KR960022337A - Manufacturing Method of Mullite Whiskers - Google Patents

Manufacturing Method of Mullite Whiskers Download PDF

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Publication number
KR960022337A
KR960022337A KR1019950044160A KR19950044160A KR960022337A KR 960022337 A KR960022337 A KR 960022337A KR 1019950044160 A KR1019950044160 A KR 1019950044160A KR 19950044160 A KR19950044160 A KR 19950044160A KR 960022337 A KR960022337 A KR 960022337A
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KR
South Korea
Prior art keywords
catalyst
silica
group
precursor
alumina
Prior art date
Application number
KR1019950044160A
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Korean (ko)
Other versions
KR100348009B1 (en
Inventor
정용근
김주영
Original Assignee
성재갑
주식회사 Lg 화학
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Application filed by 성재갑, 주식회사 Lg 화학 filed Critical 성재갑
Publication of KR960022337A publication Critical patent/KR960022337A/en
Application granted granted Critical
Publication of KR100348009B1 publication Critical patent/KR100348009B1/en

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    • 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
    • C01B33/20—Silicates
    • C01B33/26—Aluminium-containing silicates, i.e. silico-aluminates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/62227—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining fibres
    • C04B35/62231—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining fibres based on oxide ceramics
    • C04B35/6224—Fibres based on silica
    • C04B35/62245—Fibres based on silica rich in aluminium oxide
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Inorganic Fibers (AREA)

Abstract

본 발명은 깁사이트(Al(OH)3), 보헤마이트(A1OOH) 및 γ~알루미나의 군으로부터 선택된 적어도 하나를 알루미나원으로 하고, 침전실리카, 실리카샌드 및 퓸드실리카의 군으로부터 선택된 적어도 하나를 실리카원으로 하여 제조한 전구체에 촉매를 도입하여 900~1400℃의 온도에서 0.5~5시간동안 반응시키는 것을 특징으로 하는 뮬라이트 휘스커의 제조방법.The present invention uses at least one selected from the group of Gibbsite (Al (OH) 3 ), boehmite (A1OOH) and γ-alumina as the alumina source, and at least one selected from the group of precipitated silica, silica sand and fumed silica. A method for producing a mullite whisker, comprising introducing a catalyst into a precursor prepared as a silica source and reacting at a temperature of 900 to 1400 ° C. for 0.5 to 5 hours.

Description

뮬라이트 휘스커의 제조방법Manufacturing Method of Mullite Whiskers

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

Claims (5)

깁사이트(Al(OH)3), 보헤마이트(A1OOH) 및 γ-알루미나의 군으로부터 선택된 적어도 하나를 알루미나원으로 하고, 침전실리카, 실리카샌드 및 퓸드실리카의 군으로부터 선택된 적어도 하나를 실리카원으로 하여 제조한 전구체에 촉매를 도입하여 900~1400℃의 온도에서 0.5~5시간동안 반응시키는 것은 특징으로 하는 뮬라이트 휘스커의 제조방법.At least one selected from the group of gibbsite (Al (OH) 3 ), boehmite (A1OOH) and γ-alumina as the alumina source, and at least one selected from the group of precipitated silica, silica sand and fumed silica as the silica source The method of preparing a mullite whisker, characterized in that by introducing a catalyst to the precursor prepared by the reaction to react for 0.5 to 5 hours at a temperature of 900 ~ 1400 ℃. 제1항에 있어서, 상기 촉매를 전구체 제조시 같이 혼합하거나 열처리 반응 직전에 반응용기 내에 투입하거나, 열분해하여 기체상태로 반응장치에 도입함을 특징으로 하는 물라이트 휘스커의 제조방법.The method of claim 1, wherein the catalyst is mixed together during preparation of the precursor, introduced into the reaction vessel immediately before the heat treatment reaction, or pyrolyzed and introduced into the reactor in a gaseous state. 제1항 또는 제2항에 있어서, 상기 촉매가(NH4)2SiF6, NH4F, HF, AIF3및 CHF3군으로부터 선택된 적어도 하나를 사용함을 특징으로 하는 뮬라이트 휘스커의 제조방법.3. The method of claim 1, wherein the catalyst uses at least one selected from the group (NH 4 ) 2 SiF 6 , NH 4 F, HF, AIF 3, and CHF 3. 4 . 제3항에 있어서, 상기 촉매는 불소원자의 함유량이 전구체의 알루미늄 원자에 대해 0.2~3몰%가 되도록 도입함을 특징으로 하는 뮬라이트 휘스커의 제조방법.The method of claim 3, wherein the catalyst is introduced so that the content of the fluorine atom is 0.2 to 3 mol% with respect to the aluminum atom of the precursor. 제1항의 방법으로 제조된 뮬라이트휘스커를 브레이크 패드나 라이닝의 마찰재로서의 용도.Use of the mullite whisker produced by the method of claim 1 as a friction material for brake pads or linings. ※ 참고사항:최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950044160A 1994-12-30 1995-11-28 Method of making mullite whiskers KR100348009B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR19940039897 1994-12-30
KR1019940039897 1994-12-30
KR94-39897 1994-12-30

Publications (2)

Publication Number Publication Date
KR960022337A true KR960022337A (en) 1996-07-18
KR100348009B1 KR100348009B1 (en) 2002-11-13

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ID=37488805

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950044160A KR100348009B1 (en) 1994-12-30 1995-11-28 Method of making mullite whiskers

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115259846A (en) * 2022-07-13 2022-11-01 合肥工业大学 Ceramic material and preparation method thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4910172A (en) * 1989-02-08 1990-03-20 The United States Of America As Represented By The Secretary Of The Navy Preparation of mullite whiskers from AlF3, SiO2, and Al2 O3 powders
US5340516A (en) * 1989-07-28 1994-08-23 Engelhard Corporation Thermal shock and creep resistant porous mullite articles prepared from topaz and process for manufacture
JP3455554B2 (en) * 1992-12-24 2003-10-14 川鉄鉱業株式会社 Mullite whisker manufacturing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115259846A (en) * 2022-07-13 2022-11-01 合肥工业大学 Ceramic material and preparation method thereof

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Publication number Publication date
KR100348009B1 (en) 2002-11-13

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