampo
Keyword(s):  
Silica Aerogel ◽  
Solid Material ◽  
Contact Angles ◽  
Tetraethyl Orthosilicate ◽  
Scanning Electron Micrographs ◽  
Abrasion Test ◽  
Static Contact ◽  
Superhydrophobic Silica ◽  
Surface Modified ◽  
Scanning Electron

Silica aerogel is a nanostructured porous solid material. It has a low bulk density, low thermal conductivity and can be hydrophobic. In this work, hydrophobic silica gel, a material used to form aerogel, is used instead of its powder form to avoid ultrafine air particles pollution. It is used to surface modified materials to make the materials superhydrophobic and still withstand physical abrasion that ordinary aerogel would not able to do. The superhydrophobic silica aerogel coating was designed by mixing the hydrophobic gel with DOW CORNING® 2405 resin as binder and varying DOWSIL™ Z-6137 silane and tetraethyl orthosilicate (TEOS). The coating is characterized by the static contact angles (CA) and abrasion test. Scanning electron micrographs of different coating compositions were investigated. Results show that the hydrophobic gel mixed with resin and Z-6137 silane have contact angle >179º. Superhydrophobic silica aerogel coating can be utilized as material coatings for glass, fiber, polymer, etc.

scholarly journals Phase transfer agents facilitate the production of superinsulating silica aerogel powders by simultaneous hydrophobization and solvent- and ion-exchange

2020 ◽  
Vol 381 ◽  
pp. 122421 ◽  
Author(s):  
Shanyu Zhao ◽  
Ana Stojanovic ◽  
Emanuele Angelica ◽  
Olivier Emery ◽  
Daniel Rentsch ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Silica Aerogel ◽  
Phase Transfer ◽  
Silica Aerogel Powders ◽  
Transfer Agents

A fast synthesis of silica aerogel powders-based on water glass via ambient drying

2017 ◽  
Vol 82 (2) ◽  
pp. 594-601 ◽  
Author(s):  
Yuelei Pan ◽  
Song He ◽  
Xudong Cheng ◽  
Zhi Li ◽  
Congcong Li ◽  
...  
Keyword(s):  
Silica Aerogel ◽  
Water Glass ◽  
Ambient Drying ◽  
Fast Synthesis ◽  
Silica Aerogel Powders
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