WO2009038393A3 - Method for preparing surface-modified transparent bead type aerogel and aerogel prepared therefrom - Google Patents
Method for preparing surface-modified transparent bead type aerogel and aerogel prepared therefrom Download PDFInfo
- Publication number
- WO2009038393A3 WO2009038393A3 PCT/KR2008/005570 KR2008005570W WO2009038393A3 WO 2009038393 A3 WO2009038393 A3 WO 2009038393A3 KR 2008005570 W KR2008005570 W KR 2008005570W WO 2009038393 A3 WO2009038393 A3 WO 2009038393A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bead type
- water glass
- wet gel
- silica wet
- aerogel
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/157—After-treatment of gels
- C01B33/159—Coating or hydrophobisation
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/152—Preparation of hydrogels
- C01B33/154—Preparation of hydrogels by acidic treatment of aqueous silicate solutions
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/157—After-treatment of gels
- C01B33/158—Purification; Drying; Dehydrating
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Silicon Compounds (AREA)
Abstract
There is provided a method for preparing a surface-modified transparent bead type aerogel having permanent hydrophobicity without any of additional impurity removal and washing processes by removing a sodium component from a water glass in advance, and a surface-modified bead type aerogel prepared therefrom. The method for preparing a surface-hydrophobisized bead type aerogel includes: removing a sodium component from a water glass solution, in which a water glass is diluted to a concentration of 5 to 15 % (percent) by weight, by contacting a cation exchange resin with the water glass solution at a room temperature; forming a silica wet gel by adjusting pH of the sodium-free water glass solution to a pH range of 4-6 and aging the sodium-free water glass solution; cutting the formed silica wet gel into the form of beads, when necessary; adding the cut silica wet gel to a silylation solution comprising a hydrophobic alcohol solvent and a silylating agent, and simultaneously performing silylation and solvent substitution processes on the cut silica wet gel; and drying the silica wet gel. Also, the bead type aerogel prepared from the method has a permanent hydrophobicity, and a particle size of 0.1 to 0.5 cm (centimenters). The bead type aerogel may be used for an insulating panel of a LNG carrier, transparent dual glass, etc. since it has porosity, high transparency and high specific surface area.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2007-0095477 | 2007-09-19 | ||
KR1020070095477A KR100924781B1 (en) | 2007-09-19 | 2007-09-19 | Method for Preparing Surface-Modified Transparent Bead Type Aerogel and Aerogel Prepared Therefrom |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2009038393A2 WO2009038393A2 (en) | 2009-03-26 |
WO2009038393A3 true WO2009038393A3 (en) | 2009-05-07 |
Family
ID=40468619
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2008/005570 WO2009038393A2 (en) | 2007-09-19 | 2008-09-19 | Method for preparing surface-modified transparent bead type aerogel and aerogel prepared therefrom |
Country Status (2)
Country | Link |
---|---|
KR (1) | KR100924781B1 (en) |
WO (1) | WO2009038393A2 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102190308B (en) * | 2010-03-03 | 2012-11-14 | 中国石油化工股份有限公司 | Method for preparing microspherical silica gel |
CN103359747A (en) * | 2013-06-25 | 2013-10-23 | 安徽敬业纳米科技有限公司 | Method for in situ modification of nano silica in batches |
EP2832690A1 (en) * | 2013-08-02 | 2015-02-04 | EMPA Eidgenössische Materialprüfungs- und Forschungsanstalt | Method for making an aerogel material |
CN104649494B (en) * | 2015-01-30 | 2016-05-04 | 浙江奇彩环境科技股份有限公司 | A kind of method of processing of Ludox waste water and coproduction sodium salt |
CN105197942A (en) * | 2015-09-10 | 2015-12-30 | 安徽龙泉硅材料有限公司 | Cyclic utilization method for residual heat in silicon dioxide aerogel production |
CN105753434A (en) * | 2016-01-29 | 2016-07-13 | 卓达新材料科技集团有限公司 | Glass wool/silicon-aluminum aerogel composite heat insulation board |
CN105752999A (en) * | 2016-01-29 | 2016-07-13 | 卓达新材料科技集团有限公司 | Preparation method of sodium metaaluminate modified and resin purified water glass aerogel |
CN105776967A (en) * | 2016-01-29 | 2016-07-20 | 卓达新材料科技集团有限公司 | Preparation method for fiber needled felt-enhanced sodium metaaluminate-modified aerogel |
FR3094975B1 (en) * | 2019-04-10 | 2022-11-18 | Keey Aerogel | Process for the synthesis of a hydrophobic silica airgel of the "one pot" type from a silica precursor |
CN111304910B (en) * | 2020-02-14 | 2021-08-20 | 中南大学 | Ceramic fiber/hydrophobic silicon dioxide aerogel composite material and preparation method thereof |
WO2022160174A1 (en) * | 2021-01-28 | 2022-08-04 | 华豹(天津)新材料科技发展股份有限公司 | Thermal-insulation aerogel vacuum composite board and preparation process therefor |
CN114234455B (en) * | 2021-12-28 | 2023-01-24 | 山东阳晨新能源有限公司 | Stainless steel heat collector |
CN114538452B (en) * | 2022-03-15 | 2022-10-25 | 金三江(肇庆)硅材料股份有限公司 | Silica wet gel with narrow particle size distribution and preparation method and application thereof |
CN115845813A (en) * | 2022-10-18 | 2023-03-28 | 电子科技大学长三角研究院(衢州) | Elastic super-hydrophobic oleophylic MOF/SiO 2 Preparation method of composite aerogel |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR19980701661A (en) * | 1995-01-27 | 1998-06-25 | 악커만, 쿤켈 | Method for preparing modified airgel and use thereof |
JPH10316414A (en) * | 1997-03-14 | 1998-12-02 | Matsushita Electric Works Ltd | Production of aerogel |
US6197270B1 (en) * | 1996-12-20 | 2001-03-06 | Matsushita Electric Works, Ltd. | Process for producing aerogel |
KR100710887B1 (en) * | 2006-04-21 | 2007-04-27 | 요업기술원 | Method for manufacturing aerogel blanket |
-
2007
- 2007-09-19 KR KR1020070095477A patent/KR100924781B1/en active IP Right Grant
-
2008
- 2008-09-19 WO PCT/KR2008/005570 patent/WO2009038393A2/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR19980701661A (en) * | 1995-01-27 | 1998-06-25 | 악커만, 쿤켈 | Method for preparing modified airgel and use thereof |
US6197270B1 (en) * | 1996-12-20 | 2001-03-06 | Matsushita Electric Works, Ltd. | Process for producing aerogel |
JPH10316414A (en) * | 1997-03-14 | 1998-12-02 | Matsushita Electric Works Ltd | Production of aerogel |
KR100710887B1 (en) * | 2006-04-21 | 2007-04-27 | 요업기술원 | Method for manufacturing aerogel blanket |
Also Published As
Publication number | Publication date |
---|---|
KR20090030131A (en) | 2009-03-24 |
WO2009038393A2 (en) | 2009-03-26 |
KR100924781B1 (en) | 2009-11-03 |
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