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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 PDF

Info

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
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2008/005570
Other languages
French (fr)
Other versions
WO2009038393A2 (en
Inventor
Mi Sun Yoo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEB CO Ltd
Original Assignee
NEB CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEB CO Ltd filed Critical NEB CO Ltd
Publication of WO2009038393A2 publication Critical patent/WO2009038393A2/en
Publication of WO2009038393A3 publication Critical patent/WO2009038393A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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.
PCT/KR2008/005570 2007-09-19 2008-09-19 Method for preparing surface-modified transparent bead type aerogel and aerogel prepared therefrom Ceased WO2009038393A2 (en)

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 Highly transparent granular airgel manufacturing method having permanent hydrophobicity and granular airgel 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 Ceased 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)

* Cited by examiner, † Cited by third party
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
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
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
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 silica 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
CN115845813B (en) * 2022-10-18 2024-07-09 电子科技大学长三角研究院(衢州) Elastic super-hydrophobic oleophylic MOF derived carbon/SiO2Preparation method of composite aerogel

Citations (4)

* Cited by examiner, † Cited by third party
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 Manufacturing method of airgel blanket

Patent Citations (4)

* Cited by examiner, † Cited by third party
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 Manufacturing method of airgel blanket

Also Published As

Publication number Publication date
KR20090030131A (en) 2009-03-24
KR100924781B1 (en) 2009-11-03
WO2009038393A2 (en) 2009-03-26

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