KR960022336A - Porous vacuum forming insulation and its manufacturing method - Google Patents

Porous vacuum forming insulation and its manufacturing method Download PDF

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KR960022336A
KR960022336A KR1019940040693A KR19940040693A KR960022336A KR 960022336 A KR960022336 A KR 960022336A KR 1019940040693 A KR1019940040693 A KR 1019940040693A KR 19940040693 A KR19940040693 A KR 19940040693A KR 960022336 A KR960022336 A KR 960022336A
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weight
alumina
parts
silica
zirconia
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KR970008732B1 (en
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곽상주
박학성
최승규
한훈
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석강봉
주식회사 금 강
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
    • C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
    • C04B35/80—Fibres, filaments, whiskers, platelets, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/021—Feeding the unshaped material to moulds or apparatus for producing shaped articles by fluid pressure acting directly on the material, e.g. using vacuum, air pressure
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    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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    • C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
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    • 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
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/6303—Inorganic additives
    • C04B35/6316—Binders based on silicon compounds
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    • 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
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    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/0051—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity
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    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
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    • 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
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    • C04B2235/52—Constituents or additives characterised by their shapes
    • C04B2235/5208—Fibers
    • C04B2235/5216—Inorganic
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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
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  • Organic Chemistry (AREA)
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  • Chemical Kinetics & Catalysis (AREA)
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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Insulation (AREA)

Abstract

본 발명은 지르코니아가 첨가된 알루미늄-실리카계 섬유에 무기질 결합제로서 콜로이달 실리카 또는 콜로이달 알루미나를, 유기 결합제로서 메틸셀룰로즈 또는 폴리아클릴아미드를, 무기질 충진제로서 알루미나 또는 규회석을 혼합하여서 된 수성 슬러리 상태의 혼합용액을 농도 조절후 진공성형하고 이를 건조후 소성하여 단열재를 제조하는 방법과 단열재에 관한 것이다.The present invention is an aqueous slurry state by mixing colloidal silica or colloidal alumina as an inorganic binder, methylcellulose or polyacrylamide as an organic binder, and alumina or wollastonite as an inorganic filler to an aluminum-silica fiber added with zirconia. It relates to a method and a heat insulating material for producing a heat insulating material by controlling the concentration of the mixed solution and vacuum molding and drying and baking it.

이 단열재를 산업용 보일러에 적용하여 본 결과 열충격 및 수축이 전혀 없고 균열이 발생하지 않으며 1100℃ 내외의 온도에서 연관의 용접부를 감싸주므로써 화염이 용접부에 직접 접촉되지 않고 지속적인 가열에 의해 서서히 가열된 성형체의 전도열이 전달되어 용접부에 균열 발생이 전혀 일어나지 않게 됨을 알았다.As a result of applying this insulation material to an industrial boiler, the result shows that there is no thermal shock, no shrinkage, no cracking, and it wraps the welded joint at a temperature of about 1100 ° C so that the flame is not directly contacted with the weld, and the molded body is gradually heated by continuous heating. It was found that no conduction heat was generated at the weld due to conduction heat of.

Description

다공성 진공성형 단열재 및 그의 제조방법Porous vacuum forming insulation and its manufacturing method

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

Claims (7)

알루미나-실리카-지르코니아계 세라믹섬유 50~80중량부와 무기질 결합제 1~15중량부, 무기질 충진제 3∼30중량부의 조성으로 되어 있고, 기공율 80~90%, 밀도 0.34~0.54g/mℓ이고, 뮬라이트 및 지르코니아 결정성분을 함유하는 다공성 진공성형 단열재.50 to 80 parts by weight of alumina-silica-zirconia-based ceramic fibers, 1 to 15 parts by weight of inorganic binder, 3 to 30 parts by weight of inorganic filler, porosity of 80 to 90%, density of 0.34 to 0.54 g / ml, mullite And a porous vacuum forming insulation containing zirconia crystals. 제1항에 있어서, 알루미나-실리카-지르로니아계 세라믹 섬유가 입경 100μm를 초과하는 비섬유화 입자의 함유량이 1중량% 이하이고, 섬유직경 3μm인 세라믹 섬유인 다공성 진공성형 단열재.The porous vacuum-forming insulating material according to claim 1, wherein the alumina-silica-zirconia-based ceramic fiber is a ceramic fiber having a content of non-fiberized particles having a particle diameter of more than 100 µm of 1 wt% or less and a fiber diameter of 3 µm. 제1항에 있어서, 알루미나-실리카-지르로니아계 세라믹 섬유가 알루미나 44~48중량%, 실리카 36~40중량%, 지르코니아 13~16중량%로 구성된 세라믹 섬유인 다광성 진공성형 단열재.The multi-light vacuum forming heat insulating material of claim 1, wherein the alumina-silica-zirconia-based ceramic fiber is a ceramic fiber composed of 44-48% by weight of alumina, 36-40% by weight of silica, and 13-16% by weight of zirconia. 제1항에 있어서 무기질 결합제가 입자가 구상이고 크기가 10∼20nm인 콜로이달 실리카 또는 입자가 우모상이고 크기가 100~200nm인 콜로이달 알루미나중 어느 하나인 다공성 진공성형 단열재.The porous vacuum forming insulating material according to claim 1, wherein the inorganic binder is any one of spherical particles and colloidal silica having a size of 10 to 20 nm, or colloidal alumina having a particle shape having a size of 100 to 200 nm. 제1항에 있어서, 무기질 충진제가 알루미나 또는 규회석중 어느 하나인 다공성 진공성형 단열재.The porous vacuum forming insulating material according to claim 1, wherein the inorganic filler is either alumina or wollastonite. 세라믹 섬유를 주성분으로 하는 단열재의 제조방벌에 있어서, 알루미나-실리카-지르코니아계 세라믹 섬유 50~80중량부를 물 600∼1000중량부에 해면시키고 여기에 무기질 충진제 1~15중량부와 유기결합제 0~20중량부와 무기질 충진제 3∼30중량부를 혼합하여서 된 슬러리를 형틀에 넣고 진공성형하여 진공성형체를 제조하고 이 성형체를 건조시킨 후 1000~1400℃의 전기로 중에서 2~3시간 열처리하는 다공성 진공성형 단열재의 제조방법.In the production of thermal insulation mainly composed of ceramic fibers, 50 to 80 parts by weight of alumina-silica-zirconia-based ceramic fibers are spun in 600 to 1000 parts by weight of water, and there are 1 to 15 parts by weight of inorganic fillers and 0 to 20 organic binders. Porous vacuum forming heat insulator which mixes 3 parts by weight to 3 parts by weight of inorganic filler into a mold and vacuum molds to prepare a vacuum molded product, and after drying the molded product, heat-processes for 2 to 3 hours in an electric furnace at 1000 to 1400 ° C. Manufacturing method. 제6항에 있어서, 진공압 45~55mmHg에서 진공성형하여 진공성형체를 제조하고, 전자파 가열장치로 5~10분간 건조시키는 보일러용 다공성 진공성형 단열재의 제조방법.The method of manufacturing a porous vacuum forming insulating material for a boiler according to claim 6, wherein the vacuum molded product is manufactured by vacuum molding at a vacuum pressure of 45 to 55 mmHg, and dried for 5 to 10 minutes by an electromagnetic wave heating apparatus. ※ 참고사항:최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR94040693A 1994-12-31 1994-12-31 An insulating material and production thereof KR970008732B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030029419A (en) * 2001-10-08 2003-04-14 주식회사 솔나노켐 Fireproof Reinforced Materials for Building Construction and Preparation Method Thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100894672B1 (en) * 2006-05-22 2009-04-24 최봉환 Ceramic fiber product for protecting a high temperature material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030029419A (en) * 2001-10-08 2003-04-14 주식회사 솔나노켐 Fireproof Reinforced Materials for Building Construction and Preparation Method Thereof

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