METHOD OF FABRICATING SUPERHYDROPHOBIC SILICA CHAIN POWDERS

Disclosed herein is a method of fabricating superhydrophobic silica-based powder, comprising: forming a hydrogel by adding an organosilane compound having alkaline pH and an inorganic acid to a non-ion-exchanged water glass solution, which is a precursor, to form a mixed solution and then surface-mo...

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Bibliographische Detailangaben
Hauptverfasser:	JUNG, IN-SOON, JOUNG, YOUNGUL, BHAGAT, SHARAD, D, PARK, HO SUNG, LIM, JONG-HYUN, JEE, SEUNG-YONG, PARK, JONGUL
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES CHEMISTRY COMPOUNDS THEREOF DYES INORGANIC CHEMISTRY METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-METALLIC ELEMENTS PAINTS POLISHES PREPARATION OF CARBON BLACK TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
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Beschreibung
Zusammenfassung:	Disclosed herein is a method of fabricating superhydrophobic silica-based powder, comprising: forming a hydrogel by adding an organosilane compound having alkaline pH and an inorganic acid to a non-ion-exchanged water glass solution, which is a precursor, to form a mixed solution and then surface-modifying and gelating the mixed solution; dipping the hydrogel into a nonpolar solvent to solvent-exchange the hydrogel and remove sodium ions (Na+) therefrom; and drying the solvent-exchanged hydrogel through a fluidized bed drying method under normal pressure or reduced pressure to fabricate aerogel powder. According to the method of fabricating a superhydrophobic silica-based powder of the present invention, the process thereof is very simple and economical. Therefore, the present invention is expected to be industrially important.