Title:
A METHOD FOR PRODUCING A MICRON-SIZE SPHERICAL SILICA AEROGEL
Document Type and Number:
WIPO Patent Application WO/2018/124979
Kind Code:
A3
Abstract:
A method for producing a micron-size spherical silica aerogel having a selectable or controllable average particle size, the method includes producing a surface—modified silica sol by adding a first organosilane compound to a aqueous acid-silica sol, which comprises an inorganic acid and a water glass solution, with a pH less than 3, dispersive mixing a non-polar organic solvent, a second organosilane compound, and the surface-modified silica sol, at a selected stirring rate which is inversely related to an average particle size, without adding any surfactant or dispersant, a micron-size spherical silica hydrogel and further a hydrophobic micron-size spherical silica gel are then produced. Following by drying or stirring the hydrophobic micron-size spherical silica gel to obtain a controllable micron-size silica aerogel in a spherical and powder forms, respectively.
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Inventors:
YODYINGYONG SUPAN (TH)
Application Number:
PCT/TH2017/000086
Publication Date:
November 01, 2018
Filing Date:
December 08, 2017
Export Citation:
Assignee:
YODYINGYONG SUPAN (TH)
International Classes:
C01B33/158; C01B33/143; C01B33/148; C01B33/154
Domestic Patent References:
| WO2017171279A1 | 2017-10-05 |
Foreign References:
| US20130106008A1 | 2013-05-02 | |||
| US20130189521A1 | 2013-07-25 | |||
| US20160280557A1 | 2016-09-29 | |||
| CN101205067B | 2010-12-15 |
Other References:
See also references of EP 3562782A4
Attorney, Agent or Firm:
THAVARANUNT, Napawan et al. (TH)
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