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GB1478057A - Method of making an extrusion moulding from inorganic material powder having poor plasticity - Google Patents

Method of making an extrusion moulding from inorganic material powder having poor plasticity

Info

Publication number
GB1478057A
GB1478057A GB3054174A GB3054174A GB1478057A GB 1478057 A GB1478057 A GB 1478057A GB 3054174 A GB3054174 A GB 3054174A GB 3054174 A GB3054174 A GB 3054174A GB 1478057 A GB1478057 A GB 1478057A
Authority
GB
United Kingdom
Prior art keywords
sintered
extrusion
polyurethane
solvent
weight
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.)
Expired
Application number
GB3054174A
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.)
Nippon Tokushu Togyo KK
Niterra Co Ltd
Original Assignee
NGK Spark Plug Co Ltd
Nippon Tokushu Togyo KK
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 NGK Spark Plug Co Ltd, Nippon Tokushu Togyo KK filed Critical NGK Spark Plug Co Ltd
Publication of GB1478057A publication Critical patent/GB1478057A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C04B35/626—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
    • C04B35/632—Organic additives
    • C04B35/634—Polymers
    • C04B35/63448—Polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B35/63456—Polyurethanes; Polyisocyanates
    • 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
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
    • 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
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • 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
    • C04B35/01—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
    • C04B35/10—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 aluminium oxide
    • C04B35/111—Fine ceramics
    • 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
    • C04B35/01—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
    • C04B35/16—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 silicates other than clay
    • C04B35/18—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 silicates other than clay rich in aluminium oxide
    • C04B35/195—Alkaline earth aluminosilicates, e.g. cordierite or anorthite
    • 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
    • C04B35/626—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
    • C04B35/632—Organic additives
    • C04B35/634—Polymers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Catalysts (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

1478057 Sintered extrusion mouldings NIPPON TOKUSHU TOGYO K K 10 July 1974 [14 July 1973] 30541/74 Heading ClJ [Also in Division B5] An article of inorganic material is sintered from an extrusion comprising particles of the material which has been plasticized by a binder comprising water hardening polyurethane dissolved in a water soluble solvent the extrusion being effected into a water bath into which the solvent diffuses and in which the polyurethane is hardened by the water. The solvent comprises dimethylformamide, in a weight ratio of 70% to 30% polyurethane, and preferred weight ratios of the material to the polyurethane and solvent are 100:20 to 100:70 and 100:50 to 100:60. The article may comprises a thin sheet, or a ceramic honeycomb for use on a catalytic converter for automobile exhaust gas. The examples relate to the extrusion of thin sheets from the following materials (1) and (2), Magnesite, Gairome-clay, and columine-powder mixed to obtain a cordierite composition comprising 2 MgO, 2 Al 2 O 3 and 5 S 1 O 2 with different portions of the extrudate being sintered in an electric furnace at a rate of 200‹ C/ hr, respectively to 1,380‹ C, and 1,410‹ C, for two hours; (3) an electric insulating substrate of a high alumina composition comprising, by weight, 94% Al 2 O 3 , 3% S 1 O 2 , and 1À5% CaO, sintered at 200‹ C/hr to 1,620‹ C for 3 hours; (4) a cemented carbide comprising, by weight, 93% WC, and 7% CO, sintered in a hydrogen furnace at 200‹ C/hr to 1,480‹ C for 1 hour.
GB3054174A 1973-07-14 1974-07-10 Method of making an extrusion moulding from inorganic material powder having poor plasticity Expired GB1478057A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP48079603A JPS5029613A (en) 1973-07-14 1973-07-14

Publications (1)

Publication Number Publication Date
GB1478057A true GB1478057A (en) 1977-06-29

Family

ID=13694576

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3054174A Expired GB1478057A (en) 1973-07-14 1974-07-10 Method of making an extrusion moulding from inorganic material powder having poor plasticity

Country Status (4)

Country Link
JP (1) JPS5029613A (en)
FR (1) FR2236625B1 (en)
GB (1) GB1478057A (en)
IT (1) IT1017137B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2262382A (en) * 1991-11-21 1993-06-16 Abb Patent Gmbh Method of producing a ceramic support for high temperature fuel cells

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5211205A (en) * 1976-07-22 1977-01-28 Ngk Spark Plug Co Extrusion of low plasticity inorganic material powder
JP3415188B2 (en) * 1993-03-26 2003-06-09 日本碍子株式会社 Clay for ceramic structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2262382A (en) * 1991-11-21 1993-06-16 Abb Patent Gmbh Method of producing a ceramic support for high temperature fuel cells

Also Published As

Publication number Publication date
DE2433438A1 (en) 1975-02-06
JPS5029613A (en) 1975-03-25
FR2236625A1 (en) 1975-02-07
FR2236625B1 (en) 1976-12-24
IT1017137B (en) 1977-07-20
DE2433438B2 (en) 1976-12-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee